Recall 22507 – Battery Cable May Become Damaged and Short – 2018-2023 International LT

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Navistar, Inc. 2701 Navistar Drive Lisle, IL 60532 USA P: 331-332-5684 W: navistar.com Brandon L. Kibe Manager, Product Integrity and Regulatory Compliance May 6, 2022 Mr. Alexander Ansley Chief of Recall Management Division National Highway Traffic Safety Administration 1200 New Jersey Avenue, SE Washington D.C. 20590 Subject: Plan for Reimbursement of Pre-Notification Remedies Dear Mr. Ansley, Pursuant to Part 573.6(c)(8)(i), Navistar’s plan to reimburse owners for costs incurred for remedies made in advance of our notification of safety-related defects or noncompliance with Federal motor vehicle safety standards (“FMVSS”) is as follows. (1) PERIOD OF REIMBURSEMENT [Part 573.13(c)]  Beginning Date: o For a noncompliance with FMVSS, the beginning date will be the date of the first test or observation by either NHTSA or Navistar that a noncompliance may exist. o For a safety related defect determined by an Engineering Analysis (“EA”), the beginning date will be the date the EA was opened or one year before Navistar’s notification to NHTSA, whichever is earlier. o For a safety related defect without an EA, the beginning date will be one year prior to Navistar’s notification to NHTSA.  Ending Date: o The ending date will be 10 days after the last customer original notification was mailed. (2) REIMBURSEMENT OF COSTS [Part 573.13(d)]  Reimbursement Approval. Reimbursement will be approved for parts, labor, and certain miscellaneous charges if the following guidelines are met. o The build date of the vehicle must fall within the build date range of the recall population. o The repair date is within the period of reimbursement stated in the customer letter. o An original invoice and proof of customer payment was provided. Reimbursement Plan – Navistar 2 October 3, 2018 o The repairs detailed on the invoice address the defect or noncompliance and are similar to the recall remedy.  Reimbursement Denial. Reimbursement will be denied only under the following conditions. o The costs incurred were within the normal or extended warranty period. o The repair was not the same or similar to the recall remedy. o The repair did not address the defect or noncompliance that led to the recall. o The repair was not reasonably necessary to correct the defect or noncompliance. (3) AMOUNT OF REIMBURSEMENT COSTS [PART 573.13(e)]  The amount of reimbursement will be based on the amount paid by the customer for the remedy and/or the cost of parts for remedy, plus applicable labor. Costs for parts will be limited to our retail price for authorized parts. Any taxes or costs for disposal of wastes will be included in the reimbursement. (4) ADDRESS FOR REIMBURSEMENT CLAIMS [573.13(f)]  Reimbursement claims may be submitted directly to any Navistar brand dealer, as applicable; or mailed to Navistar Claim Reimbursement Department Attention Warranty 2701 Navistar Drive Lisle, IL 60532 (5) ACTION ON REIMBURSEMENT CLAIMS [573.13(g)]  Navistar will act on all claims as follows. o The customer will be reimbursed on approved claims within 60 days of receipt of the claim. o If a claim is denied, a notice will be sent to the customer within 60 days stating in a clear, concise manner the reason for the denial o If a claim is incomplete when submitted, the customer will be advised within 60 days of receipt of the claim of the documentation needed and offered and opportunity to resubmit the claim with complete documentation. (6) METHOD OF REIMBURSEMENT [573.13(h)]  Reimbursement shall be by check from either Navistar or its dealers. Reimbursement Plan – Navistar 3 October 3, 2018 (7) REIMBURSEMENT NOTIFICATION [577.11]  If any vehicles in the recall fall outside the Navistar warranty period, the following paragraph regarding reimbursement of repairs will be included in the customer notification letter. o REIMBURSEMENT ELIGIBILITY If you have already paid for repairs prior to this notice that corrected the defect, you may be eligible for reimbursement of certain repair expenses if they occurred M/DY/YR thru M/DY/YR. Present your original repair paperwork and proof of payment to any [Navistar Brand] dealer and your eligibility will be reviewed. You may also submit a claim using the enclosed Request for Reimbursement card. o Example of a typical Navistar Request For Reimbursement card. The undersigned should be contacted for any additional information regarding this reimbursement plan on (331) 332-5684. Sincerely, Brandon Kibe Manager, Product Integrity and Regulatory Compliance Navistar, Inc. BK: FI

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SERVICE PROCEDURE SUBJECT: SAFETY RECALL 22507 MAY, 2022 Power Inverter Cables on certain International® LT® Series trucks built 10 February 2017 thru 25 February 2022 with a power inverter installed by Navistar’s Truck Specialty Center CUSTOMER LETTER Print ready (PDF file) copy of the Customer Letter DEFECT DESCRIPTION The positive battery cable to the inverter may chafe on the side skirts and over time, could result in an electrical short to ground and / or fire. An electrical short to ground may result in a fire which can cause personal injury and / or death, or damage to property. MODELS INVOLVED This safety recall involves certain International® LT® Series trucks built 10 February 2017 thru 25 February 2022 with a power inverter installed by Navistar’s Truck Specialty Center. ELIGIBILITY This procedure applies ONLY to vehicles marked in the International® Service Portal8M with safety recall 22507. Also complete any other open campaigns listed on the Service Portal at this time. TOOLS REQUIRED Part Number Part Description N/A RiQht AnQle Drill N/A Automatic Center Punch N/A 1 /8-inch Drill Bit N/A 3/8-inch Drill Bit VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 1 PARTS INFORMATION Part Number Part Description Quantity 8900296R91 Inverter Cable Kit# 1 1 8900297R91 Inverter Cable Kit# 2 1 ; If Necessary 8900298R91 Inverter Cable Kit# 3 1 ; If Necessary Source Locally Wire Loom Tape If Necessary 3626607C1 Strap Lock, 250-lb, 20-inch If Necessary 4077219C1 Cable Saddle Spacer If Necessary 8900296R91 contains the following parts: Part Number Part Description Quantity 30381 R1 Nut, M6 3 31045R1 Bolt, Hex Head, Flanged, M6 x 19 1 3534873C2 Nut, Flanged, M8 4 3553742C1 Guide, Brake Hose & Cable, 2-Way Saddle 1 3564070C1 Bolt, Flanged, M8 x 30- 10.9 4 3626607C1 Strap Lock, 250-lb, 20-inch 11 3813157C3 Support Double Saddle 2 3820568C1 Bolt, M6 x 12 3 3544378C1 Nut, M6 1 4038490C2 Clip, Extension 1 4039319C1 Saddle, Double 1 4061975C1 Clip, Extension 1 465283C1 Clip, Extension 1 4160173C1 Stud, Terminal, Battery MTD Dual 1 3667670C1 Cube Fuse 1 N00091 Cube Fuse Nut 1 476074C1 Nut, Battery Terminal 3/8-inch UNC 1 8900297R91 contains the following parts: Part Number Part Description Quantity R1H12R1250 Positive Cable 1 3626607C1 Strap Lock, 250-lb, 20-inch 5 3535872C1 Strap Cable Lock, Dual Clamp 10 8900298R91 contains the following parts: Part Number Part Description Quantity K1H2211210 Negative Cable 1 3626607C1 Strap Lock, 250-lb, 20-inch 5 3535872C1 Strap Cable Lock, Dual Clamp 10 VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 2 SERVICE PROCEDURE WARNING! To prevent personal mJury and / or death, or damage to property, park vehicle on hard flat surface, turn the engine off, set the parking brake and install wheel chocks to prevent the vehicle from moving in either direction. WARNING! To prevent personal injury and / or death, or damage to property, if the vehicle must be raised, do not work under the vehicle supported only by jacks. Jacks can slip or fall over. WARNING! To prevent personal injury and/ or death, always wear safe eye protection when performing vehicle maintenance. WARNING! To prevent personal injury and / or death, or damage to property, allow engine/ vehicle components to cool before servicing. WARNING! To prevent personal injury and / or death, or damage to property, keep flames or sparks away from vehicle and do not smoke while servicing the vehicle’s batteries. Batteries expel explosive gases. WARNING! To prevent personal injury and / or death, or damage to property, remove the ground cable from the negative terminal of the battery box before disconnecting any electrical components. Always connect the ground cable last. 1. Park vehicle on flat surface. 2. Shift transmission to Park or Neutral and set parking brake. 3. Install wheel chocks. 4. Unlatch and open hood. 5. Remove front and rear driver-side cab skirts. Refer to technician manual for detailed instructions. 6. Disconnect and isolate negative battery cable on main vehicle battery. Discard battery terminal nut. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 3 1 2 3 \SHER 0000474135 Figure 1. Inverter Harness Interference 1. Inverter harness 2. Battery box edge 3. Diesel Exhaust Fluid (DEF) tank NOTE: Not all vehicles will have cables ties strapped to all brackets shown. 7. If required, using side cutters, remove and discard cable ties securing inverter harnesses at the DEF tank bracket and battery box. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 4 0000474136 Figure 2. Inverter Cable Crossmember Inspection 1. Inverter cable NOTE: Harness depicted in Figure 2 shown unattached for clarity. NOTE: Inspect entire length of inverter harness for signs of chafing or rubbing. 8. Inspect inverter harness (Figure 1, Item 1) for any signs of chafing or rubbing. Thoroughly inspect convolute and insulation at battery box, DEF tank edges (Figure 1, Items 2 & 3), cab/ sleeper crossmembers (Figure 2, Item 1) above DEF and fuel tank, and in other areas where interference with cab skirts may occur: a. If no signs of chafing are present, proceed to Step 26. b. If signs of chafing are present on convolute only, wrap affected areas with wire loom tape and proceed to Step 26. c. If signs of chafing are present on cable insulation, proceed to Step 9. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 5 1 0000474137 Figure 3. Inverter Ground Strap 1. Ground strap NOTE: Steps 9 thru 25 are only required if an inverter cable needs to be replaced. 9. Using side cutters, remove and discard cable ties securing inverter ground strap (Figure 3, Item 1 ). 10. Disconnect positive and negative inverter harnesses at vehicle batteries. 11. Using side cutters, remove and discard cable ties securing inverter harnesses at existing air lines / vehicle harnesses. