Mercedes-Benz E-Sedan 2012 Owners Manual - Manual (Page 214)

Active Lane Keeping Assist does not detect
traffic situations or road users. An
inappropriate brake application may be
interrupted at any time if you:
R steer slightly in the opposite direction.
R use a turn signal.
R
clearly brake or accelerate.
A lane-correcting brake application is
interrupted automatically if:
R
a driving safety system intervenes, e.g.
ESP
® , PRE-SAFE ® Brake or Active Blind
Spot Assist.
R lane markings can no longer be recognized.
Switching on Active Lane Keeping Assist
X Switch on Active Lane Keeping Assist using
the on-board computer (
Y page 225).
Symbol : appears in the multifunction
display.
If your speed exceeds 40 mph (60 km/h)
and lane markings are detected,
symbol : is highlighted. Active Lane
Keeping Assist is ready for use.
212
Driving systems
Driving and parking