2010 MERCEDES-BENZ GL450 dsr speed

If the connection is successful and this
feature is supported by your network
provider, the name of the party (if stored in
your phone book) you are calling will
appear in the multifunction display.
The control system stores the dialed
number in the redial memory.
or
XPress button ~ if you do not want to
make the call.
Redialing
The control system stores the most recently
dialed phone numbers. This eliminates the
need to search through your entire phone
book.
XPress button U or V repeatedly until
the message TEL appears in the
multifunction display.
XPress button 6.
The first number in the redial memory
appears in the multifunction display.
XPress button & or * repeatedly until
the desired number or name appears in the
multifunction display.
XPress button 6.
The control system dials the selected
phone number.
Driving systems
Introduction
This section describes the following driving
systems of your vehicle:
RCruise control
RDistronic
RDistance warning function (only available
with Distronic)
RHill-start assist system
RDownhill Speed Regulation (DSR)
ROff-road driving program (vehicles without
enhanced off-road package)
RAir suspension program (Adaptive
Damping System (ADS) and vehicle level
control)
RAll-wheel drive (4MATIC)
RParktronic system
RRear view camera
Vehicles with enhanced off-road package:
For information on LOW RANGE mode, see
“LOW RANGE mode” (Y page 120) and for
information on differential locks, see
“Differential locks” (Y page 121).
The driving safety systems ABS, BAS, EBP,
ESP® and 4-ETS are described in the “Safety
and security” section (Y page 61).
Cruise control
The cruise control maintains the speed you
set for your vehicle automatically.
The use of the cruise control is recommended
for driving at a constant speed for extended
periods of time.
The currently set speed or last set speed
(“Resume” function) appears in the status
indicator of the multifunction display:
RUSA only: e.g. Cruise 55 Miles
RCanada only: e.g. ¯ 90 Km/h
iThe cruise control should not be activated
during off-road driving.
GWarning!
The cruise control is a convenience system
designed to assist the driver during vehicle
operation. The driver is and must always
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have not yet been detected by the Distronic.
There will be insufficient distance to the
preceding vehicles.
Distance warning function
This function warns you at a vehicle speed of
above approximately 20 mph (30 km/h) in
the following cases:
R At the current speed, the distance between
your vehicle and the preceding vehicle is
too low for several seconds. The distance
warning lamp · in the instrument
cluster comes on.
R You are gaining on a preceding vehicle
rapidly. An intermittent warning sounds
and the distance warning lamp · in the
instrument cluster comes on.
If these warnings are issued, you must apply
the brakes to maintain a safe distance and
avoid a collision with the preceding vehicle.
When depressing the brake pedal, the
warning sound ceases. The warning sound
will also cease when the distance to the
preceding vehicle is sufficient again without
applying the brakes. In this case, the distance
warning lamp · will also go out.
GWarning!
If the distance warning lamp · in the
instrument cluster comes on while driving
and/or an intermittent warning sounds,
immediate attention on the part of the driver
is required. As required by the traffic
situation, apply the brakes and navigate
around a possible obstacle. However, do not
drive by relying on the distance warning
function, as this will result in an emergency
braking application. This will not always
enable you to avoid a collision, especially
when traveling on varying road surface
conditions and with varying driver reaction.
Complex driving situations are not always
fully recognized by the distance warning
function. This could result in wrong or missing
distance warnings.
XActivating/deactivating: Activate or
deactivate the distance warning function in
the control system ( Y page 140).
When activated, the distance warning
function indicator Ä appears in the
multifunction display.
Hill-start assist system
GWarning!
The hill-start assist system is not designed to
function as a parking brake. It does not
prevent the vehicle from moving when parked
on an incline.
Always engage the parking brake in addition
to shifting the automatic transmission into
park position P.
On uphill grades, the hill-start assist system
maintains the pressure in the brake system
for approximately 1 second after you have
released the brake pedal. Therefore, you can
start off smoothly without the vehicle moving
immediately after releasing the brake pedal.
