2001 E-430 Replacing Broken Rear Window Regulator, Do I need to unplug battery?

I am replacing broken Rear Window Regulator, Do I need to unplug battery? The reason I am asking this question is that I noticed that I have airbag in my 2001 W210 rear doors. I just want to make sure I will not activate air bag while working on Window Regulator.
Please some one can give me feed back.
Just resync all the windows and sunroof and your steering wheel angle sensor when done.

Easy
make sure you have your radio code if you need to re enter it.
You get that from any mb dealer or might be on a card in your radio book.




