FL971 Vehicle May Understeer – 2020-2024 Freightliner Cascadia, Freightliner M2 Business Class, 2022 Western Star 4700, & 2020 Freightliner Classic Cascadia

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DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM Defect / Noncompliance Information Report (Section 573.6) FL971 Date of Submission: 4/23/2023 Manufacturer: Daimler Truck North America LLC P.O. BOX 3849 Portland, Oregon 97208 Type of Report: ⃝ Safety Defect X Non-Compliance Vehicle Information Make Model Model Yr. Start Model Yr. End Prod. Begin Date Prod. End Date Amount Freightliner Cascadia 2020 2024 08/30/2019 02/06/2023 2,608 Freightliner Classic Cascadia 2020 2020 11/23/2019 11/28/2019 5 Freightliner M2 Business Class 2020 2024 09/03/2019 02/15/2023 834 Western Star 4700 2022 2022 05/25/2021 08/09/2021 5 Descriptive Information: For certain short wheelbase vehicle configurations that were sold with otherwise-compliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Basis for Determination of the Recall Population: Vehicles built with wheel base 164” or less and certain tire types with low stiffness scores that are believed to be non-conforming. Number potentially involved: 3,452 Estimated percentage of involved with defect: 100% DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM Defect / Noncompliance Description For this Defect/Noncompliance: Describe the defect or noncompliance: Certain 2020 through 2024 MY Freightliner Cascadia, Classic Cascadia, M2 Business Class and Western Start 4700 vehicles may fail to conform to the Federal Motor Vehicle Safety Standard No. 136, Electronic Stability Control Systems for Heavy Vehicles. Describe the safety risk: On the affected short wheelbase vehicle configurations with a 164” or smaller wheelbase that were sold with otherwise-compliant Electronic Stability Control (ESC) systems. The tires on the vehicle at the time of vehicle sale may have been flexible enough that, even with the compliant ESC systems, the vehicles could fail the J-turn portion of the FMVSS 136 testing. This may result in an interference with proper ESC performance, which can increase the risk of a crash. Identify any warning which can precede or occur: N/A If applicable, identify the manufacture of the defective or noncompliant component.: Daimler Truck North America Involved Components Component Name: Radial Rear Tires Component Description: COOPER RM852 EM 295/75R22.5 14 PLY RADIAL REAR TIRES; GOODYEAR G622 RSD 11R22.5 14 PLY RADIAL REAR TIRES; GOODYEAR ENDURANCE LHD 11R22.5 14 PLY RADIAL REAR TIRES; HANKOOK DL11 11R22.5 16 PLY RADIAL REAR TIRES; BRIDGESTONE M770 11R22.5 14 PLY RADIAL REAR TIRES; CONTINENTAL HDL2DL ECO PLUS 275/80R22.5 14 PLY RADIAL REAR TIRES; BRIDGESTONE M770 295/75R22.5 14 PLY RADIAL REAR TIRES; BRIDGESTONE M770 11R22.5 16 PLY RADIAL REAR TIRES; HANKOOK DH06 295/75R22.5 14 PLY RADIAL REAR TIRES. Component Part Number: N/A Component’s country of origin: Business address: Business Contact Information: First / Last Name: Position: Email: Phone: DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM Chronology of Defect / Noncompliance Determination Provide the chronology of events leading up to the defect decision or test data for the noncompliance decision: In December 2022, DTNA Engineering observed inconsistencies in the tire specifications that were allowed on short wheelbase tractors subject to FMVSS 136 regulations and immediately began an inquiry. In February 2023, DTNA determined that some vehicles may not be conforming to internal, conservative specifications to ensure compliance with FMVSS 136 j-turn test provisions. At or around that time, specific suspect problem wheel/tire combinations where blocked and a compliance investigation was started, during which simulation-testing was initiated. Through March and April 2023, specific tire manufacturers were contacted for contributing data for use in the simulation-testing, to try to determine if in fact the tire and wheelbase combinations would be incapable of negotiating the j-turn test within the space constraints. Tire data was received on April 21, 2023, preliminarily indicating that some tires would possibly have difficulty passing the j-turn test, so DTNA decided to implement a non-compliance recall for specific non-conforming wheel tire combinations. DTNA continues to investigate further, particularly to complete simulation-testing, to determine whether certain tire and wheelbase combinations do in fact pass, and therefore DTNA reserves the right to revise the population down in the near future. Identify the Remedy Describe the defect/noncompliance remedy program, including the manufacture’s plan for reimbursement. DTNA is preparing remedy and is currently under development. Repairs will be performed free of charge by Daimler Truck North America authorized service facilities. Details of the reimbursement plan will be included in the owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM Identify the Recall Schedule Describe the recall schedule for notifications.: Customer notification will be made by first class mail using Daimler Trucks North America records to determine the customers affected. Planned Dealer Notification Begin Date: 6/24/2023 Planned Dealer Notification End Date: 6/24/2023 Planned Owner Notification Begin Date: 6/24/2023 Planned Owner Notification End Date: 6/24/2023 Does DTNA plan to file inconsequentiality petition? ⃝ Yes X No Manufacturer’s identification code for this recall (if applicable): FL971 DTNA Representative; Sam Geser Sam Geser Manager, Compliance and Regulatory Affairs

