Mercedes-Benz 2015 M-Class Operator's Manual page 294

Display messages
292
Display messages
PRE-SAFE PRE-SAFE
Functions Cur‐ Functions Cur‐
rently Limited rently Limited See
Operator's Manual Operator's Manual
Possible causes/consequences and M M Solutions
Vehicles without the Active Driving Assistance package: Adaptive
Brake Assist is temporarily inoperative. Possible causes are:
See function is impaired due to heavy rain or snow.
R
the sensor in the bumper is dirty.
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.
AMG vehicles: ESP
R
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 mes-
sage disappears.
Adaptive Brake Assist is operational 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 bumpers (
X
Restart the engine.
X
AMG vehicles: reactivate ESP
X
®
is deactivated.
page 375).
Y
®
( page 73).
Y
page 182).
Y