February 8, 2024 NHTSA CAMPAIGN NUMBER: 24V084000
Missing Welds May Cause Suspension Hanger Failure
Difficulty steering and a loss of directional control increases the risk of a crash.
NHTSA Campaign Number: 24V084
Manufacturer Daimler Trucks
North America, LLC
Components SUSPENSION
Potential Number of Units Affected 49
Summary
Daimler Trucks North America, LLC (DTNA) is recalling certain 2022-2024 Western Star 49X vehicles. The suspension hanger may fail due to missing welds, which can result in difficulty steering and maintaining the direction of the front two wheels.
Remedy
The remedy is currently under development. Owner notification letters are expected to be mailed April 8, 2024. Owners may contact DTNA customer service at 800-745-8000. DTNA’s number for this recall is FL994.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Chronology :
In January 2024, during a routine part inspection, DTNA observed that one of the slippered hanger assemblies may not have been welded properly. DTNA promptly opened an investigation and discovered that two assemblies lacked certain welds as specified by DTNA to the supplier. Upon further analysis, the welds were determined to be located in an area that attach to the torque rods, so that under certain circumstances, the part could fatigue and eventually fail which would affect the primary steering ability. Although DTNA is not aware of any vehicles in the field where the part has actually failed, on February 2, 2024 DTNA decided to conduct a voluntary recall on all twin steering vehicles that use these parts. To date, DTNA is not aware of any failures that have occurred, nor any claims, accidents, injuries, or deaths.
3 Affected Products
Vehicle
| MAKE | MODEL | YEAR |
| WESTERN STAR | 49X | 2022-2024 |
2 Associated Documents
Recall Acknowledgement
RCAK-24V084-3986.pdf 645.534KB
Recall 573 Report – Defect Recall Report
RCLRPT-24V084-2905.PDF 214.181KB
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OMB Control No.: 2127-0004
Part 573 Safety Recall Report 24V-084
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Daimler Trucks North America, LLC FEB 08, 2024 NHTSA Recall No. : 24V-084 Manufacturer Recall No. : FL994 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 : 49 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2024 Western Star 49X
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL
Descriptive Information : The recall population includes all Western Star 49X with slippered tandem front suspension from the start of production. The recall population is based on a review of production records.
Production Dates : AUG 16, 2021 – NOV 27, 2023
VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect :
Description of the Defect : A defect, which relates to motor vehicle safety, exists in certain model year 2022 through 2024 Western Star 49X vehicles. In the affected vehicles, the torque rods are attached to a slippered suspension hanger. The suspension hangar is missing certain welds which may then concentrate strain in the welded areas of the part. Over time, this may cause the welded areas of the part to fatigue and crack, and the part could eventually fail.
FMVSS 1 : NR FMVSS 2 : NR
Description of the Safety Risk : If the suspension hangar fails at the torque rods, it may interfere with the
functionality of the primary steering system, resulting in increased steering effort and difficulty maintaining the direction of the vehicle’s front wheels, increasing the risk of a crash. The vehicle’s braking and power steering are not affected by this issue.
Description of the Cause : Improper welding of the subject part by the supplier.
Identification of Any Warning
that can Occur :
No warnings precede a failure Part 573 Safety Recall Report 24V-084 Page 2 Involved Components : Component Name 1 : Slippered spring assembly
Component Description : Suspension and steering component hanger
Component Part Number : A16-22056-000,A16-22056-001, A16-21807-000, A16-21807-001 Supplier Identification : Component Manufacturer
Name : Q Pacific
Address : 10005 SW Herman Road
Tualatin Oregon 97062 Country : United States Chronology :
In January 2024, during a routine part inspection, DTNA observed that one of the slippered hanger assemblies may not have been welded properly. DTNA promptly opened an investigation and discovered that two assemblies lacked certain welds as specified by DTNA to the supplier. Upon further analysis, the welds were determined to be located in an area that attach to the torque rods, so that under certain circumstances, the part could fatigue and eventually fail which would affect the primary steering ability. Although DTNA is not aware of any vehicles in the field where the part has actually failed, on February 2, 2024 DTNA decided to conduct a voluntary recall on all twin steering vehicles that use these parts. To date, DTNA is not aware of any failures that have occurred, nor any claims, accidents, injuries, or deaths. Description of Remedy :
Description of Remedy Program : DTNA is currently in the process of preparing a remedy for this recall.
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 :
Identify How/When Recall Condition was Corrected in Production : The remedy component will have the correct number of welds. DTNA discovered the issue on January 10, 2024 and immediately contained the suspect parts. The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-084
Page 3
The information contained in this report was submitted pursuant to 49 CFR §573
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 : APR 08, 2024 – APR 08, 2024
Planned Owner Notification Date : APR 08, 2024 – APR 08, 2024
* NR – Not Reported
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