Mercedes CLS550 Cigarette lighter fuse location

SOURCE: cigarette lighter fuse location

The cigarette fuse is located in the battery junction box under the hood, it is fuse # 10 and is a 20A fuse, open the hood and find the box it is on the passenger side towards the back of the compartment, it is 10th in line on the top row, also you can check these fuses without removing them through the clear plastic top so that should make things a little easier too, hope this helps

SOURCE: Where is the Fuse for my cigarette lighter

In the junction box, usually to the left of the steering wheel. Labeled (generally) courtesy or cigar.

SOURCE: Cigarette lighter fuse location on Ford Escort ZX2 2002

I had exactly same problem. I could not use my GPS or charge my cell phone.
In front of the driver sit, there are actually 2 fuse boxes. You probably found the first one. A second one is located above well hidden. Once you find it, you'll find the fuse you are looking for.

SOURCE: The cigarette lighter isn't working

on a right hand drive s type the fuse for the cigarette lighter is under dash right hand side it is fuse no 32 20 amps

SOURCE: Locating fuse box for cigarette lighter in 05 Chevy Malibu Classi

It is in the rear fuse block, in the trunk under the left side carpet. Good Luck