Q: Heater valve stuck.

asked by on

The backseat heater vent, in the center console, constantly blows hot air. I think a heater valve is stuck and doesn't turn off when I switch the rear temperature to cold.

The heater control valve is mounter under the hood on this vehicle. The valve should be closed when the temperature is set to cold for the rear a/c system. The recommendation would be to have a qualified mechanic check for the heat flow valve turning on and off with the system. The vent temperature when set to cold should be colder than when set to heat and the temperature control motor may be inoperative. Both of the parts will need to be checked against the flow control diagram of the service manual.

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. Heater valve stuck.

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: Thumps and grinding noises in differential

It is possible that you could have a faulty wheel bearing. Wheel bearings can often cause grinding noises when the lubrication onside them dries up. I would recommend having your vehicle inspected once more for a rear wheel bearing failure....

Q: Bmw 745i Transmission Failsafe

Transmission Failsafe means that the transmission controller has detected a problem with the transmission or any of it's sensors that is preventing it from working properly. In your case it seems to see a problem when you attempt to get...

Q: How to replace interior door handle cable.

Generally, you have to hold the door panel up, pull the handle, and snap the cable in at an angle. Different cars will have different mechanisms, and some may be more difficult than others. If you are still having problems,...

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...