MERCEDES-BENZ E-CLASS SALOON 2008 Owners Manual
Page 331 of 401
Flat tyre
328 MOExtended run-flat system*
The MOExtended run-flat system must only
be used in conjunction with the tyre pressure
loss warning system or the tyre pressure
monitor*.
! 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.
You must not exceed a maximum speed of
80 km/h.
i Vehicles featuring the MOExtended run-
flat system are not equipped with the
TIREFIT kit*.
It is therefore recommended to additionally
equip your vehicle with the TIREFIT kit*
when fitting tyres that do not feature run-
flat properties, e.g. winter tyres. i
A TIREFIT kit* is available from any quali-
fied specialist workshop, e.g. a Mercedes-
Benz Service Centre. 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
MOExtended spare tyres should be used.
These must be of the size specified for the
vehicle. Practical advice
* optional
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Page 332 of 401
Battery
329Battery
Notes on the 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. 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 a special collection point for old
batteries.
G
Risk of injury
Mercedes-Benz recommends that, for
safety reasons, you only use batteries
which have been tested and approved for
your vehicle by Mercedes-Benz. These bat-
teries provide increased impact protection
to prevent 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, Practical advice
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Page 333 of 401
Battery
330 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 the engine off and remove the key
before unscrewing or disconnecting the
terminal clamps from the battery. You may
otherwise destroy electronic 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.
Installation location of the battery Your vehicle is equipped with a battery in the
boot. It is located under the cover in the spare
wheel well.
X Remove the luggage well (Y page 192). Saloon: battery in the boot
1
Electrostatic protection
2 Battery Saloon
1
Negative terminal
2 Positive terminal (under cover)
3 Cell cap 4
Breather hose
i On vehicles with a spare tyre*, the battery
is located in the recess on the right-hand
side. Estate: battery under the cover in the luggage com-
partment on the right-hand side
X
Pull the cover upwards and remove it. Practical advice
* optional
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Battery
331Estate
1 Electrostatic protection
2 Battery Estate
1 Positive terminal (under cover)
2 Negative terminal
3 Cell cap 4
Breather hose
Electrostatic protection G
Risk of injury
Only use rechargeable batteries with elec-
trostatic protection fitted. The electrostatic
protection prevents the creation of sparks
due to electrostatic buildup, thereby pre-
venting the highly explosive mixture of
gases in the battery from igniting.
i You can obtain the electrostatic protec-
tion from any Mercedes-Benz Service
Centre.
X To remove: pull the electrostatic protec-
tion upwards and remove.
X To fit: push the electrostatic protection
firmly onto the battery. Disconnecting 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
on vehicles with automatic transmis-
sion*
! 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 selector lever to position Pon vehicles
with automatic transmission*.
X Switch off all electrical consumers.
X Turn the key to position 0in the ignition
lock and remove it. Practical advice
* optional
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Page 335 of 401
Battery
332
X
Open the boot/luggage compartment.
X Remove the cover (Y page 256).
X Remove the battery cover.
X Remove the negative terminal clamp from
the battery.
X Remove the cover from the positive termi-
nal clamp.
X Remove the positive terminal clamp from
the battery.
X Disconnect the breather hose. Removing the battery
Saloon X
Disconnect the battery ( Ypage 331).
X Loosen the bolt which holds the battery in
place.
X Release the strap and remove the battery. Estate 1
Spacer
2 Battery
3 Strap
X Disconnect the battery ( Ypage 331).
X Loosen the bolt which holds the battery in
place.
X Release strap 3and remove the battery.
X Remove spacer 1from the breather hose
on the battery. 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.
! 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. Practical advice
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Page 336 of 401
Jump-starting
333
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 332) in
reverse order.
! Do not fit refillable batteries without elec-
trostatic protection. The electrostatic dis-
charge could otherwise cause the battery
to explode. The battery acid released could
cause damage to your vehicle.
Further information on electrostatic protec-
tion (Y page 331). G
Risk of injury
Battery acid is caustic. Avoid contact with
the skin, eyes or clothing. 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 between the battery and
the breather hose.
