Your transmission is going into limp mode because of a fault. Get the tranny diagnosed.
SOURCE: I have a BMW 728i 1997 automatic, and recently
my rear passenger door will not open with central locking bmw 728i
SOURCE: 1996 BMW 750IL Engine failsafe prog. no throttle
When that happened to me it was a blown fuse
SOURCE: bmw 2000 7 series trans. failsafe prog.
pretty quick. but be sure it the alternator. You can test it by starting the car then unplugging the battery. If it cuts off when you unplug it it's the alternator if it keeps running it's not the problem
SOURCE: i also have a trans.failsafe prog.indicator light on my 2000 bmw
You have an alternator or battery concerne,low voltage caused all the other problems,Start with a battery,then have alternator tested.The failsafes are designed to keep from burning up solenoids and other electronic components.
SOURCE: Message shows Trans Failsafe Prog
OK, the sad news is that you are quite likely to be due for a transmission overhaul. But switch the car off on level ground and let it sit for a few minutes and it should come good for a while. Possibly even weeks. The trigger for the warning and fail safe is related to the build up of particulate matter in the sump of the tranmission so I'm told. You might prolong the period until the transmission needs a rebuild by dropping the pan and cleaning it out,then refitting and filling with a top quality transmission oil. Its only a short term fix though. The good news is that the transmission is quite a conventional unit and unless you are still under warranty you can get quotes from mainstream auto transmission specialists and you may only pay around $3500 AuD with a 12/20 warranty.
Good luck. David
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