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Hello, have yesterday bought a 1995 BMW 850CI. The computer shows "Trans fail safe prog". The car goes well and shifts OK after my opinion. Can you say what most likely are the problem? Had it to a BMW mechanic today and he deleted all faultalarms and said that I must come back in a couple of days to diagnose again...Thank you for your answer

Submitted: 242 days and 2 hours ago.
Category: BMW
Value: $20
Status: AWAITING CUSTOMER ACTION
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1995 BMW

Answer

Hi XXXXXXXX

If there are no fault codes stored in the transmission ecu the reason for this warning will be due to low battery voltage.If the gearbox ecu sees 9.5 volts or less on starting it will issue this check control message.I would start by charging and checking the condition of both battery fitted to the vehicle.

 

Regards Steve.

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Expert: Steve
Pos. Feedback: 100.0 %
Accepts: 
Answered: 3/24/2009

BMW Technician

city & guilds - Bmw Senior Technician

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