
SmartKey with KEYLESS-GO
X
Move locking tab : in the direction of
arrow.
X Slide mechanical key ; out of the housing.
Unlocking the driver’s door X
Insert mechanical key ; into the driver’s
door lock.
X Turn mechanical key ; counterclockwise
to position 1.
X Pull the door handle past the resistance
point until the locking knob moves up.
The driver’s door is unlocked.
X Pull the door handle once more to open the
driver’s door.
X Turn mechanical key ; back and remove
it from the driver’s door lock. Locking the vehicle
If you cannot lock the vehicle with the
SmartKey or with KEYLESS-GO, lock it as
follows:
X Close the front passenger door, the right
rear door, and the tailgate.
X Open the driver’s door and the rear left
door.
X Press the central locking switch
(Y page 74).
The locking knobs of the front passenger
door and the rear doors move down.
X If the vehicle battery is disconnected or
drained: Press down the locking knobs on
the front passenger door and the rear
doors.
X Exit the vehicle.
X Close the driver’s door.
X Enter the vehicle through the rear left door.
X Press down the locking knob of the driver’s
door.
! To prevent inadvertent lockout, make
sure to have the SmartKey with you before
proceeding with the next step. The next
step will lock the vehicle.
X Exit the vehicle.
X Close the rear left door.
The vehicle is locked.
i This procedure does not arm the anti-
theft alarm system, nor does it lock the fuel
filler flap. Fuel filler flap
G
Warning!
Avoid contact with the vehicle walls as they
may contain sharp edges. Otherwise, you
could injure yourself while releasing the fuel
filler flap. Unlocking/locking manually
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have the batteries replaced at an authorized
Mercedes-Benz Center.
G
Warning!
Batteries contain poisonous and corrosive
substances. Therefore, keep the batteries out
of reach of children.
If a battery is swallowed, seek medical help
immediately. G
Warning!
SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. Check with
your local government’s disposal guidelines.
California residents, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Batteries contain materials that can harm the
environment if disposed of improperly.
Recycling of batteries is the preferred method
of disposal. Many states (USA only) or
provinces (Canada only) require sellers of
batteries to accept old batteries for recycling.
When inserting the batteries, make sure they
are clean and free of lint.
When replacing batteries, always replace
both batteries.
i The required replacement batteries are
available at any authorized Mercedes-Benz
Center.
Replacement batteries: Lithium, type
CR 2025 or equivalent.
X Remove the mechanical key from the
SmartKey (Y page 308). SmartKey
X
Press mechanical key ; into the SmartKey
opening until battery compartment
cover : opens. Do not keep the cover
shut. X
Remove the battery compartment cover.
X Pat the SmartKey against the palm of your
hand until battery = falls out.
X Insert the new battery with the positive
terminal (+) facing up. Use a lint-free cloth.
X Insert the tabs of the battery compartment
cover into the housing and press the cover
closed.
X Slide mechanical key : back into the
SmartKey.
X Check the operation of the SmartKey. Replacing SmartKey batteries
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SmartKey with KEYLESS-GO
X
Insert mechanical key : into opening.
X Press mechanical key : in direction of
arrow.
Battery compartment ; is unlatched.
X Pull battery compartment ; out of the
SmartKey housing. X
Pull out batteries =.
X Insert new batteries = under contact
springs ? with the positive terminal (+)
side facing up.
X Return battery compartment ; into
SmartKey housing until it locks into place.
X Slide mechanical key : back into the
SmartKey.
X Check the operation of the SmartKey as
well as the KEYLESS-GO function. Replacing bulbs
Safety notes
Safe vehicle operation depends on proper
exterior lighting and signaling to a large
degree.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. Contact an
authorized Mercedes-Benz Center for
headlamp adjustment. G
Warning!
Bulbs and bulb sockets can be very hot. Allow
the lamp to cool down before changing a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas. A
bulb can explode if you
R touch or move it when hot
R drop the bulb
R scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
i Since replacing bulbs is a technically
highly demanding process, we recommend
to have them replaced at an authorized
Mercedes-Benz Center.
i If the headlamps or front fog lamps are
fogged up on the inside as a result of high
humidity, driving the vehicle a distance with
the lights on should clear up the fogging. 312
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X
Turn AdBlue ®
filler cap ?
counterclockwise and open it.
Filler cap ? is tethered with a plastic strap. X
Pull dust cap off of AdBlue ®
refill container
A.
X Place AdBlue ®
refill container A on the
filler neck as illustrated and tighten it
moderately (hand-tight) by turning it
clockwise.
