donaldj79

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 

Hi Guys, will try to be as brief as I can. Bought an 04 530i with 177K Miles over the internet sight unseen. When the car arrived, Trans Fault was on the display. Mechanic saw the Trans Pan was cracked at the rear and almost all the fluid was gone. Replaced the Trans Pan along with the sleeve and filled it up with BMW trans fluid. Did the adaptation and the car shifted smoothly. LIKE NEW!!

Next morning, I get in the car, drive it for a few miles and it goes into limp mode (Trans Fault) after going down the road a few miles. Actually at first the Cruise Control Warning light pops up for a few secs, then Trans Fault Appears along with Service Engine Soon Light. I'm able to pull over, reset the codes using my generic scan tool. Restart the car and it drives fine for the rest of the day. This exact same event occurs anytime the car is left off for over and hour or two. Drive for a few mins/miles Cruise Control warning light(yellow) then Trans Fault. Sometimes you can cut the car off for a few mins and restart and the it will drive smoothly without resetting it with the scanner. As long as I don't let the car sit up too long, it drives fine. Just took it from Atlanta to Alabama and back with no problems.

I have an Independent Mechanic with AutoLogic. He's an excellent General Mechanic, but he has only been working with BMW's for 2 years. So I would rate him between a "Freshman and Sophomore" as far as knowledge.

Here are the Codes AutoLogic pulled up, along with the screen shots below.

514A-No Message from the centre console control panel, receiver EGS, transmitter SZM

5142-No Message, receiver EGS, transmitter KOMBI

5144-No Message from the Car Access System, receiver EGS, transmitter CAS

CF07-PT-CAN Communication fault

5146-Message from the driver's seat satellite missing, receiver EGS, transmitter SSFA

299A-CAN fault management EGS

CD99-Message(torgue request EGS, 0xB5)faulty, receiver DDE, transmitter EGS/HIM

CD9D Message(transmission data, 0xBA) faulty, receiver DME, transmitter EGS/SMG

In addition, when we went into the Energy Menu, here is what we got:
Battery 86%

SLEEP MODE PREVENTED
Vehicle Does not Assume Sleep Mode
Instrument Cluster
Frequency 1 Periphery of Control Circuit
Defective Control Unit-Dash
Wake -Up Line


Where do I start? Obviously there is a communication problem with the EGS or the Dash Cluster. Is it the EGS or the wiring that goes into it? I have no idea!! Tried searching the codes, not much out there. Hoping you guys can point me in the right direction. Mechanic can fix it, once I point him towards the problem. Last resort is take it in to BMW and have them diagnose it.