NHTSA Recall 21V850000: Alternator/generator/regulator (electrical system)
Daimler Trucks North America, LLC reported this safety recall to NHTSA on , covering an estimated 1,434 vehicles. It affects 2 models including the Thomas Built Buses Saf-T-Liner Efx.
| NHTSA campaign | 21V850000 |
|---|---|
| Manufacturer campaign | FL904 |
| Component | ELECTRICAL SYSTEM › ALTERNATOR/GENERATOR/REGULATOR |
| Report received | November 2, 2021 |
| Owner notification | December 17, 2021 |
| Initiated by | Manufacturer |
Defect
Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2022 Thomas Built EFX and HDX school buses. The nut for the power cable stud on the alternator may not have been tightened properly, which can cause a loose cable connection.
Safety risk
A loose power cable connection may cause electrical arcing, which can increase the risk of a fire.
Remedy
Dealers will inspect the alternator power cable connection and tighten it if necessary, free of charge. Owner notification letters were mailed on December 17, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL904.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Vehicles covered by recall 21V850000
| Make and model | Model years |
|---|---|
| Thomas Built Buses Saf-T-Liner Efx | 2020, 2021, 2022 |
| Thomas Built Buses Saf-T-Liner Hdx | 2020, 2021, 2022 |
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.