Bmw Radiator Fan Not Working

The fan has a final stage resistor built in so it gets a pwm signal for activation and speed.

Bmw radiator fan not working.

Additional problems can include an issue with the temperature switch the fuse or the cooling fan. The fan should have been on 100 during an overheat situation. Https amzn to 2dotdpf in this video we will be using maxisys ms908p to test the radiator fan on this bmw. Go to my website and bmw forum.

If the fan runs at low speed but not on high speed replace the high speed relay. If you notice that the fan motor does not work you will need a replacement. Just one single engine fan responsible for all the cooling down of that engine bay. You should make it your daily habit to check the coolant levels in your radiator.

If both the low and high speeds do not run go to step 3. I d suggest you sort out your aux fan if you can not sure how the setup is on the m54. Sometimes it feels as if the radiator fan is not working even though it is. 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.

The manual has a electric fan only behind the radiator. Get professional help with your vehicle contact us at ultimate bimmer service. Check power and ground at the fan connector. Models with one radiator temp switch with three wires connected to the switch most models 87 89 through late 90s.

No aux fan on the m54. How to test radiator fan on bmw maxicom scanner. Bmw e90 radiator fan fuse location and replacement e91 e92 e93 bmw 325i 328i 330i 335i 316d 318d 320d 325d 330d 335d 316i 318i 320i 323i 325xi 328xi 335xi th. Please try again later.

The auto has an aux fan in the front and a viscous behind the radiator. This is possible when the amount of coolant in your system is low.