Mercedes-Benz 2013 M Class - Manual (Page 292)

Display messages Possible causes/consequences and M Solutions
PRE-SAFE
Functions
Currently Limited
See Operator's
Manual
Vehicles without the Active Driving Assistance package: Adaptive
Brake Assist is temporarily inoperative. Possible causes are:
R
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
electromagnetic radiation emitted by nearby TV or radio
stations 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.
When the causes stated above no longer apply, the display
message disappears.
Adaptive Brake Assist 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 179).
X Clean the bumpers ( Y page 373).
X Restart the engine.
X AMG vehicles: reactivate ESP ® ( Y page 71).
290
Display messages
On-board computer and displays