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 6 1 Figure 4. Inverter Ground Bolt 1. Bolt 0000474138 CAUTION! To prevent damage to property or vehicle components, RED sealant paint must be thoroughly softened and fully removed from bolt and threads prior to removing inverter ground bolt at frame. Avoid drip onto unwanted surfaces. DO NOT apply to rubber, wire insulation and the like, only metallic surfaces. 12. Remove inverter ground bolt (Figure 4, Item 1) at frame. Save bolt for reuse: a. Shake softener gel container to thoroughly mix contents. Slowly open container. b. Pour needed amount of softener into small metal container. Using paint brush, apply liberally to RED coated threads, nut, and bolt (metal surfaces). c. Let softener sit for 10-15 minutes. Longer set time will yield better results. d. Using scraper, wire brush, and rag, remove as much coating as possible. Second application of softener chemical may be required; use discretion prior to loosening nut and bolt. e. Using abrasive pad or cloth dipped in odorless mineral spirits, remove remaining finish or residues from metal surfaces. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 7 1 2 0000474139 Figure 5. Inverter 1. Remote cable 2. Inverter assembly 13. Working from vehicle interior, reposition lower bunk mattress. 14. Lift and secure lower bunk to access inverter assembly (Figure 5, Item 2). 15. Unplug remote cable (Figure 5, Item 1) and any accessories from inverter. 16. Remove four fasteners securing inverter and reposition. Save fasteners for reuse. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 8 2 0000474139 Figure 6. Inverter Harness Floor Plate 1. Harness floor plate 2. Fastener (5 total, 1 not shown) 17. Remove five fasteners (Figure 6, Item 2) securing harness floor plate (Figure 6, Item 1 ). Save fasteners for reuse. 18. Remove inverter assembly and harness from vehicle interior. 19. Place inverter assembly on bench. 20. Replace affected cables as necessary. Save fasteners for reuse: a. Using paint pen or equivalent, mark and record locations of dual clamp ties located on non-affected harness convolute. b. Remove bolt, nut, and lock washer securing affected cable at inverter. c. Remove dual clamp ties separating positive and negative cables from entire length of harness. d. Remove convolute from affected cable between floor plate and inverter connection and discard. e. Remove plastic nut securing affected cable to plastic grommet in floor plate. f. Slide cable out of plastic grommet and discard affected cable. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 9 g. Position replacement cable relative to existing inverter cable. h. Measure, cut, and remove replacement convolute between floor plate and inverter end of cable. Save convolute for resuse. i. Slide replacement cable through plastic grommet in metal floor plate. j. Reinstall plastic nut and tighten securely. k. Reinstall convolute on cable between floor plate and inverter connection. I. Using torque wrench and previously removed fasteners, reinstall affected cable on inverter terminal. Tighten fastener securely. m. If necessary, repeat Steps 18a – 181 for remaining cable. n. Install new convolute on replacement cable between floor plate and battery end of cable. o. Install dual clamp tie between positive and negative cable halfway between inverter and metal floor plate. p. Referring to previously marked locations, install dual clamp ties between positive and negative cables in original locations. 21. Working from vehicle interior, install inverter assembly: a. Feed harness through floor plate in cab floor. b. Using previously removed fasteners, secure floor plate to cab floor. Tighten fasteners securely. c. Using previously removed fasteners, position and install inverter assembly onto mounting fasteners. Tighten fasteners securely. d. Connect remote cable (Figure 5, Item 1) and any previously disconnected accessories to inverter. e. Lower bunk and position bunk mattress. NOTE: Ensure bolt threads are thoroughly clean prior to applying RED sealant paint. 22. Thoroughly clean inverter assembly ground strap bolt and connection point on frame. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 10 23. Using torque wrench, install bolt securing inverter assembly ground strap to frame (Figure 3, Item 1 ). Tighten bolt to 31 lb-ft (42 N•m). 24. Apply RED sealant paint and thoroughly coat frame bolt, bolt threads, nut, inverter assembly ground strap terminal ring, and frame. NOTE: DO NOT CONNECT inverter harnesses to batteries. 25. Route positive and negative inverter harnesses to vehicle batteries. 0000474142 Figure 7. Swivel Saddle Bracket Assemblies 1. Bracket above DEF tank 2. Bracket above fuel tank NOTE: Steps 26-60 are required for all vehicles. NOTE: Brackets depicted in Figure 8 are located on driver-side sleeper cab crossmembers above DEF tank and fuel tank. 26. Using sidecutters, remove and discard cable ties securing air lines and vehicle harnesses at saddle lock brackets (Figure 7, Items 1 & 2) located on sleeper floor crossmember. 27. Remove and discard swivel saddle bracket assemblies and speed nut/ retaining clip. Using a paint pen or equivalent, mark and record existing hole locations on crossmember for installation of clip extension supplied with kit. