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7 Series - E65 / E66 (2002 - 2008)
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Old 03-03-2015, 11:43 PM
Fathi Fathi is offline
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Location: Bahrain
 
Join Date: Mar 2015
Posts: 1
Mein Auto: E65/730i 2004
Transmission Failsafe Mode, only when warm

Gentlemen,

I am driving E65/730i 2004, mileage 144,000 kM
I am facing the following symptom with transmission,

1. When I startup the car in the morning (relatively cold), it runs fine, no error messages, little fluctuation in the rpm while shifting the gears (it is in automatic mode, so not sure which gears, I guess 3 to 4 and/or 4 to 5). Also, there is a sound while shifting like short friction between parts, then goes away.
2. Once I stop my car (and it is warm), then starting it again: immediately I get a hard shock/jerk (mostly in the transmission and it is still in P position), and got the message "Transmission Failsafe, Drive moderately". And the transmission will not accept automatic or manual mode, it will drive on a fixed gear (mostly 2nd) reaching high rpm ~ 4000 at low speed ~50 kM/hr.
3. I took it to the mechanic, he did the diagnostics and got the error message: EGS SV1 SV2 mechanically, he advised me to change the "valve body" which costs more than $2000 and I am not 100% convinced about his advice.
4. If I stopped my car for a couple of hours to cool down, the error message will go away, and never appeared while driving or shifting transmission, S, A or M. It comes only and only after stopping the car and start it again.
5. Looking at the dash memory, I found these codes:
09319 24 000 4144 8B
1A3C1 20 016 453A 7A
8E104 20 000 41AD 7E
0000 0000 0000
9E111 20 000 43B4 79
0000 0000 0000
6. I checked the on dash voltage, and got 13746 mV, engine ON.

Appreciate sharing your experience and comments on this problem.

Last edited by Fathi; Yesterday at 02:13 AM.
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