#VW RED COOLANT LIGHT FULL#
Coolant Light Turns On When Tank Is Full FAQ Why is my coolant level low even after filling? You'll want to take your vehicle to a qualified repair location to diagnose and repair your problem if you can not easily diagnose it yourself. These are some of the possible causes of a coolant light going on when the tank is full. Check the wiring to be sure nothing is loose or corroded. Your problem also be a faulty coolant level module. Also watch below your car for any telltale drips. That may be an indication of a leak that you haven’t seen yet. While you drive, take note if you smell coolant.
#VW RED COOLANT LIGHT CRACKED#
You may not notice the difference at first, thinking that your tank is fullĪ repair to a cracked engine block or head gasket is an expensive repair. When you get a crack in the block or the intake gasket you will leak coolant and oil, usually slowly at first. Your coolant light might be signs of a more major engine problem. If you recently had your thermostat replaced, check to see that it was replaced with the correct temperature range. Your thermostat may be stuck open and causing improper readings. You may have some sensor problems that stem from the thermostat rather than the sensor. Replacing a sensor that is starting to show extreme signs of age and wear can prevent future problems. It is not a bad idea to keep an eye on your sensor’s readings. If your car is older, the sensor has deteriorated with time and may be failing but not entirely failed. More often than not, though, you will need to take voltage and resistance readings from the sensor to see if it is functioning properly. In this case, removal and replacement is necessary.
You will be able to see if it is cracked or badly corroded. Visual diagnoses can sometimes detect a problem with the sensor. Have all of your connections checked to see if this may be the source of your problem. It is likely that the problem may be a loose, corroded, or faulty connection and not a problem with the sensor itself. A bad coolant sensor may cause a decrease in fuel efficiency or it may also cause the vehicle to fail your emissions inspection. Your sensor may fail or it may simply give a bad reading.
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