THE CIRCUIT WIRING ON THESE VEHICLES IS ARRANGED SO THAT A SHORT CIRCUIT IN THE REAR TAILLIGHTS WILL ALSO RESULT IN LOSS OF POWER TO THE HEADLAMPS. FOR SAFETY REASONS THE LIGHTING SYSTEM WIRING SHOULD BE INDEPENDENT.
Consequence & remedy
Consequence: Not supplied
Remedy: VEHICLES WILL HAVE AN AUTOMATIC RESET CIRCUIT BREAKER INSTALLED TO ENSURE CONTINUED HEADLAMP ILLUMINATION IN THE EVENT OF A SHORT IN OTHER LIGHTING SYSTEMS.
WHEN THE IGNITION KEY IS IN THE "ON" POSITION AND THE HEATER IS OPERATING AT THE "LOW" OR "MEDIUM" SETTING, THE HEATER SWITCH WIRING WILL OVERLOAD IN THE EVENT THE HEATER MOTOR SEIZES.
Consequence & remedy
Consequence: Not supplied
Remedy: A SPEED VARIATION RESISTANCE UNIT AND AN ELECTRIC MOTOR MOISTURE PROTECTION CAP WILL BE INSTALLED WITHOUT CHARGE.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
1979 Mack MS300P Problems, Complaints & Recalls | Skip That Year