Transmission - Help !!!

[goodster77]

2000 ML 320 was stuck in limp mode (no codes) auto gear box indicator showing yello box ( no P, N, D etc.. ) (no other faults - selection fine)after lots of research plummed for replacing gear selector. Order part fitted - success !!! took for spin no problems tiptronic also fine.
Got home - back into park.

Issue !

Stuck in park. After multiple attempts now always sticks back in park - need to use manual lever overide.
Was wondering if i could replace the PCB of new with my old as think this is a problem but cant get it off...

Is their something else I'm missing ??? Do I need to reset post gear selector change ?

other things to check ? Wifes car .. spent a day on it now and feeling the heat for the school run tmrw !

 

[xxvodkakingxx]

Have you checked the fluid level? If not then do so as you may have a small leak.

 

[Sp!ke]

Is your brake light working?

 

[goodster77]

reply

Is your brake light working?

Yes Brake light working... haven't connected up all e/w etc.. as wanted to test before putting back together . Also now reverted back to original gear selector with just hte PCB changed. Still all working except wanting to stick in park . Wondering what ive done ??

What is the sprint loaded switch on the front right of the gear selector for ?

 

[goodster77]

spring

 

[goodster77]

reply

Have you checked the fluid level? If not then do so as you may have a small leak.

No issue with level .

thanks

 

[wongl]

Have you put it on Star Diagnostic? What is/are the fault code?

Being stuck in park could be caused by a number of different faults in the car. On my W210 it was initially the gear shift module, but having replaced the module a fault code had to cleared down using the Star Diagnostic computer.

 

[goodster77]

reply

OBD2 diagnostic showing no codes ?

 

[whitenemesis]

Really need STAR to be sure

 

[whealan]

I've had the same problem with my 1999 CLK320 (130000m). Started off by not turning over on the starter unless put into N (and then intermittently), then after two weeks non-use the indicator was all over the place. I trickle charged the battery and it got better but intermittently went to showing R when it was in P and consequently not turning over on the starter although after a run it was fine. The indy wanted to replace the gear selector but I put a new "charged" battery in first in case that was the problem. Still playing up. After a few days I trickle charged the new battery (it took 6 hours) and everything has now been working perfectly for a week.
It seems that a dying battery or even a new one slightly below full charge is enough to cause all this.