2009 MERCEDES-BENZ E-CLASS SALOON key battery

Engine
Problem
Possible causes/consequences and
X
X Solutions The engine will not
start.
The HOLD function or Distronic Plus* is activated.
X
Switch off HOLD (Y page 151) or Distronic Plus (Y page 146).
X Try to start the engine again. The engine will not
start. You can hear the
starter motor operat-
ing. R
There is a malfunction in the engine electronics.
R There is a malfunction in the fuel supply.
R The on-board voltage is too low because the starter battery is
too weak or discharged.
X Before the next start attempt, turn the key back to position 0
(Y page 75) in the ignition lock or press the Start/Stop but-
ton* until all the indicator lights in the instrument cluster have
gone out.
X Try to start the engine again (Y page 103). When doing so,
remember that excessively long and frequent attempts to start
the engine will drain the battery.
If the engine does not start after several attempts:
X Consult a qualified specialist workshop. The engine will not
start. You can hear the
starter motor operat-
ing. The reserve fuel
warning lamp is on and
the fuel gauge
shows
0. The fuel tank has been run dry.
X
Refuel the vehicle. The engine will not
start. You cannot hear
the starter motor. The on-board voltage is too low because the starter battery is too
weak or discharged.
X
Jump-start the vehicle (Y page 323).
If the engine does not start despite attempting to jump-start it:
X Consult a qualified specialist workshop. The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X Try to start the engine again.
If the engine still does not start:
X Consult a qualified specialist workshop. Troubleshooting
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Problem
Possible causes/consequences and
X
X Solutions You have lost a key.
X
Have the key cancelled at a Mercedes-Benz Service Centre.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the manual locks changed too. You have lost the emer-
gency key element.
X
Report the loss immediately to the vehicle insurers.
X If necessary, have the manual locks changed too. The engine cannot be
started using the key. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating* or inte-
rior lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 319).
or
X Jump-start the vehicle (Y page 323).
or
X Consult a qualified specialist workshop. The engine cannot be
started using the key.
The steering lock is mechanically blocked.
44
X Remove the key and reinsert it into the ignition lock. While doing
this, turn the steering wheel in both directions. The engine cannot be
started using KEYLESS
GO*. The key is in the
vehicle. A door is open. Therefore, the key cannot be detected as easily.
X
Close the door and try to start the vehicle again. There is interference from a powerful source of radio waves.
X
Start your vehicle using the key in the ignition lock. 44
Not vehicles with DIRECT SELECT selector lever. Troubleshooting
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bonnet
:upwards until the relevant bon-
net actuator cover ;no longer moves.
Bonnet actuator covers ;should now lie
flat against housing =(arrow).
X Close bonnet :(Ypage 219).
If bonnet :cannot be closed or the L
symbol appears in the multi-function display,
repeat the steps again. G
Risk of accident
If the bonnet can still not be engaged properly
or the Lsymbol appears in the multi-func-
tion display, do not continue driving. Other-
wise, the bonnet may open when driving and
block your view. Consult a qualified specialist
workshop. Otherwise, you may cause an acci-
dent and injure yourself and others. Resetting triggered NECK-PRO head
restraints
If the NECK-PRO head restraints are triggered
in an accident, you must reset the head
restraints on the driver's and the front-pas-
senger's seats. Otherwise, the additional pro-
tection will not be available in the event of
another rear-end collision. You can recognise
when head restraints have been triggered by
the fact that they have moved forwards and
can no longer be adjusted.
Mercedes-Benz recommends that you have
NECK-PRO head restraints checked at a quali-
fied specialist workshop, e.g. a Mercedes-
Benz Service Centre, following a rear-end col-
lision.
i This work requires a lot of strength. If you
have difficulty resetting the head
restraints, have this work carried out at a
qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre. Example: Saloon
X
Tilt the top of the head restraint cushion
forwards in the direction of arrow :.
X Push the head restraint cushion down in
the direction of arrow ;as far as it will go.
