FL975 – Turn Signal Malfunction – 2023 Western Star 57X

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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) FL975 Date of Submission: 5/16/2023 Manufacturer: Daimler Truck North America LLC P.O. BOX 3849 Portland, Oregon 97208 Type of Report: ⃝ Safety Defect ✔ Non-Compliance Vehicle Information Make Model Model Yr. Start Model Yr. End Prod. Begin Date Prod. End Date Western Star 57X 2023 2023 08/03/2022 01/18/2023 Descriptive Information: On certain vehicles Western Star 57X 2023 vehicles fail to conform to the Federal Motor Vehicle Safety Standard No 108 Lamp, Reflective Devices and Associated Equipment, due to the turn indicator telltale lamps on the instrument cluster flash at a faster rate than the exterior turn signal lamps. FMVSS 108 requires the turn signal pilot indicator to have one or more lights flashing at the same frequency as the turn signal lamps. Basis for Determination of the Recall Population: Vehicles built with a particular headlamp parameter. Number potentially involved: 47 Estimated percentage of involved with defect: 1% Defect / Noncompliance Description For this Defect/Noncompliance: Describe the defect or noncompliance: On certain Western Star 57X 2023 vehicles fail to conform to the Federal Motor Vehicle Safety Standard No. 108 Lamp, Reflective Devices and Associated Equipment, requires the turn signal pilot indicator to have one or more lights flashing at the same frequency as the exterior turn DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM signal lamps. This may result in the operator wrongly assuming that, there is a fault in the turn signal system. Describe the safety risk: On the affected vehicles, Western Star 57X, MY 2023 fail to conform to the Federal Motor Vehicle Safety Standard No. 108 Lamp, Reflective Devices and Associated Equipment. This may result in the operator wrongly assuming that, there is a fault in the turn signal system, and may be wrongly alerted to one turn signal bulb is out. Identify any warning, which can precede or occur: The defect will be apparent because the turn signal telltale lamps on the instrument cluster flashes at a faster rate than normal operation. If applicable, identify the manufacturer of the defective or noncompliant component: Daimler Truck North America Involved Components Component Name: Headlamp Software Parameter Component Description: Headlamp Software Parameter Component Part Number: 81Z-006 Component’s country of origin: USA Business address: 4747 N Channel Ave, Portland, OR 97217 Business Contact Information: First / Last Name: Sam Geser Position: Product Defect Investigation Engineering Manager Email: sam.geser@daimlertruck.com Phone: 503-381-7736 Chronology of Defect / Noncompliance Determination On March 31, 2023, DTNA engineering observed a potential noncompliance, suggesting possible difference in rate of flash between instrument cluster turn indicator telltale lamps and exterior turn signals. DTNA promptly began an investigation that revealed that, on a specific population of vehicles built with incorrect headlamp parameters, there is a possibility of turn signal telltale lamps on the instrument cluster flashing at a faster rate than the exterior turn signal lamps. In April 2023, DTNA performed a field seek to identify any related claims. Later in that same month, DTNA’s review found two claims related to turn signal telltale lamps on the DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM instrument cluster flashing at a faster rate. Mid-April 2023, DTNA management reviewed the problem and reasonably determined the turn signal telltale lamps on the instrument cluster were compliant as the issue was believed to be contained in production. However, on May 5, 2023, it was found that some vehicles might have been released into the field with incorrect headlamp parameters. DTNA determined the said telltale lamps did not meet the flash-rate regulations as required by FMVSS 108. Promptly thereafter, on May 16 2023, DTNA made a determination to conduct a voluntary non-compliance recall on affected Western Star 57X vehicles built within the above-mentioned manufacturing date range that are equipped with the incorrect headlamp parameters. Identify the Remedy 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. Identify the 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 Begin Date: 7/15/2023 Planned Dealer Notification End Date: 7/15/2023 Planned Owner Notification Begin Date: 7/15/2023 Planned Owner Notification End Date: 7/15/2023 Does DTNA plan to file inconsequentiality petition? ⃝ Yes ✔ No Manufacturer’s identification code for this recall (if applicable): FL975 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-348 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Daimler Trucks North America, LLC Submission Date : MAY 16, 2023 NHTSA Recall No. : 23V-348 Manufacturer Recall No. : FL975 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 : 47 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2023-2023 Western Star 57X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : On certain vehicles Western Star 57X 2023 vehicles fail to conform to the Federal Motor Vehicle Safety Standard No 108 Lamp, Reflective Devices and Associated Equipment, due to the turn indicator telltale lamps on the instrument cluster flash at a faster rate than the exterior turn signal lamps. FMVSS 108 requires the turn signal pilot indicator to have one or more lights flashing at the same frequency as the turn signal lamps. Production Dates : AUG 03, 2022 – JAN 18, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Description of Noncompliance : Description of the Noncompliance : On certain Western Star 57X 2023 vehicles fail to conform to the Federal Motor Vehicle Safety Standard No. 108 Lamp, Reflective Devices and Associated Equipment, requires the turn signal pilot indicator to have one or more lights