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 11 1 3 0000474143 Figure 8. Assembly – 4061975C1 Clip Extension 1. Clip extension 2. 3813157C3 double saddle support 3. Assembly 30381 R1 M6 nut/ 3820568C1 6 x 12 M6 bolt 28. Assemble 4061975C1 Clip Extension: a. Position double saddle support (Figure 8, Item 2) onto clip extension (Figure 8, Item 1) with upper horizontal edge of clip extension facing outward. b. Place M6 nut into opening of double saddle support. c. Install M6 bolt through rear of saddle support into M6 nut. Securely tighten bolt and nut assembly (Figure 8, Item 3). VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 12 0000474144 Figure 9. Assembly – 4038490C2 Clip Extension 1. Clip extension 2. 3813157C3 double saddle support 3. Assembly 30381 R1 M6 nut/ 3820568C1 6 x 12 M6 bolt 29. Assemble 4038490C2 clip extension: a. Position double saddle support (Figure 9, Item 2) onto clip extension (Figure 9, Item 1) with upper edge of saddle support facing up. b. Place M6 nut into opening of double saddle support. c. Install M6 bolt through rear of saddle support into M6 nut. Tighten bolt and nut assembly (Figure 9, Item 3) securely. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 13 1 2 3 0000474151 Figure 10. 4061975C1 Clip Extension 1. 3564070C1 flanged M8 x 30 – 10.9 bolt 2. 3534873C2 flanged M8 nut 3. Clip extension assembly NOTE: Air lines, 7-way cord, and inverter cables will be installed in later steps of this procedure. 30. Using previously recorded crossmember location above fuel tank, position assembled clip extension (Figure 10, Item 3) over hole and loosely install M8 bolt and nut (Figure 10, Items 1 & 2). 31. Using torque wrench, tighten bolt and nut assembly to 23 lb-ft (31 N•m). VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 14 2 5 4 3 0000474152 Figure 11. 4038490C2 Clip Extension 1. Clip extension assembly 2. 3534B73C2 flanged MB nut (2) 3. 3564070C1 flanged MB x 30 – 10.9 bolt (2) 4. 3553742C1 guide, brake hose & cable, 2-way saddle 5. 4039319C1 M6 nut/ 3B2056BC1 M6 x 12 assembly bolt 32. Using previously recorded crossmember location above DEF tank, position assembled clip extension (Figure 11, Item 1) over hole and loosely install one MB bolt and nut (Figure 11, Items 2 & 3) until snug. 33. Mark drill location for clip extension installation: a. Using a scribe and clip extension as a template, mark center location for additional hole. b. Remove clip extension from crossmember. c. Using automatic center punch and previously recorded scribe mark, create a dimple in crossmember. d. Using recorded dimple, right angle drill, and 1/B-inch drill bit, drill pilot hole into sleeper crossmember. e. Using right angle drill, and 3/B-inch drill bit, drill hole into sleeper crossmember using pilot hole as template. f. De burr hole and remove any sharp edges. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 15 NOTE: Air lines, 7-way cord and inverter cables will be installed in later steps of this procedure. 34. Position clip extension over holes in crossmember and install two MB bolts and nuts (Figure 11, Items 2 & 3). Tighten to 23 lb-ft (31 N•m). 35. Position saddle (Figure 11, Item 4) to clip extension facing inward and install M6 nut and bolt (Figure 11, Item 5). Tighten to 12 lb-ft (16 N•m). 1 2 4 3 0000474153 Figure 12. 465283C1 Clip Extension 1. Clip extension assembly 2. 3534873C2 flanged MB nut/ 3564070C1 flanged MB x 30 – 10.9 bolt 3. 4039319C1 saddle, double 4. 30381 R1 M6 nut/ 3820568C1 M6 x 12 assembly bolt NOTE: If clip extension depicted in Figure 12 is present on your vehicle, proceed to Step 38. 36. Locate hole in crossmember rearward of Aftertreatment Power Distribution Module (PDM). 37. Position clip extension (Figure 12, item 1) over hole in crossmember and install MB bolt and nut (Figure 12, Items 2 & 3). Tighten to 23 lb-ft (31 N•m). 38. Position saddle (Figure 12, Item 3) to clip extension facing outward and install M6 nut and bolt (Figure 12, Item 4 ). Tighten to 12 lb-ft ( 16 N•m ). VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 16 2 5 4 3 0000474154 Figure 13. 4061975C1 Extension Clip- Harness Routing 1. Inverter negative harness 2. Extension clip 3. Trailer 7-way cord 4. Inverter positive harness 5. 3626607C1 strap lock, 250-lb, 20-inch (4 total) 39. Working from rear of vehicle at area of 4061975C1 Extension Clip (Figure 13, Item 2) above fuel tank, position inverter negative harness (Figure 13, Item 1) and brake air lines at upper location of support. Secure with two strap locks (Figure 13, Item 5) supplied with kit. 40. Position inverter positive harness, 7-way cord (Figure 13, Items 3 & 4) and inverter ground cable to lower location of support. Secure with two strap locks (Figure 13, Item 5) supplied with kit. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 17 2 4 3 0000474155 Figure 14. 4038490C2 Extension Clip- Harness Routing 1. Extension clip 2. Inverter negative harness 3. Inverter positive harness 4. 3626607C1 strap lock, 250-lb, 20-inch (4 total, 2 not shown) 41. Working at area of 4038490C2 Extension Clip (Figure 14, Item 1) above DEF tank, position air lines, 7-way cord, and inverter ground cable behind clip extension at 2-way saddle. Using cable ties, secure air lines to preinstalled saddle. 