Mercedes-Benz A Series 2015 Owner's Manual page 281

Display messages
278
Driving systems
Display messages
À
Attention Assist: Attention Assist:
Take a break! Take a break!
À
Attention Assist Attention Assist
inoperative inoperative
ë
Off Off
Lane Keeping Lane Keeping
Assist currently Assist currently
unavailable See unavailable See
Owner's Manual Owner's Manual
Lane Keeping Lane Keeping
Assist inoperative Assist inoperative
Possible causes/consequences and M M Solutions
Based on certain criteria, ATTENTION ASSIST has detected fatigue
or a lack of concentration on the part of the driver. A warning tone
also sounds.
If necessary, take a break.
X
During long journeys, take regular breaks in good time so that you
get enough rest.
ATTENTION ASSIST is inoperative.
Consult a qualified specialist workshop.
X
The HOLD function is deactivated. The vehicle is skidding.
A warning tone also sounds.
Reactivate the HOLD function later (
X
The HOLD function is deactivated. When the brake pedal is firmly
depressed, an activation condition is not fulfilled.
A warning tone also sounds.
Check the activation conditions for the HOLD function
X
( page 204).
Y
Lane Keeping Assist is deactivated and temporarily inoperative.
Possible causes:
the windscreen is dirty in the camera's field of vision
R
visibility is impaired due to heavy rain, snow or fog
R
there have been no lane markings for an extended period
R
the lane markings are worn, dark or covered, e.g. by dirt or snow
R
Once the causes listed above no longer apply, the display message
goes out.
Lane Keeping Assist is operational again.
If the display message does not disappear:
Pull over and stop the vehicle safely as soon as possible, paying
X
attention to road and traffic conditions.
Safeguard the vehicle against rolling away (
X
Clean the windscreen.
X
Lane Keeping Assist is faulty.
Consult a qualified specialist workshop.
X
page 204).
Y
page 184).
Y