iABS Securing Screws Improperly Tightened – 2022 Timpte Bulk Commodity Hopper Trailers

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Timpte, Inc 1827 Industrial Drive David City, NE 68632 (402) 367-3056 Fax: (402) 367-4340 Nov. 16, 2021 To: Timpte Team Members and Timpte Dealers From: Jeff Thompson – Executive Vice President, Engineering, Timpte Inc. We have been contacted by ZF Wabco, the supplier for the ABS systems that we use on our trailers, that they failed to properly torque portions of the ABS ECU on particular ECUs. As such they have initiated a Safety Recall with NHTSA. You are receiving this letter because trailers that you sold match the serial number of a unit produced with one of the identified ECUs. These trailers will have to have the ABS ECU replaced at the owner’s earliest opportunity. ZF Wabco will pay for the replacement of the ABS ECU. The end user that purchased the trailer(s) will receive a letter directly from Timpte notifying them of the Safety Recall and directing them to bring it to an authorized repair facility at their earliest opportunity to have the ABS ECU replaced. Attached to this letter is a list of the trailers that you sold that are included in this recall. As a service to your customer, we ask that you follow up with them and assist them in getting the identified trailers into a repair facility, preferably your facility, to be repaired as soon as possible. To be able to perform the repair, the repair facility must have the ability to connect to the trailer and run the Wabco iABS diagnostics software. ZF Wabco has either already supplied your facility or will be contacting you to supply your facility, with the software needed. If you have any questions on this topic, please contact us. You can speak to your Regional General Manager, Timpte Warranty Administration, Dwight Wagoner or myself. Thank you. Jeff Thompson Executive Vice President, Timpte Inc.

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Timpte, Inc 1827 Industrial Drive David City, NE 68632 (402) 367-3056 Fax: (402) 367-4340 100 Timpte Parkway PO Box 347 David City, NE 68632 Important Safety Recall Notice Dear Timpte Customer Customer Address City, State, Zip Code This notice is sent to You in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act RE: Safety Recall #21V-883, ZF Wabco ABS System Electronic Control Unit (ECU) Failure Timpte has decided that a defect, which relates motor vehicle safety, exist in certain ZF Wabco ABS System ECU for Your trailer. This notice is to inform You that on November 15, 2021, Timpte notified NHTSA that it would institute a recall for trailers equipped with suspect ABS System ECUs manufactured between May 17, 2021, and November 2, 2021, for those units where the potential issues may occur. The ECU units were assembled with fasteners that may have been improperly tightened. The mis-assembly could cause the vehicle brakes to seize unexpectantly during normal operations, increasing the risk of crash. Please contact Timpte Warranty, upon receipt of this letter, at (402)367-3056. Timpte Warranty Personnel will assist with locating and scheduling Your trailer into the nearest repair facility to address the problem. This repair will be performed at no cost to You, Our Customer. You will be asked to transport Your trailer to the selected repair facility for this recall. Parts correcting the defect will be available at the repair facility. The Repair facility will replace the suspect ECU at a rate of 2 hours to correct the defect. Prior to reporting to the Repair Facility for the repair, please take care to monitor Your tractor-trailer combination performance for any indication of normal operating conditions and vehicle performance. In this event, contact Timpte Warranty immediately. If You have sold the vehicle noted in this Recall Notice, pleased forward the contact information for the new owner to Timpte, Inc. Timpte, Inc 1827 Industrial Drive David City, NE 68632 (402) 367-3056 Fax: (402) 367-4340 Timpte, Inc. 100 Timpte Parkway PO Box 347 David City, NE 68632 (402)367-3056 If You are the Lessor of the trailer VIN listed, please forward a copy of this notice within ten (10) days to comply with federal Regulations. If You have already paid to have Your trailer repaired for this condition, you may be eligible for reimbursement of the charges You paid for the replacement ECU. To learn more about what You need to do to obtain reimbursement, contact Timpte Warranty at (402)367-3056. Timpte will provide the instructions for reimbursement purposes. If, after attempting to have Your vehicle repaired, you believe you have not been able to have Your vehicle remedied without charge and within a reasonable amount of time, you may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC, 20590 or call toll free Vehicle safety Hotline at 1-888-327-4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov. We apologize for any inconvenience this safety recall may cause, but safety is Our first concern. Sincerely, Timpte, Inc.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-883 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Timpte, Inc. Submission Date : NOV 17, 2021 NHTSA Recall No. : 21V-883 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Timpte, Inc. Address : 1827 Industrial Drive David City NE 68632 Company phone : 402-367-3056 Population : Number of potentially involved : 67 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 Timpte Bulk Commodity Hopper Trailers Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : This safety recall is based on information received from ZF Wabco for the iABS ECU assembly issues reported to Timpte officially Wednesday, November 10, 2021 ZF Wabco provided a list of suspect iABS ECU units that were considered suspect based on their process review for ECU assembly 67 trailers have been identified from the ZF Wabco suspect iABS ECU list provided for review. All are Timpte Bulk Commodity Trailers, models 28’6, 33’5, 38′, 40′, 42′, T45′, T48′ and T50′ models. Production Dates : MAY 17, 2021 – NOV 01, 2021 VIN Range 1 : Begin : 1TDH40025NB171735 End : 1TDH3352xnb174711 ✔ Not sequential VIN Range 2 : Begin : 1TDH40025NB171735 End : 1TDH3352xnb174711 Not sequential VIN Range 3 : Begin : 1TDH40025NB171735 End : 1TDH3352xnb174711 ✔ Not sequential Description of Defect : Description of the Defect : The ECU units were not assembled with the correct installation torque for some fasteners in the ECU Bodies FMVSS 1 : 121 – Air brake systems FMVSS 2 : 136 – Electronic Stability Control Systems on Heavy Vehicles Description of the Safety Risk : The ECUs may fail for the ABS function, per the Component manufacturer. Description of the Cause : the ABS system may not function, per the ECU Manufacturer, ZF Wabco Identification of Any Warning that can Occur : Timpte is not aware of any warning that might occur due to this defect. The ECUs may fail to function as designed if failure occurs. Part 573 Safety Recall Report 21V-883 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Involved Components : Component Name 1 : iABS ECU Component Description : ABS System Electronic Control Unit Component Part Number : 400 500 430 0 Component Name 2 : iABS ECU Component Description : ABS System Electronic Control Unit Component Part Number : 400 500 420 0 Supplier Identification : Component Manufacturer Name : ZF Group Address : 1220 Pacific Drive Auburn Hills 48326 Country : NR Chronology : Timpte was informed November 10, 2021 of a Safety Recall for suspect ABS units manufactured by ZF Group (Wabco). The issue identified was that fasteners in the ECU bodies may not have been properly torqued during the assembly process. ZF Group (Wabco) determined that the issues was a potential safety Risk, so the decision to initiate a Safety Recall will be initiated by Timpte, Inc for the 67 units that have been identified as being completed with suspect iABS ECUs as part of the vehicle ABS system. Part 573 Safety Recall Report 21V-883 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : All suspect iABS ECUs will be replaced in the affected trailers with new ECU units, provided by the component manufacturer at no cost the the Customer. Labor for the replacement will consist of 2 man-hours labor, @ $90.00 per man-hour, for each replacement component for each trailer affected ($180.00 total labor). Replacements will occur at qualified Timpte Repair Centers and Timpte Dealers. The Repair Facility must have the programming equipment and software to program each new ECU for each trailer affected. Programming the new ECU will be required as part of the ECU replacement. How Remedy Component Differs from Recalled Component : The remedy component has been manufactured following the proper assembly process at the component manufacturer following a process audit to eliminate the assembly problems. The suspect units will be retuned to ZF Group (Wabco) for disposition following the component updates Identify How/When Recall Condition was Corrected in Production : The assembly problem was discovered as part of a process audit. Recall Schedule : Description of Recall Schedule : A draft letter will be sent to NHTSA for review the week of November 15, 2021 for review and mark-up. Once approved, the certified letters will be