X Refit the electrostatic protection if neces-
sary (Y page 331).
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 135).
R Reset the sliding/tilting sunroof*
(Y page 182).
R Reset the function for folding the exterior
mirrors in/out automatically* by folding
the mirrors out once (Y page 91). Jump-starting
Jump-starting your vehicle
If your vehicle's battery is discharged, the
engine can be jump-started from another
vehicle or from an external battery using jump
leads.
Observe the following points:
R Jump-starting may only be performed when
the engine and catalytic converter are cold.
R Do not start the engine if the battery is fro-
zen. Let the battery thaw first.
R Jump-starting may only be performed from
batteries with a nominal voltage of 12 V.
R Only use jump leads which are protected
against polarity reversal and which have a
sufficient cross-section and insulated ter-
minal clamps.
i Jump leads which are protected against
polarity reversal and further information
about jump-starting can be obtained from
any Mercedes-Benz Service Centre.
! Avoid repeated and lengthy starting
attempts.
Never start the vehicle using a rapid battery
charger. Practical advice
* optional
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Page 337 of 401
Jump-starting
334 G
Risk of injury
There is a risk of acid burns when jump-
starting a vehicle due to the gases which
escape from the battery. Do not lean over
the battery while the engine is being jump-
started. G
Risk of explosion
Gases escaping from the battery during
jump-starting may cause minor explosions.
Avoid creating sparks. Keep naked flames
away from the battery, and do not smoke.
Comply with safety precautions and take
protective measures when handling batter-
ies. You will find these under “Battery” in
the index.
X Make sure that the two vehicles do not
touch.
X Depress the parking brake.
X Manual transmission: engage neutral.
X Automatic transmission*: move the
selector lever to P.
X All vehicles: switch off all electrical con-
sumers. Saloon
1
Negative terminal on your vehicle
2 Positive terminal on your vehicle
3 Positive terminal of donor battery
4 Negative terminal of donor battery
X If your vehicle is being jump-started by
another vehicle, allow the other vehicle's
engine to idle.
X Connect positive terminal 2on your vehi-
cle to positive terminal 3of the donor
battery using the jump lead, beginning with
your own battery.
X Connect negative terminal 4of the donor
battery to negative terminal 1of your
vehicle's battery using the jump lead, con- necting the jump lead to the donor battery
first.
X Start the engine.
X When the engine is running, switch on a few
electrical consumers, e.g. the blower. Do
not switch on the lights.
X First disconnect the jump lead from nega-
tive terminals 1and 4, then from positive
terminals 2and 3each time beginning
with your vehicle's battery.
X Have the battery checked at a qualified
specialist workshop, e.g. a Mercedes-Benz
Service Centre. Practical advice
* optional
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Jump-starting
335
Estate
1
Cover
2 Rotary catches
X Turn three rotary catches 2through a
quarter turn.
X Remove cover 1forwards. 1
Earth point on your vehicle
2 Positive terminal on your vehicle (under
cover)
X If your vehicle is being jump-started by
another vehicle, allow the other vehicle's
engine to idle.
X Connect the positive terminals of the two
batteries using the jump lead, beginning
with your own battery.
X Connect the negative terminal of the donor
battery to the body earth point using the
jump lead, connecting the jump lead to the
negative terminal of the donor battery first.
X Start the engine.
X When the engine is running, switch on a few
electrical consumers, e.g. the blower. Do
not switch on the lights. X
Remove the jump lead from earth point
1 on your own vehicle and from the neg-
ative terminal of the donor vehicle first,
then from the positive terminals, beginning
with your vehicle's battery.
X Have the battery checked at a qualified
specialist workshop, e.g. a Mercedes-Benz
Service Centre. Jump-starting another vehicle
You can jump-start another vehicle which has
a flat battery. Observe the following points:
R Only 12 V batteries can be jump-started.
R Do not jump-start frozen batteries. Allow
the battery to thaw first.
R Observe the requirements for the other
vehicle.
