A set of Mercedes Transponders that you need to deactivate your Mercedes front passenger Airbag when you want to put your child in the front using a non Mercedes child seat. 
Must check your Mercedes model has the AKSE Airbag Recognition system in your model before buying. 
Original part, and can save you mega bucks not needing to buy the Merc car seat afterall as your child grows.
Sold in a Jiffy bag package that you simply place on your front seat, turn on your ignition, your "Airbag Off" will light up, and you are set for your journey .

Sold in full working order using recorded post and used at your own risk.

Will post Internationally.

No returns