Mercedes-Benz 2009 R-Class Operator's Manual page 174

Controls in detail
Driving systems
Rear area warning indicator
Left side of the vehicle
1
Right side of the vehicle
2
Readiness indicators
3
Each warning indicator is divided into five
yellow and two red distance segments for
either side of the vehicle. The Parktronic
system is ready to measure when the yellow
readiness indicators are illuminated.
3
The current transmission position determines
which warning indicator will be activated.
172
Current Warning indicator
transmission
position
D Front area activated
R or N Front and rear area
activated
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
R
warning 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 shifted
into park position P or the parking brake is
engaged.
Rear area: An intermittent acoustic
R
warning 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 shifted
into drive position D, or park position P, or
the parking brake is engaged.
Switching the Parktronic system on/off
The Parktronic system switches on
automatically when the ignition is switched
on.
Parktronic switch
1
Indicator lamp
2
X
Switching off Parktronic system: Press
Parktronic switch 1.
Indicator lamp comes on.
2
X
Switching on Parktronic system: Press
Parktronic switch again.
1