Two Questions please help?
 

1. How to engage "Interior Safeguard" on a C220 2004 classic, i have tried yesterday locked the door left driver's window open to simulate some movement inside the vehicle and only the front and mirror indicators turned on, no beep or any sound.
The dealer selling the vehicle had no clue how it works and didnt even know that the vehicle had a motion sensor inside.
So how to engage and why there is no sound can someone tell me how should i proceed to troubleshoot it.

2. Bi-xenon on the same vehicle should have glassy front covers or it is just plain plastic, cause this one has plastic!

Boy am i lucky to have found this forum and ask question, since i guess am going crazy about these c220.


Thanks guys

1. i have ever heard of inside motion sensor so I will be less than no help there.

2. they are plastic

The "882 - INTERIOR SAFEGUARD" or the motion sensor is this (i have attached the photo). from what i read on internet it is suppose to act upon any movement inside the vehicle (in case of breaking entry of any kind)

Thanks for the 2 question by the way because when i saw that plastic i thought they might be fake or something