Is my caster off or is the W220 just like this?
Cause may be:
a) stiff or corroded joints/bearings of the steering drive shaft
b) the steering rack which has a centering device and position sensor
c) the front drive steering and suspension components being "off"
d) wheel alignment
Since you say you are not a mechanical person, don't follow guesswork but get it checked at a shop (not necessarily MB)
Good luck!