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-299 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Submission Date : Daimler Trucks North America, LLC MAY 02, 2023 NHTSA Recall No. : 23V-299 Manufacturer Recall No. : FL971 Manufacturer Information : Manufacturer Name : Daimler Trucks North America, LLC Address : 4747 N. Channel Avenue Portland OR 97217-3849 Company phone : 800-745-8000 Population : Number of potentially involved : 3,452 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2024 Freightliner Cascadia Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwise- compliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : AUG 30, 2019 – FEB 06, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2020-2020 Freightliner Classic Cascadia Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwise- compliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : NOV 23, 2019 – NOV 28, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-299 Page 2 Vehicle 3 : 2020-2024 Freightliner M2 Business Class Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : HATCHBACK Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwise- compliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : SEP 03, 2019 – FEB 15, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2022-2022 Western Star 4700 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwise- compliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : MAY 25, 2021 – AUG 09, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Noncompliance : Description of the Noncompliance : Certain 2020 through 2024 MY Freightliner Cascadia, Classic Cascadia, M2 Business Class and Western Start 4700 vehicles may fail to conform to the Federal Motor Vehicle Safety Standard No. 136, Electronic Stability Control Systems for Heavy Vehicles. FMVSS 1 : 136 – Electronic Stability Control Systems on Heavy Vehicles FMVSS 2 : NR Description of the Safety Risk : On the affected short wheelbase vehicle configurations with a 164” or smaller wheelbase that were sold with otherwise-compliant Electronic Stability Control (ESC) systems. The tires on the vehicle at the time of vehicle sale may have been flexible enough that, even with the compliant ESC systems, the vehicles could fail the J-turn portion of the FMVSS 136 testing. This may result in an interference with proper ESC performance, which can increase the risk of a crash. Description of the Cause : NR Identification of Any Warning that can Occur : N/A The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-299 Page 3 Involved Components : Component Name 1 : Radial Rear Tire Component Description : COOPER RM852 EM 295/75R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 2 : Radial Rear Tire Component Description : GOODYEAR G622 RSD 11R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 3 : Radial Rear Tire Component Description : GOODYEAR ENDURANCE LHD 11R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 4 : Radial Rear Tire Component Description : HANKOOK DL11 11R22.5 16 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 5 : Radial Rear Tire Component Description : BRIDGESTONE M770 11R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 6 : Radial Rear Tire Component Description : CONTINENTAL HDL2DL ECO PLUS 275/80R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 7 : Radial Rear Tire Component Description : BRIDGESTONE M770 295/75R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-299 Page 4 Component Name 8 : Radial Rear Tire Component Description : BRIDGESTONE M770 11R22.5 16 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 9 : Radial Rear Tire Component Description : HANKOOK DH06 295/75R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Supplier Identification : Component Manufacturer Name : Daimler Truck North America Address : NR NR Country : United States Chronology : In December 2022, DTNA Engineering observed inconsistencies in the tire specifications that were allowed on short wheelbase tractors subject to FMVSS 136 regulations and immediately began an inquiry. In February 2023, DTNA determined that some vehicles may not be conforming to internal, conservative specifications to ensure compliance with FMVSS 136 j-turn test provisions. At or around that time, specific suspect problem wheel/tire combinations where blocked and