! Make sure to tighten the AdBlue ®
refill
container only moderately, i.e. hand-tight,
as you could otherwise damage it.
X Push AdBlue ®
refill container A down.
The AdBlue ®
tank is filled. This may take up
to 1 minute.
i When you stop pushing the AdBlue ®
refill
container down, the filling process is
stopped and you can remove the refill
container. X
Release AdBlue ®
refill container A.
X Turn AdBlue ®
refill container A
counterclockwise and remove it.
X Place AdBlue ®
filler cap ? (Y page 332) on
filler neck and turn it clockwise. X
Place AdBlue ®
filler cap cover : as
illustrated and turn it clockwise to its stop.
X Place wheel wrench ; and reversible
ratchet for jack = back in the space
underneath the cargo compartment floor.
X Lower cargo compartment floor.
X Close the tailgate.
X Drive the vehicle at a speed of at least
10 mph (16 km/h).
The message Check Additive See
Operator’s Manual disappears after
approximately 1 minute.
i If the message Check Additive See
Operator’s Manual still appears in the
multifunction display, refill with one more
container of AdBlue ®
.
i Have the AdBlue ®
level checked and, if
necessary, filled completely afterward at
an authorized Mercedes-Benz Center. Battery
Safety notes
A battery should always be sufficiently
charged in order to achieve its rated service Battery
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life. Refer to Maintenance Booklet for battery
maintenance intervals.
If you use your vehicle mostly for short-
distance trips, you will need to have the
battery charge checked more frequently.
When replacing a battery, always use a
battery approved by Mercedes-Benz.
If you do not intend to operate your vehicle
for an extended period of time, contact an
authorized Mercedes-Benz Center about
steps you need to observe.
G
Warning!
Observe all safety instructions and
precautions when handling automotive
batteries.Risk of explosion.
Fire, open flames and
smoking are prohibited
when handling batteries.
Avoid creating sparks.
Battery acid is caustic. Do
not allow it to come into
contact with skin, eyes or
clothing.
Wear suitable protective
clothing, especially gloves,
apron and faceguard.
Wear eye protection.
Rinse any acid spills
immediately with clear
water. Contact a physician
if necessary.
Keep children away.
Follow the instructions in
this Operator’s Manual.
A battery contains materials that can harm
the environment if disposed of improperly. A
large 12 V storage battery contains lead. Recycling of the battery is the preferred
method of disposal. Many states (USA only)
or provinces (Canada only) require sellers of
batteries to accept the old battery for
recycling.
G
Warning!
Failure to follow these instructions can result
in severe injury or death.
Never lean over batteries while connecting.
You might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking etc.
G Warning!
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof batteries only to avoid the risk
of acid burns in the event of an accident.
Take care that you do not become statically
charged, e.g. by wearing synthetic clothing or
rubbing against textiles. For this reason, you
also should not pull or push the battery over
carpets or other synthetic materials.
Never touch the battery first. First touch the
outside body of the vehicle in order to release
any possible electrostatic charges.
Do not rub the battery with rags or cloths. The
battery could explode if touched due to
electrostatic charge or due to spark
formation.
! The battery is a
Valve-Regulated Lead
Acid (VRLA) battery, also referred to as
“fleece” battery.
Such batteries do not require topping-up of
the electrolyte level. VRLA batteries
therefore do not have cell caps and the
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battery cover is non-removable. Do not
attempt to open the battery as otherwise
the battery will be damaged.
VRLA
batteries do not require topping-up of
the electrolyte level. They cannot be
opened to check the electrolyte level.
However, the battery condition must be
checked periodically by performing a
battery conductance test. Refer to
Maintenance Booklet for battery condition
testing intervals.
The factory-equipped battery may only be
replaced with a battery that
R has the same security features
R is of identical size
R is of identical voltage
R is of identical capacity
! As any other battery, the battery may
discharge if you do not operate the vehicle
for an extended period of time. Have the
battery disconnected at a qualified
workshop or an authorized Mercedes-Benz
Center in such a case. You may also
connect an accessory battery charge unit
expressly approved by Mercedes-Benz for
your vehicle model to maintain the battery
charge. Contact an authorized Mercedes-
Benz Center for further information.
The battery, the battery ventilation hose
and the lateral plug must always be
securely installed when the vehicle is in
operation.
! Never loosen or detach battery terminal
clamps while the engine is running or the
SmartKey is in the starter switch or
KEYLESS-GO button is in position 1.