flashing at the same frequency as the exterior turn signal lamps. This may result in the operator wrongly assuming that, there is a fault in the turn signal system. FMVSS 1 : 108 – Lamps, reflective devices, and assoc. Equipment FMVSS 2 : NR Description of the Safety Risk : On the affected vehicles, Western Star 57X, MY 2023 fail to conform to the Federal Motor Vehicle Safety Standard No. 108 Lamp, Reflective Devices and Associated Equipment. This may result in the operator wrongly assuming that, there is a fault in the turn signal system, and may be wrongly alerted to one turn signal bulb is out. Part 573 Safety Recall Report 23V-348 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Cause : NR Identification of Any Warning that can Occur : The defect will be apparent because the turn signal telltale lamps on the instrument cluster flashes at a faster rate than normal operation. Involved Components : Component Name 1 : Headlamp Software Parameter Component Description : Headlamp Software Parameter Component Part Number : 81Z-006 Supplier Identification : Component Manufacturer Name : Daimler Truck North America Address : NR NR Country : NR Chronology : On March 31, 2023, DTNA engineering observed a potential noncompliance, suggesting possible difference in rate of flash between instrument cluster turn indicator telltale lamps and exterior turn signals. DTNA promptly began an investigation that revealed that, on a specific population of vehicles built with incorrect headlamp parameters, there is a possibility of turn signal telltale lamps on the instrument cluster flashing at a faster rate than the exterior turn signal lamps. In April 2023, DTNA performed a field seek to identify any related claims. Later in that same month, DTNA’s review found two claims related to turn signal telltale lamps on the instrument cluster flashing at a faster rate. Mid-April 2023, DTNA management reviewed the problem and reasonably determined the turn signal telltale lamps on the instrument cluster were compliant as the issue was believed to be contained in production. However, on May 5, 2023, it was found that some vehicles might have been released into the field with incorrect headlamp parameters. DTNA determined the said telltale lamps did not meet the flash-rate regulations as required by FMVSS 108. Promptly thereafter, on May 16 2023, DTNA made a determination to conduct a voluntary non-compliance recall on affected Western Star 57X vehicles built within the above-mentioned manufacturing date range that are equipped with the incorrect headlamp parameters. Part 573 Safety Recall Report 23V-348 Page 3 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 : JUL 15, 2023 – JUL 15, 2023 Planned Owner Notification Date : JUL 15, 2023 – JUL 15, 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) FL975 Date of Submission: 5/16/2023 (Amended 5/24/2023) Manufacturer: Daimler Truck North America LLC P.O. BOX 3849 Portland, Oregon 97208 Type of Report: ⃝ Safety Defect ✔ Non-Compliance Vehicle Information Make Model Model Yr. Start Model Yr. End Prod. Begin Date Prod. End Date Western Star 57X 2023 2023 08/03/2022 01/18/2023 Descriptive Information: On certain vehicles Western Star 57X 2023 vehicles fail to conform to the Federal Motor Vehicle Safety Standard No 108 Lamp, Reflective Devices and Associated Equipment, due to the turn indicator telltale lamps on the instrument cluster flash at a faster rate than the exterior turn signal lamps. FMVSS 108 requires the turn signal pilot indicator to have one or more lights flashing at the same frequency as the turn signal lamps. Basis for Determination of the Recall Population: Vehicles built with a particular headlamp parameter. Number potentially involved: 47 Estimated percentage of involved with defect: 1% Defect / Noncompliance Description For this Defect/Noncompliance: Describe the defect or noncompliance: On certain Western Star 57X 2023 vehicles fail to conform to the Federal Motor Vehicle Safety Standard No. 108 Lamp, Reflective Devices and Associated Equipment, requires the turn signal pilot indicator to have one or more lights flashing at the same frequency as the exterior turn DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM signal lamps. This may result in the operator wrongly assuming that, there is a fault in the turn signal system. Describe the safety risk: On the affected vehicles, Western Star 57X, MY 2023 fail to conform to the Federal Motor Vehicle Safety Standard No. 108 Lamp, Reflective Devices and Associated Equipment. Interior turn signal indicators may flash at a faster rate. The driver does not see a change of state when a bulb is out, and thus may drive with a nonfunctioning exterior turn signal, increasing the risk of a crash. Identify any warning, which can precede or occur: The defect will be apparent because the turn signal telltale lamps on the instrument cluster flashes at a faster rate than normal operation. If applicable, identify the manufacturer of the defective or noncompliant component: Daimler Truck North America Involved Components Component Name: Headlamp Software Parameter Component Description: Headlamp Software Parameter Component Part Number: 81Z-006 Component’s country of origin: USA Business address: 4747 N Channel Ave, Portland, OR 97217 Business Contact Information: First / Last Name: Sam Geser Position: Product Defect Investigation Engineering Manager Email: sam.geser@daimlertruck.com Phone: 503-381-7736 Chronology of Defect / Noncompliance Determination On March 31, 2023, DTNA engineering observed a potential noncompliance, suggesting possible difference in rate of flash between instrument cluster turn indicator telltale lamps and exterior turn signals. DTNA promptly began an investigation that revealed that, on a specific population of vehicles built with incorrect headlamp parameters, there is a possibility of turn signal telltale lamps on the instrument cluster