PopeyeR Posted August 27 Share Posted August 27 The BMW 318i, specifically the E46 model, is experiencing overheating issues and the radiator fan is not functioning. I replaced the lower radiator hose coolant temperature sensor, but, the vehicle is still experiencing overheating issues and the radiator cooling fan remains inactive. What is the potential issue in this situation? Link to comment Share on other sites More sharing options...
Seconsu Posted August 27 Share Posted August 27 Malfunctioning thermostat? Link to comment Share on other sites More sharing options...
MagicPod Posted August 27 Share Posted August 27 Inspect the wiring of the fan controller at the controller side to see whether there is any corrosion present. Link to comment Share on other sites More sharing options...
PopeyeR Posted August 27 Author Share Posted August 27 Thank you, I will verify. Link to comment Share on other sites More sharing options...
Dudeta Posted August 27 Share Posted August 27 What is the car's manufacturing year? Which one is preferable: M43, N46, or N42? The E46 fan exemplifies the tendency of German engineering to unnecessarily complicate things. The fan is equipped with a fan control unit, as well as a control relay and a delicate control wire that connects to the ECU. This wire is prone to breaking and is located along the NS engine bay. Link to comment Share on other sites More sharing options...
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Insignia GS Line Forum
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