Diagnosis By Symptom

Insufficient Heating Or Defrosting:

Insufficient Heating Or Defrosting Procedure (2 Of 2):

INSUFFICIENT HEATING OR DEFROSTING
The most likely causes of insufficient heating outside the heater system include a low coolant level. a faulty thermostat, a partially or fully clogged heater core or hose, an obstruction to air circulation or an air leak past a faulty seal into the passenger compartment For an organized diagnosis procedure, refer to the accompanying figures.