Mechanical Problems
WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
Possible causes of insufficient heat:
- Inoperative A/C heater control or module (depending on ATC or MTC application).
- Inoperative blower motor system.
- Inoperative engine coolant thermostat.
- Inoperative, obstructed or improperly installed blend-air door(s).
- Inoperative or improperly installed blend door actuator or temperature control cable (depending on ATC or MTC application).
- Low engine coolant.
- Obstructed cowl air intake.
- Obstructed heater system outlets.
- Restricted cabin air filter