Heater Control Valve
Symptoms of Wear or Failure
- Adjusting the temperature may not change the output from the heater
- Valve may leak coolant
Related Repair Advice
- When replacing the heater control valve, the shop should inspect all of the heater hoses and replace them if needed
- If the heater control valve is being replaced due to corrosion, we recommended flushing the coolant to prevent additional problems
- Heater control valves are often replaced because they leak; but if the heater hoses are being replaced, it's economical to replace the valve as well
- Not all vehicle are equipped with a heater control valve. If a valve is not used, coolant continuously flows though the heater core.