XDepress the brake pedal.XShift the automatic transmission into drive
position D or reverse gear R.XRelease the brake pedal.XCarefully depress the accelerator pedal.
The hill-start assist system is inactive
R when starting off on a level road or downhill
grades
R with the automatic transmission in neutral
position N
R with the parking brake engaged
R if the ESP ®
has switched off due to a
malfunction
Downhill Speed Regulation (DSR)
For information on off-road driving, see “Off-
road driving” ( Y page 262).
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The DSR is an aid for driving downhill. The
DSR regulates your vehicle’s speed when
driving downhill to the value set in the control
system (Y page 141). The steeper the
downhill gradient is, the greater the brake
application. On flat road surfaces, the DSR
brakes only slightly or not at all.
GWarning!
The Downhill Speed Regulation (DSR) is a
convenience system designed to assist the
driver during vehicle operation. The system
must be set to be appropriate for the
topographical and weather conditions
encountered which can change quickly. The
driver is and must remain at all times
responsible for the vehicle speed and for safe
brake operation.
Depending on the programmed speed, actual
vehicle speed and gradient, switching on the
DSR while driving can cause the vehicle to
slow down rapidly and you may hear a sound
which is caused by the activation of the
vehicle’s brake system through the DSR.
Sudden and unexpected deceleration can
result in loss of vehicle control, causing an
accident and/or serious personal injury to
you and others. Do not switch on the DSR in
a circumstance where rapid deceleration
could result in a loss of vehicle control.
The DSR regulates the vehicle’s speed in
automatic transmission positions D, or R.
iIn addition, make use of the engine’s
braking effect by shifting the automatic
transmission into a lower gear.
You can drive slower or faster than the set
speed at any time by braking the vehicle or
depressing the accelerator pedal.
iWhenever the DSR is switched on, the
DSR will use the programmed default
speed to regulate the vehicle’s speed. The
default speed programmed at the factory is
4 mph (Canada: 6 km/h). The default speed
can be reprogrammed using the control
system (Y page 141). The next time the
DSR is switched on, the DSR will use the
newly programmed default speed to
regulate the vehicle’s speed.
Once the DSR is switched on, you can
adjust the set speed using the cruise
control lever (Y page 145). Keep in mind
that adjusting the set speed using the
cruise control lever with the DSR switched
on will not change the programmed default
speed. If the DSR is switched off and then
switched on again, the DSR will use the
programmed default speed.
Depending on the road surface and level of
downhill grade, the DSR may not be able to
maintain the set speed. To maintain the set
speed, apply the brakes if necessary.
Switching the DSR on/off
Vehicles without enhanced off-road package
Vehicles with enhanced off-road package
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GWarning!
If the accelerator pedal is depressed while the
Downhill Speed Regulation (DSR) is activated,
the vehicle can drive faster than the
programmed set speed. You should therefore
drive downhill with particular caution as it
could otherwise lead to an accident and/or
serious injury to you or others. Keep in mind
that as soon as you remove your foot from the
accelerator pedal with the DSR switched on,
the DSR will start regulating the vehicle’s
speed including use of brakes if required.
Depending on the programmed set speed,
actual vehicle speed and gradient, the DSR
can cause the vehicle to slow down rapidly.
Sudden and unexpected deceleration can
result in loss of vehicle control, causing an
accident and/or serious personal injury to
you and others.
Switching on the DSR
The DSR can only be switched on if the vehicle
speed is below 20 mph (Canada: 30 km/h).
XPress DSR switch :.
Indicator lamp ; comes on.
The message DSR and the set speed appear
in the multifunction display.
iIf the DSR is switched on at a speed above
20 mph (Canada: 30 km/h), the message
DSR Max. Speed 20 MPH (Canada:
30 km/h) appears in the multifunction
display.
For information on how to program the set
speed while driving, see “Adjusting the DSR
speed” (Y page 157).
Switching off the DSRXPress DSR switch :.
Indicator lamp ; goes out.
