VehicleDisplay messagesPossible causes/consequences and M SolutionsEYou are driving with the hood or the tailgate open.XStop the vehicle in a safe location as soon as it is safe to
do so.XClose the hood ( Y page 229) or the tailgate ( Y page 75).
There is otherwise danger of an accident.
You are trying to lock the vehicle with the KEYLESS-GO
function with a door or the tailgate open.XClose all doors and/or the tailgate ( Y page 75).;You are driving with at least one door open.XClose all doors.+Key
Detected
In VehicleA SmartKey with KEYLESS-GO left in the vehicle was
recognized while trying to lock the vehicle from the outside.XTake the SmartKey out of the vehicle.+Don’t
Forget
Your KeyThis message appears for a maximum of 60 seconds if the
driver’s door is opened with the engine turned off and no
SmartKey in the starter switch. This message is only a
reminder.XTake the SmartKey with you when leaving the vehicle.+Remove KeyYou have forgotten to remove the SmartKey.XRemove the SmartKey from the starter switch.+You need
a new key.The SmartKey is malfunctioning.XContact an authorized Mercedes-Benz Center.+Key Does
Not
Belong to
VehicleThe SmartKey in the starter switch does not belong to the
vehicle.XFind the SmartKey that belongs to the vehicle to operate
the vehicle.+Change
Key
BatteriesThe batteries in the SmartKey with KEYLESS-GO are
discharged.XReplace the batteries ( Y page 326).304Vehicle status messages in the multifunction displayPractical hints
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EngineDisplay messagesPossible causes/consequences and M Solutions+Top Up
Coolant
See
Operator’s
ManualThe coolant level is too low.XAdd coolant ( Y page 231).XIf you have to add coolant frequently, have the cooling
system checked at an authorized Mercedes-Benz Center.GWarning!
Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn
if it comes into contact with hot engine parts. You could be seriously burned.
! Do not ignore the low engine coolant level warning. Extended driving with the message
and symbol displayed may cause serious engine damage not covered by the Mercedes-Benz
Limited Warranty.
Do not drive without sufficient amount of coolant in the cooling system. The engine will
overheat causing major engine damage.
Display messagesPossible causes/consequences and M Solutions?Coolant
Stop car,
switch
engine
off.The coolant is too hot.XStop the vehicle immediately as soon as it is safe to do so.XTurn off the engine immediately.XEngage the parking brake.XOnly start the engine again after the message disappears.
You could otherwise damage the engine.XObserve the coolant temperature in the multifunction
display.XIf the temperature rises again: Contact an authorized
Mercedes-Benz Center immediately.
During severe operation conditions and stop-and-go city
traffic, the coolant temperature may rise close to 248‡
(120†).
GWarning!
Driving when your engine is overheated can cause some fluids which may have leaked into the
engine compartment to catch fire. You could be seriously burned.
Steam from an overheated engine can cause serious burns which can occur just by opening the
engine hood. Stay away from the engine if you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the
vehicle and do not stand near the vehicle until the engine has cooled down.
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Rear lampsType:Backup lamp: P 21 W;Rear foglamp (driver’s side only): H 21 WLicense plate lampsType:License plate lamps: C 5 WNotes on bulb replacement
! Do not replace LEDs or bulbs not
described in this section. You could
otherwise damage the LEDs, the bulbs or
parts of the vehicle. Only have the LEDs and
bulbs replaced at an authorized Mercedes-
Benz Center.
ROnly use 12-volt bulbs of the same type and
with the specified watt rating.
RSwitch the lights off before changing a bulb
to prevent short circuits.
RAlways use a clean lint-free cloth when
handling bulbs.
RYour hands should be dry and free of oil and
grease.
RIf the newly installed bulb does not come
on, contact an authorized Mercedes-Benz
Center.
iMercedes-Benz recommends using
Longlife (LL) bulbs.
Replacing bulbs for front lamps
Before you start to replace a bulb for a front
lamp, do the following:
XSwitch off the ignition.XTurn the exterior lamp switch to position
$.
