jwr1988

Guess what!? I just received a note from a vendor in Greece who had the correct Brose part number from a 635CSi (773-53977) and it had a Bosch imprint on it as well. It also had a slightly different Brose graphic- Brose Coburg. Definitely looks like the same box and configuration as my car, though there are superficial differences.

At any rate, I bought it...hope it works.

Absolutely. They were unable to help. I have tried every US source that I could find.

Thank you for your research! The seats in the 88 M6 have several motors for seating positioning, plus modules for memory, switches for positioning, etc- probably Bosch. The master seat control module under the driver’s seat in the US module (and probably in the 635CSi) was this Brose unit. The picture of the label that started this thread is from my actual unit.

 It’s hard to believe no one has decided to repair these- it appears to be a common issue in these older 6 series autos. This was apps the most advanced motorized seat BMW made at the time. It seems that there is some money to be made fixing these….

 W

Follow-up: Brose doesn't interface with private consumers, only retailers, and the UK BMW resource said they had no resources for help. The ECU testing firm is willing to give it a look, but has never repaired one. The BBA reman folks didn't reply.

w

Thank you! I e-mailed Brose and will contact the other resources as well. Oddly enough, in the US several companies rebuild ECUs and some modules....just NOT this one! This has been a real challenge. I have spent several hours trying to remedy this problem. I appreciate your help.

wayne

Thank you Dave. I contacted the BMW Classic office. They don't have the part, but sent a few resources.

Do you have a contact in the UK?

I appreciate your help!! This is beginning to feel like a search for the holy grail....

Thank you. Do I call BMW USA and ask for the Classic Section adviser?

w

Here is a photo of the part

IMG_0931 2.HEIC