Q: Heater not heating

asked by on

The heater is not heating up. I think the radiator needs to be replaced.

The heater needs for the engine to be warm, and the temperature blend door to open, in order to direct heat to the passenger compartment from the AC side. If the radiator was plugged, then the engine may be overheating. The thermostat may be stuck open, preventing the engine from getting warm enough. I recommend that you have a mechanic, such as one from YourMechanic, do a thorough check of the cooling system and AC heat system.

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 not heating

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: How do you use the block heater?

If your car is equipped with a block heater (only those specifically destined for cold climates are so equipped), you have an important tool for ensuring that your car starts when the mercury plummets. The block heater keeps engine coolant...

Q: Noise when braking at low speed

Hello. I am not sure of your description of the sound, but I think you are describing a brake rotor runout causing the brake pads to gyrate and make a noise at low speeds and light braking it is most...

Q: Engine light is on+ VSC Trac lights

The "VSC Trac light on" problem is related to a software problem with the yaw rate sensors calibration. This is documented in Toyota Technical Service Bulletin TSB #BR005-03, which your Toyota service center can apply to re-calibrate this sensor. [Note:...

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...
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...
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.