Mercedes-Benz R-Class W251 2009 Operator's Manual page 284

Vehicle status messages in the multifunction display
282
Vehicle
Display messages
Depress
brake to
shift out
of P.
Door Open
Drive to
workshop
without
shifting
gears.
Only
shift to
P when
vehicle
is at a
standstill
.
Shift to
P or N to
start
engine.
Auxiliary
Battery
Possible causes/consequences and X Solutions
You have attempted to shift the automatic transmission into
drive position D, reverse gear R or neutral position N without
depressing the brake pedal.
X
Depress the brake pedal.
Vehicle You have opened the driver's door and the automatic
Not In transmission is still in drive position D, reverse gear R or
Park neutral position N.
X
Before you leave the vehicle, make sure the automatic
transmission is in park position P and the parking brake is
engaged.
The automatic transmission cannot be shifted out of the
current transmission position because of a malfunction.
If the automatic transmission is in drive position D:
X
Without shifting the automatic transmission out of drive
position D, drive to an authorized Mercedes-Benz Center.
If the automatic transmission is set to position neutral
position N, reverse gear R or park position P:
X
Do not drive.
X
Contact an authorized Mercedes-Benz Center or call
Roadside Assistance.
You have attempted to shift the automatic transmission into
park position P although the vehicle was still in motion.
X
Stop the vehicle.
You have attempted to start the engine with the KEYLESS-GO
start/stop button while the automatic transmission was in
reverse gear R or drive position D.
X
Shift the automatic transmission into park position P or
neutral position N. Make sure the brake pedal is depressed.
Malfunctio
The backup battery for the automatic transmission is no
n
longer charging.
X
Contact an authorized Mercedes-Benz Center.