2014 MERCEDES-BENZ M-Class Owner's Manual

surface and tire conditions. Select a set
speed suitable for the prevailing conditions
and when necessary, apply the brakes
manually. G
WARNING
If the speed driven and the set speed deviate
and you activate DSR on a slippery road
surface, the wheels may lose traction.Ift he
wheels lose traction. the vehicle can no longer
be steered. There is an increased danger of
skidding and accidents.
Never activate DSR on slippery road surfaces.
Activating DSR G
WARNING
If you drive faster than the set speed and
activate DSR, the vehicle will decelerate on
downhill gradients. If you do not know the set
speed, the vehicle could decelerate
unexpectedly. There is a risk of an accident.
Decelerate the vehicle to the set speed before
activating DSR. If you do not know what the
stored set speed is, store the desired set
speed again. Example: vehicles with the ON&OFFROAD package
0002 DSR button
0003 DSR indicator lamp
X Press button 0002.
Indicator lamp 0003lights up.
The 0001 DSR symbol appears in the
multifunction display.
You can only activate DSR when driving at
speeds below 25 mph (40 km/h). If the current vehicle speed is too high, the
0001
DSR symbol appears in the
multifunction display with the Max. Speed 25 mph message (Canada:
40 km/h ).
i You cannot activate DSR if the SPORT on-
road program is activated. The 0001DSR
symbol and the Not in Drive Program SPORT message then appearint
he
multifunction display.
Deactivating DSR
X Press button 0002.
Indicator lamp 0003goes out.
The 0001 DSR symbol appears in the
multifunction display with the Off message.
DSR switches off automatically if you drive
faster than 28 mph (Canada: 45 km/h). The
0001 DSR symbol appears in the
multifunction display with the Off message.
The status indicator in the multifunction
display goes out. You also hear a warning. On
vehicles with the ON&OFFROAD package, if
you select a different on-road/off-road
program, DSR is also deactivated.
Changing the set speed Driving systems
247Driving and parking Z

X
To increase or decrease in 1 mph
increments (Canada: 1 km/h
increments): briefly press the cruise
control lever up 0002for a highe rset speed
or down 0003for a lower set speed.
The set speed appears in the multifunction
display with the 0001DSR symbol. It is also
displayed in status indicator 0023.
When DSR is activated, you can change the
set speed to a value between 1mph and
11 mph (Canada: between 2 km/h and
18 km/h).
i The DSR set speed is always changed in
1 mph increments (Canada: 1 km/h
increments). This is regardless of whether
you press the cruise control lever to or
beyond the pressure point.
Off-road programs (vehicles with the
ON&OFFROAD package) General notes
The off-road programs assist you in driving
off-road. The engine’s performance
characteristics and the gearshifting
characteristics of the automatic transmission
are adapted for this purpose. ABS, ESP
®
and
4ET Sprograms especially adapted to off-road
driving are activated. An accelerator pedal
curve suitable for the terrain is selected, i.e.
the accelerator pedal must be depressed
further to accelerate.
Do not use the off-road programs on roads
that are snow-covered or icy or if you have
mounted snow chains on yourv ehicle.
For information on driving off-road, see
(Y page 187).
The following program messages are shown
in the multifunction display until the
applicable vehicle level is set. Up to off-road
level 2, you can hide the program messages
using the 0007or the 000Bbutton on the
multifunction steering wheel. Off-road program 1
X
Selector wheel 0002 engaged:
briefly press
selector wheel 0002.
Selector wheel 0002extends.
X To select: turn selector wheel 0002until
indicator lamp 0003comes on.
Off-road indicator 0023appears in the
multifunction display.
Off-road level 1 is set to +1.2 in (+30 mm)
above the highway level.
If you drive at a speed above 70 mph
(110 km/h), off-road program 1 switches to
AUTO program.
Select off-road program 1 for gentle off-road
terrain, e.g. for gravel or sand surfaces or
tracks. The engine's torque is restricted to a
limited degree and the drive wheels can spin.
The spinning wheels produce acutting effect
for better traction.
You can only activate off-road program 1
when driving at speeds below 60 mph
(100 km/h). The Drive Program OFFROAD 1 Max Speed 60 mph (100 km/h ) message
appears in the multifunction display. 248
Driving systemsDriving and pa
rking