42. Position inverter negative harness (Figure 14, Item 2) at inward location of support. Secure with two strap locks (Figure 15, Item 4) supplied with kit. 43. Position inverter positive harness (Figure 14, Item 3) to outward location of support. Secure with two strap locks (Figure 14, Item 4) supplied with kit. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 18 2 3 2 4 0000474156 Figure 15. 465283C1 Extension Clip – Harness Routing 1. Inverter negative harness 2. 3626607C1 strap lock, 250-lb, 20-inch (2 total) 3. Extension clip 4. Inverter positive harness NOTE: Vehicles built before July 2021 will need the extension clip mounted to the crossmember as shown in Figure 15. 44. Working at area of 465283C1 Extension Clip (Figure 15, Item 3), position inverter negative harness (Figure 15, Item 1) at upper location of support. Secure with strap lock (Figure 15, Item 2) supplied with kit. 45. Position inverter positive harness (Figure 15, Item 4) to lower location of support. Secure with strap lock (Figure 15, Item 2) supplied with kit. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 19 1 2 0000474157 Figure 16. 3667670C1 Cube Fuse 1. 4160173C1 stud, terminal, battery MTD dual 2. Cube fuse 46. Remove terminal stud nut and cube fuse at battery. Discard terminal stud, cube fuse, and nut. 47. Clean battery terminal with wire brush. Then clean with electrical contact cleaner and dry with shop air. 48. Install replacement terminal stud (Figure 16, Item 1) at battery. 49. Apply BLUE dielectric grease to threads of new positive battery stud nut. Using torque wrench, tighten battery stud nut to 12 – 15 lb-ft (16 – 20 N•m). 50. Position cube fuse (Figure 16, Item 2) to terminal stud. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 20 3 0000474158 Figure 17. Inverter Harness Routing at Vehicle Battery 1. Inverter positive harness 2. Inverter negative harness 3. Cable saddle spacer 4. Strap lock (2) 51. If cable was replaced, using saddles as location points, route inverter positive harness (Figure 17, Item 1) to existing vehicle battery saddles and secure using strap locks supplied with kit. 52. If cable was replaced, using saddles as location points, route inverter negative harness (Figure 17, Item 2) to existing vehicle battery saddles and secure using strap locks supplied with kit. 53. Inspect inverter harnesses (Figure 17, Items 1 & 2) to ensure there is no direct contact with battery cables, battery studs, battery box edges, or battery hold downs. If there is, reposition or install saddle clamps (Figure 17, Item 3) and cable tie straps (Figure 17, Item 4) to eliminate direct contact. 54. Reconnect positive battery cable to terminal with cube fuse installed. 55. Install N00091 Cube Fuse Nut. Using torque wrench, tighten to 10 – 11 lb-ft (13 – 15 N•m). 56. Clean negative battery terminal with wire brush. Then clean with electrical contact cleaner and dry with shop air. 57. Apply BLUE dielectric grease to battery terminal stud, negative battery cable ring terminal, and threads of new battery stud nut. 58. Reconnect negative battery cable to negative terminal on main vehicle battery and install new battery terminal nut. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 21 59. Using torque wrench, tighten battery stud nut to 12 – 15 lb-ft (16 – 20 N•m). 60. Install front and rear driver-side cab skirts. Refer to technician manual for detailed instructions. 61. Remove wheel chocks. END OF SERVICE PROCEDURE LABOR INFORMATION Operation Number Description A40-22507-1 Inspect and Reroute Harnesses A40-22507-2 Replace One Harness Cable A40-22507-3 Replace Both Harness Cables CAMPAIGN IDENTIFICATION LABEL Each vehicle corrected in accordance with this campaign must be marked with a CTS-1075 Campaign Identification Label. Complete the label and attach on a clean surface next to the vehicle identification number (VIN) plate. ADMINISTRATIVE/ DEALER RESPONSIBILITIES WARRANTY CLAIMS Time 1.3 Hrs. 1.0 Hrs. 1.5 Hrs. COMPLETED Service Location Code 1 Warranty claim expense is to be charged to Warranty. Claims are to be submitted in the normal manner, making reference to Safety Recall 22507. Section 7 of the Warranty Policy and Procedures Manual contains further information related to the submission and processing of AFC / Recall claims. As with all claim submissions, items acquired locally must be submitted in the “Other Charges” tab. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 22 The cost of any bulk items (such as a bag of cable tie straps, roll of wire, barrel of oil, or tube of silicone) should be prorated for the cost of the individual pieces/ amount used during each repair. GROUP GROUP – Enter nu mber NOUN – Leave b lank ~ ~ ._ I – C (CAUSE) – Ente r either 1, 2, 3. (See below) 1. Inspected (No repair required). 2. Inspected and repaired. 