Recall 23V073 covers 70,167 2017-2023 Western Star 49X, 47X, 114SD and Cascadia trucks for corroding brake modulators. Free repair at any franchised Western Star dealer.
Western Star recall 23V073 covers 70,167 2017-2023 49X, 47X, 114SD, and Cascadia vehicles because front-axle brake modulator valves can corrode. During braking triggered by ESC or Roll Stability Control, the vehicle can pull to one side and change direction suddenly, increasing crash risk; the dealer repair is free.
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What's wrong?
The single ABS modulator valve on the affected 2017-2023 Western Star 49X, 47X, 114SD, and Cascadia trucks is a quick-release air brake valve on the front axle. It meters air pressure during normal braking and during stability-control events, when Electronic Stability Control or Roll Stability Control applies braking to help keep the truck pointed where the driver intends.
On affected trucks, the front brake modulator valve corrodes. Corrosion contamination inside the valve interferes with how air pressure is released and applied. During braking started by the stability-control system, that uneven pressure can make the truck pull toward the affected side instead of braking evenly.
The warning sign is an ABS malfunction light before the valve is fully contaminated by corrosion. If that light appears, treat it as a brake-system warning and have the truck checked before relying on the stability-control system in a hard braking or roll-control event.
Who's affected?
Covers four truck lines across the 2017-2023 model years, all tied to the same single ABS modulator valve.
| 2023 Western Star 49X | Electronic stability control (esc) |
|---|---|
| 2023 Western Star 49X | anti-lock brake system (ABS) |
| 2023 Western Star 47X | Electronic stability control (esc) |
| 2023 Western Star 47X | anti-lock brake system (ABS) |
| 2022 Western Star 47X | Electronic stability control (esc) |
| 2022 Western Star 47X | anti-lock brake system (ABS) |
| 2022 Western Star 49X | Electronic stability control (esc) |
| 2022 Western Star 49X | anti-lock brake system (ABS) |
| 2022 Freightliner 114SD | Electronic stability control (esc) |
| 2022 Freightliner 114SD | anti-lock brake system (ABS) |
| 2018 Freightliner Cascadia | Electronic stability control (esc) |
| 2018 Freightliner Cascadia | anti-lock brake system (ABS) |
| 2017 Freightliner Cascadia | Electronic stability control (esc) |
| 2017 Freightliner Cascadia | anti-lock brake system (ABS) |
| 2021 Western Star 49X | Electronic stability control (esc) |
| 2021 Western Star 49X | anti-lock brake system (ABS) |
| 2021 Western Star 47X | Electronic stability control (esc) |
| 2021 Western Star 47X | anti-lock brake system (ABS) |
| 2020 Western Star 49X | Electronic stability control (esc) |
| 2020 Western Star 49X | anti-lock brake system (ABS) |
| 2023 Freightliner Cascadia | Electronic stability control (esc) |
| 2023 Freightliner Cascadia | anti-lock brake system (ABS) |
| 2022 Freightliner Cascadia | Electronic stability control (esc) |
| 2022 Freightliner Cascadia | anti-lock brake system (ABS) |
| 2020 Freightliner Cascadia | Electronic stability control (esc) |
| 2020 Freightliner Cascadia | anti-lock brake system (ABS) |
| 2019 Freightliner Cascadia | Electronic stability control (esc) |
| 2019 Freightliner Cascadia | anti-lock brake system (ABS) |
| 2021 Freightliner Cascadia | Electronic stability control (esc) |
| 2021 Freightliner Cascadia | anti-lock brake system (ABS) |
| Units affected | 70,167 |
A matching year and model does not confirm inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
Brakes that pull to one side can change vehicle direction suddenly and increase crash risk. If the truck pulls while braking or shows an ABS malfunction light, slow down, keep more space around the vehicle, and schedule service promptly. Repair is free at any franchised Western Star dealer.
What should I do?
- Check your VIN to confirm your 2017-2023 Western Star 49X, Western Star 47X, Freightliner 114SD, or Freightliner Cascadia is included in this recall.
- Contact a franchised Western Star dealer to schedule the free brake-modulator-valve inspection and replacement or software update.
- Bring the recall notice if Western Star mailed one. If not, reference recall number 23V073 when you call.
- Drive cautiously until the repair is complete. Leave extra following distance and get service promptly if the truck pulls to one side during braking.
- Call Western Star customer service at 1-800-547-0712 with questions about scheduling or recall number 23V073.
What happens at the repair
At the dealer, a Western Star technician inspects the front brake modulator valves and replaces any valve that needs replacement. Some vehicles also receive a software update that alerts the driver when replacement is required. Parts and labor are covered under the recall. Daimler Truck North America is offering a refund for owner-paid repairs covered by this recall when the repair was completed before the date listed in the reimbursement plan. Take your repair paperwork to an authorized dealer to request reimbursement.
| Reimbursement | Reimbursement available |
|---|
Timeline
| February 10, 2023 | NHTSA published the recall |
|---|---|
| April 10, 2023 | Dealer notification began |
| April 10, 2023 | Dealer notification ended |
| April 10, 2023 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| April 10, 2023 | Interim owner notification (was planned for this date) |
| October 13, 2023 | Owner notification mailed |
Frequently asked questions
What is recall 23V073?
Recall 23V073 covers 70,167 2017-2023 Western Star 49X, 47X, 114SD, and Cascadia trucks with front-axle brake modulator valves that can corrode. During ESC or RSC braking, the truck can pull to one side, increasing crash risk. Dealers will inspect and replace valves for free.
What should I do if my 2017-2023 Western Star 49X, 47X, 114SD, or Cascadia is on this recall?
Check your VIN to confirm your specific truck is included in recall 23V073. If it is, contact a franchised Western Star dealer to schedule the inspection. The dealer will replace the front brake modulator valves when required, and selected trucks will receive driver-alert software. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and the recall remedy says all repairs will be performed free of charge. A franchised Western Star dealer will inspect the front brake modulator valves and complete the needed valve replacement or software update.
What is the safety risk in recall 23V073?
The safety risk is a sudden pull to one side during ESC or RSC braking. Corroded front-axle brake modulator valves can make the truck change direction during a braking event, increasing crash risk. Confirm the VIN, then schedule the free dealer repair.
When were owners notified about recall 23V073?
Western Star mailed owner notification letters beginning October 13, 2023. If you bought the truck used or never received a letter, the VIN still decides whether the recall applies. Check your VIN and reference recall number 23V073 when you call the dealer.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V073000 |
|---|---|
| Western Star customer service | 1-800-547-0712 |
| NHTSA recall # | 23V073 |
| NHTSA recall # (full) | 23V073000 |
Source documents
-
Download Owner Notice (PDF) - Download Quarterly Report (PDF)
- Download Misc. Document (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Report (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →