Opening and closing
741
Closing button
X Press closing button 1.
The tailgate closes automatically.
Closing from the outside and locking
centrally (with KEYLESS GO*) You can close the tailgate from the outside
using the closing button in the tailgate, or you
can close and centrally lock the vehicle simul-
taneously with the KEYLESS GO button*. G
Risk of injury
Monitor the tailgate closing procedure to
make sure that nobody can become trap-
ped. Press the closing button in the tailgate
again or press the ibutton on the key
to halt the closing procedure. i
Do not leave the key in the luggage com-
partment. You could otherwise lock your-
self out. 1
Closing button
2 KEYLESS GO button*
X To close: press closing button 1.
X To close and lock centrally: press KEY-
LESS GO button* 2.
i If you leave a KEYLESS GO key* in the
luggage compartment, the tailgate will not
lock.
If a KEYLESS GO key has not been recog-
nised, the closing procedure that has
already started is cancelled. Opening and closing from inside the
vehicle You can open/close the tailgate from the
driver's seat when the vehicle is stationary.
G
Risk of injury
Monitor the tailgate closing procedure to
make sure that nobody can become trap-
ped. Press the remote operating switch
again to stop the closing procedure. 1
Remote operating button Controls
* optional
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Lights
99
X
To switch on: turn the light switch to
U.
The side lamps are switched on and off
automatically when the key is in position
1 in the ignition lock.
The dipped-beam headlamps, side lamps
and licence plate lamp are switched on
automatically when the engine is running.
When the parking lamp or dipped-beam
headlamps are switched on, the indicator
lamp next to the light switch lights up.
Front fog lamps/Rear fog lamp G
Risk of accident
If you suspect that driving conditions will be
foggy, turn the light switch to Bbefore
you start your journey. Otherwise, your
vehicle may not be visible and you could
endanger yourself and others. G
Risk of accident
When it is dark or foggy, turn the light
switch from UtoB in good time.
Otherwise, the headlamps could switch off
temporarily and you could cause an acci-
dent.
When the light switch is set to Uyou can-
not switch on the front or rear fog lamps. X
Turn the key to position 2in the ignition
lock.
X To switch on the front fog lamps: turn
the light switch to the BorC posi-
tion.
X Pull the light switch out to the first stop.
The ¥ green indicator lamp next to the
light switch lights up.
X To switch on the rear fog lamp: turn the
light switch to BorC.
X Pull the light switch out to the second
detent.
The † yellow indicator lamp next to the
light switch lights up.
X To switch off the front foglamps/rear
foglamp: push in the light switch to the
stop.
The corresponding indicator lamp goes out. Combination switch (turn signals,
main-beam headlamps and headlamp
flasher)
Turn signal Combination switch
1
Right-hand turn signal
2 Left-hand turn signal
X To switch on: press the combination
switch in the direction of arrow 1or2.
The corresponding turn signal indicator
lamp K orL in the instrument clus-
ter flashes.
i If you only wish to indicate a minor change
of direction, press the combination switch Controls
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Sliding sunroof
180
Lowering and closing X
To lower manually: pull the switch in the
direction of arrow 2and hold it until the
sliding/tilting sunroof is in the desired posi-
tion.
X To lower fully: pull the switch briefly
beyond the pressure point in the direction
of arrow 2and release it.
X To stop: press or pull the switch in any
direction.
Rain closing feature* The sliding/tilting sunroof closes automati-
cally:
R if it starts to rain
R at extreme outside temperatures
R after 12 hours
R if there is a malfunction in the power supply
The rear of the sliding/tilting sunroof is then
raised in order to ventilate the interior of the
vehicle.
i The sliding/tilting sunroof is opened
slightly again if it is obstructed while being
closed by the rain closing feature. The rain
closing feature is then deactivated. i
The sliding/tilting sunroof does not close
if:
R it is raised at the rear
R it is blocked
R no rain is falling on the windscreen (e.g.
because the vehicle is under a bridge or
in a carport)
Opening and closing the cover The cover functions as a sunblind. When you
open the sliding/tilting sunroof, the cover
moves back with it.
