Bmw E90 Radiator Fan Not Working

Bmw cca tsa 16 bmw m3 o8 bmw x5. Replace the high speed relay. If not and the fan is getting correct voltage and a signal then the fan motor is probably shot.

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Make sure that the fan is not obstructed.

Bmw e90 radiator fan not working.

How to test radiator fan on bmw maxicom scanner. Non functional cooling fans are another common symptom of a potential problem with the cooling fan relay. Check power and ground at the fan connector. If it does this might be the issue as well.

2008 e92 m3 s65 radiator fan removal. The fan should come on at high speed. Disconnecting the negative battery cable will prevent the electric cooling fan from starting while being serviced. If the relay fails it will be unable to supply power to.

Belts and hoses and replacing the factory oem plastic aluminum crimped junk radiator with an all aluminum radiator. It is possible that a wire has worn out due to heat and needs replacement. When replacing your electronic cooling fan you will want to work with the engine cold and disconnect the battery negative cable. The s65 is pretty straight forward to work on just take your time.

I ve consulted the bentley manual and it doesn t indicate recoding is necessary if the fan is replaced. If it does the fan motor is ok. The fan will usually store a fault in the dme for activation or ihka system faulted for excess pressure because fan is not coming on. If so retry the test jumpering from terminal 30 to 87a.

If the fan is not working even when the car is heating up there might be a problem with the wiring. Https amzn to 2dotdpf in this video we will be using maxisys ms908p to test the radiator fan on this bmw. Cooling fans do not function. If the fan does not run on high speed check to see if your application is using a 5 pin relay.

When a bmw e90 cooling fan fails the fan will not activate or only activate at high speed. The fan has a final stage resistor built in so it gets a pwm signal for activation and speed. Discussion in e90 e92 e93 m3 2008 2013 started by 106598 sep 6 2016. You need to inspect all the wiring leading into and out from the radiator fan.

If the fan does not run check for 12 volts at terminal 30 in the relay socket.

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