Vehicle recall 07V346000 · August 7, 2007
Mack CHU, CXN and 1 more model
On certain trucks, an unprotected lead in the thermoswitch of the heater may make contact with another post possibly creating a short circuit, which can result in continuous…
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- On certain trucks, an unprotected lead in the thermoswitch of the heater may make contact with another post possibly creating a short circuit, which can result in continuous operation of the heating element.
- Consequence
- If the condition exists and the key is left on without fuel in the filter, the heating element may heat to a point where a flame becomes present at the tip of the element which could result in a vehicle fire.
- Remedy
- Dealers will inspect the thermoswitch and will replace it if necessary. The recall began on September 10, 2007. Owners may contact mack trucks at 1-800-528-6586.
- Notes
- Mack recall no. SC0325.CUSTOMERS may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to http://www.safercar.gov.
Recall details
- NHTSA campaign
- 07V346000
- Reported to NHTSA
- August 7, 2007
- Filed by
- MACK TRUCKS, INC
- Manufacturer campaign
- SC0325
- Owner notification
- September 10, 2007
- Vehicles potentially affected
- 121
- Initiated by
- the manufacturer
- Components
- Fuel system, diesel
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
Has your Mack been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.