2019–2020 Thomas Built Buses Saf-T-Liner C2, 2019–2020 Thomas Built Buses Saf-T-Liner Efx, 2019–2020 Thomas Built Buses Saf-T-Liner HDX Recall: Brake caliper mounting bolts may have been insufficiently tightened
NHTSA campaign 20V126000 · Service Brakes, Air · filed Mar 3, 2020 · verified Jul 30, 2026
The defect
Daimler Trucks North America LLC (DTNA) is recalling certain 2019-2020 Thomas Built Saf-T-Liner HDX, EFX, and C2 school buses equipped with air disc brakes. The brake caliper mounting bolts may have been insufficiently tightened.
The risk
Loose brake caliper mounting bolts can reduce brake effectiveness, increasing the risk of a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
DTNA will notify owners, and dealers will inspect and repair the vehicles, free of charge. The recall began May 2, 2020. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-845.
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.safercar.gov.
Affected vehicles
Related recalls
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- 2025–2026 Thomas Built Buses Saf-T-Liner C2 and 1 other model — Brake caliper mounting bolts may loosen and detach, which…
Other campaigns involving Thomas Built Buses vehicles
- 2026–2027 Thomas Built Buses Saf-T-Liner EFX2 and 1 other model — Entrance door may fail to open or close when the switch is…
- 2026–2027 Thomas Built Buses Saf-T-Liner HDX2 — Entrance door may fail to open or close when the switch is…
- 2027 Thomas Built Buses Saf-T-Liner HDX2 — Front and mid-body interior joints may have been…
All Thomas Built Buses Saf-T-Liner C2 recalls → · All Thomas Built Buses recalls →
Source: NHTSA recall database, campaign 20V126000 (manufacturer number FL-845). Data last verified Jul 30, 2026.