Display messages
Possible causes/consequences and
M
Solutions
DISTRONIC PLUS
currently unavail‐
able See Owner's
Manual
DISTRONIC is deactivated and temporarily inoperative. Possible
causes:
R
the DISTRONIC PLUS cover in the radiator grille is dirty.
R
function is impaired due to heavy rain or snow.
R
the sensors in the bumpers 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
the system is outside the operating temperature range.
R
The on-board voltage is too low.
A warning tone also sounds.
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
Apply the parking brake.
X
Clean the DISTRONIC PLUS cover in the radiator grille
(
Y
page 330).
X
Clean the bumpers (
Y
page 330).
X
Restart the engine.
If the system detects that the sensors are fully operational, the
display message disappears.
DISTRONIC is operational again.
DISTRONIC PLUS
inoperative
DISTRONIC PLUS is faulty. BAS PLUS and PRE-SAFE
®
Brake may
also have failed.
A warning tone also sounds.
X
Visit a qualified specialist workshop.
DISTRONIC PLUS
suspended
You have depressed the accelerator pedal. DISTRONIC PLUS is no
longer controlling the speed of the vehicle.
X
Remove your foot from the accelerator pedal.
DISTRONIC PLUS
--- km/h
An activation condition for DISTRONIC PLUS is not fulfilled.
X
Check the activation conditions for DISTRONIC PLUS
(
Y
page 185).
DISTRONIC PLUS and
SPEEDTRONIC
inoperative
DISTRONIC PLUS and SPEEDTRONIC are faulty. A warning tone
also sounds.
X
Visit a qualified specialist workshop.
Display messages
271
On-boar
d
compu
ter
and
disp
lays
Z
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