Mercedes-Benz 2012 A Class - Manual (Page 239)

Display messages Possible causes/consequences and M Solutions
PRE-SAFE
Functions cur‐
rently limited See
Owner's Manual
Adaptive Brake Assist is temporarily inoperative. Possible causes:
R
the radar sensor cover in the radiator trim is dirty.
R
the 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 AMG vehicles: ESP ® is deactivated.
R
the system is outside the operating temperature range.
R
the on-board voltage is too low.
Once the causes listed above no longer apply, the display message
goes out.
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 162).
X Clean the radar sensor cover in the radiator grille
(
Y page 294).
X Restart the engine.
X AMG vehicles: reactivate ESP ® ( Y page 66).
PRE-SAFE
Functions limited
See Owner's Manual
Adaptive Brake Assist is faulty. The distance warning signal 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 inserted into a rear seat belt buckle.
Further information on the status indicator for the rear seat belts
(
Y page 49).
ý If the symbol appears in the multifunction display, a seat belt
tongue has not been inserted in a rear seat belt buckle.
G WARNING
A seat belt which is not worn correctly, or which has not been
engaged in the seat belt buckle correctly, cannot provide the
intended level of protection.
This poses an increased risk of injury.
X If necessary, ask the occupants in the rear to fasten their seat
belts (
Y page 47).
Further information on the status indicator for the rear seat belts
(
Y page 49).
Display messages
237
On-board computer and displays
Z