2012 Freightliner Cascadia, 2012 Freightliner Coronado Recall: Maintenance access panel door on the bottom of the APU may dislodge and…
NHTSA campaign 12V601000 · Equipment · filed Dec 21, 2012 · verified Jul 30, 2026
The defect
Daimler Trucks North America (DTNA) is recalling certain model year 2012 Cascadia and Coronado tractor trailers manufactured from August 1, 2011, through December 30, 2011, equipped with Thermo King TriPac Auxiliary Power Units (APU), serial numbers 3000106335 to 3000127584, manufactured from July 29, 2011, through November 7, 2011. The maintenance access panel door on the bottom of the APU may dislodge and separate.
The risk
If the door separates from the APU while the vehicle is being driven, it may create a road hazard for other drivers.
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 Thermo King dealers will inspect the APUs and replace any of the affected panel doors free of charge. The recall began February 25, 2013. Owners may contact DTNA at 1-800-547-0712.
DTNA's recall campaign number is FL-637.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
| Make | Model | Model years |
|---|---|---|
| Freightliner | Cascadia | 2012 |
| Freightliner | Coronado | 2012 |
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Source: NHTSA recall database, campaign 12V601000 (manufacturer number FL-637). Data last verified Jul 30, 2026.