When the sliding/tilting sunroof is closed or
raised at the rear, you can open or close the
cover manually.Resetting the sliding/tilting sunroof Reset the sliding/tilting sunroof if it does not
open smoothly, or if the battery has been dis-
connected or has become discharged.
X
Make sure that the key is in position 0in
the ignition lock.
X Remove the fuse for the sliding/tilting sun-
roof in the main fuse box (Y page 334).
i The fuse allocation chart can be found in
the vehicle tool kit (Y page 252).
X Reinsert the fuse.
X Make sure that the key is in position 2in
the ignition lock.
X The sliding/tilting sunroof is raised fully at
the rear.
X Keep the switch pressed for an additional
second.
X Make sure that the sliding/tilting sunroof
can be opened or closed fully again
(Y page 179).
X If this is not the case, consult a qualified
specialist workshop. Controls
* optional
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Driving
tips 233
Downhill gradients On long and steep downhill gradients, espe-
cially if the vehicle is laden or towing a trailer,
you must select shift range
1,2or 3in good
time.
i This also applies if you have activated
cruise control, Speedtronic or Distronic*.
This uses the braking effect of the engine and
you will not have to brake to such an extent
to maintain the same speed. This relieves the
load on the brake system and prevents the
brakes from overheating and wearing too
quickly. If you need additional braking,
depress the brake pedal repeatedly rather
than continuously.
Heavy and light loads If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately, but
drive on for a short while. This allows the air-
flow to cool the brakes more quickly.
G
Risk of accident
Never depress the brake pedal continu-
ously while the vehicle is in motion, e.g.
never cause the brakes to rub by applying
constant slight pedal pressure. This causes
the brake system to overheat, increases the braking distance and can lead to the
brakes failing completely.
If the brakes have been used only moderately,
you should occasionally test their effective-
ness. To do this, brake more firmly from a
higher speed. This improves the grip of the
brakes.
Wet roads If driving in heavy rain for a prolonged period
of time without braking, there may be a
delayed reaction from the brakes, when brak-
ing for the first time. You must brake harder.
You must therefore maintain a greater dis-
tance from the vehicle in front.
Brake firmly after driving on a wet road. This
way the brake discs will become warm, drying
more quickly, which will protect them against
corrosion.
Limited braking performance on salted
roads
G
Risk of accident
The layer of salt on the brake discs and the
brake pads/linings may cause a delay in
the braking effect, resulting in a signifi- cantly longer braking distance, which could
lead to an accident.
To avoid this danger, you should:
R
occasionally brake carefully, without put-
ting other road users at risk, when you
are driving on salted roads. This helps to
remove any salt that may have started to
build up on the brake discs and the brake
pads/linings.
R maintain a greater distance to the vehicle
ahead and drive with particular care.
R carefully apply the brakes at the end of a
trip and immediately after commencing a
new trip, so that salt residues are
removed from the brake disc.
New brake pads/linings For safety reasons, Mercedes-Benz recom-
mends that you only have brake pads/linings
fitted to your vehicle that have been approved
for Mercedes-Benz vehicles or which corre-
spond to an equivalent quality standard.
Brake pads/linings which have not been
approved for Mercedes-Benz or which are not
of an equivalent quality could affect your vehi-
cle's operating safety. Operation
* optional
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Display
messages 263Display messages Possible cause/consequence Possible solution
Tyre pressure Check tyres
G
Risk of accident
The tyre pressure loss warning system has
detected a significant pressure loss. X
Stop the vehicle without making any sudden
steering or braking manoeuvres. Pay attention
to the traffic conditions as you do so.
X Check the tyres.
X Check the tyre pressure and correct it if nec-
essary (Y page 226).
X Repair or change the faulty wheel as neces-
sary (Y page 313).
X Then restart the tyre pressure loss warning
system once the tyre pressure is correct
(Y page 227). Check tyres, then restart Run
Flat Indicator There was a tyre pressure warning mes-
sage. X
Make sure that the pressure set is correct for
all tyres (Y page 226).
