Operation Manual

Display messages
Possible causes/consequences and M Solutions
DISTRONIC PLUS Off
DISTRONIC PLUS has been deactivated (Y page 128).
If it was not deactivated by the driver, a warning tone also sounds.
DISTRONIC PLUS Now
Available
DISTRONIC PLUS is operational again after having been temporarily
unavailable. You can now reactivate DISTRONIC PLUS (
Y page 128).
DISTRONIC PLUS Cur‐
rently Unavailable
See Operator's Man‐
ual
DISTRONIC PLUS is temporarily inoperative.
Possible causes are:
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
the system is outside the operating temperature range.
R
the on-board voltage is too low.
A warning tone also sounds.
When the causes stated above no longer apply, the display message
disappears.
DISTRONIC PLUS is 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 119).
X
Restart the engine.
DISTRONIC PLUS Inop‐
erative
DISTRONIC PLUS is defective.
A warning tone also sounds.
X
Visit a qualified specialist workshop.
DISTRONIC PLUS Sus‐
pended
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
- - - mph
An activation condition for DISTRONIC PLUS is not fulfilled.
X
Check the activation conditions for DISTRONIC PLUS (Y page 128).
DISTRONIC PLUS and
SPEEDTRONIC Inoper‐
ative
DISTRONIC PLUS and SPEEDTRONIC are faulty. A warning tone also
sounds.
X
Visit a qualified specialist workshop.
Cruise Control Inop‐
erative
Cruise control is malfunctioning.
A warning tone also sounds.
X
Visit a qualified specialist workshop.
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Display messages
On-board computer and displays