Q: Hot air blows even though the heater is not on. I have a 2007 Jeep Commander

asked by on

Hot air blows even though the heater is not on.

My car has 178000 miles.
My car has an automatic transmission.

Your car has a heater control valve to control the flow of coolant through the heater core. It is controlled via engine vacuum so that in the case of a failure, it will default to the heat (open) position. Your problem might be a simple as a vacuum hose that is broken or disconnected. Look under the hood for any small hoses that might be broken or in bad condition. If you don’t find anything that way, contact YourMechanic to have a technician come to your home or office, they can check out and replace your heater control valve for you right there on the spot.

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. Hot air blows even though the heater is not on. I have a 2007 Jeep Commander

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: Heater only works on high. Heat is not hot.

If your heater only blows when the setting is on high, this may suggest that you have a faulty blower motor resistor. The highest speed setting may still work because in most cars in the highest fan speed settings the...

Q: VW Passat won't start

Hi There, This could be related to many different possibilities, but is most likely a bad connection between the battery and the starter relay. The starter relay directs power from the battery to the starter solenoid which then engages the...

Q: Jeep won't start due to alarm

The WCM (Wireless Control Module) or antitheft system has issues that it is affected by static discharge when you enter the key and it locks you out. The WCM/SKREEM (Sentry Key Remote Entry Module) will need to be replaced with...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.