Thomas Built Buses recall: Service brakes, air
What is wrong
Daimler Trucks North America LLC (DTNA) is recalling certain 2017-2018 Thomas Built Buses Saf-T-Liner EFX school buses. The check valve for the air brake system may not be plumbed correctly which can cause the primary air system to not be isolated from the secondary air system.
What could happen
In the event of a rapid loss of air pressure in the secondary system, the incorrectly plumbed check valve can cause rapid air loss in both secondary and primary system, causing the parking brakes to activate suddenly. This will increase the risk of a crash.
The fix
DTNA will notify owners, and dealers will inspect and repair the check valve as needed, free of charge. The recall began on August 12, 2018. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-774.
Vehicles covered
- Thomas Built Buses Saf-T-Liner Efx 2017–2018
Facts
- NHTSA recall number
- 18V409000
- Type
- Vehicle
- Filed by
- Daimler Trucks North America LLC
- Reported to NHTSA
- Jun 15, 2018
- Owners notified
- Aug 12, 2018
- Vehicles or items affected
- 109
- Started by
- The manufacturer
- Built
- Nov 1, 2017 to Jan 16, 2018
- Part
- Service brakes, air › Supply › Check valve
- Maker's own recall number
- FL-774
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.safercar.gov.
Other recalls for the same vehicles
- Thomas Built Buses recall: Engine and engine cooling Feb 13, 2026
- Thomas Built Buses recall: Engine and engine cooling Feb 13, 2026
- Thomas Built Buses recall: Equipment adaptive/mobility Dec 9, 2025
- Thomas Built Buses recall: Steering Sep 11, 2025
- Thomas Built Buses recall: Equipment Jul 24, 2024
- Thomas Built Buses recall: Steering Jun 4, 2024
To check one car, enter its 17-character VIN on the official NHTSA page: a recall may cover only some vehicles of a model year.
Recall data: National Highway Traffic Safety Administration (NHTSA). Nebula is not affiliated with or endorsed by NHTSA.