Flat tyre
321Version 1
1
Flap
2 On/off switch
3 Electric connector with cable
4 Air pump hose with pressure gauge and
pressure release screw
5 Union nut Version 2
2
On/off switch
3 Electric connector with cable
4 Pressure gauge
5 Union nut
6 Pressure release button
X Version 1: open flap1.
X Version 1: pull connector 3and air hose
4 out of the housing.
X Version 2: pull connector 3and the air
hose out of the housing.
X Version 1: make sure that pressure
release screw 4on the pressure gauge is
closed.
X Remove the cap from the valve on the tyre.
X Screw union nut 5on the air hose onto the
valve. X
Make sure on/off switch 2of the electric
pump is set to 0.
X Insert connector 3into the socket in the
luggage compartment (Y page 207) or the
second row of seats (Y page 207).
! The socket /cigarette lighter *in the front
centre console is not designed for operat-
ing the electric air pump.
X Vehicles with a key: make sure that the
key is turned to position 2(Y page 76) in
the ignition lock.
or
X Vehicles with KEYLESS GO: press the
KEYLESS GO button twice.
X Press on/off switch 2on the electric air
pump to I.
The electric air pump is switched on. The
tyre is inflated.
X When a tyre pressure of 3.0 bar has been
reached, press 0on the electric air pump
on/off switch.
The electric air pump is switched off.
! Do not operate the electric air pump for
longer than eight minutes at a time without
a break. Otherwise, it may overheat. Practical advice
* optional
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Flat tyre
322The air pump can be operated again once
it has cooled down.
If the tyre pressure is higher than 3.0 bar:
X Version 1: open pressure release
screw 4on the pressure gauge until the
tyre pressure is correct.
X Version 2: press pressure release button
6 until the tyre pressure is correct.
X Switch off the electric air pump with on/off
switch 2, remove from the tyre valve and
stow it away.
Lowering the vehicle X
Place the ratchet ring spanner onto the
hexagon nut of the jack so that the lettering
AB is visible.
X Lower the vehicle by turning the ratchet
ring spanner until the vehicle is once again
standing firmly on the ground.
X Place the jack to one side. 1
–5 Wheel bolts
X Tighten the wheel bolts evenly in a cross-
wise pattern in the sequence indica-
ted (1 to5). The tightening torque is
150 Nm . G
Risk of accident
Have the tightening torque checked imme-
diately after a wheel is changed. The wheels
could work loose if they are not tightened
to a torque of 150 Nm.
X Turn the jack back to its initial position and
stow it and the rest of the vehicle tool kit in
the luggage compartment. X
Transport the faulty wheel in the boot.
or
X Depending on the size of the wheel, you
may also be able to secure the faulty wheel
in the emergency spare wheel well. In this
case, you will have to remove the stowage
tray from the emergency spare wheel well
and stow it securely in the luggage com-
partment.
i Do not activate the tyre pressure moni-
tor* until the deflated tyre has been
removed from the vehicle. MOExtended run-flat system*
The MOExtended run-flat system must only
be used in conjunction with the tyre pressure
loss warning system*.
! The maximum permissible distance which
can be driven in run-flat mode depends on
the load in the vehicle. It is 50 km if the
vehicle is partially laden and 30 km if fully
laden.
The maximum range that can be driven in
emergency operation is measured from the
point at which the pressure loss warning
message appears in the multi-function dis-
play. Practical advice
* optional
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Battery
323
You must not exceed a maximum speed of
80 km/h. G
Risk of accident
The handling characteristics of your vehicle
deteriorate in run-flat mode, for example:
R when cornering
R when braking
R when accelerating rapidly
Adapt your driving style accordingly and
avoid sudden changes in direction and sud-
den acceleration, as well as driving over
obstacles (i.e. kerbs, potholes), and driving
off-road. This is particularly the case when
the vehicle is heavily laden.
The maximum permissible distance that
can be driven in run-flat mode depends to
a large extent on the loads placed on the
vehicle. It can be shorter due to high
speeds, a heavy load, sudden acceleration
and/or manoeuvring, the road surface con-
dition, outside temperature, etc., or further
if you drive carefully and conservatively.
