
overfilling. DEF may leak if overfilled. Mercedes-
Benz offers a special disposable hose with over-
fill protection. You can obtain this from any
authorized Mercedes-Benz Center. DEF is avail- able in a variety of containers and receptacles.
Only use the disposable hose with the
Mercedes-Benz DEF refill canisters.
DEF refill bottle !
Only screw on the DEF refill bottle hand-
tight. Otherwise, the thread of the DEF refill
bottle could be damaged and DEF could leak
out. X
Unscrew the protective cap from DEF refill
bottle 0043.
X Place DEF refill bottle 0043on the filler neck as
shown and screw it on clockwise until hand-
tight.
X Press DEF refill bottle 0043towards the filler
neck.
The DEF tank is filled. This may take up to one
minute.
i When DEF refill bottle
0043is no longer
pressed, filling stops and the bottle may be
taken off again after being only partially emp-
tied.
X Release DEF refill bottle 0043.
X Turn DEF refill bottle 0043counter-clockwise
and remove it.
X Screw the protective cap onto DEF refill bot-
tle 0043 again.
DEF refill bottles are available at many gas sta-
tions or at a qualified specialist workshop. Refill
bottles without a threaded cap do not provide
overfill protection. DEF may leak if overfilled.
Mercedes Benz offers special refill bottles with a threaded seal. These are available at any author-
ized Mercedes-Benz Center. Parking
Important safety notes
G
WARNING
Flammable material such as leaves, grass or
twigs may ignite if they come into contact with hot parts of the exhaust system or exhaust
gas flow. There is a risk of fire.
Park the vehicle so that no flammable mate-
rials come into contact with parts of the vehi-cle which are hot. Take particular care not to
park on dry grassland or harvested grain
fields. G
WARNING
If you leave children unsupervised in the vehi- cle, they could set it in motion by, for example:
R release the parking brake.
R shift the automatic transmission out of the
parking position P.
R start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
! Always secure the vehicle correctly against
rolling away. Otherwise, the vehicle or its driv-
etrain could be damaged.
To ensure that the vehicle is secured against
rolling away unintentionally:
R the electric parking brake must be applied
R the transmission must be in position 005Dand
the SmartKey must be removed from the igni- tion lock
R the front wheels must be turned towards the
curb on steep uphill or downhill gradients
R the empty vehicle must be secured at the
front axle with a wheel chock or similar, for
example, on uphill or downhill gradients
R a laden vehicle must also be secured at the
rear axle with a wheel chock or similar, for
example, on uphill or downhill gradients 156
ParkingDriving and parking 

Switching off the engine
G
WARNING
The automatic transmission switches to neu-
tral position Nwhen you switch off the engine.
The vehicle may roll away. There is a risk of an
accident.
After switching off the engine, always switch
to parking position P. Prevent the parked vehi-
cle from rolling away by applying the parking
brake.
X Apply the electric parking brake.
X Shift the transmission to position 005D.
X With the SmartKey: turn the SmartKey to
position 0092in the ignition lock and remove it.
The immobilizer is activated.
X With KEYLESS-GO:
Press the Start/Stop button (Y page 135)
The engine stops and all the indicator lamps in the instrument cluster go out.
If you switch the engine off with the transmis-
sion in position 005Eor005B, the automatic trans-
mission shifts to 005Cautomatically.
If you then open the driver's or front-passenger
door, the automatic transmission shifts to 005D
automatically.
If you want the automatic transmission to
remain in neutral 005C, e.g. when having the vehi-
cle cleaned in an automatic, tow-through car
wash:
X Vehicles with a SmartKey: switch on the
ignition.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock.
X Insert the SmartKey into the ignition lock.
X Switch on the ignition.
X All vehicles: depress the brake pedal and
keep it depressed.
X Engage neutral 005C.
X Release the brake pedal.
X Release the electric parking brake.
X Switch off the ignition and leave the SmartKey
in the ignition lock.
i The engine can be switched off in an emer-
gency while the vehicle is in motion by press-
ing and holding the Start/Stop button for
three seconds. Electric parking brake
General notes G
WARNING
If you leave children unsupervised in the vehi- cle, they could set it in motion by, for example:
R release the parking brake.
R shift the automatic transmission out of the
parking position P.
