alarm sensor mid roof

[jon31]

hi i have just bought my first mercedes c200k in black.
very nice love the car but have a slight problem.
in the middle of the roof lining there is a sensor missing.
that i think is the alarm sensor.
i have looked for the part number but cannot find it anywhere.
can anyone help me with the part number and is this the alarm sensor as i think it is.

Thanks

 

[BlackC55]

Why do you need the part number?

Just go into your local MB dealer and quote them the chassis number and they will order you one.