Recall 24V924 affects 139 2015-2020 Freightliner Business Class M2 emergency vehicles for engine-shutdown software. Free repair at a franchised Freightliner dealer.
Freightliner is recalling 139 2015-2020 Business Class M2 emergency vehicles equipped with Cummins diesel engines because engine protection and inducement software can shut the engine down unexpectedly. An engine shutdown can delay emergency responders and increase the risk of injury; Freightliner dealers will complete the repair free of charge.
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What's wrong?
The engine control software on 2015-2020 Freightliner Business Class M2 emergency vehicles manages how the Cummins diesel engine protects itself. It watches engine conditions and, when it sees a serious problem, uses warnings, power reduction, or shutdown commands to prevent damage. In an emergency vehicle, that protection has to be calibrated so the vehicle keeps operating when crews need it.
On affected Business Class M2 vehicles, engines intended for fire and other emergency service were set up with an automotive engine software rating. That internal specification error left engine protection and inducement settings in place for a vehicle that needs different emergency-use logic. The result is that the engine protection system can reduce power or shut the engine down unexpectedly.
Before shutdown, the driver should see and hear warnings from the dashboard. Those warnings include buzzers, lights, and gauges showing conditions such as low DEF or low oil pressure.
Who's affected?
Covers the Business Class M2 across the 2015-2020 model years, tied to engine-control software.
| 2020 Freightliner Business Class M2 | Software |
|---|---|
| 2018 Freightliner Business Class M2 | Software |
| 2019 Freightliner Business Class M2 | Software |
| 2015 Freightliner Business Class M2 | Software |
| 2016 Freightliner Business Class M2 | Software |
| 2017 Freightliner Business Class M2 | Software |
| Units affected | 139 |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
An unexpected engine shutdown can interrupt emergency response, delaying responders and increasing the risk of injury. Dashboard buzzers, warning lights, or gauges tied to engine protection, derate, low DEF, or low oil pressure come before shutdown. Treat those warnings as a reason to pull over safely and call the dealer. Repair is free at any franchised Freightliner dealer.
What should I do?
- Check your VIN to confirm your 2015-2020 Freightliner Business Class M2 is included in this recall.
- Contact a franchised Freightliner dealer to schedule the free engine-control software update and corrected data plate, which fixes the unexpected engine-shutdown risk.
- Bring the owner letter if you have it. If not, reference recall number 24V924 when you call.
- Plan around the shutdown risk until the update is complete, especially for emergency-response assignments.
- Call Freightliner customer service at 1-800-547-0712 with questions.
What happens at the repair
At the dealer, a Freightliner technician updates the electronic control module software and installs a corrected data plate. The software update and data plate are free under the recall, with parts and labor covered. If you paid out of pocket for a related repair before the owner letter, seek reimbursement through an authorized dealer as directed in the reimbursement plan. Bring the owner letter and any repair paperwork so the service desk can connect the claim to recall 24V924.
| Reimbursement | Reimbursement available |
|---|
Timeline
| December 11, 2024 | NHTSA published the recall |
|---|---|
| December 31, 2024 | Dealer notification began |
| December 31, 2024 | Dealer notification ended |
| February 5, 2025 | Owner notification mailed |
| February 9, 2025 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V924?
Recall 24V924 covers 139 2015-2020 Freightliner Business Class M2 emergency vehicles with certain Cummins diesel engines. The engine protection and inducement software can shut the engine down unexpectedly. Cummins will update the electronic control module software and install a corrected data plate for free.
What should I do if my 2015-2020 Freightliner Business Class M2 is on this recall?
Check your VIN to confirm your specific emergency vehicle is included in recall 24V924. If it is, contact a franchised Freightliner dealer or DTNA customer service at 1-800-547-0712 and reference DTNA recall F1012. The software update and corrected data plate are free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to fix the defect at no cost. For recall 24V924, Cummins will update the electronic control module software and install a corrected data plate free of charge.
What is the safety risk?
The safety risk is an unexpected engine shutdown in an emergency vehicle. If the engine shuts down during a response, emergency responders can be delayed, increasing the risk of injury. The repair updates the engine control software that causes the shutdown risk.
When were owners notified about this Freightliner recall?
Owner notification letters were mailed February 5, 2025. If you bought the vehicle used or never received a letter, check your VIN and reference recall 24V924 or DTNA recall F1012 when you contact the dealer.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V924000 |
|---|---|
| Freightliner customer service | 1-800-547-0712 |
| NHTSA recall # | 24V924 |
| NHTSA recall # (full) | 24V924000 |
Source documents
-
Download Quarterly Report (PDF) - Download Owner Notice (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (PDF)
- Download Misc. Document (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 →