Operation Manual

Display messages
Possible causes/consequences and M Solutions
PRE-SAFE
Functions Currently
Limited See Opera‐
tor's Manual
PRE‑SAFE
®
PLUS or PRE‑SAFE
®
Brake is temporarily inoperative.
Possible causes are:
R
function is impaired due to heavy rain or snow.
R
the radar sensor system is temporarily inoperative, e.g. due to elec-
tromagnetic radiation emitted by nearby TV or radio stations or
other sources of electromagnetic radiation.
R
Mercedes-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.
PRE‑SAFE
®
PLUS and PRE‑SAFE
®
Brake are 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 146).
X
Restart the engine.
X
Mercedes-AMG vehicles: switch ESP
®
on again (Y page 71).
PRE-SAFE
Functions Limited
See Operator's Man‐
ual
PRE‑SAFE
®
PLUS or PRE‑SAFE
®
Brake is unavailable due to a mal-
function. BAS PLUS with Cross-Traffic Assist may also have failed.
X
Visit a qualified specialist workshop.
216
Display messages
On-board computer and displays