Originally Posted by Burgerilla

Hello GraphiteGhost!
First, Thanx for taking the time to read and respond to my message. This Forum seems to be full of helpful people and for that, my Wife and I are grateful.

During my research, I found MB Part Number 170 800 08 48 and a comment that this part number is the MB equivalent of XF Part Number 5102774AA, the Central Door Locking Vacuum Module. Having faith in the advice of people on this Forum, I ordered one MB part on eBay.

Again, our gratitude to everyone who reached out here to help us - even if this part ends up being the wrong part!
John Caulkins