Do not continue to drive in run-flat mode if:
R you hear banging noises
R the vehicle starts to shake
R you see smoke and smell rubber R
ESP ®
is intervening constantly
R there are tears in the sidewalls of the tyre
After driving in run-flat mode, you must
have the rims checked for damage at a
qualified specialist workshop which has the
necessary specialist knowledge and tools
to carry out the work required. The faulty
tyre must be replaced in every case.
Mercedes-Benz recommends that you use
a Mercedes-Benz Service Centre for this
purpose. In particular, work relevant to
safety or on safety-related systems must be
carried out at a qualified specialist work-
shop.
i On a vehicle with MOExtended tyres, only
use MOExtended spare tyres. These must
be of the size specified for the vehicle. Battery
Notes on the vehicle battery
In order for the battery to achieve the maxi-
mum possible service life, it must always be
sufficiently charged.
Have the battery charge checked more fre-
quently if you use the vehicle mainly for short
trips or if you leave it standing idle for a
lengthy period.
To prevent damage from corrosion, only
replace the battery with one that has a central
ventilation cover.
Consult a Mercedes-Benz Service Centre if
you wish to leave your vehicle parked up for
a long period of time. G
Risk of injury
Comply with safety precautions and take
protective measures when handling batter-
ies. Risk of explosion
Fire, naked flames and
smoking are prohibited
when handling the bat-
tery. Avoid creating
sparks. Practical advice
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Battery
324 Battery acid is caustic.
Avoid contact with the
skin, eyes or clothing.
Wear suitable protective
clothing, in particular
gloves, an apron and a
face mask.
Immediately rinse acid
splashes off with clean
water. Consult a doctor if
necessary.
Wear eye protection.
Keep children away.
Observe this Owner's
Manual.
H
Environmental note
Do not dispose of batteries with the house-
hold rubbish. Dispose of defective batteries
in an environmentally responsible manner.
Take them to a Mercedes-Benz Service Centre or to a special collection point for
old batteries.
G
Risk of injury
For safety reasons, Mercedes-Benz recom-
mends that you only use batteries which
have been tested and approved for your
vehicle by Mercedes-Benz. These batteries
provide increased impact protection to pre-
vent vehicle occupants from suffering acid
burns should the battery be damaged in the
event of an accident.
To prevent acid burns, observe the follow-
ing safety notes when handling batteries:
R Do not lean over batteries.
R Do not place any metal objects on a bat-
tery. You could otherwise cause a short
circuit and the battery's highly flammable
gas mixture could ignite.
R Make sure that you do not create an elec-
trostatic charge, e.g. by wearing syn-
thetic clothing or as a result of friction on
fabrics. Therefore, you should not pull or
slide the battery over carpets or other
synthetic materials.
R Never touch the battery first. To dis-
charge a possible electrostatic charge, step out of the vehicle first and touch the
bodywork.
R Do not wipe the battery using a cloth. The
battery may explode as a result of elec-
trostatic charge or due to flying sparks.
! Switch off the engine and remove the
key/KEYLESS GO * button before loosen-
ing or removing the battery terminal
clamps. You may otherwise destroy elec-
tronic components such as the alternator.
i Mercedes-Benz recommends that you
have all work involving the battery, e.g.
removing, charging and replacing, carried
out at a qualified specialist workshop, e.g.
a Mercedes-Benz Service Centre.
The battery is located under the front seat on
the right-hand side when viewed in the direc-
tion of travel. Practical advice
* optional
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Battery
325Disconnecting the battery
G
Risk of accident
If the battery is disconnected:
R the brake boosting effect will not be avail-
able. Greater braking force will then be
required and the brake pedal travel will
be longer. If necessary, depress the
brake pedal with maximum force.
R you can no longer turn the key in the igni-
tion and, on vehicles with KEYLESS
GO*, pressing the KEYLESS GO button*
will have no effect
R the selector lever is locked in position P
! Always disconnect the battery in
the order described below. Never swap the
terminal clamps. You may otherwise dam-
age the vehicle electronics.
X Firmly depress the parking brake and shift
the DIRECT SELECT lever to position P.
X Switch off the engine.
X Turn the key to position 2(Y page 76)in the
ignition lock.
X Switch off all electrical consumers. X
Open the front right-hand door.
X Position the right-hand front seat at its rear-
most position:
R
partially electric seat adjustment
(Y page 78)
R fully electric seat adjustment
(Y page 79) 1
Front right seat rail cover
2 Front left seat rail cover
X Pull right-hand cover 1forwards in the
direction of the arrow and pull it off the seat
rail.