Otherwise the alternator and other
electronic components could be severely
damaged.
Have the battery checked regularly at an
authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for
maintenance intervals or contact an authorized Mercedes-Benz Center for
further information.
i After battery power was interrupted, do
the following:
R Set the clock
(Y page 133).
Vehicles with COMAND system with
navigation module: Time and date are set
automatically.
R Synchronize the door windows
(Y page 107).
R Synchronize the power tilt/sliding
sunroof (Y page 183).
R Synchronize the power tilt/sliding panel
(Y page 186).
R Synchronize the exterior rear view
mirrors (Y page 96). Charging the battery
G
Warning!
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during
charging and could cause an explosion that
may
result in personal injury, paint damage or
corrosion.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available. It permits the charging of the
battery in its installed position. Contact an
authorized Mercedes-Benz Center for
information and availability.
Charge battery in accordance with the
separate instructions for the accessory
battery charger.
Have the battery charged at an authorized
Mercedes-Benz Center. If you charge the
battery yourself, follow the operating
instructions for your charging device. Battery
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Only use a battery charge unit with a
maximum charging voltage of 14.8 V.
X
Charge battery in accordance with the
instructions of the battery charger
manufacturer. Jump starting
G
Warning!
Failure to follow these directions will cause
damage to the electronic components, and
can lead to a battery explosion and severe
injury or death.
Never
lean over batteries while connecting or
jump starting. You might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water, and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
Attempting to jump start a frozen battery can
result in it exploding, causing personal injury.
Read all instructions before proceeding.
! Do not tow-start the vehicle. You could
otherwise seriously damage the automatic
transmission which is not covered by the
Mercedes-Benz Limited Warranty.
! Jump starting should only be performed
using the jump-start terminals located in
the engine compartment.
Avoid repeated and lengthy starting
attempts.
Do not attempt to start the engine using a
battery quick-charge unit. If the engine does not run after several
unsuccessful starting attempts, have it
checked at the nearest authorized
Mercedes-Benz Center.
Excessive unburned fuel generated by
repeated failed starting attempts may
damage the catalytic converter
17
and may
present a fire risk.
Make sure the jumper cables do not have
loose or missing insulation.
Make sure the cable clamps do not touch
any
other metal part while the other end is
still attached to a battery.
If the battery is discharged, the engine can be
started with jumper cables and the fully
charged battery of another vehicle or an
equivalent starter pack. Observe the
following:
R Access to the battery is not possible on all
vehicles. If you cannot access the battery
of the other vehicle, provide jump start
power by an external battery or starter
pack.
R Jump starting should only be performed
when the engine and catalytic converter 18
are cold.
R Do not start the engine if the battery is
frozen. Let the battery thaw out first.
R Only jump start from batteries with the
same voltage rating (12 V). Jump starting
with a more powerful battery could damage
the vehicle’s electrical system. Such
damage will not be covered by the
Mercedes-Benz Limited Warranty.
R Only use jumper cables with sufficient
cross-section and insulated terminal
clamps.
R Always make sure the jumper cables are
not on or near pulleys, fans or other parts
17 Vehicles with gasoline engine only.
18 Vehicles with gasoline engine only. 336
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that move when an engine is started or
running.
R Should the battery be drained completely,
let the donating power source charge the
vehicle for several minutes before
reattempting the starting process.
The jump-start contacts are located in the
engine compartment on the passenger side. X
Make sure the two vehicles do not touch.
X Switch off all electrical consumers.
X Engage the parking brake.
X Make sure the automatic transmission is in
park position P.
X Open the hood (Y page 222). Position
C represents the charged battery of
another vehicle or an equivalent starter pack.
X Flip up cover : of positive terminal = in
direction of arrow.
! Never invert the terminal connections!
X Connect positive terminal ; of charged
battery C with positive terminal = with a
jumper cable. Clamp the cable to positive
terminal ; of charged battery C first.
X Start engine of the vehicle with charged
battery C and run at idle speed.
X Slide cover A from negative terminal B in
direction of arrow.
X Connect negative terminal ? of charged
battery C with negative terminal B with a jumper cable. Clamp the cable to
negative terminal ? of charged battery
C first.
X Start engine of the vehicle with the
discharged battery and run at idle speed.
You can now turn on the electrical
consumers. Do not switch on the
headlamps under any circumstances.
X Remove the jumper cables from negative
terminals ? and B first.
X Remove the jumper cables from positive
terminals ; and =.
You can now switch on the headlamps.
X Close cover : of positive terminal =. Jump starting
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