Mercedes-Benz 2008 R 320 CDI 4MATIC Operator's Manual page 285

Controls in detail
Driving systems
Each warning indicator is divided into five
yellow and two red distance segments for
either side of the vehicle. The Parktronic
system is ready when the yellow readiness
indicators 3 are illuminated.
The current transmission position deter-
mines which warning indicator will be
activated.
Transmission Warning indicator
position
D Front area activated
R or N Front and rear area
activated
P Neither activated
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As your vehicle approaches an object, one
or more distance segments will illuminate,
depending on the distance. When the
seventh distance segment illuminates, you
have reached the minimum distance.
Front area: An intermittent acoustic
warning lasting a maximum of
2 seconds will sound as the first red
distance segment illuminates and a
constant acoustic warning lasting a
maximum of 2 seconds will sound for
the second red distance segment. The
signal is canceled when the automatic
transmission is set to position P or the
parking brake is set.
Rear area: An intermittent acoustic
warning lasting a maximum of
2 seconds will sound as the first red
distance segment illuminates and a
constant acoustic warning lasting a
maximum of 2 seconds will sound for
the second red distance segment. The
signal is canceled when the automatic
transmission is set to position D, P, or
the parking brake is set.
Switching the Parktronic system
on/off
You can switch off the Parktronic system
manually.
The Parktronic switch is located in the
upper part of the center console.
1 Parktronic switch
2 Indicator lamp
Switching off
Press Parktronic switch 1.
Indicator lamp 2 comes on.