Coolant sensors
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Coolant sensors
I keep getting a coolant warning msg on the display. Coolant level is good. Temp is also good. I believe it is a faulty sensor. What sensors feed this msg? What is the sensor that goes into the coolant expansion tank?
AudiWorld Super User
Joined: Jan 2003
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From: Fort Lauderdale, Florida
Re: Coolant sensors
Temp: MFTS (multi-function temperature sensor)
Level: sensor is on bottom of coolant reservoir. It has a 3/4" dia round two-prong connector on the coolant reservoir's bottom surface. I've had them fail in the contacts closed position. I cured it by replacing the entire coolant reservoir (which includes the level sensor); I don't know if it's possible to repair just the level sensor.
Maybe yours has failed. Check with an ohmmeter after allowing engine compartment to cool and pulling the harness connector from the level sensor.
Level: sensor is on bottom of coolant reservoir. It has a 3/4" dia round two-prong connector on the coolant reservoir's bottom surface. I've had them fail in the contacts closed position. I cured it by replacing the entire coolant reservoir (which includes the level sensor); I don't know if it's possible to repair just the level sensor.
Maybe yours has failed. Check with an ohmmeter after allowing engine compartment to cool and pulling the harness connector from the level sensor.
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