Mercedes-Benz 2013 CLA, Owner'S Manual

Page: 236 / 352

Display messages Possible causes/consequences and
M
Solutions
Collision Preven‐
tion Assist Plus
inoperative
COLLISION PREVENTION ASSIST PLUS is malfunctioning. The dis-
tance warning signal may also have failed.
X
Visit a qualified specialist workshop.
PRE-SAFE
Function currently
limited See Own‐
er's Manual
Adaptive Brake Assist is temporarily inoperative. Possible causes:
R
the front bumper is dirty.
R
the function is impaired due to heavy rain or snow.
R
the radar sensor system is temporarily inoperative, e.g. due to
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
R
the system is outside the operating temperature range.
R
the on-board voltage is too low.
Once the causes listed above no longer apply, the display message
goes out.
Adaptive Brake Assist is operational again.
If the display message does not disappear:
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions.
X Secure the vehicle against rolling away (
Y
page 162).
X
Clean the front bumper (
Y
page 291).
X Restart the engine.
PRE-SAFE
Function limited
See Owner's Manual
Adaptive Brake Assist is faulty. The distance warning signal may
also have failed.
X
Visit a qualified specialist workshop.
ü If the symbol appears in the multifunction display, a seat belt
tongue has been inserted into a rear seat belt buckle.
Further information on the status indicator for the rear seat belts
(
Y
page 49).
234
Display messages
On-board computer and displays