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Old 11-10-2011, 03:00 PM
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Default E66 Transmission faulty

I'm working on a E66 735Li, the problem is, the transmission warning lights on only when the driving vehicle at high rev. The fault code is "serial line" which is related to the gear selector switch. Anyone has met this before? Your help is appreciated most. :)


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Old 11-12-2011, 10:10 AM
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The fault codes in EGS are:
507A Serial line, position info
5079 Serial line, time out

This vehicle has changed mechatronics unit before due to jerking gear change and the jerking problem has been solved. Everything working good and only transmission warning lights on with these 2 fault codes. Anyone met this problem before?
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Old 10-27-2015, 07:26 AM
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Me car is 745i BMW I have transmission problem sometimes when I put the key show message see the car have to be on to drive in the car on in sometimes he messages see transmission failure in take the key out in put the back everything good so I need help
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