Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.Google+
Car Problem Reports
Mercedes-Benz CLK63 AMG Internal Component Failure May Cause Rough Shifting
Mercedes-Benz CLK63 AMG Problem
Visitor, 2007 Mercedes-Benz CLK63 AMG, 13,800 mi
Clunking transmission when downshifting or starting from a stop.
No fix yet, Has been in the shop 3 times..............