Display messages
Possible causes/consequences and
M
Solutions
PRE-SAFE
Functions cur‐
rently limited See
Owner's Manual
G
Risk of accident
PRE-SAFE
®
Brake is temporarily inoperative if:
R
the DISTRONIC PLUS cover in the radiator grille is dirty.
R
the sensors in the bumpers are dirty.
R
its 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.
PRE-SAFE
®
Brake is operational again and the display message
disappears if:
R
the dirt (e.g. slush) drops away while the vehicle is in motion.
R
the system detects that the sensors are fully available again.
R
the system is within the operating temperature range.
If the display message continues to be displayed:
X
Clean the DISTRONIC PLUS cover in the radiator grille
(
Y
page 327).
X
Clean the bumpers (
Y
page 327).
X
Restart the engine.
X
Wait until the battery is sufficiently charged.
PRE-SAFE
Functions limited
See Owner's Manual
G
Risk of accident
PRE-SAFE
®
Brake is faulty. BAS PLUS or the distance warning sig-
nal 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 clipped into a rear seat belt buckle.
For further information on the status indicator for the rear seat
belts: (
Y
page 49).
ý
G
Risk of injury
If the symbol appears in the multifunction display, a seat belt
tongue has not been clipped into a rear seat belt buckle.
X
If necessary, ask the occupants in the rear to fasten their seat
belts.
For further information on the status indicator for the rear seat
belts: (
Y
page 49).
260
Display messages
On-boar
dc
ompu
ter
and
displa
ys