R start the engine.
In addition, they may operate vehicle equip-
ment and become trapped. There is a risk of
an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle.
The function of the electric parking brake is
dependent on the on-board voltage. If the on-
board voltage is low or there is a malfunction in
the system, it may not be possible to apply the
released parking brake.
X If this is the case, only park the vehicle on
level ground and secure it to prevent it rolling
away.
X Shift the automatic transmission to position
005D.
It may not be possible to release an applied
parking brake if the on-board voltage is low or
there is a malfunction in the system. Contact a
qualified specialist workshop.
i The electric parking brake performs a func-
tion test at regular intervals while the engine
is switched off. The sounds that can be heard while this is occurring are normal. Parking
157Driving and parking Z 

Applying or releasing manually
X
To engage: push handle 0043.
When the electric parking brake is engaged,
the 0049 (USA only) or 0024(Canada only)
red indicator lamp lights up in the instrument
cluster.
i The electric parking brake can also be
applied when the SmartKey is removed.
X To release: pull handle0043.
The red 0049(USA only) or 0024(Canada
only) indicator lamp in the instrument cluster goes out.
i The electric parking brake can only be
released:
R when the SmartKey is in position 0047in the
ignition lock (Y page 135) or
R if the ignition was switched on using the
Start/Stop button
To ensure that you do not roll backwards when
pulling away on an uphill slope, engage the elec-
tric parking brake (Y page 138).
Applying automatically The electric parking brake is automatically
applied when the transmission is in position 005D
and
R the engine is switched off or
R the driver is not wearing a seat belt and the
driver's door is opened
To prevent the electric parking brake from being automatically applied, pull handle 0043.The electric parking brake is also applied auto-
matically if:
R Active Distance Assist DISTRONIC brings the
vehicle to a standstill or
R the HOLD function is keeping the vehicle sta-
tionary
R Active Parking Assist or the Parking Package
with rear view camera is keeping the vehicle
stationary
In addition, at least one of the following condi-
tions must be fulfilled:
R the engine is switched off
R the driver is not wearing a seat belt and the
driver's door is opened
R there is a system malfunction
R the power supply is insufficient
R the vehicle is stationary for a lengthy period
The red 0049(USA only) or 0024(Canada only)
indicator lamp in the instrument cluster lights
up.
The electric parking brake is not automatically
applied if the engine is switched off by the ECO
start/stop function.
Releasing automatically The electric parking brake is released automat-
ically when all of the following conditions are
fulfilled:
R The engine is running.
R The seat belt tongue is engaged in the belt
buckle.
R The transmission is in position 005Bor005E and
you depress the accelerator pedal or, on a
level surface, you shift from transmission
position 005Dto005B or005E.
R If the transmission is in position 005E, the trunk
lid must be closed.
If the seat belt tongue is not engaged in the seat belt buckle, the following conditions must be
fulfilled:
R The driver's door is closed.
R You are shifting from transmission position
005D or have previously driven at speeds
greater than 2 mph (3 km/h).
R If the transmission is in position 005E, the trunk
lid must be closed.
When the electric parking brake is released,
the 0024 indicator lamp goes out in the instru-
ment cluster. 158
ParkingDriving and parking 

X
Avoid frequent acceleration or braking.
X Have all service and maintenance work car-
ried out at the specified intervals.
Fuel consumption also increases when driving in
cold weather, in stop-start traffic and in hilly ter- rain.
Drinking and driving G
WARNING
Drinking and driving and/or taking drugs and driving are very dangerous combinations.
Even a small amount of alcohol or drugs can
affect your reflexes, perceptions and judg-
ment.
The possibility of a serious or even fatal acci-
dent is greatly increased when you drink or
take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or tak-
ing drugs.
Emission control G
WARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
Certain engine systems are designed to keep
the level of poisonous components in exhaust
fumes within legal limits.
These systems only work at peak efficiency if
they are serviced exactly in accordance with the
manufacturer's specifications. Always have
work on the engine carried out at a qualified
specialist workshop. Mercedes-Benz recom-
mends that you use an authorized Mercedes-
Benz Center for this purpose. In particular, work
relevant to safety or on safety-related systems
must be carried out at a qualified specialist
workshop.
