I replaced the thermostat and the water pump on my 550i m-sport and the message pops up again. I checked if the fan worked and it does. Do I need to replace the fan assembly or is it just a relay if so, where is it located?
In short: proper bleeding procedure!
Do a search on YouTube if you need visuals.
Check for faults in dme we have had issues with the electrical fan intermittent not working
Dme is the engine computer, digital motor electrics
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