Mystery! Anyone recognize this key fob?

[cstreit]

It was found in a used Mercedes - does not appear to trigger anything but is "transmitting". Logo on it appears to be Xc or Xe

What is it?

[masraum]

Looks more like a fob for an aftermarket car alarm than a stock car fob, especially with "on" and "off" rather than lock and unlock.

Is that a logo of some sort at the bottom that's been mostly worn away?

[cstreit]

Originally Posted by masraum

Looks more like a fob for an aftermarket car alarm than a stock car fob, especially with "on" and "off" rather than lock and unlock.

Is that a logo of some sort at the bottom that's been mostly worn away?

Thats my thinking as well - alarm system may be long since removed... ...or remote start?

Thats a logo but can't really make it out.

[MBAtarga]

Here's one on Japanese ebay that was in an auction. I couldn't get google translate to give any helpful info.

https://auctions.yahoo.co.jp/jp/auction/r1046609379

[cstreit]

Thanks! After extensive googling and some testing, it appears to be a remote for the exhaust valve.

Kits these days...