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Bought a 2010 750Li with 131k miles knowing it has a bad transmission. First car wouldn't even go into gear. No fluid. I had mechanic change all the "mechatronics sleeves and refill with fresh fluid. Car now drives but it kicks you in the butt(on acceleration and deceleration) after a few shifts and goes into limp mode. My question is do I need a transmission or can I get away with just the valve body being rebuilt? I found a transmission I can pick up, but I have to make a decision while it's still available. Posting the Codes below. Bite the bullet on a Used Trans or go the cheaper route and re-do the valve body? Your input and suggestions are appreciated.
CF1701 Message (All) For (EGS_EL,A-CAN, FA-CAN) From (GWS, A-CAN, FA-CAN) is missing
1DB301 EGS, Signal Monitoring (Gear Information) Invalid Signal Content
CF0400 Total malfunction of the CAN-Communication by line interruption
400441 Ratio Monitoring Clutch E implausible
400331 Clutch Monitoring 3-4 implausible
401011 Collision backup measures with Equal Priority
213901 Consumer Readuction: Active
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I'm no expert, but I've dealt with a few transmission issues on BMWs. The loss of communication CF0400 concerns me. That's not caused by the valve body. I suspect you have a bad connector, wiring harness, or module.
If this is the case, a new trans will not fix the issue.
What are you using to pull the codes?
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