The message DSR Off appears in the
multifunction display.
iAt a speed above approximately 21 mph
(Canada approximately: 35 km/h), the DSR
is automatically switched off. The message
DSR Off appears in the multifunction
display and an acoustic signal sounds. For
information on how to switch the DSR on
again, see “Switching on the DSR”
(Y page 157).
Adjusting the DSR speed
With the DSR switched on (Y page 157), the
speed setting can be changed using the
cruise control lever.
Cruise control lever
You can change the set speed between
3-10 mph (Canada: 4-18 km/h).
You can increase or reduce the set speed in
two ways.
Adjustment in 1 mph (Canada: 1 km/h)
increments
iThe set value is increased or decreased in
1 mph (Canada: 1 km/h) increments each
time you lift or depress the cruise control
lever to the resistance point.
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Increase set speed:XBriefly lift the cruise control lever up to the
resistance point in direction of arrow :.
XRelease the cruise control lever.
The vehicle speed increases in increments
of 1 mph (Canada: 1 km/h).
Reduce set speed:
XBriefly press the cruise control lever down
to the resistance point in direction of
arrow ;.
XRelease the cruise control lever.
The vehicle speed decreases in increments
of 1 mph (Canada: 1 km/h).
Each time the set speed is changed, DSR
will appear in the multifunction display and
the changed set speed is shown.
The set speed is canceled when the DSR is
switched off. If the DSR is switched on again,
the DSR will use the programmed default
speed (Y page 141).
Adjustment in 5 mph (Canada: 10 km/h)
increments
iThe set value is increased or decreased in
5 mph (Canada: 10 km/h) increments each
time you lift or depress the cruise control
lever past the resistance point.
Increase set speed:
XBriefly lift the cruise control lever up past
the resistance point in direction of
arrow :.
XRelease the cruise control lever.
The vehicle speed increases in increments
of 5 mph (Canada: 10 km/h).
Reduce set speed:
XBriefly press the cruise control lever down
past the resistance point in direction of
arrow ;.
XRelease the cruise control lever.
The vehicle speed decreases in increments
of 5 mph (Canada: 10 km/h).
Each time the set speed is changed, DSR
will appear in the multifunction display and
the changed set speed is shown.
The new speed is set and the vehicle will
accelerate or decelerate. Keep in mind that
it may take a brief moment until the vehicle
has reached the new set speed.
The set speed is canceled when the DSR is
switched off. If the DSR is switched on again,
the DSR will use the programmed default
speed (Y page 141).
Off-road driving program (Vehicles
without enhanced off-road package)
The off-road driving program is designed to
assist the driver when driving off-road in
terrain and crossing water. The off-road
driving program adjusts the engine power and
shifting of the automatic transmission to be
more suitable for the off-road use of the
vehicle. In addition, the ABS, ESP®, and 4-ETS
designed for off-road use are automatically
activated.
In the following situations you should switch
to the off-road driving program:
Rduring off-road driving
Rwhen crossing water (Y page 266)
Rwhen towing up or down on steep gradients
XSwitching on: Press switch :.
Indicator lamp ; comes on. The symbol
Ç appears in the lower multifunction
display.
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We recommend that you start out with easy
off-road travel.
Special driving features for off-road
driving
The following driving features are available for
specific kind of operation:
R Off-road ABS ( Y page 63)
R Off-road ESP ®
(Y page 65)
R Off-road 4-ETS ( Y page 64)
R Hill-start assist system ( Y page 117)
R LOW RANGE mode ( Y page 120)
R Differential locks ( Y page 121)
R Downhill Speed Regulation (DSR)
( Y page 155)
R Off-road driving program (Vehicles without
enhanced off-road package) ( Y page 158)
R Air suspension program ( Y page 159)
Off-road driving rules
R Engage the off-road driving program
( Y page 158) or LOW RANGE mode
( Y page 120) before driving under off-road
conditions.
R If necessary, activate differential locks
( Y page 121).
R Make sure you select a vehicle level
( Y page 159) appropriate to the
topographical conditions. Always make
sure the vehicle has enough ground
clearance.
