Mercedes-Benz 2008 R 320 CDI 4MATIC Operator's Manual page 515

Practical hints
Towing the vehicle
Warning!
With the engine not running, there is no
power assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle. Adapt your driving accordingly.
!
When towing the vehicle with all wheels on
the ground, the automatic transmission must be
in neutral position N.
If you turn off the engine
using the SmartKey and
remove the SmartKey from the starter
switch
or
open a front door
or when using the KEYLESS-GO* start/stop
button and open a front door
the automatic transmission will shift to park
position P automatically.
514
If you want the gear position to remain in
G
neutral position N, observe the following
instructions.
Warning!
When leaving the SmartKey or SmartKey
with KEYLESS-GO* in the starter switch, do
not leave children unattended in the vehicle.
It is possible for children to switch on the
ignition which could result in unsupervised
use of vehicle equipment.
A child's unsupervised access to a vehicle
could result in an accident and/or serious
personal injury.
Vehicles with SmartKey:
With the vehicle at a standstill and the
ignition switched on, shift the
automatic transmission to neutral
G
position N.
If engaged, release the parking brake
( page 56).
Switch off the ignition and leave the
SmartKey in the starter switch.
Vehicles with KEYLESS-GO*:
With the vehicle at a standstill, depress
the brake pedal and keep it pressed.
With the ignition switched on shift the
automatic transmission to park
position P.
Release the brake pedal.