1999 bmw 316i location of sensors

It's actually a message. It will say "Low coolant level" or "Check coolant level" . Hard to miss. Anyway, the sensor is in and part of the coolant reservoir. If the sensor isn't working, you need to replace the reservoir.

coolant sensor replace it because it could cause more problems with other important sensors andscrew gas milege big time please dont wait get it fixed Coolant sensor u can getit from your parts store its very easy to replace

replace sensor. Its part of the expansion tank.

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You need to add few ounces of coolant to the reservoir. The reservoir is located under the hood. It is a white plastic that has liquid in it. Please see picture below of the coolant reservoir.

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CHECK FOR LOW COOLANT LEVEL.IF COOLANT LEVEL OKAY.SCAN VECHICLE FOR FAULTY COOLING FAN OR RELAY.AND SCAN FOR FAULTY COOLANT TEMPERATURE SENSOR.

Make sure you are checking the coolant level in the radiator as well as in the overflow tank. The sensor is located in the radiator, so if the level in the overflow tank is good, it could still be low in the radiator.

i've had similar issues with a 1999 M3. normally attributed to electrical power levels this could be a low voltage issue.

do you have error codes?

make sure the power contact at the starter motor (between the alternator and the battery) is tightened.

I have also had issues with a cranshaft position sensor. but my favourite culprit of electrical issues is a wet ECU.

the ecu compartment is under the windshield on the passenger side on E36

you gain acess to it under the hood....
this compartment gets wet, the ecu lays on a flat surface in that
compartment.

the bottom side of the circuit board gets wet and starts corrosion.

remove the ecu, take the bottom plate off, clean the bottom of the circuit
board with alcohol and a soft tooth brush.

you should be able to see the signs of corrosion or conductive build up.

this gunk bridges solder points doing all sort s of wierd things to your
car, including false sensor readings from asc/abs controllers and other
sensors....

all the way to engine failure and worst case burnt and shorted wiring
harness.

I'm on my 3rd ecu, took me and the repair boys a few years to figure this
one out.

BTW: i would get that ecu mounted above that flat surface, use some sort
of standoff to raise it so that it is not laying in the wet.

I'ts the low coolant sensor. I'ts located on your radiator. they are know to go out. if your coolant level is not low, just change the sensor. the sensor cost about $50.00.
good luck.

at the engine, there is a small sensor that helps increase or decrease the rpm of the engine. Perhaps yours is soo low, that when you slow down, it's almost about to stop.

The other problem could be the airfilter sensor. If it's not properly fixed or if the sensor itself is a bit damaged, than the engine is not getting enough air and so, let's the engine almost go off.

Please give further details if this has not helped.

thank you

Redmondeo34


A couple of things to check.
This is only if you replaced the front pads, after the warning light came on.
1. Make sure brake fluid is level and at the max mark
2. Did you replace the front pads sensors with the new pads.If not please do.
3. Check that the rear pads and sensors are not worn and do not require replacing.
4. If all above is good, Drive vehicle for about 5klm and switch off and on it will reset itself

regards
I hope this helps.