Recall 25V187 covers 1,968 2025-2026 Freightliner and Western Star trucks for brake lights that fail. Software repair is free at franchised Freightliner dealers.
Freightliner is recalling 1,968 2025-2026 Business Class M2, Cascadia, 108SD, 114SD, EM2, Western Star 47X, and Western Star 49X vehicles because a software error in the automatic emergency braking signal module can keep brake lights from illuminating. Brake lights that fail increase crash risk, and Freightliner dealers will update the software free of charge.
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What's wrong?
The advanced signal and actuator module is part of the automatic emergency braking system on the 2025-2026 Business Class M2, 47X, 49X, 114SD, Cascadia, 108SD, and EM2 vehicles. It helps route electronic commands when the truck applies braking on its own. In normal operation, that command path also tells the brake lamps to illuminate so traffic behind the truck sees that braking is happening.
On affected vehicles without towing provisions, a software parameter in the module is wrong. During a vehicle-induced hard braking event, the automatic emergency braking system can apply the brakes without sending the right electronic signal to the brake lamps. Vehicles with towing provisions have a pneumatic path that still turns the brake lamps on, so this defect is limited to the affected configuration.
There is no warning sign before failure. The driver does not get a dashboard cue that the brake lamps failed to illuminate during automatic emergency braking.
Who's affected?
Covers Business Class M2, 47X, 49X, 114SD, Cascadia, 108SD, and EM2 trucks from the 2025-2026 model years, all using the ASAM 2025 Software Pack for brake-light and automatic emergency braking functions.
| 2025 Freightliner Business Class M2 | Brake lights |
|---|---|
| 2025 Freightliner Business Class M2 | Automatic emergency braking |
| 2025 Western Star 47X | Brake lights |
| 2025 Western Star 47X | Automatic emergency braking |
| 2026 Western Star 47X | Brake lights |
| 2026 Western Star 47X | Automatic emergency braking |
| 2025 Western Star 49X | Brake lights |
| 2025 Western Star 49X | Automatic emergency braking |
| 2026 Western Star 49X | Brake lights |
| 2026 Western Star 49X | Automatic emergency braking |
| 2026 Freightliner 114SD | Brake lights |
| 2026 Freightliner 114SD | Automatic emergency braking |
| 2026 Freightliner Business Class M2 | Brake lights |
| 2026 Freightliner Business Class M2 | Automatic emergency braking |
| 2026 Freightliner Cascadia | Brake lights |
| 2026 Freightliner Cascadia | Automatic emergency braking |
| 2026 Freightliner 108SD | Brake lights |
| 2026 Freightliner 108SD | Automatic emergency braking |
| 2026 Freightliner EM2 | Brake lights |
| 2026 Freightliner EM2 | Automatic emergency braking |
| Units affected | 1,968 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
NHTSA says brake lights that fail increase the risk of a crash. If your VIN is included, use extra space in traffic and schedule the software update soon. Repair is free at any franchised Freightliner dealer.
What should I do?
- Check your VIN to confirm your 2025-2026 Freightliner or Western Star truck is included in this recall.
- Contact a franchised Freightliner or Western Star dealer to schedule the free automatic-emergency-braking software update that fixes the brake-light illumination error.
- Bring the recall notice if you have it. If not, reference recall number 25V187 when you call.
- Drive with extra following distance until the software update is complete, since failed brake lights increase crash risk.
What happens at the repair
At the dealer, a Freightliner technician updates the automatic emergency braking system software so the system can control the brake light signal correctly. The recall repair is free, with parts and labor covered by the campaign. If you already paid for a related software or brake light repair before the recall notice, seek reimbursement through an authorized Freightliner dealer. Bring repair invoices and payment records so the service desk can review them under DTNA's reimbursement process.
| Reimbursement | Reimbursement available |
|---|
Timeline
| March 25, 2025 | NHTSA published the recall |
|---|---|
| April 14, 2025 | Dealer notification began |
| April 14, 2025 | Dealer notification ended |
| May 15, 2025 | Owner notification mailed |
| May 24, 2025 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| May 24, 2025 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 25V187?
Recall 25V187 covers 1,968 2025-2026 Freightliner vehicles with an automatic emergency braking software error that can stop the brake lights from illuminating. Brake lights that fail increase crash risk. Dealers will update the automatic emergency braking system software for free.
What should I do if my 2025-2026 Freightliner Business Class M2, 47X, 49X, 114SD, Cascadia, 108SD, or EM2 is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 25V187. If it is, contact a franchised Freightliner dealer to schedule the automatic emergency braking system software update. Reference recall number 25V187 and DTNA recall F1018 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. For recall 25V187, dealers will update the automatic emergency braking system software free of charge.
What is the safety risk?
The safety risk is reduced visibility to drivers behind you when the brake lights fail to illuminate. The automatic emergency braking software error affects the brake-light signal, and brake lights that fail increase the risk of a crash.
When were owners notified about recall 25V187?
Owner notification letters were mailed May 15, 2025. If you did not receive a letter, check your VIN because used vehicles, fleet transfers, and address changes can keep a notice from reaching the current owner.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/25V187000 |
|---|---|
| Freightliner customer service | 1-800-547-0712 |
| NHTSA recall # | 25V187 |
| NHTSA recall # (full) | 25V187000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 19, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →