HELP PLEASE 2006 E61 wagon transmission malfuntion message drive moderately

[danw3]

I got this message just the other dayam really frustrated I just purchased this vehicle with what i assumed was minamumal damgage from minor accident I have replaced the damaged fender light hood bumper and mounts along with driver side airbag Im sure some of the sensors will need to be just dont know what ones yet I had some issues with both pos and neg battery cables I have replaced these as well then while coming home got this trans message and the car went into limp home mode i put it on a scanner i got a few codes 4f8a EGS ratio mon. 5f48 DSC interface and a few others a46d,931b,A0A293b2,E71b,A092 and one that had to do with transfer case VGS i think i will have to check on that. Im just hoping that i didnt make a mistake on this purchase i have been wanting this car forever and got really reasonable ?????? please any help is truely appreciated

[Kaane]

IF you have a ratio monitoring code you will need to drop the valvebody and check the sealing sleeve. The part is only $20.

[danw3]

really how hard is that to do Im just a semi above average DIY