Nobimmer 694 Report post Posted September 21, 2006 What does the coolant light mean when it's on in the service lights?Obviuosly something to do with the coolant,but I checked and theres plenty of anti freeze in there.What else should I look for? Chur Quote Share this post Link to post Share on other sites
gmccormack 0 Report post Posted September 21, 2006 (edited) It means the water level is to low, but if you're sure there is plenty of water then the problem is more likely to be a fault in the water level sensing system. A faulty connector and or broken wire can cause it, as can corrosion of the magnet in the float or the float my be missing all together or it may have fallen off the sensor. Some cars also have a warning light to tell you it's time to flush the cooling system and replace the antifreeze, as it only has a limited life. Edited September 21, 2006 by gmccormack Quote Share this post Link to post Share on other sites
Guest Ken Report post Posted September 21, 2006 The tube that contains the sensor is sealed with an o-ring which, if dried and/or split can let coolant fluid down into the sensor contacts. This happened on my '84 323i so I took the whole tube assembly apart, cleaned up the resoldered the reed-switch contacts, replaced the seal and hey presto everything worked again. HTH K. Quote Share this post Link to post Share on other sites
Nobimmer 694 Report post Posted September 21, 2006 Hmm yeh I think it may be something wrong with the wiring,it only sometimes comes on and when you hit a judder-bar or start the car on a hill it seems to come on.Sure the anti freeze would be fine cos just had it serviced and it was flushed etc. Gonna go hard on the wiring this Saturday and give the multimeter a good go lol Cheers for the help Quote Share this post Link to post Share on other sites
