Display messages
Possible causes/consequences and MM Solutions
PRE-SAFEPRE-SAFE
Functions Cur‐Functions Cur‐
rentlyrently LimitedLimited SeeSee
Operator's ManualOperator's Manual
PRE‑SAFE
®
Brake is deactivated or temporarily inoperative. Pos-
sible causes are:
R
function is impaired due to heavy rain or snow.
R
the sensors in the radiator trim and the bumper are dirty.
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.
When the causes stated above no longer apply, the display mes-
sage disappears.
PRE‑SAFE
®
Brake is operational again.
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 161).
X
Clean the sensors in the radiator trim and the bumper
(Y page 287).
X
Restart the engine.
X
AMG vehicles: reactivate ESP
®
(Y page 65).
PRE-SAFEPRE-SAFE
Functions LimitedFunctions Limited
SeeSee Operator'sOperator's Man‐Man‐
ualual
PRE-SAFE
®
Brake is inoperative due to a malfunction. BAS PLUS or
the distance warning signal may also have failed.
X
Visit a qualified specialist workshop.
6
SRS MalfunctionSRS Malfunction
Service RequiredService Required
The restraint system is faulty. The 6 warning lamp also lights
up in the instrument cluster.
G
WARNING
The air bags or Emergency Tensioning Devices may either be trig-
gered unintentionally or, in the event of an accident, may not be
triggered.
There is an increased risk of injury.
X
Visit a qualified specialist workshop.
For further information about the restraint system, see
(Y page 40).
Display messages
221
On-board computer and displays
Z
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