flashing at a faster rate than the exterior turn signal lamps. In April 2023, DTNA performed a field seek to identify any related claims. Later in DAIMLER TRUCK NORTH AMERICA | 4555 N CHANNEL AVE, PORTLAND, OR 97217 | 503.745.8000 | WWW.DAIMLERTRUCKNORTHAMERICA.COM that same month, DTNA’s review found two claims related to turn signal telltale lamps on the instrument cluster flashing at a faster rate. Mid-April 2023, DTNA management reviewed the problem and reasonably determined the turn signal telltale lamps on the instrument cluster were compliant as the issue was believed to be contained in production. However, on May 5, 2023, it was found that some vehicles might have been released into the field with incorrect headlamp parameters. DTNA determined the said telltale lamps did not meet the flash-rate regulations as required by FMVSS 108. Promptly thereafter, on May 16 2023, DTNA made a determination to conduct a voluntary non-compliance recall on affected Western Star 57X vehicles built within the above-mentioned manufacturing date range that are equipped with the incorrect headlamp parameters. On May 24, 2023, updated the risk statement per email with RMD. Identify the Remedy 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. Identify the 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 Begin Date: 7/15/2023 Planned Dealer Notification End Date: 7/15/2023 Planned Owner Notification Begin Date: 7/15/2023 Planned Owner Notification End Date: 7/15/2023 Does DTNA plan to file inconsequentiality petition? ⃝ Yes ✔ No Manufacturer’s identification code for this recall (if applicable): FL975 DTNA Representative; Tiffani Torgeson Manager, Compliance and Regulatory Affairs

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-348 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Daimler Trucks North America, LLC Submission Date : MAY 24, 2023 NHTSA Recall No. : 23V-348 Manufacturer Recall No. : FL975 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 : 47 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2023-2023 Western Star 57X Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : On certain vehicles Western Star 57X 2023 vehicles fail to conform to the Federal Motor Vehicle Safety Standard No 108 Lamp, Reflective Devices and Associated Equipment, due to the turn indicator telltale lamps on the instrument cluster flash at a faster rate than the exterior turn signal lamps. FMVSS 108 requires the turn signal pilot indicator to have one or more lights flashing at the same frequency as the turn signal lamps. Production Dates : AUG 03, 2022 – JAN 18, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Description of Noncompliance : Description of the Noncompliance : On certain Western Star 57X 2023 vehicles fail to conform to the Federal Motor Vehicle Safety Standard No. 108 Lamp, Reflective Devices and Associated Equipment, requires the turn signal pilot indicator to have one or more lights flashing at the same frequency as the exterior turn signal lamps. This may result in the operator wrongly assuming that, there is a fault in the turn signal system. FMVSS 1 : 108 – Lamps, reflective devices, and assoc. Equipment FMVSS 2 : NR Description of the Safety Risk : On the affected vehicles, Western Star 57X, MY 2023 fail to conform to the Federal Motor Vehicle Safety Standard No. 108 Lamp, Reflective Devices and Associated Equipment. Interior turn signal indicators may flash at a faster rate. The driver does not see a change of state when a bulb is out, and thus may drive with a nonfunctioning exterior turn signal, increasing the risk of a Part 573 Safety Recall Report 23V-348 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 crash. Description of the Cause : NR Identification of Any Warning that can Occur : The defect will be apparent because the turn signal telltale lamps on the instrument cluster flashes at a faster rate than normal operation. Involved Components : Component Name 1 : Headlamp Software Parameter Component Description : Headlamp Software Parameter Component Part Number : 81Z-006 Supplier Identification : Component Manufacturer Name : Daimler Truck North America Address : NR NR Country : NR Chronology : On March 31, 2023, DTNA engineering observed a potential noncompliance, suggesting possible difference in rate of flash between instrument cluster turn indicator telltale lamps and exterior turn signals. DTNA promptly began an investigation that revealed that, on a specific population of vehicles built with incorrect headlamp parameters, there is a possibility of turn signal telltale lamps on the instrument cluster flashing at a faster rate than the exterior turn signal lamps. In April 2023, DTNA performed a field seek to identify any related claims. Later in that same month, DTNA’s review found two claims related to turn signal telltale lamps on the instrument cluster flashing at a faster rate. Mid-April 2023, DTNA management reviewed the problem and reasonably determined the turn signal telltale lamps on the instrument cluster were compliant as the issue was believed to be contained in production. However, on May 5, 2023, it was found that some vehicles might have been released into the field with incorrect headlamp parameters. DTNA determined the said telltale lamps did not meet the flash-rate regulations as required by FMVSS 108. Promptly thereafter, on May 16 2023, DTNA made a determination to conduct a voluntary non-compliance recall on affected Western Star 57X vehicles built within the above-mentioned manufacturing date range that are equipped with the incorrect headlamp parameters. On May 24, 2023, updated the risk statement per email with RMD. Part 573 Safety Recall Report 23V-348 Page 3 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 : JUL 15, 2023 – JUL 15, 2023 Planned Owner Notification Date : JUL 15, 2023 – JUL 15, 2023 * NR – Not Reported

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