What’s the best way to access the TCM on a BMW X5 with th...

Hi. I'm Daniel, I'll be the mechanic assisting you today. I'm sorry to hear about the problems you have with your X5. Let's see if we can figure this out and get you back on the road quickly. The TCM (transmission control module) is part of the mechatronic system that is "inside" the transmission. To access& replace it you would nee to remove the transmission oil sump. There is no need to remove the whole transmission it can be done with the transmission installed in the car. Let me know if this helps and if you have any questions or concerns at this point. Thanks.

Are you saying to remove the oil pan?

Yes exactly. The TCU (transmission control module) is part of the mechatronic system that is "inside" the transmission. To access& replace it you would nee to remove the transmission oil sump (oil pan).

Thanks

You are welcome. Glad to help. Thanks for using JustAnswer.

I have the pan off. What do I remove next

The TCU (transmission control module) is part of the mechatronic system. You need to remove the complete mechatronic. It is one part.

Customer attachment 10/10/2020 7:49:27 PM

Yes, this is the complete mechatronic. It includes the TCM (transmission control computer). It is one part.

Ok. I see different size bolts. Is it same to assume the bigger ones are the mounts and smaller the bolt are for the springI don't want to unbolt the wrong to let'sBolts

What spring are your referring to? You would need to remove the electrical connector and sealing sleeve. Then remove all bolts that hold the mechatronic to the transmission.

Ok

You are welcome.

Customer attachment 10/10/2020 10:32:55 PM

Alright sir. I got the piece outIs it the entire black piece that's the tcm

Yes exactly.