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.