Driving Systems - Mercedes-Benz GL-Class 2009 Owner's Manual

wobuchh,
The engaged differential appears in the multi-
function display:
The differential lock for the transfer case
A
is locked.
The differential locks are not controlled auto-
matically. The steerability of the vehicle is
restricted considerably. Drive carefully and
accelerate gently for optimum traction.
You can switch back to automatic mode at
any time. For safety reasons, the differential
locks disengage automatically at speeds
above 50 km/h. If you stop the vehicle and
switch off the ignition for longer than ten sec-
onds, the differential locks switch back to
automatic mode.
Message in the multi-function display
Diff. lock system overheated.
Wait briefly
The differential lock system has overheated
and briefly disengaged.
Continue driving.
X
The differential locks cool off and are soon
available once again.

Driving systems

Overview of driving systems
The vehicle's driving systems are described
on the following pages:
R cruise control, Distronic* and Speedtronic,
which are used to control the speed of the
vehicle
Adaptive damping system (ADS), for indi-
R
vidual adjustment of suspension tuning
* optional
Version: 2.11.8.1
Driving systems
level control, for individual adjustment of
R
ground clearance
R PARKTRONIC*, which assists you in park-
ing and manoeuvring
R reversing camera*, which assists you when
parking and manoeuvring
The ABS, BAS, adaptive brake lights, ESP
EBV and 4ETS driving safety systems and the
distance warning function* are described in
the "Driving safety systems" section
( page 49).
Y
Cruise control
Cruise control maintains a constant road
speed for you. It brakes automatically in order
to avoid exceeding the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden or towing a trailer, you must
select shift range 1, 2 or 3 in good time. By
doing so, you will make use of the braking
effect of the engine, which relieves the load
on the brake system and prevents the brakes
from overheating and wearing too quickly.
G Risk of accident
Do not change down for additional engine
braking on a slippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid.
Use cruise control only if road and traffic con-
ditions make it appropriate to maintain a
steady speed for a prolonged period. You can
store any road speed above 30 km/h.
G
Risk of accident
Cruise control cannot take account of road
and traffic conditions.
Always pay attention to traffic conditions
even when cruise control is activated.
Cruise control is only an aid designed to assist
driving. You are responsible for the vehicle's
speed and for braking in good time.
117
®
,
Z