Today was SUCH a beautiful day I decided to dedicate it to my C43. I started by giving her a good wash and then decided I was going to attack all the small details that have been bugging me since I got the car 2 months ago.

1.) Fixed the integrated microphone in my rear view mirror, it was pushed up inside the housing of the mirror. Pulled the mirror off (THANKS YOUTUBE) and reset the microphone, took less than 5 minutes....

2.) Fixed my rear drivers side door lock, I could hear the air hissing but the lock wouldn't open or close. Took the door panel off (THANKS YOUTUBE) and saw that the yellow air line was severed in 2 pieces. pulled it out and sealed it put it back in and BOOM door locks works.....

3.) Fixed my high mounted brake light, damn thing was rattling when I had my music up loud, pulled it off and reset it BOOM no more rattle

4.) Fixed my dummy light sensor for the windshield washer fluid reservoir. The sensor is a stick with a magnet on a float. As the float rises the magnet closes or opens a magnetic reed switch (at least that what it looked like to me). I pulled the sensor out (it was CAKE) opened up the sensor and cleaned it. I made sure the float could move up and down and I cleaned the contacts for the electrical connection. Put it back in and BOOM..... Dummy light turns off. And to think I almost went to the stealership and bought a new one for $50

Only small detail I didn't get to is the drivers head rest, when I have my door open I can adjust the head rest up and down but as soon as I close my door I can't... obviously this must be an electrical connection issue and I will pull the door panel off tomorrow to check it out. This one doesn't bother me too much as I don't adjust my head rest and if I wanted to all I have to do is open the door but I do want everything to work like it is supposed to.

 

my drivers head rest does the same thing! if you lean forward in the seat it will then move up and down - not sure if one or both of the driver seat bolsters interferes with the operation of the head rest or not. Let me know what you find out!

 

Yeah I thought I remembered being able to adjust it with the door closed, I must of been leaning forward. I will mess around with it and post what I find.

 

Ok it gets even more difficult to understand. I checked and you were right, if I lean forward it works BUT I have to have a door open!!! I tried with the drivers door and passenger door open and it worked with both. I am baffled to say the least. Does anyone understand this circuit??? Is it supposed to work like this?

 

So I was wrong, As long as I lean forward the headrest will work with the doors open OR closed. I have been doing a lot of research on this and here is something that I had found:

"Hi I have a clk320 2004 convertible and the rear head rests do not work off the push button just sounds dead they are in the down position, i also find that i can only move the front headrests up and down when no one is sitting in the seats any advice please thanks!"

So it seems that the W202 isn't the only one! Some guy suggested this:

"Try operating them with the drivers door open and the key out of the ignition when sat in the seat."

Apparently this worked for the guy whatever that means. I guess I can live with a head rest that only works when I lean forward as I NEVER adjust my headrest.

 

My headrest works sometimes and other times it does not, I have to move the passenger seat one up/down then the drivers seat sometimes kicks in. I wonder if it is the seat relay that is located in the trunk of C43 going bad?