2021 Freightliner M2 Electrical system Problems
- Complaints
- 3about this part
- Share
- 38%of 8 total for the year
- Median mileage
- 84,412miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the electrical system of the 2021 Freightliner M2, 38% of the 8 complaints for this model year. Where a mileage was given, the median is 84,412 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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.”
NHTSA complaint #11672079, filed 2025-07, 17,800 miles“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.”
NHTSA complaint #11763795, filed 2026-09“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. …”
NHTSA complaint #11634557, filed 2025-01, 151,024 milesRelated service bulletins
- 10195484Dec 12, 2017Service Solution SS 1033289 BHM Fault Code SPN 524249 / FMI 7
- 10195640Nov 28, 2017SS 1032728 Bulkhead Module Fault Codes 524280 thru 524286 with FMI 7 Clarification
- 10195624Feb 9, 2017Service Solution SS 1032989 â BHM Fault Code Changes
- 10193718Mar 1, 2014Freightliner Action Bulletin FAB156 M2 aux rear heat and AC
- 10193695Dec 1, 2013Freightliner Action Bulletin FAB152 Chassis Module Relocation
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2021 | 3 | 38% |
Other parts of the 2021 Freightliner M2
2 complaintsTransmission and drivetrain
2 complaintsOther or unknown
1 complaintsTires
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2021 Freightliner M2
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology