Mercedes-Benz M-Class Owner's Manual page 263

Display messages
260
Display messages
PRE-SAFE
Functions cur‐
rently limited See
Owner's Manual
PRE-SAFE
Functions limited
See Owner's Manual
ü
ý
Possible causes/consequences and M Solutions
G Risk of accident
®
PRE-SAFE Brake is temporarily inoperative if:
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
R
electromagnetic radiation emitted by nearby TV or radio sta-
tions or other sources of electromagnetic radiation.
the system is outside the operating temperature range.
R
the on-board voltage is too low.
R
®
PRE-SAFE Brake is operational again and the display message
disappears if:
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.
R
If the display message continues to be displayed:
Clean the DISTRONIC PLUS cover in the radiator grille
X
( page 327).
Y
Clean the bumpers (
X
Restart the engine.
X
Wait until the battery is sufficiently charged.
X
G Risk of accident
®
PRE-SAFE Brake is faulty. BAS PLUS or the distance warning sig-
nal may also have failed.
Visit a qualified specialist workshop.
X
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: ( page 49).
Y
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.
If necessary, ask the occupants in the rear to fasten their seat
X
belts.
For further information on the status indicator for the rear seat
belts: ( page 49).
Y
page 327).
Y