Off-road program 2
X
Selector wheel 0002 engaged:
briefly press
selector wheel 0002.
Selector wheel 0002extends.
X To select: turn selector wheel 0002until
indicator lamp 0003comes on.
Off-road indicator 0023appears in the
multifunction display.
R Off-road level 1 is set to +2.4 in
(+60 mm) above the highway level.
R DSR is switched on.
R The differential lock is closed.
Off-road program 2automatically switches to
off-road program 1 if you drive faster than
30 mph (45 km/h).
Select off-road program 2 for rough terrain,
e.g. for steep and/o rrough terrain or driving
on rocky terrain.
i Your vehicle has an automatically
activated differential lock for the transfer
case. It controls the balance between the
front and rear axles. The differential lock improves the vehicle’s
traction. 4ETS (Y
page 71) controls the
balance between both wheels on an axle.
You can only activate off-road program 2
when driving at speeds below 25 mph
(40 km/h).
LOW RANGE off-road gear (vehicles
with the ON&OFFROAD package) Important safety notes
G
WARNING
If you select the LOW RANGE off-road gear on
a slippery road surface, the wheels could lose
traction:
R if you remove your foot from the
accelerator pedal when driving
R if off road ABS intervenes when braking
If the wheels lose traction. the vehicle can no
longer be steered. There is an increased
danger of skidding and accidents.
Never select the LOW RANGE off-road gear
when driving on slippery road surfaces. G
WARNING
If you do not wait for the transfer case gear
change process to complete, the transfer
case could remain in the neutral position. The
power transmission to the driven wheels is
then interrupted. There is a danger of the
vehicle rolling away unintentionally. There is
a risk of an accident.
Wait until the transfer case shift process is
completed.
Do not turn off the engine while changing gear
and do not shift the automatic transmission
to another position. Driving systems
249Driving and parking Z

General notes
0002
LOW RANGE off-road gear button
0003 LOW RANGE off-road gear indicator lamp HIGH RANGE
Positio
nfor all normal on-
road driving conditions LOW RANGE
Off-road position for
driving off-road and
fording
The transmission ratio
between the engine and
wheels is only
approximately one third of
that in the HIGH RANGE
road position. Drive torque
is thus proportionately
higher.
Do not use LOW RANGE:
R
on slippery road
surfaces, e.g. in the case
of slush
R on snow or ice-covered
roads
R if you have mounted
snow chains to your
vehicle The LOW RANGE off-road gear assists you in
driving off-road and when fording. When LOW
RANGE is engaged, the engine’s performance
characteristics and the gearshifting
characteristics of the automatic transmission
are adapted for this purpose. Further information about "Driving off-road"
(Y
page 187). You will find information about
driving safety systems in conjunction with
LOW RANGE in the "Safety" section
(Y page 66).
From HIGH RANGE to LOW RANGE
! Only change from LOW RANGE to HIGH
RANGE if:
R the engine is running.
R the transmission is in position N
R you are driving at a speed below
40 km/h
X Press LOW RANGE button 0002.
Indicator lamp 0003flashes.
When the gear change is complete,
indicator lamp 0003lights up. LOW RANGE
indicator appears in the multifunction
display and in the status indicator.
While indicator lamp 0003is flashing, you can
cancel the gear change by pressing LOW
RANGE button 0002again.
i You cannot activate LOW RANGE if the
SPORT on-road program is activated. The
LOW RANGE Not in Drive Program SPORT message then appears in the
multifunction display.
From LOW RANGE to HIGH RANGE
! Only change from LOW RANGE to HIGH
RANGE if:
R the engine is running.
R the transmission is in position N
R you are driving at a speed below
70 km/h
X Press LOW RANGE button 0002.
Indicator lamp 0003flashes.
When the gear change is complete,
indicator lamp 0003goes out. In the
multifunction display, the LOW RANGE Off message appears and status indicator
0023
goes out. 250
Driving systemsDriving and parking

While indicato
rlamp 0003is flashing, you can
cancel the gear change by pressing LOW
RANGE button 0002again. Driving systems
251Driving and parking Z

Messages in the multifunction display
If a gearc
hange process has not been successful, the following messages may be displayed
in the multifunction display: Display messages Possible causes/consequences and
0001 Solutions
LOW RANGE Max.
Speed 40 km/h You have been driving faster than 40 km/h. Additionally, the
indicator lamp on the button in the center console blinks.
X
Drive more slowly to carry out the gear change process. LOW RANGE Shift to
Position N Briefly The transmission is in position
Dand you are driving at below
40 km/h.
X Shift the transmission to Nto complete the gear change
process. LOW RANGE Shifting
Canceled Please
Reactivate The gear change process was not carried out.
X
Ensure that all gear change conditions are fulfilled and carry out
the gear change process again. LOW RANGE Stop
Apply Parking Brake Aw
arning tone also sounds. The gear change proces shas no tbeen
completed. LOW RANGE is in the neutral position .There is no
connection between the engine and the drive wheels.
! Do not drive any further. You could otherwise damage the
vehicle's drive train.
X Stop the vehicle. Take into account the road and traffic
conditions when doing this.
X Depress the electric parking brake (Y page 180).
X Carry out the gear change process again.
If the gear change process has been carried out, the LOW RANGE
Stop Apply Parking Brake message disappears.
ON&OFFROAD menu in the COMAND
display (vehicles with the
ON&OFFROAD package) You can display some driving systems, driving
programs and additional information in the
COMAND display.
X Make sure that the SmartKey is in position
2in the ignition lock.
X Make sure that COMAND is activated, see
the separate COMAND operating
instructions.
X Press function button 0002.
The corresponding displays appearint he
COMAND display:
R level control
R steering angle
R vehicle's angle of inclination 252
Driving systemsDriving and parking

