2008 Mack Chu, 2007 Mack CXN, 2007 Mack CXP Recall: ON CERTAIN TRUCKS, AN UNPROTECTED LEAD IN THE THERMOSWITCH OF THE HEATER…
NHTSA campaign 07V346000 · Fuel System, Diesel · filed Aug 7, 2007 · verified Jul 30, 2026
The defect
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.
The risk
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.
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
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.
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.
Affected vehicles
Related recalls
More Mack Chu recalls
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- 2014–2015 Mack Chu and 1 other model — Due to a software error, the affected vehicles may not…
- 2010–2014 Mack Chu and 10 other models — Hazard warning lights may fail
- 2007–2015 Mack Chu and 6 other models — Mack Trucks, Inc
Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 07V346000 (manufacturer number SC0325). Data last verified Jul 30, 2026.