January 10, 2024 NHTSA CAMPAIGN NUMBER: 24V013000
Delay in Park Brake Engagement/FMVSS 121
Unintentional vehicle movement can increase the risk of a crash or injury.
NHTSA Campaign Number: 24V013
Manufacturer Daimler Trucks
North America, LLC
Components PARKING BRAKE
Potential Number of Units Affected 149
Summary
Daimler Trucks North America, LLC (DTNA) is recalling certain 2023-2024 Western Star 4900 and 2023 Western Star 6900 vehicles. A defect in the inversion valve may delay park brake engagement, which could allow the vehicle to move unintentionally. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, “Air Brake Systems.”
Remedy
The remedy is currently under development. Owner notification letters are expected to be mailed March 10, 2024. Owners may contact DTNA customer service at 1-800-547-0712. DTNA’s number for this recall is FL992.
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.nhtsa.gov.
Check for Daimler Trucks North America Recalls
573 Chronology:
On November 15th, 2023, DTNA was notified by ZF that another vehicle manufacturer, Spartan Fire, had initiated a recall of certain vehicles equipped with inversion valves supplied by ZF on the basis that the parking brake engagement may not meet the requirements of FMVSS 121. ZF informed DTNA that it may have supplied DTNA with the same or similar parts as those provided to Spartan but did not provide DTNA with any further details at that time. DTNA immediately began an investigation to evaluate whether those valves, when installed in the manner and in the specific vehicle applications used by DTNA , could experience the same or similar issues described by Spartan. In particular, DTNA’s investigation was focused on the potential for delay of the parking brake engagement and the length of any delay in the park brake engagement. Through December into January, DTNA attempted to engage with its supplier for further information on multiple occasions. DTNA reviewed its warranty database and identified one warranty claim that appeared similar to the statement made by Spartan in its recall filing, but which did not contain sufficient information to make a determinative assessment. In the meantime, DTNA continued to engage with its supplier to better understand the issue.
On January 3, 2024, ZF advised DTNA that a specific shipment of inversion valves may contain the same defect as that identified in Spartan’s recall report and that there was no information available to ZF that would indicate the valve would function any differently in the DTNA application.
Because it cannot rule out the possibility of delayed park brake engagement and out of an abundance of caution, DTNA decided on January 10, 2024, to conduct a recall to address a noncompliance in the affected vehicles.
A review of claims, field reports, customer complaints, VOQs, incident reports, etc. uncovered only one warranty claim (documented on 06/09/2023) that may relate to the present issue. The are no accident for death or injuries known.
01/10/2024
3 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| WESTERN STAR | 4900 | 2023-2024 |
| WESTERN STAR | 6900 | 2023 |
3 Associated Documents
Noncompliance Notice 573 Report
RCLRPT-24V013-7401.PDF 214.001KB
Recall Acknowledgement
Chronology Report
RMISC-24V013-3355.pdf 74.977KB
Latest Recalls Documents
For the Latest and Most recent Recall Information Visit the link below…
- TR-3 type air brake inversion valve rated for 25 PSI/40 PSI service, ideal for commercial truck and bus applications requiring dependable trailer release control.
- Features 0.25" NPT supply and delivery ports, and a 0.125" control port; opening pressure is 85 PSI, with dual 9/32" mounting holes for easy installation.
- Precision-machined for optimal airflow control and reliability under pressure; supports control/supply coordination across heavy-duty air brake systems.
- Constructed for compatibility with OE specifications, ensuring seamless fitment on Mack, Freightliner, Volvo, Navistar, and other HD vehicle platforms.
- Direct replacement for OE and aftermarket part numbers including Bendix 281459, 281459RX, 101450N, Automann 170.281459, Caterpillar 3Z-2313, and more (full list below).
- Inversion Valve
- Designed to meet original part specifications
- Highly durable
- Exact fitment and original replacement
- Replacement OEMs: 280758, 281053, 280758BXW, 280758N, 281053N, 745280758N, BEN280758, BEN-280758, BER280758, BW281053, BX280758, BX280758N, BX281053, 6D-1039, BW 280758, BW 280758N, BW280758, BW280758N, 3902813, 8084521
- Tr-3 Valve (45Psi/60Psi)
- 18 Months Warranty - This product is covered for one year or completion of 100000 miles since installation or 18 months after your purchase whichever comes first.
- Replaces OEM: 281459
- Inversion Valve
- 18 Months Warranty - This product is covered for one year or completion of 100000 miles since installation or 18 months after your purchase whichever comes first.
- Item Package Dimension: 9.37L x 9.37W x 7.01H inches
- Item Package Weight - 4.2 Pounds
- Item Package Quantity - 1
- Product Type - AUTO PART
- Technical Specifications
Last update on 2026-06-19 / Affiliate links / Images from Amazon Product Advertising API
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OMB Control No.: 2127-0004
Part 573 Safety Recall Report 24V-013
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
Daimler Trucks North America, LLC JAN 10, 2024 NHTSA Recall No. : 24V-013 Manufacturer Recall No. : FL992 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 : 149 Estimated percentage with defect : 46 % Vehicle Information : Vehicle 1 : 2023-2024 Western Star 4900 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : 2-DOOR Power Train : DIESEL
Descriptive Information : Certain Western star 4900 and 6900 (model year 2023 and 2024) vehicles in the above listed production range built with suspect ZF inversion valves. The basis for the recall population was determined based on vehicle production records and information provided by its supplier.
Production Dates : JUN 17, 2022 – SEP 11, 2023
VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2023-2023 Western Star 6900 Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : 2-DOOR Power Train : DIESEL
Descriptive Information : Certain Western star 4900 and 6900 (model year 2023 and 2024) Vehicles in the above listed production range built with suspect ZF inversion valves. The basis for the recall population was determined based on vehicle production records and information provided by its supplier.
Production Dates : AUG 18, 2022 – JUN 14, 2023
VIN Range 1 : Begin : NR End : NR Not sequential Part 573 Safety Recall Report 24V-013 Page 2 Description of Noncompliance : Description of the Noncompliance : According to information provided by DTNA’s supplier, certain Western star 4900 and 6900 vehicles (model year 2023 and 2024) fail to conform to the Federal Motor Vehicle Safety Standard No. 121 Air brake systems. built with inversion valves can allow for intermittent delays in park brake engagement, potentially preventing the parking brakes from engaging within 3 seconds of applications. FMVSS 1 : 121 – Air brake systems FMVSS 2 : NR
Description of the Safety Risk : On the affected vehicles, due to noncompliance with the requirements of
FMVSS 121, Air brake systems if activation of the park brake is delayed, the park brake may not engage within three seconds of application. This may result in a failure to engage the park brake within the specified time could increase the risk of a vehicle rollaway and crash..
Description of the Cause : NR Identification of Any Warning
that can Occur : In the event of a delayed valve, the vehicle operator may notice the lack of a normal park brake exhaust noise. Involved Components : Component Name 1 : Inversion Valve
Component Description : Brake System Pneumatic Valve Component Part Number : WAB971 899 002 0 Supplier Identification : Component Manufacturer
Name : Wabco / ZF Group Address : 12001 Tech Center Drive
Livonia Michigan 48150
Country : United States Chronology :
Refer attached chronology. The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 24V-013
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 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 : MAR 10, 2024 – MAR 10, 2024
Planned Owner Notification Date : MAR 10, 2024 – MAR 10, 2024
* NR – Not Reported
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