X Pull left-hand cover 2as far forwards as
possible in the direction of the arrow.
i Left-hand cover 2cannot be completely
pulled off the seat rail. 3
Battery cover fastening nuts
X Loosen and remove fastening nuts 3
along the edge of the carpet.
i To do this, you need a 6 mm Allen key with
a shaft at least 30 cm long (not included in
the vehicle tool kit).
X Position the right-hand front seat as far
forward as possible:
R partially electric seat adjustment
(Y page 78)
R fully electric seat adjustment (Y page 79)
X Turn the key to position 0(Y page 76) in
the ignition lock. Practical advice
* optional
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Battery
326
X
Remove the key from the ignition lock.
or
X On vehicles with KEYLESS GO*: open the
driver's door. 4
Rear seat rail
5 Rear seat rail cover
X Prise off left-hand cover 5from seat rail
4.
X Repeat the procedure for right-hand cover
5. 6
Carpet
X Pull carpet 6back in the direction of the
arrow and fold it. 7
Battery cover fastening nuts X
Loosen and remove fastening nuts 7.
i To do this, you need a 6 mm Allen key with
a shaft at least 30 cm long (not included in
the vehicle tool kit). 8
Battery cover with integrated air duct
9 Pull battery cover to the side
a To raise the battery cover
X Raise battery cover 8gently in the direc-
tion of arrow aand pull in the direction of
arrow 9. Practical advice
* optional
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Battery
327b
Breather hose
c battery
d Battery holder
e Fastening nuts
X Remove breather hose bfrom battery
c.
X Loosen and remove fastening nuts e.
X Remove fastening d.
X Push battery cto the left. f
Positive terminal clamp
g Negative terminal clamp
X Disconnect negative terminal clamp g
from the battery and put it down so that it
does not touch positive terminal clamp
f.
X Remove the cover from positive terminal
clamp f.
X Remove positive terminal clamp ffrom
the battery. Removing the battery
X Disconnect the battery ( Ypage 325).
X Pull the battery up out of the recess. Charging and fitting the battery
G
Risk of injury
Only charge the battery in a well-ventilated
area. As the battery is being charged, gases
can escape and generate minor explosions.
This may injure you and other persons or
cause damage to the paintwork or acid cor-
rosion on the vehicle.
You can obtain information about battery
chargers which allow the battery to be
charged when still installed from a qualified
specialist workshop, e.g. a Mercedes-Benz
Service Centre. G
Risk of injury
There is a risk of acid burns during the
charging process due to the gases which
escape from the battery. Do not lean over
the battery during the charging process. G
Risk of injury
Battery acid is caustic. Avoid contact with
the skin, eyes or clothing. Practical advice
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Battery
328
!
Only charge the installed battery with a
battery charger which has been tested and
approved by Mercedes-Benz. These battery
chargers allow the battery to be charged
while it is still installed. Otherwise, the vehi-
cle's electronic system may be damaged.
! Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.
X Charge the battery. Observe the notes in
the operating instructions for your battery
charger.
X Refit the charged battery.
To do this, follow the steps described in
"Removing the battery" (Y page 327) in
reverse order.
i You can charge the battery using the
jump-start terminals. These are located on
the right when viewed in the direction of
travel.
X Open the bonnet (Y page 220). Jump-start terminals
1
Body earth point (negative terminal)
2 Positive terminal (under cover)
3 Cover Reconnecting the battery
! Always reconnect the battery in the
sequence described below. Never swap the
terminal clamps. You may otherwise dam-
age the vehicle electronics.
X Switch off all electrical consumers.
X Connect the positive terminal clamp and
secure the cover.
X Connect the negative terminal clamp.
X Connect the breather hose. Make sure that
a cell cap is fitted is fitted on the side. i
If the battery power supply has been inter-
rupted (e.g. if it has been reconnected), you
must carry out the following tasks:
R Set the time (Y page 132).
On vehicles with COMAND and a naviga-
tion system*, the clock is set automati-
cally
R Reset the sliding/tilting sun-
roof* (Y page 180).
R Reset the panorama sliding/tilting sun-
roof (Y page 183).
R Reset the function for folding the exterior
mirrors in/out automatically* by folding
the mirrors out once ( Ypage 91).
R Reset the side windows (Y page 107)Practical advice
* optional
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