Mercedes-Benz 2009 CL-Class Operator's Manual page 363

The DISTRONIC Plus regulates only the
distance between your vehicle and those
directly ahead of it. It may not register
stationary objects in the road, e.g.:
a stopped vehicle in a traffic jam
R
a disabled vehicle
R
an oncoming vehicle
R
The driver must always be alert, observe all
traffic and intercede as required by means
of steering or braking the vehicle.
G Warning!
The DISTRONIC Plus should not be used in
snowy or icy road conditions.
The most likely cause for a malfunctioning
system is a dirty sensor (located in the hood
grille and in the bumper), especially at times
of snow and ice or heavy rain.
In such a case, the DISTRONIC Plus will
switch off, and the message DISTRONIC
PLUS Currently Unavailable See Oper.
Manual appears in the multifunction display.
For cleaning and care of the sensors, see
( Y page 465).
If the message DISTRONIC PLUS
i
Currently Unavailable See Oper.
Manual disappears during driving and the
last speed stored flashes for approximately
5 seconds, the dirt (e.g. slush) has
dissolved; the DISTRONIC Plus is available
again.
Another cause might be that the radar
sensors have been manually switched off in
the instrument cluster control system. Please
verify that the radar sensors are switched on
( Y page 247).
Turns and bends
In turns or bends, the DISTRONIC Plus may
not detect a preceding vehicle, or it may
detect one too soon. This may cause your
vehicle to brake late or unexpectedly.
Controls in detail
Driving systems
Offset driving
A vehicle traveling in your lane but offset from
your direct line of travel may not be detected
by the DISTRONIC Plus. There will be
insufficient distance to the preceding vehicle.
Lane changing
Z
361