get removal tools for your Mercedes Audio 10 CD 

Installation Pics and Instructions for Mercedes w203 Becker Audio 10 CD
Model No. BE6021 / BE4410

For the install you'll need a thin flat-blade screwdriver, a long T20 torx screwdriver, a pen light. You'll first need to undo the silver tabs on the bottom of the silver console trim. To do this, open up the ash tray cover about halfway and shine the pen light into the gap. You will see on the far left and right sides two silver clasps holding the trim in place. Take the thin screwdriver and pry these clasps down; they are hinged in the front so pry them from further back. (I don't have photos since the gap is too small)