engine MERCEDES-BENZ GLK SUV 2008 Manual PDF

Problem
Possible causes/consequences and
X
X Solutions The fuel tank in a diesel
engine vehicle has
been run completely
dry and the engine will
not start. There is air in the fuel system.
X Fill the fuel tank (min. 5 litres).
X Turn the ignition on for at least 10 seconds. Turn the key to
position 2(Y page 61) in the ignition lock.
X Start the engine continuously for up to 10 seconds until it runs
smoothly.
If the engine does not start:
X Turn the ignition on again for at least 10 seconds. Turn the key
to position 2(Y page 61) in the ignition lock.
X Start the engine again continuously for up to 10 seconds until
it runs smoothly.
If the engine still won't start after three attempts:
X Consult a qualified specialist workshop. 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 Turn the key back to position 0(Y page 61)in the ignition lock
before the next starting attempt.
X Try to start the engine again (Y page 83). 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.
X Bleed the fuel system (Y page 206). Troubleshooting
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Problem
Possible causes/consequences and
X XSolutions The engine will not
start. You cannot hear
the starter motor oper-
ating. The on-board voltage is too low because the starter battery is too
weak or discharged.
X
Jump-start the vehicle (Y page 234).
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. Vehicles with a petrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is a malfunction in the engine electronics or a mechanical
component of the engine control unit.
X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it. The coolant tempera-
ture gauge shows a
value above 120 †.
The coolant warning
lamp may also light up
and a warning tone may
sound (Y
page 90). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 149). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct, the radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled suffi-
ciently.
X
If the coolant temperature is less than 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving. 208 TroubleshootingPractical advice
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Automatic transmission
Problem
Possible causes/consequences and
X
X Solutions The transmission has
problems shifting gear The transmission is losing oil.
X
Have the transmission checked at a qualified specialist work-
shop immediately. The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergency mode.
It is only possible to shift into
secondgear and reverse gear.
X Stop the vehicle.
X Turn the key to position 0(Y page 61) in the ignition lock.
X Wait at least 10 seconds before restarting the engine.
X Have the transmission checked at a qualified specialist work-
shop immediately. Parktronic*
Problem
Possible causes/consequences and
X
X Solutions Only the red segments
in the Parktronic warn-
ing display are lit. You
also hear a warning
tone for approximately
two seconds.
Parktronic is deactiva-
ted after approximately
20 seconds and the
indicator lamp in the
Parktronic button lights
up. Parktronic has malfunctioned and has switched itself off.
X
If problems persist, have Parktronic checked at a qualified spe-
cialist workshop. Only the red segments
in the Parktronic warn-
ing display are lit. Park-
tronic is deactivated
after approximately 20
seconds. The Parktronic sensors are dirty or there is interference.
X
Clean the Parktronic sensors (Y page 171).
X Switch the ignition back on. Troubleshooting
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Key
Problem
Possible causes/consequences and
X XSolutions You cannot lock or
unlock the vehicle
using the key. The key batteries are discharged or nearly discharged.
X
Point the tip of the key at the driver's door handle from close
range and try to unlock or lock the vehicle again.
If this does not work:
X Lock or unlock the vehicle using the emergency key element
(Y page 213).
X Check the key batteries (Y page 216) and replace them if nec-
essary ( Ypage 216). The key is faulty.
X
Lock or unlock the vehicle using the emergency key element
(Y page 213).
X Have the key checked at a qualified specialist workshop. The battery charge indi-
cator lamp of the key
does not go on during
the test. The key batteries are discharged.
X
Change the batteries ( Ypage 216). 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 232).
or
X Jump-start the vehicle (Y page 234).
or
X Consult a qualified specialist workshop. 212 TroubleshootingPractical advice
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Problem
Possible causes/consequences and
X
X Solutions The engine cannot be
started using the key. The steering lock is mechanically blocked.
X
Remove the key and reinsert it into the ignition lock. While doing
this, turn the steering wheel in both directions. Parking up the vehicle
Problem
Possible causes/consequences and
X
X Solutions 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.
X Disconnect the battery (Y page 233).Locking/unlocking in an emergency
Emergency key
If the vehicle can no longer be locked or
unlocked with the key, use the emergency
key element.
If you use the emergency key element to
unlock and open the driver's door, the anti-
theft alarm system* will be triggered
(Y page 54).
There are several ways to turn off the alarm:
X Press the %or& button on the key.
or
X Insert the key into the ignition lock.
If you unlock the vehicle using the emergency
key element, the fuel filler flap will not be
unlocked automatically. Releasing and removing the emergency
key element X
Push release catch :in the direction of
the arrow and at the same time remove
emergency key element ;from the key. Unlocking the vehicle
If the vehicle can no longer be unlocked cen-
trally with the key:
X Remove the emergency key element from
the key (Y page 213). Locking/unlocking in an emergency
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X
Hold wiper arm :and press wiper
blade ;in the direction of the arrow until
it releases.