X Push the head restraint cushion firmly
backwards in the direction of arrow =until
it engages.
X Repeat this procedure for the second head
restraint. Replacing batteries (key and remote
control)
Notes
It is advisable to have the batteries replaced
at a qualified specialist workshop, e.g. at a
Mercedes-Benz Service Centre. G
Risk of poisoning
Batteries contain toxic and caustic substan-
ces. For this reason, keep batteries away from
children.
If a battery is swallowed, consult a doctor
immediately. H
Environmental note
Do not dispose of batteries with the house-
hold rubbish. They contain highly toxic sub-
stances.
Take discharged batteries to a qualified spe-
cialist workshop, e.g. a Mercedes-Benz
Service Centre, or to a special collection point
for old batteries. Replacing batteries (key and remote control)
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Key
Checking the battery X
Press the &or% button.
The battery is working properly if the bat-
tery charge indicator lamp lights up briefly.
Removing/installing the battery You require a CR 2025 3 V cell battery.
X Remove the emergency key element from
the key (Y page 299). X
Press the emergency key element into the
opening in the key in the direction of
arrow ;until cover :of the battery tray
opens. Be sure that your fingers are not
stopping the cover from opening. X
Remove the cover of the battery tray.
X Repeatedly tap the key against your palm
until battery =falls out of the key.
X Insert the new battery with the positive
pole facing upwards. Use a lint-free cloth to
do so. X
Insert the front tabs of the battery tray's
cover first and then press to close it.
X Check the function of all key buttons on the
vehicle. Auxiliary heating* remote control
One 6 V pin battery, type 2CR11108 is
required. X
Prise apart the side arms of battery
cover ;and pull off battery cover ;.
X Remove old battery :.
X Insert the new battery. Observe the polarity
signs on the back of the remote control
when doing so.
X Slide battery cover ;back onto the
remote control.
X Use the remote control to check the vehi-
cle's auxiliary heating functions. Changing bulbs
Notes on changing bulbs
i If you need assistance in changing the
bulbs, contact a qualified specialist work-
shop which has the necessary specialist
knowledge and tools to carry out the work
required. Mercedes-Benz recommends
that you use a Mercedes-Benz Service
Centre for this purpose. In particular, work
relevant to safety or on safety-related sys-
tems must be carried out at a qualified spe-
cialist workshop. 304
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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 Man-
ual.
H
Environmental note
Do not dispose of batteries in the household
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 prevent vehi-
cle occupants from suffering acid burns
should the battery be damaged in the event
of an accident.
To prevent acid burns, observe the following
safety notes when handling batteries:
R do not lean over the battery.
R do not place any metal objects on a battery.
Otherwise, you could cause a short circuit
and the battery's gas mixture could ignite. R
make sure that you do not create an elec-
trostatic charge, e.g. by wearing synthetic
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 discharge
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 electro-
static charge or due to flying sparks.
! Before loosening the terminal clamps of
the battery, switch off the engine and
remove the key or, on vehicles with KEY-
LESS GO*, make sure that the ignition is
not switched on. In the instrument cluster,
all of the indicator lamps must be out. Oth-
erwise, you may destroy electronic compo-
nents, such as the alternator.
i Mercedes-Benz recommends that you
have work involving the battery, e.g.
removal, charging and replacement, car-
ried out at a qualified specialist workshop,
e.g. a Mercedes-Benz Service Centre.
Installation location of the battery Saloon
Depending on its engine type, your vehicle is
equipped with a battery in the engine com-
partment or boot/luggage compartment. It is
located in front of the bulkhead on the right-
hand side or in the spare wheel well on the320
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right-hand side when viewed in the direction
of travel.
