Advice, comments very welcome! Thank you. I check fluids often and I still have the temp gauge so I’m not too worried, but I hate to kludge things. Had similar problem twice and both times it was due to the coolant level being low. Yes, the sensor is located at the bottom of the tank, and all you need to do is twist, pull down and unplug the old one. Hopefully someone can shed some light, else I will just make the jumper wire permanent and avoid this headache. As long as you fill it up when cold to the 'Cold full line' there shouldnt be any coolant getting pushed out when the vehicle warms up. How on earth did the system get so jacked from just a simple tank and sensor replacement and why can’t I clear this message via some standard procedure? central locking completely failed, car will not unlock from either key, driver door or interior central locking switch. rear near side passenger window wide open. If you are having trouble resetting the warning lights, or if they keep coming back on, it is essential to take your vehicle to a qualified BMW service center for further diagnosis and repairs. On closer inspection i found the following :. I have the opposite – when a magnet is near, the switch closes and the system is happy – message goes away. Once that is done, you can turn off the lights by pressing and holding the button on the instrument panel for about 5 seconds. That is the reason for the coolant light illuminating. In other words, normally as the float dropped due to a coolant loss, the magnet would come down to the vicinity of the sensor the switch would close and the message would appear. (Edited) I think the only reason for the coolant light to go on is when your low on coolant and NO other reason.Inserted jumper wire into harness socket: message went away.īased on this, somehow my system seems to be in a mode where it is operating backward. I had the same issue off and on even before the new parts and yes its always a. The fan broke and took out the radiator about 8 months ago so I replaced everything. New radiator, expansion tank, all hoses, thermostat, water level sensor, fan, shroud. Removed sensor from harness: message remained.Ĥ. I keep getting low coolant warning light every few days. Condition #1 above, then put a magnet on the sensor: message went away.ģ. The warning light never reappeared and the cars temperature remained normal for the trip home to PA. Added a quart of spring H20 to the reservoir (no distilled available) to top off. Pulled the sensor out of the well but still attached to the harness: message remained.Ģ. This AM, before heading home, the warning light for low coolant came on - never did this before. Update – here’s the troubleshooting steps I did:ġ.
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