The engine settings must not be changed under any circumstances. Furthermore, all specific
service work must be carried out at regular
intervals and in accordance with the Mercedes-
Benz service requirements. You can obtain current information concerning
the servicing of your vehicle at any time from a
qualified specialist workshop. This could be an
overview of the maintenance work or any addi-
tional maintenance work, for example. ECO display
The ECO display shows you how economical
your driving style is. The ECO display assists you
in achieving the most economical driving style
for the selected settings and prevailing condi-
tions. Your driving style can significantly influ-
ence the vehicle's consumption. 0043
Acceleration
0044 Coasting
0087 Constant
0085 Additional range achieved
Range 0085is shown under Bonus
Bonus fr. fr.Start
Start and
represents the additional range achieved since
the beginning of the journey as a result of an
adapted driving style.
If the fuel level has dropped into the reserve
range, the Reserve Fuel
Reserve Fuel message is shown in
the multifunction display instead of range 0085.
The 00B6 warning lamp in the instrument cluster
also lights up (Y page 283).160
Driving tipsDriving an
d parking 

This helps you to avoid overheating the
brakes and wearing them out excessively.
When you take advantage of engine braking, a
drive wheel may not turn for some time, e.g.
on a slippery road surface. This could cause
damage to the drive train. This type of damage is not covered by the Mercedes-Benz war-
ranty.
Do not depress the brake pedal continuously
while the vehicle is in motion, e.g. causing the
brakes to rub by constantly applying light pres-
sure to the pedal. This results in excessive and
premature wear to the brake pads.
Use the left-hand steering wheel paddle shifter
to shift into a lower gear in good time on long
and steep downhill gradients. This is especially
important if the vehicle is laden.
This also applies if you have activated cruise
control, the limiter or Active Distance Assist
DISTRONIC.
This will use the braking effect of the engine, so
that less braking will be required to maintain the
speed. This relieves the load on the brake sys-
tem and prevents the brakes from overheating
and wearing too quickly.
Heavy and light loads 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. Never
depress the brake pedal and the accelerator
pedal at the same time.
! Depressing the brake pedal constantly
results in excessive and premature wear to
the brake pads.
If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately. Drive on for a short while. This allows the airflow to
cool the brakes more quickly.
Wet roads If you have driven for a long time in heavy rain
without braking, there may be a delayed reac-
tion from the brakes when braking for the first time. This may also occur after the vehicle has
been washed or driven through deep water.
You then have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehicle
washed, brake firmly while paying attention to
the traffic conditions. This will warm up the
brake discs, thereby drying them more quickly
and protecting them against corrosion.
Limited braking performance on salt-
treated roads If you drive on salted roads, a layer of salt resi-
due may form on the brake discs and brake
pads. This can result in a significantly longer
braking distance.
R Brake occasionally to remove any possible
salt residue. Make sure that you do not
endanger other road users when doing so.
R Carefully depress the brake pedal and the
beginning and end of a journey.
R Maintain a greater distance to the vehicle
ahead.
Servicing the brakes !
The brake fluid level may be too low, if:
R if the red brake warning lamp lights up in
the instrument cluster and
R you hear a warning tone while the engine is
running
Observe additional warning messages in the
multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immediately.
Consult a qualified specialist workshop to
arrange this.
! A function or performance test should only
be carried out on a 2-axle dynamometer. If
you wish to operate the vehicle on such a
dynamometer, please consult a qualified spe- cialist workshop in advance. You could oth-
erwise damage the drive train or the brake
system.
! Because ESP ®
is an automatic system, the
engine and ignition must be switched off
(SmartKey in position 0or 1or Start/Stop
button in position 0or 1) when the electric 162
Driving tipsDriving and parking 

Familiarize yourself with the characteristics of
your vehicle and the gear shift operation before
driving through difficult terrain.
