It’s getting colder outside, so now is the time to make sure your car heater is in good repair.
How the Heater Works
The mechanism that runs the heater in your car is the same system that keeps the engine cool.
Coolant circulates through the engine and absorbs heat. The heater core uses the hot coolant to keep your cabin warm.
Trouble Shooting Your Vehicle’s Heater
If the cabin in your car or truck isn’t getting warm, here are a couple of things you can check:
Check your engine temperature: The thermostat regulates the temperature of the engine. A worn-out thermostat will allow the engine to overheat AND prevent the coolant from getting hot enough to heat the cabin.
Check the coolant flow: Sediment and grime can restrict the flow of coolant in your system. If your thermostat is functioning properly, you may need to flush the system. Note: A routine system flush is recommended every 3 to 5 years by most manufacturers.
Always consult your vehicle owner’s manual prior to making repairs or replacing parts and always ask for ASE Certified mechanics when you hire someone to do the job for you.