R
uphill or downhill gradien tinpercentage
R on-road/off-road program selected
R condition of the differential lock for the
transfer case
R the LOW RANGE off-road gear is selected
R condition of the LOW RANGE off-road
gear
R the on-road trailer program is selected Towing
atrailer Notes on towing
atrailer
Important safety notes G
WARNING
If you install a ball coupling other tha nthe one
delivered with the vehicle, the trailer tow hitch
and the rear axle may be overloaded. This
applies especially if the ball coupling in
question is longer or angled differently. This
could seriously impair the driving
characteristics and the trailer can come
loose. There is a risk of an accident.
Only install the ball coupling delivered with
the vehicle or a ball coupling that is designed
to meet your trailer towing requirements. Do
not modify the ball coupling or the trailer tow
hitch. G
WARNING
If the ball coupling is not installed correctly or
not secured with the bolt provided and the
corresponding spring cotter, the trailer may
come loose. There is a risk of an accident.
Always install and secure the ball coupling as
described. Before every journey, ensure that
the ball coupling is secured with the bolt and
the corresponding spring cotter. G
WARNING
If you rest your foot on the brake pedal while
driving, the braking system can overheat. This
increases the stopping distance and can even cause the braking system to fail. There is a
risk of an accident.
Never use the brake pedal as a footrest.N
ever
depress the brake pedal and the accelerator
pedal at the same time. G
WARNING
When the vehicle/trailer combination begins
to lurch, you could lose control of it. The
vehicle/trailer combination could even
rollover. There is a risk of an accident.
On no account should you attempt to
straighten up the vehicle/trailer combination
by increasing the speed. Reduce vehicle
speed and do not countersteer .Apply the
brake as necessary.
! Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
Please observe the manufacturer's operating
instructions for the trailer coupling if a
detachable trailer coupling is used.
Couple and uncouple the trailer carefully. If
you do not couple the trailer to the towing
vehicle correctly, the trailer could become
detached.
Make sure that the following values are not
exceeded:
R the permissible trailer drawbar noseweight
R the permissible trailer load
R the permissible rear axle load of the towing
vehicle
R the maximum permissible gross vehicle
weight of both the towing vehicle and the
trailer
The applicable permissible values, which
must not be exceeded, can be found:
R in the vehicle documents
R on the identification plates of the trailer tow
hitch, the trailer and the vehicle
If the values differ, the lowest value applies.
You will find the values approved by the
manufacturer on the vehicle identification Towing
atrailer
253Driving an d parking Z

plates and those for the towing vehicle under
"Technical data" (Y
page 456).
When towing a trailer, your vehicle's handling
characteristics will be differen tincomparison
with when driving without atrailer.
The vehicle/trailer combination:
R is heavier
R is restricted in its acceleration and
gradient-climbing capability
R has an increased braking distance
R is affected more by strong crosswinds
R demands more sensitive steering
R has a larger turning radius
This could impair the handling
characteristics.
When towing a trailer, always adjust your
speed to the current road and weather
conditions. Do not exceed the maximum
permissible speed for yourv ehicle/trailer
combination.
General notes R
Do not exceed the legally prescribed
maximum speed for vehicle/trailer
combinations in the relevant country.
This lowers the risk of an accident.
R Only install an approved trailer coupling on
your vehicle.
Further information on availability and on
installation is available from any authorized
Mercedes-Benz Center.
R The bumpers of your vehicle are not
suitable for installing detachable trailer
couplings.
R Do not install hired trailer couplings or
other detachable trailer couplings on the
bumpers of your vehicle.
R If you no longer need the ball coupling,
remove it from the ball coupling recess.
This will reduce the risk of damage to the
ball coupling.
i When towing a trailer, set the tire
pressure on the rear axle of the towing vehicle for a maximum load; see the tire
pressure table in the fuel filler flap
(Y
page 419).
Please note that when towing a trailer,
PARKTRONIC ( Ypage 213) and Blind Spot
Assist (Y page 233) are only available with
limitations, or not at all.
i On vehicles without level control, the
height of the ball coupling will alter
according to the load placed on the vehicle.
If necessary, use a trailer with a height-
adjustable drawbar.
You will find installing dimensions and loads
under "Technical data" (Y page 455).
Driving tips i
Observe the information on ESP ®
trailer
stabilization (Y page 73) and on pulling
away with a trailer (Y page 160).
The maximum permissible speed for vehicle/
trailer combinations depends on the type of
trailer. Before beginning the journey, check
the trailer's documents to see what the
maximum permissible speed is. Observe the
legally prescribed maximum speed in the
relevant country.
For certain Mercedes-Benzv ehicles, the
maximum permissible rear axle load is
increased when towing a trailer. See
"Technical data" to find out whether this
applies to your vehicle (Y page 456). If you
utilize any of the added maximum rear axle
load when towing a trailer, the vehicle/trailer
combination may not exceed a maximum
speed of 60 mph (100 km/h) for reasons
concerning the operating permit .This also
applies in countries in which the permissible
maximum speed for vehicle/trailer
combinations is above 60 mph (100 km/h).
When towing a trailer, your vehicle's handling
characteristics will be different in comparison
with when driving without atrailer.
Use the left-hand paddle shifter to shift into
a lower gearing ood time on long and steep
downhill gradients. 254
Towing
atrailerDriving an d parking