Check for a burnt fuse. There are 4 fuses that supply power to the cooling system electrical components--look in the Bentley wiring diagram for your BDF 24V engine. Mine failed the 40 amp metal strip fuse on the top of the battery and also the 30 amp standard fuse also located on top of the battery. Also, the radiator thermoswitch can fail open which will stop the fans from running on the low speed setting. There is simple test procedure in Bentley to help identify the failed cooling fan system components.




