Trans fail safe X5 E53 2005 330d

[wpoll]

Originally Posted by runteldat

I got a Trans Fail Safe while car was idling in park. Turned ignition off, car would not start. Started acting as battery was dead. Let sit for an hour, car started and drove fine for 3wks. Started car and Trans fail Safe came on again, then put car in gear and pulled off and car was sluggish. Parked car for that day and came back with lights on and would not turn over. Then battery died. Had battery tested and tested good. Recharged battery and install, Trans fail safe again. IDK what to try. Also, 4X4 light is on.

What voltage do you get on BC menu when the car is running? Sounds like you may have a faulty (intermittent) alternator.