XOpen the hood (Y page 228).330Replacing bulbsPractical hints
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Correct headlamp adjustment is extremely
important. High beam adjustments
simultaneously aim the low beam. To check
and readjust a headlamp, follow the steps
described:
XPark the vehicle on a level surface 25 feet
(7.6 m) from a vertical test screen or wall.
XMake sure the vehicle has a normal tailgate
load.
XSwitch on the low beam headlamps L.
If the beam does not show a beam pattern as
indicated in the figure left, then follow the
steps below:
XOpen the hood (Y page 228).
The adjustment screws are located under the
cover panel.
XInsert a suitable tool into the openings in
the panel cover. The direction of arrows
= and ? indicate the angle in which the
tool has to be inserted in oder to access the
adjustment screws.
XAlways turn the adjustment screws equally
for vertical adjustment until the headlamp
is adjusted as shown in :. Turn clockwise
for upward movement and
counterclockwise for downward
movement.
Graduations:
RScrew at arrow =: 0.67° pitch
RScrew at arrow ?: 0.50° pitch
The left and right headlamps must be
adjusted individually.
iIf it is not possible to obtain a proper
headlamp adjustment, have the system
checked at an authorized Mercedes-Benz
Center.
Replacing wiper blades
Safety notes
GWarning!
For safety reasons, switch off the wipers and
remove the SmartKey from the starter switch
(vehicles with KEYLESS-GO: Make sure the
vehicle’s on-board electronics have status 0)
before replacing a wiper blade. Otherwise, the
wiper motor could suddenly turn on and cause
injury.
GWarning!
Wiper blades are components that are subject
to wear and tear. Replace the wiper blades
twice a year, preferably in the spring and fall.
Otherwise the windows will not be wiped
properly. As a result, you may not be able to
observe surrounding traffic conditions and
could cause an accident.
! Never open the hood when a front wiper
arm is folded forward.
Hold on to the wiper when folding a wiper
arm back. If released, the force of the
impact from the tensioning spring could
crack the windshield or the rear window.
Do not allow a wiper arm to contact the
windshield glass or the rear window
without a wiper blade inserted.
Mercedes-Benz recommends that you have
this work carried out at an authorized
Mercedes-Benz Center.
XRemove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO:
XMake sure the vehicle’s on-board
electronics have status 0 (Y page 80).
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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 20
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 21
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
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.XMake sure the two vehicles do not touch.XSwitch off all electrical consumers.XEngage the parking brake.XMake sure the automatic transmission is in
park position P.XOpen the hood ( Y page 228).20
Vehicles with gasoline engine only.
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XTurn off the engine.XRemove the SmartKey from the starter
switch.
XVehicles with KEYLESS-GO: Open the
driver’s door (this puts the starter switch in
position 0, same as with the SmartKey
removed from the starter switch). The
driver’s door then can be closed again.
Fuse box in passenger compartment
! Do not use sharp objects such as a
screwdriver to open the fuse box cover in
the dashboard. You could damage the fuse
box cover or the dashboard.
The fuse box is located behind a cover in the
dashboard on the front passenger side.
XOpen the front passenger door.XOpening: Open the glove box.XOpening: Insert flat, blunt object as a lever
into the edge of fuse box cover : at the
position indicated by the arrow.
XLoosen fuse box cover : from the
dashboard using the lever.
XUsing your hands, pull fuse box cover :
out and remove.
XClosing: Hook fuse box cover : into
holders on the front of the dashboard.
XPress fuse box cover : back on until it
engages.
! The fuse box cover must be properly
positioned as described. Otherwise,
moisture or dirt could enter the fuse box
and possibly impair fuse operation.
Fuse box in engine compartment
XOpen the hood.
Example illustration fuse box GL 450 (GL 350BlueTEC, GL 550 similar)
XWith a dry cloth, remove any moisture from
fuse box cover :.
XOpening: Pull clamps ; in direction of
arrow.
XLift fuse box cover : up.XClosing: Make sure the sealing rubber is
positioned properly.
XPress fuse box cover : down and secure
with clamps ;.
! The fuse box cover must be properly
positioned as described. Otherwise,
moisture or dirt could enter the fuse box
and possibly impair fuse operation.
XClose the hood after checking or replacing
fuses.
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