Filed May 3, 2024
The DEF header failed on this truck and it causes the vehicle to be disabled. The DEF header is an emissions part. PART NUMBER 04-31354-004 HEADER-SSI,CONC,6 BOLT,CMNS
- NHTSA ID
- 11586756
- Incident
- May 22, 2023
2021 Freightliner Business Class M2 Owner Complaints
Reports submitted to NHTSA by owners and drivers, shown in full
Data refreshed
Complaints on fileComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
2
Latest May 3, 2024
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
0
Filed in the last 12 monthsReports filed with NHTSA in the trailing 365 days. Recent volume reflects attention and vehicle age as much as anything else.
0
Reports on file since Jun 13, 2023
What this page shows
Our database holds 2 NHTSA owner-reported complaints for the 2021 Freightliner Business Class M2. Each one is a report filed by an owner or driver and published by NHTSA without most of them being verified. A complaint is not a confirmed defect, not a recall and not a manufacturer bulletin. Narratives are shown exactly as filed.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Complaints, most recent first
Showing 1–2 of 2
Powertrain (other)
Filed Jun 13, 2023
Meritor T-Case coating has failed internally. Coating has come off and is clogging the oil pump pick up tube. This can lead to catastrophic failure of the transfer case components.
- NHTSA ID
- 11526800
- Incident
- Jun 13, 2023
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints, published verbatim
Data on this page last refreshed .