a compliance investigation was started, during which simulation- testing was initiated. Through March and April 2023, specific tire manufacturers were contacted for contributing data for use in the simulation-testing, to try to determine if in fact the tire and wheelbase combinations would be incapable of negotiating the j-turn test within the space constraints. Tire data was received on April 21, 2023, preliminarily indicating that some tires would possibly have difficulty passing the j- turn test, so DTNA decided to implement a non-compliance recall for specific non-conforming wheel tire combinations. DTNA continues to investigate further, particularly to complete simulation-testing, to determine whether certain tire and wheelbase combinations do in fact pass, and therefore DTNA reserves the right to revise the population down in the near future. The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-299 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : DTNA is preparing remedy and is currently under development. Repairs will be performed free of charge by Daimler Truck North America authorized service facilities. Details of the reimbursement plan will be included in the owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. How Remedy Component Differs NR from Recalled Component : Identify How/When Recall Condition NR was Corrected in Production : Recall Schedule : Description of Recall Schedule : Customer notification will be made by first class mail using Daimler Trucks North America records to determine the customers affected. Planned Dealer Notification Date : JUN 24, 2023 – JUN 24, 2023 Planned Owner Notification Date : JUN 24, 2023 – JUN 24, 2023 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-299 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Submission Date : Daimler Trucks North America, LLC APR 26, 2023 NHTSA Recall No. : 23V-299 Manufacturer Recall No. : FL971 Manufacturer Information : Manufacturer Name : Daimler Trucks North America, LLC Address : 4747 N. Channel Avenue Portland OR 97217-3849 Company phone : 800-745-8000 Population : Number of potentially involved : 3,452 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2024 Freightliner Cascadia Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwise- compliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : AUG 30, 2019 – FEB 06, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2020-2020 Freightliner Classic Cascadia Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwise- compliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : NOV 23, 2019 – NOV 28, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-299 Page 2 Vehicle 3 : 2020-2024 Freightliner M2 Business Class Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : HATCHBACK Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwise- compliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : SEP 03, 2019 – FEB 15, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2020-2024 Western Star 4700 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwise- compliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : MAY 25, 2021 – AUG 09, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Description of Noncompliance : Description of the Noncompliance : Certain 2020 through 2024 MY Freightliner Cascadia, Classic Cascadia, M2 Business Class and Western Start 4700 vehicles may fail to conform to the Federal Motor Vehicle Safety Standard No. 136, Electronic Stability Control Systems for Heavy Vehicles. FMVSS 1 : 136 – Electronic Stability Control Systems on Heavy Vehicles FMVSS 2 : NR Description of the Safety Risk : On the affected short wheelbase vehicle configurations with a 164” or smaller wheelbase that were sold with otherwise-compliant Electronic Stability Control (ESC) systems. The tires on the vehicle at the time of vehicle sale may have been flexible enough that, even with the compliant ESC systems, the vehicles could fail the J-turn portion of the FMVSS 136 testing. This may result in an interference with proper ESC performance, which can increase the risk of a crash. Description of the Cause : NR Identification of Any Warning that can Occur : N/A The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-299 Page 3 Involved Components : Component Name 1 : Radial Rear Tire Component Description : COOPER RM852 EM 295/75R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 2 : Radial Rear Tire Component Description : GOODYEAR G622 RSD 11R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 3 : Radial Rear Tire Component Description : GOODYEAR ENDURANCE LHD 11R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 4 : Radial Rear Tire Component Description : HANKOOK DL11 11R22.5 16 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 5 : Radial Rear Tire Component Description : BRIDGESTONE M770 11R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 6 : Radial Rear Tire Component Description : CONTINENTAL HDL2DL ECO PLUS 