2009 MERCEDES-BENZ GL SUV battery

Problem
Possible causes/consequences and
X XSolutions The indicator lamp in
the
Á button on the
2-zone automatic air
conditioning
Thermatic/multi-zone
intelligent automatic
air conditioning
Thermotronic* control
panel is lit. The cooling
system cannot be
switched on. Cooling has been deactivated due to a malfunction.
X
Visit a qualified specialist workshop. The indicator lamp in
the
ª rear-window
heating button is flash-
ing. The rear-window
heating has switched
off prematurely or can-
not be switched on. The on-board voltage is too low, because too many consumers are
switched on.
X
Switch off consumers that are not required, e.g. seat heating*
or interior lighting.
Once the battery is sufficiently charged, the rear window heating
will switch back on automatically. Vehicles with auto-
matic child seat recog-
nition on the front-
passenger seat*:
The
4 PASSENGER
AIRBAG OFF warning
lamp on the centre con-
sole is lit. A special Mercedes-Benz child seat with automatic child seat rec-
ognition has been fitted to the front-passenger seat. The front-
passenger airbag has therefore been disabled as desired.
G
Risk of injury
There is no child seat fitted to the front-passenger seat. The auto-
matic child seat recognition* is malfunctioning.
X Remove electronic equipment from the front-passenger seat,
for example:
R
notebook
R mobile phone
R cards with transponders, e.g. ski passes or access passes
If the 4 PASSENGER AIRBAG OFF warning lamp is still lit:
X Visit a qualified specialist workshop. 234
TroubleshootingPractical advice
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Engine
Problem
Possible causes/consequences and
X
X Solutions 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 63) 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 88). 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 276).
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. 242
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Problem
Possible causes/consequences and
X XSolutions 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 272).
or
X Jump-start the vehicle (Y page 276).
or
X Consult a qualified specialist workshop. 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. Trailer towing*
Problem
Possible causes/consequences and
X XSolutions The ball coupling can-
not be locked.
The key cannot be
removed from the ball
coupling.
G
Risk of accident
The ball coupling is dirty.
The trailer coupling is damaged.
X Remove the ball coupling and clean it (Y page 203). If the ball
coupling still cannot be locked, remove the ball coupling. It must
no longer be used to tow a trailer, as safe operation is not guar-
anteed.
X Have the entire trailer coupling checked at a qualified specialist
workshop. 248
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Auxiliary heating/ventilation*
Display messages
Possible causes/consequences and
X
X Solutions FAIL The starter battery is not charged sufficiently or the system
is faulty.
X
Charge the starter battery.
X Make another attempt to switch on the auxiliary heating
using the remote control.
X Have the auxiliary heating checked at a qualified specialist
workshop. $ FAIL The signal transmission between the transmitter and the vehi-
cle is faulty.
X
Change your position in relation to the vehicle, moving
closer if necessary.
X Make another attempt to switch the auxiliary heating on or
off using the remote control. © FAIL There is not enough fuel in the fuel tank, or the auxiliary heat-
ing is faulty.
X
Refuel at the nearest filling station.
X Make another attempt to switch on the auxiliary heating
using the remote control.
X Have the auxiliary heating checked at a qualified specialist
workshop. Parking up the vehicle
Problem
Possible causes/consequences and
X
X Solutions The vehicle is to be left
parked up for longer
than four weeks. The battery can be damaged through exhaustive discharge.
X
Disconnect the battery (Y page 273) or connect to a trickle
charger.
i Have the battery checked at a qualified specialist workshop,
e.g. a Mercedes-Benz Service Centre. The vehicle is to be left
parked up for longer
than six weeks. Damage resulting from non-use may occur if the vehicle is parked
up for long periods.
X
Visit a qualified specialist workshop and seek advice. Troubleshooting
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X
Press resetting tool :downwards until
you hear the head restraint deployment
mechanism engage.
X Pull out resetting tool :.
X Firmly press back the head restraint cush-
ion 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. Key
Checking the batteries X
Press the &or% button.
The batteries are in working order if the
battery charge indicator lamp lights up
briefly. Changing batteries (key with KEYLESS
GO*) You require two CR 2025 3 V cell batteries.
X
Remove the emergency key element from
the key (Y page 250). X
Insert emergency key element :into the
opening in the key and push in the direction
of the arrow.
Battery tray ;is released.
X Pull battery tray ;out of the key. X
Remove old batteries :from the battery
tray.
X Insert the new batteries beneath the con-
tact spring with the positive pole facing
upwards. Use a lint-free cloth to do so.
X Push the battery tray back into the key
housing until the battery tray engages.
X Check the function of all key buttons on the
vehicle. Replacing batteries (key and remote control)
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Changing a battery (key without KEY-
LESS GO*) You require a CR 2025 3 V cell battery.
X Remove the emergency key element from
the key (Y page 250). 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.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp settings checked regu-
larly. Only use the types of bulbs specified 254
Changing bulbsPractical advice
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and stow it securely in the luggage com-
partment.
Vehicles with a spare wheel*:
X Use the bolts to secure the faulty wheel to
the exterior spare wheel bracket*.
i Do not activate the tyre pressure moni-
tor* until the defective tyre has been
removed from 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 pro-
tective measures when handling batteries. Risk of explosion
Fire, naked flames and
smoking are prohibited
when handling the battery.
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 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. 272
BatteryPractical advice
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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.
The battery is located under the front seat on
the right-hand side when viewed in the direc-
tion of travel. 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 P
! Always disconnect the battery in
the order described below. Never swap the
battery terminals. You may otherwise dam-
age the vehicle electronics. X
Firmly depress the parking brake and move
the transmission to position P.
X Position the right-hand front seat as far for-
wards as possible.
X Switch off all electrical consumers (e.g.
radio, blower, etc.). X
Get into the rear compartment.
X Remove battery cover :under the right-
hand front seat. X
Use a sharp knife on carpet ;to cut along
the dashed white line until you reach the
perforated part.
X Position the right-hand front seat at its rear-
most position. Battery
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