Mercedes-Benz S-Class 2011 - Manual (Page 353)

X To defrost: check the automatic air
conditioning settings ( Y page 293) and fold
down the camera cover ( Y page 457).
X To defrost the inside of the windshield:
fold down the camera cover ( Y page 457)
and clean the windshield ( Y page 455).
Driving systems
351
Driving and parking
Z