Battery in the engine compartment
:
Battery
; Positive terminal
= Negative terminal
? Breather hose Battery in the boot
:
Positive terminal
; Battery
= Negative terminal
? Breather hose
Estate
Your vehicle is equipped with a battery in the
engine compartment. It is located on the front
bulkhead under the filter box on the right- hand side of the vehicle when viewed in the
direction of travel. Battery in the engine compartment
:
Battery
; Positive terminal
= Negative terminal
? Breather hose
i Remove the key if you park the vehicle
and do not require any electrical consum-
ers. The vehicle will then use very little
energy, thus conserving the battery.
i If the battery is discharged, you must use
the emergency key element to unlock the
vehicle. 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 brake pedal travel will be lon-
ger. If necessary, depress the brake pedal
with maximum force.
R the transmission is locked in position Pon
vehicles with automatic transmission*
! Always disconnect the battery in
the order described below. Never swap the
battery terminals. You may otherwise dam-
age the vehicle electronics. Battery
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X
Firmly depress the parking brake and on
vehicles with automatic transmission*,
shift the transmission to position P.
X Switch off all electrical consumers (e.g.
radio, blower, etc.).
X Turn the key to 0(Y page 75) in the ignition
lock and remove it or make sure that no
ignition position has been selected with
KEYLESS GO*. In the instrument cluster, all
of the indicator lamps must be out.
X Vehicles with the battery in the engine
compartment: open the bonnet.
X Vehicles with the battery in the boot:
open the boot. X
Vehicles with a battery in the engine
compartment: release and remove
clamps ;on filter box :.
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
X Disconnect the battery ( Ypage 321).
X Loosen the bolt which holds the battery in
place.
X Remove the battery. Charging and fitting the battery
G
Risk of injury
Battery acid is caustic. Avoid contact with the
skin, eyes or clothing.
Charging 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 could 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 while 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 charg-
ing 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 still installed.
! Only use battery chargers with a maxi-
mum charging voltage of 14.8 V.
! Only charge the battery using the jump-
start connection point.
X Vehicles with the battery in the engine
compartment: open the bonnet.
X Vehicles with the battery in the boot:
open the boot.
X Connect the battery charger by its positive
terminal and earth point in the same order
as when connecting the donor battery in 322
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deactivate HOLD and Distronic Plus if the
vehicle is to be towed.
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
smoothly. If the tractive power is too high,
the vehicles could be damaged.
! Do not use the towing eye for recovery,
as this could damage the vehicle. If in
doubt, recover the vehicle with a crane.
! You may tow the vehicle for a maximum
of 50 km. A towing speed of 50 km/ hmust
not be exceeded.
For towing distances over 50 km, the entire
vehicle must be lifted up and transported.
! On vehicles with KEYLESS GO*, use the
key instead of the Start/Stop button. Turn
the key to position 2in the ignition lock and
shift the automatic transmission to N. Then
turn the key back to 0and leave it in the
ignition lock.
! Only secure the tow cable or towing bar
to the towing eyes. You could otherwise
damage the vehicle.
R Vehicles with an automatic transmission*
must not be tow-started.
R Vehicles with 4MATIC* must not be towed
with the front or rear axle raised.
R If you are towing the vehicle over a longer
distance, this must be done with the rear
axle raised.
R The ignition must be switched off if you are
towing the vehicle with the rear axle raised.
Otherwise, intervention by ESP ®
could
damage the brake system.
R If the vehicle has suffered transmission
damage, only tow it with the propeller shaft
disconnected. R
If the engine does not start, try jump-start-
ing it (Y page 323).
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 The automatic transmission must be in
position Nwhen the vehicle is being towed.
R Before towing the vehicle, make sure that
the battery is connected and charged. Oth-
erwise:
-you cannot switch on the ignition.
- you cannot shift the transmission to posi-
tion Non vehicles with automatic trans-
mission*.
- you have no support when braking.
i Switch off the automatic locking feature
before the vehicle is towed (Y page 134).
Otherwise, you could be locked out when
pushing or towing the vehicle. Fitting the towing eye
Vehicles with a trailer tow hitch*: if you
intend to use the vehicle for towing, fold out
the ball coupling and connect the towbar
(Y page 234) to this. Towing and tow-starting
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