Mercedes-Benz CLS 2012, Owner'S Manual

Page: 256 / 405

Display messages Possible causes/consequences and M Solutions
PRE-SAFE
inoperative See
Owner's Manual
Important functions of PRE-SAFE ® have failed. All other occupant
safety systems, e.g. airbags, remain available.
X
Visit a qualified specialist workshop immediately.
PRE-SAFE
Functions cur‐
rently limited See
Owner's Manual
PRE-SAFE
®
Brake is temporarily inoperative. Possible causes:
R
the function is impaired due to heavy rain or snow.
R
the sensors in the radiator trim and in the bumpers are dirty.
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
AMG vehicles: ESP ® is deactivated.
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.
PRE-SAFE
®
Brake 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 165).
X
Clean the sensors in the radiator trim and in the bumpers
(
Y
page 328).
X
Restart the engine.
X
AMG vehicles: reactivate ESP
®
(
Y
page 68).
PRE-SAFE
Functions cur‐
rently limited See
Owner's Manual
PRE-SAFE ® Brake is inoperative due to a fault. BAS PLUS or 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.
For further information on the status indicator for the rear seat
belts: (
Y
page 52).
Display messages
253
On-boar
d
compu
ter
and
displa
ys
Z