X Remove wiper blade ;.
Fitting X
Place the new wiper blade ;onto wiper
arm :.
X Hold wiper arm :and press wiper
blade ;in the opposite direction to the
arrow until it engages.
X Make sure that wiper blade ;is seated
correctly.
X Position wiper blade ;parallel to wiper
arm :.
X Fold wiper arm :back onto the rear win-
dow. Flat tyre
Flat tyre equipment variants
Your vehicle may be equipped with:
R a TIREFIT kit (Y page 175)
R a collapsible emergency spare
wheel* (Y page 175) Preparing the vehicle
X Stop your vehicle as far away from traffic
as possible on solid, non-slippery, level
ground.
X Switch on the hazard warning lamps.
X Firmly depress the parking brake.
X Move the selector lever to P.
X All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area whilst a wheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier. X
Switch off the engine.
X Remove the key from the ignition lock.
X Get out of the vehicle.
X Close the driver's door.
X Place the warning triangle (Y page 174) at
a suitable distance. Observe legal require-
ments. Using the TIREFIT kit
You can use the TIREFIT kit to seal small
punctures, particularly those in the tyre tread.
You can use TIREFIT at outside temperatures
down to -20 †. G
Risk of accident
In the following situations, your safety is at
particular risk and tyre sealant is unable to
provide breakdown assistance:
R if there are cuts or punctures in the tyre
greater than 4 mm
R if the wheel rim is damaged
R if you have driven at very low tyre pressures
or on a flat tyre
Do not drive any further. Consult a qualified
specialist workshop 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 pur-
pose. In particular, work relevant to safety or
on safety-related systems must be carried out
at a qualified specialist workshop.
X Do not remove any foreign objects which
have penetrated the tyre, e.g. screws or
nails.
X Remove TIREFIT, the accompanying "max.
80 km/h" sticker and the electric air pump
from the stowage well underneath the lug-
gage compartment floor (Y page 175).222 Flat tyrePractical advice
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X
On downhill gradients: place chocks or
similar items under both wheels of the
other axle. Securing a vehicle on slight downhill slopes (exam-
ple illustration)
Raising the vehicle G
Risk of injury
The jack is designed only to raise and hold the
vehicle for a short time while a wheel is being
changed.
You must use axle stands if you are carrying
out work on the vehicle.
Make sure that the jack is placed on a firm,
non-slip, level surface. Do not use wooden
blocks or similar objects as a jack underlay.
Otherwise, the jack will not be able to achieve
its load-bearing capacity due to the restricted
height.
Do not start the engine at any time while a
wheel is being changed.
Do not lie under the vehicle when it is being
supported by the jack. If you do not raise the
vehicle as described, it could slip off the jack
(e.g. if the engine is started or if a door or the
tailgate is opened or closed) and you could be
seriously injured. G
Risk of accident
If you fail to position the jack correctly, the
vehicle may: R
slip off the jack
R injure you or others
R be damaged
Thus, it is important to make sure that the jack
is positioned correctly in the respective jack-
ing points. Before positioning the jack,
remove any dirt that may have collected in the
jacking points. X
Using wheel wrench 1, loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew the bolts com-
pletely. 228 Flat tyrePractical advice
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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 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 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.
! Switch off the engine and remove the key
before disconnecting the terminal clamps 232 BatteryPractical advice
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from the battery. Otherwise, you may
destroy electronic components, such as
the alternator.
i Mercedes-Benz recommends that you
have all 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 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
; Positive terminal
= Negative terminal
? Breather hose Disconnecting the battery
G
Risk of accident
If the battery is disconnected:
R the brake boosting effect will not be avail-
able. Then, greater braking force will be
required and brake pedal travel will be lon-
ger. If necessary, depress the brake pedal
with maximum force.
R you will no longer be able to turn the key in
the ignition lock.
R the selector lever is locked in position P.!
Always disconnect the battery in
the order described below. Never swap the
terminal clamps. Otherwise, you may dam-
age the vehicle electronics.
X Apply the parking brake and move the
selector lever to P.
X Switch off all electrical consumers (e.g.
radio, blower, etc.).
X Turn the key to position 0(Y page 61) in
the ignition lock and remove it.
X Open the bonnet. X
Release clamps ;on filter box :.
X Remove 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 233).
X Loosen the bolt which holds the battery in
place.
X Remove the battery. Battery
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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 charg-
ing 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.
! 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. However, the bat-
tery must always be disconnected first.
! 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 233) in
reverse order. 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 (e.g.
radio, blower, etc.).
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 on the side of the battery.
X Close the bonnet.
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 102).
R reset the panorama sliding sun-
roof* (Y page 127)
R reset the function for folding the exterior
mirrors in/out automatically* by folding
the mirrors out once (Y page 68). Jump-starting
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 have a sufficient
cross-section and insulated terminal
clamps. 234 Jump-startingPractical advice
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