Toyota Trailer Harness Converter: problems, complaints, bulletins
Summary for the Toyota Trailer Harness Converter across 1 model years: 4 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
| Year | Owner complaints | involving a crash | Technical service bulletins (TSB) | YouTube repair videos |
|---|---|---|---|---|
| 9999 | 4 | 0 | 0 | 0 |
What fails most often
- Equipment: 4 complaints (100% of all).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Equipment | 4 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The sliding doors on our toyota sienna are defective. They stick shut freeze if the temperature gets low enough or there is enough moisture. It's hard to predict the circumstance but the fact is, our kids cannot get in or out of the van and we have had to drive it anyway, three different beepers going off all the way.
2005 toyota corolla did not pass emissions inspection. Car taken to lia toyota, northampton, ma. Dealer said car computer needed to be replaced but had to order part from toyota. So far it's been two weeks and the part may be delivered in another two weeks per toyota.
1.) there is a serious "clunk" noise when braking and also the same noise when starting from a complete stop when you take foot off brake. 2.) there is "sulfur smell " in cabin from catalytic converter.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Other models of this make
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 2026-11-05.