Bmw e90 models utilize an electronic cooling fan integrated into the cooling fan shroud.
Bmw e90 radiator fan replacement.
The cap must be removed for the bmw e90 radiator to drain properly.
One of the most common failure points on aging bmw s is the cooling system.
This allows infinite speed regulation unlike hi low speed on older cars and helps increase efficiency and fuel economy.
Fixes bmw e90 models have an advanced radiator fan control which uses a pulse width modulated or pwm signal to regulate the fan speed.
All early models with gasoline engines have a high radiator fan failure rate.
When repairing the cooling fan and shroud are replaced as a unit.
Radiator fan switch replacement location bmw e90 e91 e92 e93 if you need to replace the radiator fan switch on bmw e91 e90 e92 e93 we will explain in this.
Remove the coolant reservoir cap.
The cooling fan is responsible for maintaining proper engine coolant temperature and a c cooling.
When a bmw e90 cooling fan fails the fan will not activate or only activate at high speed.