Bmw E90 Radiator Fan Not Working

Replace the high speed relay.

Bmw e90 radiator fan not working.

If it does this might be the issue as well. You need to inspect all the wiring leading into and out from the radiator fan. Bmw cca tsa 16 bmw m3 o8 bmw x5. If the fan does not run check for 12 volts at terminal 30 in the relay socket.

Check power and ground at the fan connector. Non functional cooling fans are another common symptom of a potential problem with the cooling fan relay. The s65 is pretty straight forward to work on just take your time. 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.

Disconnecting the negative battery cable will prevent the electric cooling fan from starting while being serviced. Cooling fans do not function. Discussion in e90 e92 e93 m3 2008 2013 started by 106598 sep 6 2016. If the fan is not working even when the car is heating up there might be a problem with the wiring.

If not and the fan is getting correct voltage and a signal then the fan motor is probably shot. 2008 e92 m3 s65 radiator fan removal. If the fan does not run on high speed check to see if your application is using a 5 pin relay. If it does the fan motor is ok.

The fan has a final stage resistor built in so it gets a pwm signal for activation and speed. If so retry the test jumpering from terminal 30 to 87a. The fan should come on at high speed. Belts and hoses and replacing the factory oem plastic aluminum crimped junk radiator with an all aluminum radiator.

Make sure that the fan is not obstructed. If the relay fails it will be unable to supply power to. When a bmw e90 cooling fan fails the fan will not activate or only activate at high speed. Https amzn to 2dotdpf in this video we will be using maxisys ms908p to test the radiator fan on this bmw.

I ve consulted the bentley manual and it doesn t indicate recoding is necessary if the fan is replaced.