AI Damage2021 Freightliner Business Class M2: common problems
The maker issued 200 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 200
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine and cooling | 0 | 0 | 45 |
| Equipment | 0 | 0 | 45 |
| Electrical system | 0 | 0 | 38 |
| Engine | 0 | 0 | 30 |
| Powertrain | 0 | 0 | 21 |
| Service brakes | 0 | 0 | 12 |
| Steering | 0 | 0 | 11 |
| Structure | 0 | 0 | 10 |
| Suspension | 0 | 0 | 10 |
| Exterior lighting | 0 | 0 | 5 |
| Fuel/propulsion system | 0 | 0 | 5 |
| Fuel system | 0 | 0 | 3 |
| Visibility | 0 | 0 | 3 |
| Seats | 0 | 0 | 2 |
Comparison
What to check before buying
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Technical Service Bulletin for Grote OEM and Alliance Aftermarket Headlamp Replacement
- Service Solution for A22-82459-000 Wiper Motor Wiring Connector Pinned Wrong (305)
- Service Solution for Legacy M2 Bulkhead Module (BHM) Replacement and DiagnosticLink Issues
- Fleet Communications for solenoid issues
- CX Advocate for 1810/02 ABS longitudinal acceleration fault (TSB-54-104-WST,TSB-54-379-FTL)
- Fleet Communications for TSB-54-379-FTL & TSB-54-104-WST ESC warning lamp and ECU replacement
- My Communications for update on UFU R61709 Fuel Filters
- Revised Technical Service Bulletin for ESC Warning Lamp and ECU Replacement
- CX Advocate for Aftermarket Transmission Support
- Technical Service Bulletin for ESC Warning Lamp and ECU Replacement
- Fleet Communications for NFD Lower Oil Plug Location - SP Axles
- Fleet Communications for Heater Core Plugging
NHTSA lists 200 bulletins for this year; the 12 newest are shown here.
Other years of this model
- Business Class M2 2016307 sources
- Business Class M2 2017306 sources
- Business Class M2 2018172 sources
- Business Class M2 2019181 sources
- Business Class M2 2020202 sources
- Business Class M2 2022151 sources
- Business Class M2 2023165 sources
- Business Class M2 2024215 sources
- Business Class M2 2025195 sources
- Business Class M2 2026104 sources
- Business Class M2 202722 sources
Questions and answers
What are the most common problems with the 2021 Freightliner Business Class M2?
There are no owner complaints in the NHTSA data for this year; the data comes from 200 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2021 Freightliner Business Class M2?
NHTSA lists 200 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2021 Freightliner Business Class M2 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2021 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.