Mercedes-Benz 2007 GL 320 CDI Operator's Manual page 274

The most likely cause for a malfunctioning
system is a dirty sensor (located behind
the hood grille), especially at times of snow
and ice or heavy rain. In such a case,
Distronic will switch off, and the message
DISTRONIC currently unavailable
Operator's Manual appears in the multi-
function display.
For cleaning and care of the Distronic sen-
sor, see "Cleaning the Distronic* system
sensor cover" ( page 430).
i
If the message DISTRONIC available
again appears during driving the dirt (e.g.
slush) has dissolved; Distronic works again, if
you reactivate it ( page 268).
Turns and bends
– See
In turns or bends, Distronic may not detect
a moving vehicle in front, 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 Distronic. There will be insuffi-
cient distance to the vehicle ahead.
273