Mercedes-Benz S-Class Operator's Manual page 275

Display messages
PRE-SAFE PRE-SAFE Functions Functions
Currently Limited Currently Limited
See Operator's See Operator's
Manual Manual
PRE-SAFE PRE-SAFE Functions Functions
Limited See Limited See
Operator's Manual Operator's Manual
Possible causes/consequences and M M Solutions
®
PRE-SAFE PLUS, PRE-SAFE
COLLISION PREVENTION ASSIST is temporarily inoperative.
Possible causes are:
function is impaired due to heavy rain or snow.
R
the sensors in the radiator grill and the bumper are dirty.
R
the radar sensor system is temporarily inoperative, e.g. due to
R
electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
the system is outside the operating temperature range.
R
the on-board voltage is too low.
R
When the causes stated above no longer apply, the display
message disappears.
®
PRE-SAFE PLUS, PRE-SAFE
COLLISION PREVENTION ASSIST are operative 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.
Secure the vehicle against rolling away (
X
Clean the sensors in the following locations (
X
in the radiator trim
R
in the front bumper
R
in the rear bumper, particularly in the middle of the rear
R
bumper
Restart the engine.
X
®
PRE-SAFE PLUS, PRE-SAFE
COLLISION PREVENTION ASSIST is not available due to a
malfunction. BAS PLUS or the distance warning signal may also
have failed.
Visit a qualified specialist workshop.
X
Display messages
®
Brake or Adaptive Brake Assist of
®
Brake or Adaptive Brake Assist of
page 190).
Y
Y
®
Brake or Adaptive Brake Assist of
273
page 358):
Z