[Atroci0us]

Hello ,

I recently changed the transmission pan, mechatronic sleeve, and fluid, but I now have run into a couple problem and wondering if you guys can help me with them.

I have a 2007 BMW 335i Coupe (JB4, DP, DCI, Exhaust), after driving for 10-15 mins after the fluid and pan change a lot of error lights came on (amber brake lights, DSC, amber transmission warning with exclamation mark). With the drive, the transmission seems to be stuck in gear 2 or 3 and would not shift. Sometimes the transmission would slip and sometimes transmission not get into gear and feel like a stall with no power.

The next day, cold start there is no errors at all. Car drives smooth, all gears working and no slip whatsoever. But again after 10-15 mins of driving all the errors came back, and same scenario with the transmission where it is put into transmission limp mode with slips and stalls. I tried several cold start within the next few days and it is the same scenario after 10-15 mins of driving.

I did some search online and checked the voltage with car engine on and off and all seems to be normal. So I don't think its the alternator or the battery.

I read the code with JB4 and my mechanic read the error codes and got the following

CDAD - Wheel Torque Request
CD87 - Powertrain CAN communication error
CD99 - Torque request EGS
CD9D - Gearbox data
CD9E - Gearbox data 2

The mechanic tried to clear all the codes and it would just come back. But this time, I started to see amber ABS light, the ABS light and DSC would go on and off, but the amber brake and amber transmission warning with exclamation mark always remains.

I thought this extremely strange, because on cold start everything is fine. I don't understand why it only happens after 10-15 mins of driving. Any help would be greatly appreciated.

Thank you

[gtaccord]

Low fluid?

[Atroci0us]

Originally Posted by gtaccord

Low fluid?

fluid level is good, I checked it with car engine on and it is coming out

[gtaccord]

Well then the only other thing that changed was the mechatronics sleeve. There is probably a problem with the install. I know it has to go in a particular way and it can be hard to get the connector back on correctly.

Hang on; were you experiencing ANY problems at all before messing with the pan/fluid/etc.? Like, did you change all the stuff for maintenance purposes, or were you trying to fix a "slipping" issue, etc.?

[Atroci0us]

Originally Posted by gtaccord

Well then the only other thing that changed was the mechatronics sleeve. There is probably a problem with the install. I know it has to go in a particular way and it can be hard to get the connector back on correctly.

yea, i will have to recheck that

Originally Posted by FCobra94

Hang on; were you experiencing ANY problems at all before messing with the pan/fluid/etc.? Like, did you change all the stuff for maintenance purposes, or were you trying to fix a "slipping" issue, etc.?

no problems at all, just slight leakage from the pan, but no transmission problems or slipping issues

[roadkillrob]

errors would indicate a communications issue with the trans, so going to go with Mechatronics connection also, either loose or a damaged pin.

Taking 15 minutes may mean that a little heat builds up and things move and change size a little and it is enough for the connector to loose connection (or could just be bumps in the road causing it to loose connection - sounds like it just needs to be a little tighter).

[gabylonfive]

Recheck that the mechatronic connection is clean and seated properly.

[Atroci0us]

i fixed the problem.
it was the seating of the sleeve is not in enough. it seems like there are 2 indentation where it can be locked up.
thanks guys