R Fasten items being carried as securely as
possible ( Y page 194).
R Always navigate gradients with the engine
on and with the transmission engaged in a
gear. Switch on the DSR ( Y page 155) to
help maintain a preset speed.
! Observe the following during off-road
driving:
R Keep doors, tailgate, windows, and tilt/
sliding sunroof closed whenever driving
off-road.
R Adjust vehicle speed to condition of
terrain. The more uneven, rutty and
steeper the terrain, the lower the speed
should be. Drive through water slowly at
an even speed, avoiding a bow wave.
R Be especially careful when driving in
unknown territory. It may be necessary
to get out of the vehicle and scout the
path you intend to take.
R Watch out for obstacles, such as rocks,
holes, tree stumps and ruts.
R Before driving through water, determine
its depth.
R Do not stop vehicle while immersed in
water, and do not shut off the engine.
R In sandy soil, drive at a steady speed as
allowed by conditions. This helps
overcome the vehicle rolling resistance
and reduces the likelihood of the vehicle
sinking into the ground.
R Do not initiate jumps with the vehicle. It
interrupts the forward momentum of the
vehicle.
R Always drive onto slopes with the engine
running and the vehicle in gear.
R Do not shift automatic transmission into
neutral position N.GWarning!
Do not reduce the tire inflation pressure
before driving through sand. However, if you
do so, remember to correct the tire inflation
pressure before continuing your trip. Driving
with reduced tire inflation pressure increases
the risk of losing control of the vehicle and
rolling over.
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LOW RANGE mode (Y page 120) is
switched on.
R Set the raised level ( Y page 159).
! Check that the ruts are not too deep and
your vehicle’s clearance is sufficient.
Otherwise:
R your vehicle may be damaged
R the underbody of the vehicle may come
in contact with the ground and you may
get stuck
R Avoid high engine speeds.
R Shift automatic transmission into gear
range 1 (Y page 118).
R Drive next to the ruts rather than through
them if at all possible.
R If the ruts are too deep to drive in, drive with
one side of the vehicle on the grassy center
strip if the route permits.
Returning from off-road driving GWarning!
If you feel a sudden significant vibration or
ride disturbance, or you suspect that possible
damage to your vehicle has occurred, you
should turn on the hazard warning flashers,
carefully slow down, and drive with caution to
an area which is a safe distance from the road.
Inspect the tires and the vehicle underbody
for possible damage. If the vehicle or tires
appear unsafe, have the vehicle towed to the
nearest authorized Mercedes-Benz Center or
tire dealer for repairs.
Off-road driving increases strain on the
vehicle.
We recommend that you inspect the vehicle
for possible damage after each off-road trip.
Recognizing any damage and a subsequent
timely repair reduces the chance of a possible
breakdown or accident later on.
Proceed as follows:
R Switch off the off-road driving program
( Y page 158) or the LOW RANGE mode
( Y page 120).
R Switch off the DSR ( Y page 156).
R Set the differential locks to AUTO
( Y page 122).
R Lower the vehicle back to a level suitable
for road conditions, e.g. highway/high-
speed level ( Y page 159).
R Clean all exterior lamps and check for
possible damage.
R Clean the front and rear license plate.
R Remove excessive dirt from tires, wheels,
wheel housings, and underbody.
For instance, after driving in mud, clean the
radiator, chassis, engine, brakes, and
wheels from extreme dirt using a strong jet
of water.
R Check tires for possible damage.
R Inspect vehicle underbody, oil pan, brake
hoses, etc., as well as vehicle underbody
for possible damage.
R Check for brush or branches caught in the
underbody.
! Brush or branches could increase the
possibility of a fire, as well as cut fuel and/
or brake lines, puncture rubber bellows of
the axles or drive shafts.
R After continued operation in mud, sand,
water or other dirty conditions clean the
brake discs, wheels, brake pads and check
and clean axle joints.
R Conduct a brake test.268Driving instructionsOperation
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