3. Defective part from parts stock. arranty Code) Enter 40. ~ I WARRANTY – (W TYPE PART – En PAD-Enter 1)() ter P for type part causing failure. ~ UNITED STATES AND POSSESSIONS I ~ ~ NOUN C WARR. TP PAD I I I I 0000047910 The National Traffic and Motor Vehicle Safety Act, as amended, provides that each vehicle that is subject to a vehicle recall campaign must be adequately repaired within a reasonable time after the owner has tendered it for repair. A failure to adequately repair within 60 days after a tender of a vehicle is prima facie evidence of failure to repair within a reasonable time. If the condition is not adequately repaired within 60 days, the owner may be entitled to replacement with an identical or reasonable equivalent vehicle at no charge, or to a refund of the purchase price less a reasonable allowance for depreciation. Dealers must correct all vehicles subject to this campaign at no charge to the owner, regardless of mileage, age of vehicle, or ownership, from this time forward. Dealers should proceed immediately to make necessary correction to units in inventory. All inventory vehicles subject to this recall campaign must be corrected prior to sale, transfer or delivery. If vehicles have been sold or transferred and you are in receipt of Customer Notification Letters and Authorization for Recall Service cards for those vehicles, the transfer location or customer must be notified immediately from your dealer location. Dealers must make every effort to promptly schedule an appointment with each owner to repair his or her vehicle as soon as possible. However, consistent with the customer notification, dealers are expected to complete the repairs on the mutually agreed upon service date. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 23 Dealers involved in the recall process will be furnished a listing of owner names and addresses to enable them to follow up with owners and have the vehicles corrected. Use of this listing must be limited to this campaign because the list may contain information obtained from state motor vehicle registration records, and the use of such motor vehicle registration data for purposes other than this campaign is a violation of law in several states. CANADA Dealers must correct all vehicles subject to this campaign at no charge to the owner, regardless of mileage, age of vehicle, or ownership, from this time forward. Dealers should proceed immediately to make necessary correction to units in inventory. All inventory vehicles subject to this recall campaign must be corrected prior to sale, transfer or delivery. If vehicles have been sold or transferred and you are in receipt of Customer Notification Letters and Authorization for Recall Service cards for those vehicles, the transfer location or customer must be notified immediately from your dealer location. Dealers must make every effort to promptly schedule an appointment with each owner to repair his or her vehicle as soon as possible. However, consistent with the customer notification, dealers are expected to complete the repairs on the mutually agreed upon service date. Dealers involved in the recall process will be furnished a listing of owner names and addresses to enable them to follow up with owners and have the vehicles corrected. Use of this listing must be limited to this campaign because the list may contain information obtained from state motor vehicle registration records, and the use of such motor vehicle registration data for purposes other than this campaign is a violation of law in several states. EXPORT Export Distributors should proceed immediately to make necessary correction to units in inventory. All inventory vehicles subject to this recall campaign must be corrected prior to sale, transfer or delivery. If vehicles have been sold or transferred and you are in receipt of Customer Notification Letters and Authorization for Recall Service cards for those vehicles, the transfer location or customer must be notified immediately from your distributor location. Export Distributors are to submit warranty claims in the usual manner making reference to this recall number. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 24 Export Distributors are expected to provide full cooperation and follow-up with respect to this important subject matter. If you have any questions or need further assistance, please contact the Regional Service Manager at your regional office. NAVISTAR, INC. VEHICLE RECALL 22507 © 2022 Navistar, Inc. All rights reserved. All marks are trademarks of their respective owners. 25

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Navistar, Inc. 2701 Navistar Drive Lisle, IL 60532 USA navistar.com A NAVISTAR COMPANY IMPORTANT SAFETY RECALL 22507 NHTSA RECALL NO. 22V-164 This notice applies to your vehicle identified on the enclosed card. MAY 2022 Dear INTERNATIONAL® Customer, This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. Navistar has decided that a defect which relates to motor vehicle safety exists in certain 2018 thru 2023 LT® series trucks built 02/10/2017 thru 02/25/2022 with a power inverter installed by Navistar’s Truck Specialty Center. REASON FOR THIS RECALL The positive battery cable to the inverter may chafe on the side skirts and over time could result in an electrical short to ground. RISK TO MOTOR VEHICLE SAFETY An electrical short to ground may result in a fire which can cause property damage, personal injury, or death. DEFECT REMEDY The repair will involve replacing two or three inverter harness brackets and saddles with a newer design and replacing any cable found with damage. Dealers have parts and instructions to repair your vehicle. The repair will be performed