Supply: check valveRecall 18V-409 · 2017–2018 Thomas Built Buses Saf-t-liner EFX
Daimler Trucks North America LLC recall 18V-409 covers 109 2017–2018 Thomas Built Buses Saf-t-liner EFX for a supply: check valve problem, reported to NHTSA on June 15, 2018. The manufacturer's latest report (2019 Q4) shows 67% of affected vehicles repaired.
Source: NHTSA recall 18V409000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
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.
The risk
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.
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.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
67%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.
Vehicles in this recall
Built from November 1, 2017 to January 16, 2018. Not every vehicle in these model years is included; check by VIN.