WARNING: This page is about a different car, the 2009 Mercedes-Benz CLK350 and 2008 Mercedes-Benz CLK350. However, it is still accessible from the selected car via links, so may be relevant.
FG 01/07/09/14/setA
ENGINE all
Use:
17 mm width across flats open box wrench bit with 1/2" four-point drive.