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Electrical system

2021 Freightliner M2 Electrical problems

Owners have filed 3 complaints about the 2021 Freightliner M2's electrical system with NHTSA - 38% of all its complaints, most recently on September 12, 2026. Dead batteries, warning lights, wiring, alternators, infotainment and electronic module failures.

Complaints
3
Recalls
0
Crashes
0
Fires
0
Injuries
0
Deaths
0

Electrical complaints

Electrical systemEngine & cooling

While driving on the Interstate check-engine light came on, engine governed to very slow speeds and ultimately became undrivable. This has happened twice. In May and August of 2026. According to Velocity Truck Centers in North Las Vegas, NV Engine harness contacted and chafed around air compressor. Vehicle is at Velocity Truck Centers in North Las Vegas, NV. This is the same failure as described in DTNA's recall FL-858.

Filed Incident Electrical system · EngineNHTSA 11763795
Electrical system

The contact owns a 2021 Freightliner XC Line Motorhome. The contact stated that the ICU on the coach had delaminated over time and made it difficult to read. There was no warning light illuminated. The vehicle was diagnosed, and the contact was advised that the ICU panel was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 17,800.

Filed Incident Electrical systemNHTSA 11672079
Electrical systemEngine & cooling

The contact owns a 2021 Freightliner M2. The contact stated that while a driver was driving at an undisclosed speed, the vehicle started decelerating unintendedly and then stalled. There were no warning lights illuminated. The driver was able to coast to the side of the roadway. The driver was unable to restart the vehicle. The vehicle was towed to the dealer who stated that there was an excessive amount of oil in the engine. The dealer determined that the engine had failed and needed to be replaced. The dealer...

Read the full complaint

linked the failure to NHTSA Campaign Number: 20V466000 (Electrical System, Engine); but the VIN was not included in the recall, and the vehicle was out of warranty. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 151,024.

Filed Incident Electrical system · EngineNHTSA 11634557

Freightliner M2 electrical complaints by year

M2 electrical problems, every year

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Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data

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