The following driving systems are specially
adapted to off-road driving:
R The Off-road drive program (vehicles without
Off-Road Engineering package)
(Y page 215)
R Off-road andOff-road Plus drive programs
(vehicles with Off-Road Engineering package) (Y page 216)
R LOW RANGE off-road gear (vehicles with the
Off-Road Engineering package)
(Y page 217)
R Differential lock (vehicles with the Off-Road
Engineering package) (Y page 217)
R Off-road ABS (Y page 67)
R Off-road 4ETS (Y page 70)
R Off-road ESP ®
(Y page 72)
R AIRMATIC package (vehicle level)
(Y page 183)
R DSR (Downhill Speed Regulation)
(Y page 214)
Observe the following notes:
R Stop the vehicle before starting to drive along
an off-road route. If necessary, select the off- road program (Y page 216) or shift to the
LOW RANGE off-road gear (Y page 217).
R Select a vehicle level that is suitable for the
terrain. To avoid damaging the vehicle, make
sure there is always sufficient ground clear-
ance.
R Check that items of luggage and loads are
stowed safely and are well secured
(Y page 299).
R Always keep the engine running and in gear
when driving on a downhill gradient. Activate
DSR (Y page 214).
R Always keep the engine running and in gear
when driving down an incline.
R Adapt your speed to the terrain. The rougher,
steeper or more ruts on the terrain, the slower your speed should be.
R Do not jump with the vehicle as this will inter-
rupt the vehicle's propulsion.
R Drive with extreme care on unfamiliar off-road
routes where visibility is poor. For safety rea- sons, get out of the vehicle first and survey
the off-road route. R
Look out for obstacles, such as rocks, holes,
tree stumps and furrows.
R Take care when turning on an uphill or down-
hill slope or when driving across a slope. The
vehicle could otherwise tip over.
R Always keep the doors, the tailgate, the side
windows and the sliding sunroof closed while
the vehicle is in motion.
R Do not shift the automatic transmission to
position 005C.
R Observe the notes on off-road fording
(Y page 164).
i Information about retrofitting special all-ter-
rain tires is available from any qualified spe-
cialist workshop.
i Do not use the HOLD function when driving
off-road, on steep uphill or downhill gradients
or on slippery or loose surfaces. The HOLD
function cannot hold the vehicle on such sur- faces.
Checklist before driving off-road !
If the engine oil warning lamp lights up while
the vehicle is in motion, stop the vehicle in a
safe place as soon as possible. Check the
engine oil level. The engine oil warning lamp
warning must not be ignored. Continuing the
journey while the symbol is displayed could
lead to engine damage.
X Engine oil level: check the engine oil level
and add oil if necessary.
When driving on steep gradients, the engine
oil level must be sufficiently high to ensure a
correct oil supply in the vehicle.
X DEF tank (BlueTEC vehicles): check the
level and add if necessary (Y page 153).
X Tire-changing tool kit: check that the jack is
working and make sure you have the lug
wrench, a robust tow cable and a folding
spade in the vehicle.
X Wheels and tires: check the tread depth and
pressure of the tires.
X Check for damage and remove any foreign
objects, e.g. small stones, from the wheels/
tires.
X Replace any missing valve caps.
X Replace dented or damaged wheels.
X Rims: dented or bent rims can result in a loss
of tire pressure and damage the tire bead. 166
Driving tipsDriving and parking 

Driving with Active Distance Assist
DISTRONIC Pulling away and driving
X If you want to pull away with Active Dis-
tance Assist DISTRONIC: remove your foot
from the brake pedal.
X Briefly pull the cruise control lever towards
you 0085.
or
X Accelerate briefly.
Your vehicle pulls away and adapts its speed
to that of the vehicle in front. If no vehicle is
detected in front, your vehicle accelerates to
the set speed.
The vehicle can also pull away when it is facing
an unidentified obstacle or is driving on a differ-
ent line from another vehicle. The vehicle then
brakes automatically.
If there is no vehicle in front, Active Distance
Assist DISTRONIC operates in the same way as cruise control.
If Active Distance Assist DISTRONIC detects a
slower-moving vehicle in front, it brakes your
vehicle. In this way, the distance you have selec-
ted is maintained.
If Active Distance Assist DISTRONIC detects a
faster-moving vehicle in front, it increases the
driving speed. However, the vehicle is only
accelerated up to the speed you have stored.
Selecting the drive programActive Distance Assist DISTRONIC supports a
sporty driving style if you have selected the
Sport orSport Plus drive program
(Y page 146). Acceleration behind the vehicle in
front or to the set speed is then noticeably more
dynamic. If you have selected the Comfortdrive
program, the vehicle accelerates more gently.
