MB E430 small but annoying problems

I bought my first mercedes a few days ago (I had alot of Audis and VWs before) Its a 1998 E430 Elegance
I got it cheap so i wanted to try something new. I LOVE the car so far, the best car I ever had. The car was garaged for 5 months before i bought it so I have som small issues.
1. Headrest on the driver seat dosent work (read here on the forum that it could be the motor)
2. Cruise control works sometimes up to 55MPH but most of the time it dosent work. (read somwhere it could be that rear tires are bad balanced?) my own suspicion is that my speed gauge is kind of "shaking" all the time so the CC cant find the speed? (Limiter allways work)
3. When i use kickdown in speeds about 145MPH (high rpm) and when its supposed to change from 4-5 gear it cant change gears instead it just start (whats the expression?) lagging like somebody cut the power...
otherwise the transmission is PERFECT.4. My tail light has a small crack in it so i found other tail lights from a 2002 E class (the facelift) do they fit on my car?
I will get som pictures tomorow.
With kind regards SweV8
Your speedo should be rock solid, so a bouncing indication points to a potential problem with a wheel speed sensor. Check them out first.
Also, do you mean 145 kmh (90 mph or so)? Either way, have you checked for codes?