275/80R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 7 : Radial Rear Tire Component Description : BRIDGESTONE M770 295/75R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-299 Page 4 Component Name 8 : Radial Rear Tire Component Description : BRIDGESTONE M770 11R22.5 16 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 9 : Radial Rear Tire Component Description : HANKOOK DH06 295/75R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Supplier Identification : Component Manufacturer Name : Daimler Truck North America Address : NR NR Country : United States Chronology : In December 2022, DTNA Engineering observed inconsistencies in the tire specifications that were allowed on short wheelbase tractors subject to FMVSS 136 regulations and immediately began an inquiry. In February 2023, DTNA determined that some vehicles may not be conforming to internal, conservative specifications to ensure compliance with FMVSS 136 j-turn test provisions. At or around that time, specific suspect problem wheel/tire combinations where blocked and a compliance investigation was started, during which simulation- testing was initiated. Through March and April 2023, specific tire manufacturers were contacted for contributing data for use in the simulation-testing, to try to determine if in fact the tire and wheelbase combinations would be incapable of negotiating the j-turn test within the space constraints. Tire data was received on April 21, 2023, preliminarily indicating that some tires would possibly have difficulty passing the j- turn test, so DTNA decided to implement a non-compliance recall for specific non-conforming wheel tire combinations. DTNA continues to investigate further, particularly to complete simulation-testing, to determine whether certain tire and wheelbase combinations do in fact pass, and therefore DTNA reserves the right to revise the population down in the near future. The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-299 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : DTNA is preparing remedy and is currently under development. Repairs will be performed free of charge by Daimler Truck North America authorized service facilities. Details of the reimbursement plan will be included in the owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. How Remedy Component Differs NR from Recalled Component : Identify How/When Recall Condition NR was Corrected in Production : Recall Schedule : Description of Recall Schedule : Customer notification will be made by first class mail using Daimler Trucks North America records to determine the customers affected. Planned Dealer Notification Date : JUN 24, 2023 – JUN 24, 2023 Planned Owner Notification Date : JUN 24, 2023 – JUN 24, 2023 * NR – Not Reported

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DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM Defect / Noncompliance Information Report (Section 573.6) FL971 Date of Submission: 4/23/2023 (Amended May 5, 2023) Manufacturer: Daimler Truck North America LLC P.O. BOX 3849 Portland, Oregon 97208 Type of Report: ⃝ Safety Defect X Non-Compliance Vehicle Information Make Model Model Yr. Start Model Yr. End Prod. Begin Date Prod. End Date Amount Freightliner Cascadia 2020 2024 08/30/2019 02/06/2023 2,608 Freightliner Classic Cascadia 2020 2020 11/23/2019 11/28/2019 5 Freightliner M2 Business Class 2020 2024 09/03/2019 02/15/2023 834 Western Star 4700 2022 2022 05/25/2021 08/09/2021 5 Descriptive Information: For certain short wheelbase vehicle configurations that were sold with otherwise-compliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Basis for Determination of the Recall Population: Vehicles built with wheel base 164” or less and certain tire types with low stiffness scores that are believed to be non-conforming. Number potentially involved: 3,452 Estimated percentage of involved with defect: 100% DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM Defect / Noncompliance Description For this Defect/Noncompliance: Describe the defect or noncompliance: Certain 2020 through 2024 MY Freightliner Cascadia, Classic Cascadia, M2 Business Class and Western Start 4700 vehicles may fail to conform to the Federal Motor Vehicle Safety Standard No. 136, Electronic Stability Control Systems for Heavy Vehicles. Describe the safety risk: On the affected short wheelbase vehicle configurations with a 164” or smaller wheelbase that were sold with otherwise-compliant Electronic Stability Control (ESC) systems. The tires on the vehicle at the time of vehicle sale may have been flexible enough that, even with the compliant ESC systems, the vehicles could fail the J-turn portion of the FMVSS 136 testing. This understeering during a J-turn may result in an interference with proper ESC performance, which can increase the risk of a crash. Identify any warning which can precede or occur: N/A If applicable, identify the manufacture of the defective or noncompliant component.: Daimler Truck North America Involved Components Component Name: Radial Rear Tires Component Description: COOPER RM852 EM 295/75R22.5 14 PLY RADIAL REAR TIRES; GOODYEAR G622 RSD 11R22.5 14 PLY RADIAL REAR TIRES; GOODYEAR ENDURANCE LHD 11R22.5 14 PLY RADIAL REAR TIRES; HANKOOK DL11 11R22.5 16 PLY RADIAL REAR TIRES; BRIDGESTONE M770 11R22.5 14 PLY RADIAL REAR TIRES; CONTINENTAL HDL2DL ECO PLUS 275/80R22.5 14 PLY RADIAL REAR TIRES; BRIDGESTONE M770 295/75R22.5 14 PLY RADIAL REAR TIRES; BRIDGESTONE M770 11R22.5 16 PLY RADIAL REAR TIRES; HANKOOK DH06 295/75R22.5 14 PLY RADIAL REAR TIRES. Component Part Number: N/A Component’s country of origin: Business address: Business Contact Information: First / Last Name: Position: Email: Phone: DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM Chronology of Defect / Noncompliance Determination Provide the chronology of events leading up to the defect decision or test data for the noncompliance decision: In December 2022, DTNA Engineering observed inconsistencies in the tire specifications that were allowed on short wheelbase tractors subject to FMVSS 136 regulations and immediately began an inquiry. In February 2023, DTNA determined that some vehicles may not be conforming to internal, conservative specifications to ensure compliance with FMVSS 136 j-turn test provisions. At or around that time, specific suspect problem wheel/tire combinations where blocked and a compliance investigation was started, during which simulation-testing was initiated. Through March and April 2023, specific tire manufacturers were contacted for contributing data for use in the simulation-testing, to try to determine if in fact the tire and wheelbase combinations would be incapable of negotiating the j-turn test within the space constraints. Tire data was received on April 21, 2023, preliminarily indicating that some tires would possibly have difficulty passing the j-turn test, so DTNA decided to implement a non-compliance recall for specific non-conforming wheel tire combinations. DTNA continues to investigate further, particularly to complete simulation-testing, to determine whether certain tire and wheelbase combinations do in fact pass, and therefore DTNA reserves the right to revise the population down in the near future. On May 5, amended for updating risk statement to include understeering verbiage. Identify the Remedy Describe the defect/noncompliance remedy program, including the manufacture’s plan for reimbursement. DTNA is preparing remedy and is currently under development. Repairs will be performed free of charge by Daimler Truck North America authorized service facilities. Details of the reimbursement plan will be included in the owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM Identify the Recall Schedule Describe the recall schedule for notifications.: Customer notification will be made by first class mail using Daimler Trucks North America records to determine the customers affected. Planned Dealer Notification Begin Date: 6/24/2023 Planned Dealer Notification End Date: 6/24/2023 Planned Owner Notification Begin Date: 6/24/2023 Planned Owner Notification End Date: 6/24/2023 Does DTNA plan to file inconsequentiality petition? ⃝ Yes X No Manufacturer’s identification code for this recall (if applicable): FL971 DTNA Representative; Tiffani Torgeson Manager, Compliance and Regulatory Affairs

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-299 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Daimler Trucks North America, LLC Submission Date : MAY 05, 2023 NHTSA Recall No. : 23V-299 Manufacturer Recall No. : FL971 Manufacturer Information : Manufacturer Name : Daimler Trucks North America, LLC Address : 4747 N. Channel Avenue Portland OR 97217-3849 Company phone : 800-745-8000 Population : Number of potentially involved : 3,452 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2024 Freightliner Cascadia Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwisecompliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : AUG 30, 2019 – FEB 06, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2022-2022 Western Star 4700 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwisecompliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : MAY 25, 2021 – AUG 09, 2021 VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 23V-299 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Vehicle 3 : 2020-2024 Freightliner M2 Business Class Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : HATCHBACK Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwisecompliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : SEP 03, 2019 – FEB 15, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 4 : 2020-2020 Freightliner Classic Cascadia Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : For certain short wheelbase vehicle configurations that were sold with otherwisecompliant Electronic Stability Control (ESC) systems, the tires on the vehicle