You ill need to remove the door panel. The insulation panel is adhered using a pliable adhesive that will likely stick back in place. Careful not to get it on your hands it's like tar and makes a mess.

 

Thanks for letting me know. I’ll try it tomorrow. Do you know if it’s going to be an easy access once I remove the door panel and insulation?

 

It's mostly be feel. Actually, the door handle can be removed completely from the outside without KeylessGo, but with it, you need the panel off to properly deal with the wiring.

 

Thanks for the advise. I was able replace the door handle by removing the door panel. It was a very tight space to deal with the wiring. The connector came off its and I couldn't seat it in its place. But I taped it to the door itself to make sure it doesn't get in the way of the window

 

What is the procedure to make the top go down keylessly? I've owned this car (2005 clk55 AMG) about a week and I'm trying to learn about it, the previous owner wasn't very knowledgable?

Edit: I figured it out: just be within a few feet of the door, point the key fob at the car and hold unlock for 3-5 seconds to start going down. Must hold all the way. Same for lock button for windows up and top up. Awesome feature, a pain to get in the car to do it, especially because my trunk partitioner switch is a little wonky. I have the struts on order for like $32 to fix it.

 

I replaced mine long time ago thanks to this thread. I’ve doing this to prolong their life. It works great for me