Q: Car heater not working

asked by on

The car heater is not working.

When the engine reaches operating temperature, the thermostat opens, allowing hot coolant to flow through the heater core. The heater core then heats the air that is blown through it by the blower motor. This makes the interior nice and warm. There are many reasons for an inoperative heater, including a failed thermostat, failed heater core, low coolant level, and air in the cooling system. A common issue on vehicles like yours is air getting into the system via leaking radiator hoses. In this case, the leak must be fixed and the cooling system bled. I suggest you have a professional inspect your AC system firsthand, and diagnose and repair your vehicle. YourMechanic is an excellent option since we make house calls.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car heater not working

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Check engine light spontaneously comes on

Hi there, thanks for writing in about your 2003 Geo Tracker. There are numerous potential causes for the problem you are having. It could be anything from a bad spark plug to a failed sensor. The only way to know...

Q: why is my 2013 M37x steering wheel getting akmost too hot to touch? Can it be fixed easily? As well, my steering has become very t

If you have insurance covering the cost of mechanical failure and repairs, you would first have to obtain authorization from your insurance company. We have no way of knowing what State Farm will or will not reimburse you for in...

Q: swapped engine myself and car cranks but wont start

Hi Jesse. I'm not sure how much we can help you here, as there are way too many variables and information we don't have about how you completed this engine swap to really give you any practical advice. The best...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.