Mercedes-Benz C-Class Operator's Manual page 261

Display messages
Collision Preven‐ Collision Preven‐
tion Assist Plus tion Assist Plus
Inoperative Inoperative
PRE-SAFE Inopera‐ PRE-SAFE Inopera‐
tive See Opera‐ tive See Opera‐
tor's Manual tor's Manual
PRE-SAFE Functions PRE-SAFE Functions
Currently Limited Currently Limited
See Operator's See Operator's Man‐ Man‐
ual ual
PRE-SAFE Functions PRE-SAFE Functions
Limited See Opera‐ Limited See Opera‐
tor's Manual tor'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. air bags, remain available.
Visit a qualified specialist workshop immediately.
X
®
PRE‑SAFE PLUS or PRE‑SAFE
Possible causes are:
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
When the causes stated above no longer apply, the display mes-
sage disappears.
®
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 may also have failed.
Visit a qualified specialist workshop.
X
Display messages
®
have failed. All other occupant
®
Brake is temporarily inoperative.
®
Brake are operational again.
page 174).
Y
®
Brake is unavailable due to a mal-
259
Z