This setting is recommended in stop-and-start
traffic.
Changing lanes If you change to the overtaking lane, Active Dis-
tance Assist DISTRONIC helps you if:
R you are driving faster than 45 mph (70 km/h)
R you switch on the appropriate turn signal
R Active Distance Assist DISTRONIC does not
currently detect a danger of collision
If these conditions are fulfilled, your vehicle is
accelerated. Acceleration will be interrupted if
changing lanes takes too long or if the distance between your vehicle and the vehicle in front
becomes too small.
i When you change lanes, Active Distance
Assist DISTRONIC monitors the right lane (in
left-side traffic) or the left lane (in right-side
traffic).
Stopping G
WARNING
If you leave the driver's seat when the vehicle is only being braked by Active Distance Assist
DISTRONIC, it could roll away:
R if there is a malfunction in the system or in
the voltage supply
R if Active Distance Assist DISTRONIC is
deactivated using the cruise control lever,
for example by a vehicle occupant or from
outside the vehicle
R if the electrical system in the engine com-
partment, the battery or the fuses are tam-
pered with
R if the battery is disconnected
R if the vehicle is accelerated, e.g. by a vehi-
cle occupant
There is a risk of an accident.
Always deactivate Active Distance Assist
DISTRONIC and secure the vehicle against
rolling away before you leave it.
If Active Distance Assist DISTRONIC detects
that the vehicle in front is stopping, it brakes
your vehicle until it is stationary.
Once your vehicle is stationary, it remains sta-
tionary and you do not need to depress the
brake.
After a time, the electric parking brake secures
the vehicle and relieves the service brake.
Depending on the specified minimum distance,
your vehicle will come to a standstill at a suffi-
cient distance behind the vehicle in front. The
specified minimum distance is set using the
control on the cruise control lever. 174
Driving systemsDriving and pa
rking 

When Active Distance Assist DISTRONIC is acti-
vated and the vehicle is at a standstill, the trans-
mission will be shifted automatically to position
005D if:
R the driver's door is open and the driver's seat
belt is unfastened.
R the engine is switched off, unless it is auto-
matically switched off by the ECO start/stop
function.
When Active Distance Assist DISTRONIC is acti-
vated and the vehicle is at a standstill, the elec-
tric parking brake will secure the vehicle auto-
matically if:
R a system malfunction occurs
R the power supply is not sufficient
On steep uphill or downhill inclines or if there is a malfunction, the transmission may also be
automatically shifted into position 005D.
Setting a speed Keep in mind that it may take a brief moment
until the vehicle has accelerated or braked to
the speed set.
X Press the cruise control lever up 0043for a
higher speed or down 0083for a lower speed
X To adjust the set speed in 1 mph incre-
ments (1 km/h increments):
briefly press
the cruise control lever up 0043or down 0044to
the pressure point.
Every time the cruise control lever is pressed
up 0043 or down 0044the last speed stored is
increased or reduced.
X To adjust the set speed in 5 mph incre-
ments (10 km/h increments): briefly press
the cruise control lever up 0043or down 0044
beyond the pressure point.
Every time the cruise control lever is pressed
up 0043 or down 0044, the last speed stored is
increased or reduced.
i If you accelerate to overtake, Active Dis-
tance Assist DISTRONIC adjusts the vehicle's
speed to the last speed stored after you have
finished overtaking. Setting a specified minimum distance You can set the specified minimum distance for
Active Distance Assist DISTRONIC by varying
the time span between one and two seconds.
This determines the distance that Active Dis-
tance Assist DISTRONIC is to maintain from the
vehicle in front, depending on the road speed.
You can see this distance in the multifunction
display (Y page 176).
X To increase: turn control0044in direction 0087.
Active Distance Assist DISTRONIC then main-
tains a greater distance between your vehicle and the vehicle in front.
X To decrease: turn control0044in direction 0043.
Active Distance Assist DISTRONIC then main-
tains a shorter distance between your vehicle
and the vehicle in front.
i Make sure that you maintain a sufficiently
safe distance from the vehicle in front. Adjust
the distance to the vehicle in front if neces-
sary.
Deactivating Active Distance Assist
DISTRONIC Driving systems
175Driving and parking Z