Q: Heating doesn't work and the face plate unresponsive

asked by on

My car does not heat, which is a big issue when the weather is cold. Nothing works and there is no heat from the AC. The face plate, which controls the heat outlet, doesn't function at all. It is unresponsive. I replaced the body control module as well as the heater box but it hasn't helped. I haven't found any wires that are worn or loose. Do you have any suggestions how I can fix this?

When you say the heater box, I assume you mean the heater core. If nothing happens on any temperature setting, the blower motor, blower motor resistor (which also houses the relay) or HVAC control unit may be faulty. The problem could also be in the blower motor control circuit wiring.

When you turn on your heat, AC, or vent, power flows through a fuse to the HVAC control unit, to the blower motor resistor and finally to the blower. If only the heater does not work, suspect cooling system issues such as faulty thermostat or air in the coolant. A failed blend door could also be obstructing heat flow.

A trained professional, such as one from YourMechanic, will be able to diagnose the heating issue in your vehicle firsthand.

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. Heating doesn't work and the face plate unresponsive

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: Broken intake gasket

Intake gasket replacement is an involved job, but it's not such a huge task that it's worth junking the car over. It calls for 4.6 hours of labor. If the car is otherwise in good shape, I would suggest having...

Q: Shaking in the front end also rattling in the front end

Hello. I will help you with your concern about possible damage to the front end of your car caused by hitting a pothole. If symptoms developed, such as shaking and rattling, after hitting the pothole then yes it is likely...

Q: When driving all the time I hear a fluttering sound. Seems to be coming from my right front area and gets worst the faster I drive.

The noise that your are hearing could be the lug nuts being loose or the wheel bearing hub assembly could be failing. Check the lug nuts and tighten them if they are loose. If the lug nuts are tight, then...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...
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...