Remove the coolant reservoir cap.
Bmw e90 radiator fan.
Diy bmw radiator fan stuck on high.
Bmw e90 models utilize an electronic cooling fan integrated into the cooling fan shroud.
Remove protective plastic belly pan skid plate from the underside of your vehicle.
The cooling fan is responsible for maintaining proper engine coolant temperature and a c cooling.
Https amzn to 2dotdpf in this video we will be using maxisys ms908p to test the radiator fan on this bmw.
In this article i ll go over the steps involved with replacing the radiator on bmw e90 models.
Radiators for bmw 3 series e90 e91 e92 e93 2006 2013.
The cap must be removed for the bmw e90 radiator to drain properly.
Electric water pump diagnosis buy your parts here.
The water pump circulates the coolant and keeps the system pressurized.
You will have to remove the electric cooling fan to replace the radiator.
Http go magik ly ml 7uko here i will explain the diag proces.
The bmw e90 cooling fan s main function is to move air through the radiator when the vehicle is stationary or moving at slow speeds.
Inspect both radiator hoses and replace if necessary check for dry rot or splitting and examine to see that the sealing o rings are in good shape.
When a bmw e90 cooling fan fails the fan will not activate or only activate at high speed.
Remove the electric engine cooling fan.
On a bmw this is a mix of monoethylene glycol and distilled water.
For instructions on how to do this please read our article bmw e90 cooling fan replacement 2007 2013 3 series.
How to test radiator fan on bmw maxicom scanner.
These cooling fans are troublesome and i would suggest replacing it while you have it out.
When repairing the cooling fan and shroud are replaced as a unit.