free of charge and take approximately 1 hour and 30 minutes to 3 hours and 30 minutes to complete. ACTIONS YOU SHOULD TAKE If you own this vehicle, please schedule an appointment with any INTERNATIONAL® dealer to have your vehicle repaired. You can find your nearest dealer by calling 1- 800-448-7825 or by using the dealer locator at http://www.internationaltrucks.com. If you have already paid for repairs prior to this notice that corrected the defect, you may be eligible for reimbursement of certain repair expenses if they occurred 03/17/2021 thru 05/26/2022. Present your original repair paperwork and proof of payment to any INTERNATIONAL® dealer and your eligibility will be reviewed. You may also submit a claim using the enclosed Request for Reimbursement card. If you are the lessor of this vehicle, please forward a copy of this notice to the lessee within ten days to comply with federal regulations. If you do not own this vehicle, please fill out and return mail the enclosed card so that you will not be contacted again about this recall. IF YOU NEED FURTHER ASSISTANCE If you believe that Navistar has failed to remedy the defect without charge or within a reasonable time, please follow the procedure described in the Owner Assistance Guide section in your Owner’s Manual or call toll free 1-800-448- 7825. You may also submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Ave, SE, Washington, DC 20590; or call the toll free Vehicle Safety Hotline at 1-888-327-4236 (TTY: 1-800- 424-9153); or go to http://www.safercar.gov. Navistar requests your prompt attention and patience regarding the correction of this defect and apologizes for any inconvenience this may cause you. Navistar, Inc.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-164 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Navistar, Inc. Submission Date : MAR 17, 2022 NHTSA Recall No. : 22V-164 Manufacturer Recall No. : 22507 Manufacturer Information : Manufacturer Name : Navistar, Inc. Address : 2701 Navistar Drive Lisle IL 60532 Company phone : 331-332-1590 Population : Number of potentially involved : 2,804 Estimated percentage with defect : 18 % Vehicle Information : Vehicle 1 : 2018-2023 International LT Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : The suspect population is identified by vehicles that Navistar Truck Specialty Center (TSC) upfitted with a 1500W Purkeys inverter system; P/N P8081003SCR. The suspect population is identified by vehicles upfitted with this inverter system installed by Navistar’s TSC and all other similar vehicles are not. There are 2,804 LT series trucks in the suspect population Production Dates : FEB 10, 2017 – FEB 25, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The positive battery cable to the inverter may chafe on the side skirts and over time, can result in an electrical short to ground and/or fire. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : An electrical short to ground may result in a fire which can cause property damage, personal injury, or death. Description of the Cause : The inverter cables were not routed according to Navistar’s routing and clipping standards. Identification of Any Warning that can Occur : Evidence of chafing on the inverter battery cable when the driver side skirt is removed. The chafing condition may not be possible to detect without removing the skirt. Involved Components : Part 573 Safety Recall Report 22V-164 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : N/A – Installation Issue Component Description : N/A – Installation Issue Component Part Number : N/A – Installation Issue Supplier Identification : Component Manufacturer Name : N/A – Installation Issue Address : NR NR Country : NR Chronology : • 02/18/2022 – Navistar Product Integrity Group receives communication of a fire event on VIN MN064724. • 2/23/2022 – Navistar inspects 5 units built with this inverter at a customer location. 2 of these units showed evidence of cable chafing. • 02/24/2022 – Navistar Compliance, Engineering, and TSC initiates investigation to understand impact of the issue to the LT series vehicles. TSC quarantines all vehicles with this inverter system onsite. • 2/25/2022 – Navistar inspects 2 more customer units in different locations. Neither one has evidence of chafing but found these vehicles cables routed differently than those inspected 02/23/2022. • 03/01/2022 – Navistar Product Integrity Group inspects VIN MN064724. The area of origin was below the driver side floor, above the diesel emission fluid (DEF) tank and outboard of the vehicle frame rail. The cause was a positive battery cable to the inverter had shorted to the skirt frame. • 03/01/2022 – Navistar inspected 8 more customer vehicles thought to be in the suspect population and found no chafing, however confirmed these were routed differently than the units inspected on 02/23/2022. • 03/09/2022 – Navistar finalizes the suspect vehicle population. • 03/10/2022 – Navistar declares a Safety Recall. Part 573 Safety Recall Report 22V-164 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : • The remedy will involve replacing two or three inverter cable brackets and saddles with a newer design. Additionally, any cable found with damage will be replaced. • Navistar’s plan for