Benzslammer

Just to add to this...... I have a 2003 CLK320 and all the symbols around the switch light up. I also have a 2003 S203 and that lights up the same.

CLK350_ATX

this is mine during the night when headlight is on, but no illumination o the symbols.

merceBENZ

Everybody has pretty much different pattern of what is illuminate.

Yidney

I think it's really just two. Older vs. newer. Some people turn on their fogs for their pics some don't. But I think the only real difference is the icons around the big switch. You can get older switches on ebay.

merceBENZ

Are you positive about old ones? How old? Up to what year?

Yidney

Yeah, I'm positive. Look at the years of the cars that have posted with full illumination. Plus, as I said, this not the first thread on the subject. What year? Not 100% sure. Probably with the face lift, so in 2005.

waveterrorist

My 05 came with halogens and the switch did not illuminate.
I picked up a switch on ebay for $18 from either an 04 or 05 with xenons and it lights up

BF_JC230

If this is like the w203s, then it was with the facelift. In our case with MY05. There are threads in the w203 forum (sorry if here too with a good search) and there are instructions on how to illuminate. If I recall, you need another switch, or switch row to use as well as a (side clamp/tweezer works best)soldering iron to add LEDs and resistors. Not sure if pre and post facelifts swap 100%. The above post may confirm that they can be swapped. My OEM unit, MY05 with bi-xenon did NOT fully illuminate.

waveterrorist

I took the old switch apart before tossing it and it was clear by design that it was never meant for that portion to be illuminated.

BF_JC230

I don't want to miss-represent with w203 information...but here is what we have done to our headlight switches...perhaps the w209 is incapable of this modification...

https://mbworld.org/forums/c-class-w...tch-row-6.html

mbnz230

here's my 04 clk500, everything lights up except for the center knob. the power seats on the door panel do not light up though, weird.

waveterrorist

I'm going to take a wild guess you have xenons, and that my friends may just be the story here....

eteller

2009 CLK 350, no xenons, no lights here :{

NewShockerGuy

Just drove the clk tonight dropping my wife off. I thought for sure they didn't light up but they infact do.


2005 CLK with halogens from the factory. I installed OEM bi-xenon projectors a year ago.


Headlight switch fully illuminates as pictured attached.

Didn't snap another picture but both fog and rear fog leds work as well... they are just too bright and would have washed out the other illuminating for picture sake.

-Nigel

sciencebod

I have a W203 C55 2005 sedan, The main light switch only part illuminates and one can't tell what level of lighting is selected at night except by feel or turning on the overhead courtesy light to check. I took out the switch unit and took it apart. The printed board inside DOES have corresponding LED's to each of the light icons not working. So I presume the system control for this function is not enabled. Strange as it is a safety issue really. Why would MB do this and not consistently accross the model range and years of manufacture?

Anker

Why would you assume that installed LEDs were disabled by the manufacturer?

Kelvin Bellrose

2007 clk550. Doesn't seem like mine light up either.

sciencebod

Previous comments allude to MB disabling the switch icon lights. I don't know if this is true or not. But upon taking apart the switch unit I noted that tiny LEDs were built into the switch PCB. There are no light bulbs as such. So it may be that the SAM controlling the lights has this function disabled/faulty.

04CLK5.4