at the time of sale vehicle may have been flexible enough that, even with the compliant ESC systems, the vehicles may not negotiate the FMVSS 136, Electronic Stability Control System j-turn test maneuver within the space constraints of the regulation. Production Dates : NOV 23, 2019 – NOV 28, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Description of Noncompliance : Description of the Noncompliance : Certain 2020 through 2024 MY Freightliner Cascadia, Classic Cascadia, M2 Business Class and Western Start 4700 vehicles may fail to conform to the Federal Motor Vehicle Safety Standard No. 136, Electronic Stability Control Systems for Heavy Vehicles. FMVSS 1 : 136 – Electronic Stability Control Systems on Heavy Vehicles FMVSS 2 : NR Description of the Safety Risk : On the affected short wheelbase vehicle configurations with a 164” or smaller wheelbase that were sold with otherwise-compliant Electronic Stability Control (ESC) systems. The tires on the vehicle at the time of vehicle sale may have been flexible enough that, even with the compliant ESC systems, the vehicles could fail the J-turn portion of the FMVSS 136 testing. This understeering during a J-turn may result in an interference with proper ESC performance, which can increase the risk of a crash. Description of the Cause : NR Identification of Any Warning that can Occur : N/A Part 573 Safety Recall Report 23V-299 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Involved Components : Component Name 1 : Radial Rear Tire Component Description : COOPER RM852 EM 295/75R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 2 : Radial Rear Tire Component Description : GOODYEAR G622 RSD 11R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 3 : Radial Rear Tire Component Description : GOODYEAR ENDURANCE LHD 11R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 4 : Radial Rear Tire Component Description : HANKOOK DL11 11R22.5 16 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 5 : Radial Rear Tire Component Description : BRIDGESTONE M770 11R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 6 : Radial Rear Tire Component Description : CONTINENTAL HDL2DL ECO PLUS 275/80R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 7 : Radial Rear Tire Component Description : BRIDGESTONE M770 295/75R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Part 573 Safety Recall Report 23V-299 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 8 : Radial Rear Tire Component Description : BRIDGESTONE M770 11R22.5 16 PLY RADIAL REAR TIRES Component Part Number : N/A Component Name 9 : Radial Rear Tire Component Description : HANKOOK DH06 295/75R22.5 14 PLY RADIAL REAR TIRES Component Part Number : N/A Supplier Identification : Component Manufacturer Name : Daimler Truck North America Address : NR NR Country : United States Chronology : In December 2022, DTNA Engineering observed inconsistencies in the tire specifications that were allowed on short wheelbase tractors subject to FMVSS 136 regulations and immediately began an inquiry. In February 2023, DTNA determined that some vehicles may not be conforming to internal, conservative specifications to ensure compliance with FMVSS 136 j-turn test provisions. At or around that time, specific suspect problem wheel/tire combinations where blocked and a compliance investigation was started, during which simulationtesting was initiated. Through March and April 2023, specific tire manufacturers were contacted for contributing data for use in the simulation-testing, to try to determine if in fact the tire and wheelbase combinations would be incapable of negotiating the j-turn test within the space constraints. Tire data was received on April 21, 2023, preliminarily indicating that some tires would possibly have difficulty passing the jturn test, so DTNA decided to implement a non-compliance recall for specific non-conforming wheel tire combinations. DTNA continues to investigate further, particularly to complete simulation-testing, to determine whether certain tire and wheelbase combinations do in fact pass, and therefore DTNA reserves the right to revise the population down in the near future. Part 573 Safety Recall Report 23V-299 Page 5 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : DTNA is preparing remedy and is currently under development. Repairs will be performed free of charge by Daimler Truck North America authorized service facilities. Details of the reimbursement plan will be included in the owner’s notification letter. Owners are directed to seek reimbursement through authorized dealers. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Customer notification will be made by first class mail using Daimler Trucks North America records to determine the customers affected. Planned Dealer Notification Date : JUN 24, 2023 – JUN 24, 2023 Planned Owner Notification Date : JUN 24, 2023 – JUN 24, 2023 * NR – Not Reported

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