R Only use jump leads which are protected
against polarity reversal and which have a
sufficient cross-section and insulated ter-
minal clamps. G
Risk of acid burns
There is a risk of acid burns when jump-
starting a vehicle due to the gases which
escape from the battery. Do not lean over Practical advice
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Page 339 of 401
Jump-starting
336 the battery while the engine is being jump-
started. G
Risk of explosion
Gases escaping from the battery during
jump-starting may cause minor explosions.
Avoid creating sparks. Keep naked flames
away from the battery, and do not smoke.
Comply with safety precautions and take
protective measures when handling batter-
ies. You will find these under “Battery” in
the index.
! You must not use the jump-start connec-
tors in the engine compartment to jump-
start another vehicle. The jump-start con-
nectors are not suitable for jump-starting
another vehicle. The vehicle could be dam-
aged by this.
X Make sure that the two vehicles do not
touch.
X Depress the parking brake.
X Vehicles with manual transmission: engage
neutral.
X Vehicles with automatic transmission*:
move the selector lever to P.X
Switch off all electrical consumers.
X Start the engine and allow it to idle. Saloon
1
Negative terminal of your vehicle's bat-
tery
2 Positive terminal of your vehicle's battery Estate
1
Positive terminal of your vehicle's battery
2 Negative terminal of your vehicle's bat-
tery
X Connect the positive terminals of the two
batteries using the jump lead, connecting
the jump lead to the donor battery first.
X Connect the negative terminals of the bat-
teries using the jump lead, connecting the
jump lead to the donor battery first.
X Start the engine.
X First disconnect the jump lead from the
negative terminals and then from the posi-
tive terminals, beginning with the other
vehicle's battery. Practical advice
* optional
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Page 340 of 401
Towing and tow-starting
337Towing and tow-starting
Points to remember
G
Risk of accident
If you tow the vehicle, you must use a rigid
towing bar if:
R the engine is not running
R there is a brake system malfunction
R the voltage supply or the vehicle's elec-
trical system is damaged
The electric power steering and the brake
force boosting effect do not work when the
engine is not running. Greater braking force
will then be required and the brake pedal
travel will be longer. If necessary, depress
the brake pedal with maximum force.
Do not tow the vehicle if the key cannot be
turned in the ignition lock. If this is the case,
the steering is locked and the vehicle can-
not be steered.
If you tow or tow-start another vehicle, its
weight must not exceed the maximum per-
missible gross vehicle weight of your vehi-
cle. G
Risk of accident
The vehicle is braked when HOLD is activa-
ted. Therefore, deactivate HOLD if the vehi-
cle is to be towed.
If you tow or tow-start another vehicle, its
weight must not exceed the maximum per-
missible gross vehicle weight of your vehi-
cle.
It is better to have the vehicle transported
than to have it towed.
When towing, observe the legal requirements
in all countries concerned.
! When towing, pull away slowly and with-
out jerking. If the tractive power is too high,
the vehicles could be damaged. Do not use
the towing eye for recovery.
! You may tow the vehicle for a maximum
of 50 km. A towing speed of 50 km/h must
not be exceeded.
With towing distances over 50 km, the
entire vehicle needs to be lifted up and
transported.
! Only secure the tow cable or towing bar
to the towing eyes. You may otherwise
damage the vehicle. R
Vehicles with an automatic transmission*
must not be tow-started.
R If the engine does not start, try jump start-
ing (Y page 333).
R If it is not possible to jump-start the vehicle,
have it towed to the nearest qualified spe-
cialist workshop, e.g. a Mercedes-Benz
Service Centre.
R If the vehicle has suffered transmission
damage, only tow it with the propeller shaft
disconnected.
R The automatic transmission* selector lever
must be in the Nposition when towing the
vehicle away.
R If you are towing the vehicle over a consid-
erable distance, this must only be done
with the rear axle raised.
R The ignition must be switched off if you are
towing the vehicle with the front/rear axle
raised. Intervention by ESP ®
could other-
wise damage the brake system.
R Vehicles with 4MATIC* may not be towed
with the front or rear axle raised.
R Before towing the vehicle, make sure that
the battery is connected and charged. Oth-
erwise: Practical advice
* optional
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