Hi I have a problem that the local MB dealer/workshop (in Norway) cannot fix! I hope someone in this forum might have some solutions...

For some time now (about 6 months) my SLK starts to vibrate when i accelerate over a certain speed : the vibration starts at 55kph and are still present when i accelerate to 90 kph ( but feels less present) and still 100 kph. If should try to describe the vibration sensation it should be : You know when you open the car door window slightly when you drive at high speed. You get a kind of a muffled vibration sensation inside the car.
The problem does not allways occour everytime i drive the car, sometimes it may just happen 2 times during a week somtimes everyday for a week..... Ive tried to figure out if there are any system to when it happens ( temperature, moisture, when the car is warm/cold....) cannot find anyting. sometimes the vibrations can stop aoccouring when i turn of the ignition and start the car again and accellerate to over 55 kph.

like i mentioned the MB workshop cannot find the solution. they have tried several "solutions".... But they say that there is no info regarding this problem.. they are working in the blind...

thanks

Samson