![]() ![]() Use on BMW coolant and distilled water to refill/top off the system. A BMW coolant indicator that blinks on and off is almost always caused by one of several issues. Checking the coolant level is similar on most Mercedes Benz vehicles, although some differences may be possible. Green light is perfectly normal when the car is warming up. Let us know if you have any other questions about your Mirage. Perform on a cold car, you will loose only a slight bit of coolant due to cooling system vacuum. Green means the engine is still warming up, and it will show green until the coolant temperature reaches about 137. O-ring is no listed in the parts catalog, it is BMW Part #13621743299, about $2 and it does not require any tools to do the job, just your fingers to unlatch the connector and release the fan switch with the 2 plastic tabs. If the fan switch is wet at all and/or there is a wet mark below the lower radiator hose on the under cover, then your fan switch O-ring is leaking. Low coolant affects the internal engine temperature which is protected by antifreezetriggering the CEL to come on to alert you of engine overheating. The sign goes off if there’s nothing wrong while reaching the normal operating temperature. Yes, low coolant levels in your car radiator can trigger the check engine light to come on. There is an O-ring on the neck of the fan switch that shrinks and causes a slow leak. A blue coolant light comes on when the car starts, and the antifreeze will warm up as it operates. ![]() ![]() You will see something in the lower radiator hose with a small wiring connector, this is the fan switch. Look straight down on the passenger side of the radiators at the lower radiator hose. You need to check your coolant when cold and make sure you use the float properly and do not overfill the expansion tank with coolant or you WILL be replacing the expansion tank in the new few days! Many times you need to pick the float up and drop it back down to make sure the float is not stuck so you can properly gauge the coolant level.Īlso while you are under the hood, check for this very common slow leak a the fan switch in the lower radiator hose. The first thing you need to do is understand these cars have an expansion tank and there is a float level indicator inside this expansion tank. I have seen this problem often on E46 where the coolant light does not come on until the outside temps dip close to or slightly below freezing, but then do not come on if the temps stay above freezing. Note that the coolant will expand and contract quite a bit do to temperature. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |