Mercedes-Benz C-Class 2014 Owner's Manual page 326

Display messages
Collision Preven‐ Collision Preven‐
tion Assist Plus tion Assist Plus
inoperative inoperative
PRE-SAFE inopera‐ PRE-SAFE inopera‐
tive See Owner's tive See Owner's
Manual Manual
PRE-SAFE Functions PRE-SAFE Functions
currently limited currently limited
See Owner's Manual See Owner's Manual
PRE-SAFE Functions PRE-SAFE Functions
limited See Own‐ limited See Own‐
er's Manual er's Manual
Possible causes/consequences and M M Solutions
COLLISION PREVENTION ASSIST PLUS is temporarily inoperative
due to a malfunction. Adaptive Brake Assist may also have failed.
Visit a qualified specialist workshop.
X
Important functions of PRE-SAFE
safety systems, e.g. airbags, remain available.
Visit a qualified specialist workshop immediately.
X
®
PRE‑SAFE PLUS or PRE‑SAFE
Possible causes:
the function is impaired due to heavy rain or snow
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
the system is outside the operating temperature range
R
the on-board voltage is too low
R
Once the causes listed above no longer apply, the display message
goes out.
®
PRE‑SAFE PLUS and PRE‑SAFE
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
Restart the engine.
X
®
PRE‑SAFE PLUS or PRE‑SAFE
function. BAS PLUS might also be deactivated.
Visit a qualified specialist workshop.
X
Display messages
®
have failed. All other occupant
®
Brake is temporarily inoperative.
®
Brake are operational again.
page 207).
Y
®
Brake is unavailable due to a mal-
323
Z