Hit the "learn" button on your garage opener motor and follow the procedure in the car as outlined in the owners manual. It will not pick up from the remote - this is what I had to do with the W220 which may or may not be applicable to your SLK. It takes two people to accomplish this.

__________________
BENZ THERE DONE THAThttp://www.peachparts.com/shopforum/...c/progress.gif
15 VW Passat TDI
00 E420
98 E300 DT
97 E420 Donor Car - NEED PARTS? PM ME!
97 S500
97 E300D
86 Holden Jackaroo Turbo D
86 300SDL
(o\|/o)