I just pulled the one out of the car and the part number on it is 005 545 12 32. Are all these part numbers interchangeable. Did Mercedes simply change the part number based on the model and year of the car, but in actuality it is still the same part????? I pulled the board out of the housing and it looks good, is it still possible that heating each solder joint with a soldering iron will fix my problem. The only problem with it now is that when you set the cruise it just keeps accelerating. Is there anything else that woudl cause this other than the amplifier.

Thanks again,
Kevin