Mercedes-Benz S 450 4MATIC, Operator'S Manual

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646
Practical hints
What to do if …?
Display Possible cause/consequence Possible solution
DISTRONIC PLUS
Currently Unavailable
See Oper. Manual DISTRONIC Plus* is switched off and is
temporarily unavailable.
DISTRONIC Plus* is deactivated if:
앫
the DISTRONIC Plus* cover in the radi-
ator grille is dirty
앫
the radar sensors* do not sense any
other vehicles or objects, i.e. road sign
or similar to this, for a long time
앫
the system is overheated
앫
its function is impaired as a result of
heavy precipitation or fog
앫
the battery voltage is insufficient
왘 Clean the DISTRONIC Plus* cover in the radiator grille
(
컄 page 619).
왘
Restart the vehicle.
왘
Try activating DISTRONIC Plus* again later.
왘
Wait until the system cools down or the battery recovers.
DISTRONIC Plus* will be operational again without you needing to
restart the engine if:
앫
the dirt (e.g. slush) loosens while you are driving
앫
the system detects that the radar sensors* are fully available
again
앫
the message in the multifunction display disappears
DISTRONIC Plus* is switched off because
the radar sensor system* is temporarily in-
operative due to electromagnetic interfer-
ence near television and radio transmitter
stations, toll stations, speed measuring
systems, etc. 왘 Wait until the message in the multifunction display disappears.
DISTRONIC PLUS
Inoperative DISTRONIC Plus* is malfunctioning.
BAS Plus* and PRE-SAFE
® Brake* are also
not available.
왘
Contact an authorized Mercedes-Benz Center as soon as pos-
sible.