reimbursement of pre-notification remedies, on file with NHTSA and dated 10/03/2018, applies and reimbursement instructions will be included in the customer notification. How Remedy Component Differs from Recalled Component : The remedy brackets and saddles are a new design which more consistently secure and locate the cables compared to the recalled components. Identify How/When Recall Condition was Corrected in Production : 03/11/2022 – TSC installs revised routing and clipping for all quarantined vehicles and for all future upfitting of Purkeys Inverter System. Recall Schedule : Description of Recall Schedule : It is estimated that the Customer and Dealer notification letters will be mailed by 05/16/2022. Planned Dealer Notification Date : MAY 16, 2022 – MAY 16, 2022 Planned Owner Notification Date : MAY 16, 2022 – MAY 16, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-164 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Navistar, Inc. Submission Date : MAY 18, 2022 NHTSA Recall No. : 22V-164 Manufacturer Recall No. : 22507 Manufacturer Information : Manufacturer Name : Navistar, Inc. Address : 2701 Navistar Drive Lisle IL 60532 Company phone : 331-332-1590 Population : Number of potentially involved : 2,804 Estimated percentage with defect : 18 % Vehicle Information : Vehicle 1 : 2018-2023 International LT Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : The suspect population is identified by vehicles that Navistar Truck Specialty Center (TSC) upfitted with a 1500W Purkeys inverter system; P/N P8081003SCR. The suspect population is identified by vehicles upfitted with this inverter system installed by Navistar’s TSC and all other similar vehicles are not. There are 2,804 LT series trucks in the suspect population Production Dates : FEB 10, 2017 – FEB 25, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The positive battery cable to the inverter may chafe on the side skirts and over time, can result in an electrical short to ground and/or fire. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : An electrical short to ground may result in a fire which can cause property damage, personal injury, or death. Description of the Cause : The inverter cables were not routed according to Navistar’s routing and clipping standards. Identification of Any Warning that can Occur : Evidence of chafing on the inverter battery cable when the driver side skirt is removed. The chafing condition may not be possible to detect without removing the skirt. Involved Components : Part 573 Safety Recall Report 22V-164 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Power Inverter Kit Component Description : Cable Kit Component Part Number : P8081003SCR Supplier Identification : Component Manufacturer Name : N/A – Installation Issue Address : NR NR Country : NR Chronology : • 02/18/2022 – Navistar Product Integrity Group receives communication of a fire event on VIN MN064724. • 2/23/2022 – Navistar inspects 5 units built with this inverter at a customer location. 2 of these units showed evidence of cable chafing. • 02/24/2022 – Navistar Compliance, Engineering, and TSC initiates investigation to understand impact of the issue to the LT series vehicles. TSC quarantines all vehicles with this inverter system onsite. • 2/25/2022 – Navistar inspects 2 more customer units in different locations. Neither one has evidence of chafing but found these vehicles cables routed differently than those inspected 02/23/2022. • 03/01/2022 – Navistar Product Integrity Group inspects VIN MN064724. The area of origin was below the driver side floor, above the diesel emission fluid (DEF) tank and outboard of the vehicle frame rail. The cause was a positive battery cable to the inverter had shorted to the skirt frame. • 03/01/2022 – Navistar inspected 8 more customer vehicles thought to be in the suspect population and found no chafing, however confirmed these were routed differently than the units inspected on 02/23/2022. • 03/09/2022 – Navistar finalizes the suspect vehicle population. • 03/10/2022 – Navistar declares a Safety Recall. Part 573 Safety Recall Report 22V-164 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : • The remedy will involve replacing two or three inverter cable brackets and saddles with a newer design. Additionally, any cable found with damage will be replaced. • Navistar’s plan for reimbursement of pre-notification remedies, on file with NHTSA and dated 10/03/2018, applies and reimbursement instructions will be included in the customer notification. How Remedy Component Differs from Recalled Component : The remedy brackets and saddles are a new design which more consistently secure and locate the cables compared to the recalled components. Identify How/When Recall Condition was Corrected in Production : 03/11/2022 – TSC installs revised routing and clipping for all quarantined vehicles and for all future upfitting of Purkeys Inverter System. Recall Schedule : Description of Recall Schedule : It is estimated that the Customer and Dealer notification letters will be mailed by 05/16/2022. Planned Dealer Notification Date : MAY 16, 2022 – MAY 16, 2022 Planned Owner Notification Date : MAY 16, 2022 – MAY 16, 2022 * NR – Not Reported

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