Ele Box Question - What is this module for?

[JBird]

My CSL has the following module located in the rear side wall, behind the rear carbon trim panel, Any ideas what it is? Looks a bit retrofitty from how it is wired, but the stickers and module OEM. Wondering what the hell it is, and if it is standard on all CSLs.

https://i.imgur.com/eKz3zP6.jpg

https://i.imgur.com/ipoHmSZ.jpg

https://i.imgur.com/655DIST.jpg

[Mark CSL]

Old Tracker unit the black box is the battery backup

[JBird]

Cheers Mark, its quite strange though. One of the numbers reads 028419. When I google this I find ebay adds of a Mercedes phone module which look very similar.

Prob a standard part also supplied to BMW, or has a previous owner fitted a merc hands free kit to my CSL?

The other number on the side is 11177 0803 and 30 60 09 120, but I can't find much on that.

The car is also beeping when it gets raised up and down on a lift. Is that some sort of OEM built in alarm / immobiliser, or does it also sound like something 3rd party?

https://i.imgur.com/TpKvwKG.jpg

[select]

Looks like a retrofit to me. Afaik CSL never got the option for alarm.
Also i advise to remove it immediately, as it ruins the perfect weight distribution :hahaha:

[TimCSL]

Looks like a retrofit to me. Afaik CSL never got the option for alarm.

BMW offered option S302A ‘alarm system’ for the CSL

[select]

I stand corrected, sorry. :bigcry: