![]() ![]() If it still comes on randomly then its likely the sensor that is bad and it needs to be replaced. Apply the dielectric grease to the contacts and plug it back in. you can get it for a couple of bucks at any autoparts store. If its not, clean it up with a small file and apply some dielectric grease. According to my expansion tank float the coolant level was perfectly consistent and always at the max mark. I was getting a very strange problem with the coolant level light intermittently coming on and off in winter temperatures after the engine had fully warmed up with the cabin heating running. You can unplug the connector, visually inspect it and make sure its clean copper on the contacts. DIY intermittent coolant level light fix E46. If it is, then it may still be a contact issue. Find the wire that connects to it and make sure the plug is well inserted and connected. If the fluid level does not drop but the light comes on then its the sensor. That is probably the water pump on its way to failing. If it drops below the center line of the tank after you fill it to that level then you have a leak. The coolant light can come on if the coolant is low, like if the water pump is intermittently leaking in anticipation of a total failure, or it can come on if the sensor is failing, or if the connector is failing. The most recent cooling system work was a new water pump about 3 months/4k miles ago. Usually goes out after a minute or two of idling, then comes on again at speed. What do you think the issue may be? It doesn't seem to be leaking any coolant and it could be the air bubble issue but my engine is not getting very hot and I had never opened the cap before it came on the first time. Coolant light comes on once car is warmed up and at speed. The coolant light comes on around 197-205 and the longest it's stayed on is a few minutes. Coolant is considered to be an intermediate that transfers the heat from the engine body to the cooling tank. I see it get up to 210 max if its been running for awhile. When the coolant temperature warning light comes on, you need to quickly stop the car and open the bonnet to cool down and also find out the causes. The engine does not seem to be running much hotter, it used to never get above 199 but that was in the spring. I topped it off again and it didn't accomplish anything. That didn't solve anything and it has been coming on more and more frequently and for longer even though the coolant is at a completely fine level. A few days later it happened again, and then driving back from lunch it came on for an extended period of time so I put some coolant in there even though it wasn't very low (I didn't check, I just put some in as I have never filled coolant before). Hello, a few weeks ago I stopped at a stoplight and the coolant light came on, as soon as I pulled away it turned off.
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