So after wanting to remove my own mirrors and spending some time looking around on the forum and all over the internet for a DIY on removing the R230 SL side mirrors with no luck I decided to take this on myself, and write up a nice DIY for you guys in case you want to remove these in the future.
The purpose of my removal is to get the mirrors redone in Carbon Fiber in case someone is wondering why I'm doing this.
STEP ONE: (Removing the door panel)
First make sure that the windows on the car are down this will make things easier down the line.
Second make sure that you remove the triangle shaped piece from the inside of the car on the other side of the mirror located all the way in the corner of the door. (this simply snaps back and you have to pull up to get it out *very easy*)
Third you will need to remove the bolt behind the SRS plastic cover on panel. You do this by turning it counter clock wise with your hand and pull it out when it stops turning. Once that is done there is a bolt that is inside and you will have to get out. Don't worry if the bolt falls down, the panel is coming off anyway so you will find it when you pull it off.
Fourth you will need to take all the bolts out of the side (silver) trim piece. There are 6 bolts that hold this on. Don't forget about the one all the way at the bottom that can't easily be seen like the others. I marked them all in this picture
Fifth you will need to start pulling the side panel off. Start at the edge where I marked it in the next photo and do it with a flat head screw driver and pry it nice and slow going from the edge all the way across the bottom of the door. Once you got it off just a bit put your fingers in there and pull on it to make sure all the clips come loose from the actual door. Don't worry they clips will not break they simply snap off.
Sixth you will need to grab the bottom of the panel and push it up to get the panel to come off the door. After you push it up it will let loose and should come down. It will not completely come off since there are wires still attached to the door. You will not need to take it completely off so do not disconnect anything and let the panel hang on the door.
Your seventh step is to locate the wires coming from the mirror to the door and simply unplug them.
Your eight step is to locate the 3 screws that are on the other side of the mirror. You will use the same size tool as you did on the SRS bolt before to remove these 3. WARNING: WHEN YOU REMOVE THE BOLTS MAKE SURE YOU HOLD THE MIRROR FROM THE OTHER SIDE SO THAT IT DOES NOT FALL COMPLETELY OFF AND HIT THE GROUND.
You are all done now. The finished product looks something like this
Repeat the same steps for the other side and good luck. This is not hard at all just need some practice. First door took me about 20 minutes and the second about 10 minutes.
GOOD LUCK GUYS