X Restart the tyre pressure loss warning sys-
tem (Y page 228). Run Flat Indi-
cator inoperative The tyre pressure loss warning system is
deactivated due to a malfunction. X
Visit a qualified specialist workshop. Please correct tyre pressures
Vehicles with tyre pressure monitor*:
The pressure is insufficient in one or more
tyres, or the pressures of the individual
tyres differ significantly. X
Check the tyre pressure at the next opportunity
and correct it if necessary ( Ypage 226). Cruise control
and SPEEDTRONIC inoperative Speedtronic and cruise control are
unavailable. X
Visit a qualified specialist workshop. Practical advi
ce
* optional
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Display
messages 269Display messages Possible cause/consequence Possible solution
D Coolant Stop car,
turn engine off The coolant is too hot. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Switch off the engine.
X Make sure that the airflow to the radiator is not
blocked, e.g. by snow, slush or ice.
X Wait until the message disappears before
restarting the engine. There is otherwise a risk
of engine damage.
X Observe the coolant temperature gauge
(Y page 125).
X If the temperature increases again, visit a quali-
fied specialist workshop immediately. D Coolant Stop car,
turn engine off The poly-V-belt may have torn. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Switch off the engine.
X Check the poly-V-belt.
X If it has torn: do not drive on. Contact the
nearest qualified specialist workshop.
X If it is not damaged: do not start the engine
again until the message disappears. There is
otherwise a risk of engine damage. Practical advi
ce
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Display
messages 275Display messages Possible cause/consequence Possible solution
H Tyre pressure
Check tyres G
Risk of accident
The pressure in one or more tyres has
dropped significantly. The affected wheel
is highlighted in the tyre pressure display
of the tyre pressure monitor*. X
Stop the vehicle without making any sudden
steering or braking manoeuvres. Pay attention
to the traffic conditions as you do so.
X Check the tyres.
X Repair or change the faulty tyre if necessary
(Y page 313).
X Check the tyre pressure and correct it if nec-
essary (Y page 226).
The warning will disappear automatically after
you have been driving for a few minutes with
the corrected tyre pressure. H Please correct
tyre pressure(s) Vehicles with a tyre pressure monitor*:
the pressure of at least one tyre is too low
or there is a significant discrepancy
between the tyre pressures of the individ-
ual wheels. X
Check the tyre pressure at the next opportunity
and correct it if necessary ( Ypage 226). I Change key batter-
ies The KEYLESS GO* key batteries are dis-
charged. X
Change the batteries (Y page 305).I Key does not belong
to vehicle You have put the wrong key in the ignition
lock. X
Use the correct key. I Key not detected
The KEYLESS GO* key is not in the vehicle.
If the engine is switched off, the vehicle
can no longer be locked centrally and the
engine cannot be started. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Look for the KEYLESS GO *key. Practical advice
* optional
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Display
messages 276 Display messages Possible cause/consequence Possible solution
I Key not detected
The KEYLESS GO* key is not detected
while the engine is running, due to radio
interference. X
Stop the vehicle. Pay attention to the traffic
conditions as you do so.
X Operate the vehicle using the key in the ignition
lock if necessary. I Key not detected
The KEYLESS GO* key cannot be detec-
ted. X
Change the location of the KEYLESS GO key*
within the vehicle.
X Operate the vehicle using the key in the ignition
lock if necessary. I Key detected in
vehicle
The KEYLESS GO key* has been detected
in the vehicle during locking. X
Remove the KEYLESS GO key* from the vehi-
cle. I You need a new key The key no longer functions. X
Visit a qualified specialist workshop. I Pull starting but-
ton out then insert
key Continuously unable to detect the KEY-
LESS GO key*. X
Operate your vehicle using the KEYLESS GO*
key in the ignition lock.
X Visit a qualified specialist workshop. X inoperative Bat-
tery weak The battery voltage is insufficient. The
auxiliary heating/ventilation* has
switched off or cannot be switched on. X
Drive for a longer distance.
The battery is being charged. The auxiliary
heating/ventilation* is reactivated as soon as
there is sufficient battery voltage. X inoperative Refuel There is insufficient fuel in the fuel tank.
The auxiliary heating* cannot be switched
on. X
Refuel at the nearest filling station. Practical advi
ce
* optional
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