I had to change the starter of the R-Class on the weekend because it turned too slowly in the cold state. In the warm everything ok at home, without a stage. Since this is a really great task, I would like to let you share it. So maybe one can avoid the one or other cursing. I think that it was never really intended for Mercedes to change the starter, at least not when engine and gearbox are stuck in the car… If you know what to do and which tool to use I needed about 3 hours. However, it should be possible with the instructions in half of the time. 1. Unscrew the belt under the passenger seat to the right and secure – drive the seat all the way back to the right. 2. Extend engine cover 3. Extend air fluter housing in driving direction right 4. Unscrew clamp from the trouser tube / cat (behind the cylinder head) 5. Screw holder Trouser tube / cat (behind the cylinder head) unscrew SW13 6. To do this, you need a sawn off 16er ring key (approx. 2/3 handle length), thick leather gloves and a lot of power. Maybe there is also a special key from Mercedes. But in house use definitely nothing else fits. It is also not possible to get through the window in the wheelhouse, as the spring leg is directly in front of it. 7. Screw off the two screws from the exhaust holder on the gearbox. Now the cat can be pressed to the side as far as possible. 8. Dissolve screws from the starter. This only works with an overlong 1/2″ tilt extension 500mm (3/8″ probably also) with plug-in nut (and the upper screw additionally with joint) The extension is to be groped past the exhaust pipe/cat and holder. Very important: Please let the screws plug in! 9. Pull out a piece to the rear/top of the starter and then lie down at the engine bearing so that you can move from the top to the 10. Unscrew the two nuts SW10 and SW13 for the cables from the top/front. It is also best to use an over-long 1/4″ extension. 11. Fumble the starter backwards and take it down through the small gap between Kat, Karosse, and motor/gear. The installation then takes place in reverse order. Have fun screwing!