placed into NHTSA approved envelopes and sent to each trailer owner. Planned Dealer Notification Date : NOV 22, 2021 – JAN 21, 2022 Planned Owner Notification Date : NOV 22, 2021 – JAN 21, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-883 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Timpte, Inc. Submission Date : NOV 24, 2021 NHTSA Recall No. : 21V-883 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Timpte, Inc. Address : 1827 Industrial Drive David City NE 68632 Company phone : 402-367-3056 Population : Number of potentially involved : 67 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 Timpte Bulk Commodity Hopper Trailers Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : This safety recall is based on information received from ZF Wabco for the iABS ECU assembly issues reported to Timpte officially Wednesday, November 10, 2021 ZF Wabco provided a list of suspect iABS ECU units that were considered suspect based on their process review for ECU assembly 67 trailers have been identified from the ZF Wabco suspect iABS ECU list provided for review. All are Timpte Bulk Commodity Trailers, models 28’6, 33’5, 38′, 40′, 42′, T45′, T48′ and T50′ models. Production Dates : MAY 17, 2021 – NOV 01, 2021 VIN Range 1 : Begin : 1TDH40025NB171735 End : 1TDH3352xnb174711 ✔ Not sequential VIN Range 2 : Begin : 1TDH40025NB171735 End : 1TDH3352xnb174711 Not sequential VIN Range 3 : Begin : 1TDH40025NB171735 End : 1TDH3352xnb174711 ✔ Not sequential Description of Defect : Description of the Defect : The ECU units were not assembled with the correct installation torque for some fasteners in the ECU Bodies FMVSS 1 : 121 – Air brake systems FMVSS 2 : 136 – Electronic Stability Control Systems on Heavy Vehicles Description of the Safety Risk : The ECUs may fail for the ABS function, per the Component manufacturer. There is an increased risk of crash due to the condition of the suspect ECUs. Description of the Cause : the ABS system may not function, per the ECU Manufacturer, ZF Wabco Part 573 Safety Recall Report 21V-883 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Identification of Any Warning that can Occur : Timpte is not aware of any warning that might occur due to this defect. The ECUs may fail to function as designed if failure occurs. Involved Components : Component Name 1 : iABS ECU Component Description : ABS System Electronic Control Unit Component Part Number : 400 500 430 0 Component Name 2 : iABS ECU Component Description : ABS System Electronic Control Unit Component Part Number : 400 500 420 0 Supplier Identification : Component Manufacturer Name : ZF Group Address : 1220 Pacific Drive Auburn Hills 48326 Country : NR Chronology : Timpte was informed November 10, 2021 of a Safety Recall for suspect ABS units manufactured by ZF Group (Wabco). The issue identified was that fasteners in the ECU bodies may not have been properly torqued during the assembly process. ZF Group (Wabco) determined that the issues was a potential safety Risk, so the decision to initiate a Safety Recall will be initiated by Timpte, Inc for the 67 units that have been identified as being completed with suspect iABS ECUs as part of the vehicle ABS system. Part 573 Safety Recall Report 21V-883 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : All suspect iABS ECUs will be replaced in the affected trailers with new ECU units, provided by the component manufacturer at no cost the the Customer. Labor for the replacement will consist of 2 man-hours labor, @ $90.00 per man-hour, for each replacement component for each trailer affected ($180.00 total labor). Replacements will occur at qualified Timpte Repair Centers and Timpte Dealers. The Repair Facility must have the programming equipment and software to program each new ECU for each trailer affected. Programming the new ECU will be required as part of the ECU replacement. How Remedy Component Differs from Recalled Component : The remedy component has been manufactured following the proper assembly process at the component manufacturer following a process audit to eliminate the assembly problems. The suspect units will be retuned to ZF Group (Wabco) for disposition following the component updates Identify How/When Recall Condition was Corrected in Production : The assembly problem was discovered as part of a process audit. Recall Schedule : Description of Recall Schedule : A draft letter will be sent to NHTSA for review the week of November 15, 2021 for review and mark-up. Once approved, the certified letters will be placed into NHTSA approved envelopes and sent to each trailer owner. Planned Dealer Notification Date : NOV 22, 2021 – JAN 21, 2022 Planned Owner Notification Date : NOV 22, 2021 – JAN 21, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 21V-883 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Timpte, Inc. Submission Date : NOV 15, 2021 NHTSA Recall No. : 21V-883 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Timpte, Inc. Address : 1827 Industrial Drive David City NE 68632 Company phone : 402-367-3056 Population : Number of potentially involved : 67 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 Timpte Bulk Commodity Hopper Trailers Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : Power Train : NR Descriptive Information : This safety recall is based on information received from ZF Wabco for the iABS ECU assembly issues reported to Timpte officially Wednesday, November 10, 2021 ZF Wabco provided a list of suspect iABS ECU units that were considered suspect based on their process review for ECU assembly 67 trailers have been identified from the ZF Wabco suspect iABS ECU list provided for review. All are Timpte Bulk Commodity Trailers, models 28’6, 33’5, 38′, 40′, 42′, T45′, T48′ and T50′ models. Production Dates : MAY 17, 2021 – NOV 01, 2021 VIN Range 1 : Begin : 1TDH40025NB171735 End : 1TDH3352xnb174711 ✔ Not sequential VIN Range 2 : Begin : 1TDH40025NB171735 End : 1TDH3352xnb174711 Not sequential VIN Range 3 : Begin : 1TDH40025NB171735 End : 1TDH3352xnb174711 ✔ Not sequential Description of Defect : Description of the Defect : The ECU units were not assembled with the correct installation torque for some fasteners in the ECU Bodies FMVSS 1 : 121 – Air brake systems FMVSS 2 : 136 – Electronic Stability Control Systems on Heavy Vehicles Description of the Safety Risk : The ECUs may fail for the ABS function, per the Component manufacturer. Description of the Cause : the ABS system may not function, per the ECU Manufacturer, ZF Wabco Identification of Any Warning that can Occur : Timpte is not aware of any warning that might occur due to this defect. The ECUs may fail to function as designed if failure occurs. Part 573 Safety Recall Report 21V-883 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Involved Components : Component Name 1 : iABS ECU Component Description : ABS System Electronic Control Unit Component Part Number : 400 500 430 0 Component Name 2 : iABS ECU Component Description : ABS System Electronic Control Unit Component Part Number : 400 500 420 0 Supplier Identification : Component Manufacturer Name : ZF Group Address : 1220 Pacific Drive Auburn Hills 48326 Country : NR Chronology : Timpte was informed November 10, 2021 of a Safety Recall for suspect ABS units manufactured by ZF Group (Wabco). The issue identified was that fasteners in the ECU bodies may not have been properly torqued during the assembly process. ZF Group (Wabco) determined that the issues was a potential safety Risk, so the decision to initiate a Safety Recall will be initiated by Timpte, Inc for the 67 units that have been identified as being completed with suspect iABS ECUs as part of the vehicle ABS system. Part 573 Safety Recall Report 21V-883 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : All suspect iABS ECUs will be replaced in the affected trailers with new ECU units, provided by the component manufacturer at no cost the the Customer. Labor for the replacement will consist of 2 man-hours labor, @ $90.00 per man-hour, for each replacement component for each trailer affected ($180.00 total labor). Replacements will occur at qualified Timpte Repair Centers and Timpte Dealers. The Repair Facility must have the programming equipment and software to program each new ECU for each trailer affected. Programming the new ECU will be required as part of the ECU replacement. How Remedy Component Differs from Recalled Component : The remedy component has been manufactured following the proper assembly process at the component manufacturer following a process audit to eliminate the assembly problems. The suspect units will be retuned to ZF Group (Wabco) for disposition following the component updates Identify How/When Recall Condition was Corrected in Production : The assembly problem was discovered as part of a process audit. Recall Schedule : Description of Recall Schedule : A draft letter will be sent to NHTSA for review the week of November 15, 2021 for review and mark-up. Once approved, the certified letters will be placed into NHTSA approved envelopes and sent to each trailer owner. Planned Dealer Notification Date : NOV 22, 2021 – JAN 21, 2022 Planned Owner Notification Date : NOV 22, 2021 – JAN 21, 2022 * NR – Not Reported

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