There is a plastic, for lack of a better term, lever that sits just to the side of the headlight assembly. You push that toward the fender, gently, and it releases the side marker. Then you pull it out toward the front of the car and away from the fender. I just had to do this when I was inspecting my coil packs on my 93 400 SEL. To replace, make sure that the two guides that slide into the side of the headlight bezel are aligned to the slots on the headlight bezel and push in gently, as the electrical plug of the side marker has to get by the metal frame that the side marker set in before it will lock in place. Hope this helps.

 

It helps allot - thank you ..
One additional question - The lever you refer to is visible from the engine compartment or is it accessed from the front with a flat blade?

 

This should help

Look at steps 1-2-3 in the following link. That should answer your questions.

V12 Uber Alles, Cleaning the inside of the Headlamp Lenses in a W140 Mercedes Benz

Telechronos

1999 S500 Grand Edition
1984 380 SL
1955 MG TF1500
1969 Factory Stick, Factory Tri-Power Pontiac Grand Prix SJ

 

Look at steps 1-2-3 in the following link. That should answer your questions.

V12 Uber Alles, Cleaning the inside of the Headlamp Lenses in a W140 Mercedes Benz

Telechronos

1999 S500 Grand Edition
1984 380 SL
1955 MG TF1500
1969 Factory Stick, Factory Tri-Power Pontiac Grand Prix SJ

PERFECT! With such detail in this listing the only thing that would make it easier is for someone to come over and do it for me!

Thank you!!

 

Sorry I could'nt get back to you sooner but telechronos sent you to the perfect site. This site has alot of D.I.Y info and I refer to it alot myself. Glad you got the info you needed!