The defect
Daimler Trucks North America LLC (Daimler) is recalling certain model year 2009-2015 Thomas Built Saf-T-Liner HDX school buses manufactured February 25, 2008, through February 11, 2014, equipped with Cummins Westport Model ISL G engines. Condensation in the intake manifold may freeze during cold weather conditions and interfere with the proper operation of the intake manifold pressure sensor.
The risk
The sensor malfunction could induce elevated exhaust temperatures or flames from the exhaust pipe, increasing the risk of a vehicle fire or burn injury to a person near the exhaust pipe.
The remedy
Cummins and Cummins Westport will notify owners, and authorized Cummins service facilities will upload a new ECM calibration, free of charge. The recall began on April 12, 2014. Customers may contact Daimler at 1-800-385-4357 or Cummins Inc. at 1-800-343-7357. Daimler's number for this recall is FL-660.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Thomas Built Buses SAF-T-Liner HDX | 2009, 2010, 2011, 2012, 2013, 2014, 2015 |
Components: ENGINE AND ENGINE COOLING:ENGINE
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Thomas Built Buses SAF-T-Liner HDX | 2009 | 1 | 14 |
| Thomas Built Buses SAF-T-Liner HDX | 2010 | 0 | 16 |
| Thomas Built Buses SAF-T-Liner HDX | 2011 | 0 | 23 |
| Thomas Built Buses SAF-T-Liner HDX | 2012 | 0 | 19 |
| Thomas Built Buses SAF-T-Liner HDX | 2013 | 0 | 23 |
| Thomas Built Buses SAF-T-Liner HDX | 2014 | 0 | 30 |
| Thomas Built Buses SAF-T-Liner HDX | 2015 | 0 | 31 |
Other engine and engine cooling recalls in 2014
48 of the 770 recall campaigns reported to NHTSA in 2014 concerned the engine and engine cooling; Daimler Trucks North America filed 32 campaigns in all.
| 14V771000 3 Dec 2014 | Prevost Cars, Inc. |
| 14V762000 1 Dec 2014 | Mercedes-Benz USA, LLC. |
| 14V764000 1 Dec 2014 | Mercedes-Benz USA, LLC - DBA Sprinter |
| 14V664000 22 Oct 2014 | Spartan Motors, Inc. |
| 14V666000 22 Oct 2014 | Elgin Sweeper Company Inc. |
| 14V574000 19 Sept 2014 | Navistar, Inc. |
| 14V562000 12 Sept 2014 | Mitsubishi Motors North America, Inc. |
| 14V551000 10 Sept 2014 | Mack Trucks, Inc. |
NHTSA recalls (public domain) · all recalls of 2014