ABS MERCEDES-BENZ GL SUV 2009 User Guide
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Page 182 of 309
Tyres and wheels
Points to remember
! For safety reasons, Mercedes-Benz rec-
ommends that you only use tyres, wheels
and accessories which have been approved
by Mercedes-Benz specifically for your
vehicle. These tyres have been specially
adapted for use with the control systems,
such as ABS or ESP ®
, and are marked as
follows:
R MO = Mercedes-Benz Original
R MOE = Mercedes-Benz Original Exten-
ded* (tyres with run-flat characteristics)
Only use Mercedes-Benz Original Extended
tyres* on wheels that have been specifi-
cally approved by Mercedes-Benz.
If you use other tyres, wheels and acces-
sories, Mercedes-Benz cannot accept any
responsibility for damage that may result
from this. Further information about tyres,
wheels and approved combinations can be
obtained from any Mercedes-Benz Service
Centre.
! If you fit tyres other than those tested and
recommended by Mercedes-Benz, charac-
teristics such as handling, noise levels and
fuel consumption, etc. may be adversely
affected. In addition, when driving with a
load, tyre dimensional variations could
cause the tyres to come into contact with
the bodywork and axle components. This
could result in damage to the tyres or the
vehicle.
! Retreaded tyres are neither tested nor
recommended by Mercedes-Benz, since
previous damage cannot always be detec-
ted on retreaded tyres. As a result,
Mercedes-Benz cannot guarantee vehicle
safety if retreaded tyres are fitted. Do not
fit used tyres if you have no information
about their previous usage. G
Risk of accident
Tyres, wheels or accessories which have not
been approved by Mercedes-Benz for your
vehicle or are not used as they should be, can
impair driving safety. As a result, you could
cause an accident. Before purchasing and
using them, enquire about their suitability,
legal stipulations and factory recommenda-
tions at a Mercedes-Benz Service Centre.
Modification work on the brake system and
wheels is not permitted, nor is the use of
spacer plates or brake dust shields. This inva-
lidates the General Operating Permit for the
vehicle.
Notes on selecting, fitting and replac-
ing tyres R
Only fit tyres and wheels of the same type
and make.
R Only fit tyres of the correct size onto the
wheels.
R After fitting new tyres, run them in at mod-
erate speeds for the first 100 km as they
only reach their full performance after this
distance.
R Fit new tyres on the front wheels first if
tyres of the same size are required on the
front and rear wheels.
R Replace the tyres after six years at the lat-
est, regardless of wear. This also applies to
the spare wheel*.
R Do not drive with tyres which have too little
tread depth, as this significantly reduces
the traction on wet roads (aquaplaning).
! Store tyres that are not being used in a
cool, dry and preferably dark place. Protect
the tyres against oil, grease, petrol and die-
sel.
Notes on regularly inspecting wheels
and tyres R
Regularly check the wheels and tyres of
your vehicle for damage (e.g. cuts, punctu- Tyres and
wheels
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Page 188 of 309
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.
The wheels could work loose if they are not
tightened to a torque of 150 Nm.
For safety reasons, Mercedes-Benz recom-
mends that you only use wheel bolts of the
correct size which have been approved for
Mercedes-Benz vehicles.
The wear patterns on the front and rear tyres
differ, depending on the operating conditions.
Interchange the wheels before a clear wear
pattern has formed on the tyres. Front tyres
typically wear more on the shoulders and the
rear tyres in the centre.
On vehicles that have the same size front and
rear wheels you can interchange the wheels
every 5,000 km to 10,000 km depending on
the degree of tyre wear. Do not reverse the
direction of tyre rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is interchanged. Check the tyre pressure and,
if necessary, restart the tyre pressure loss
warning system or the tyre pressure moni-
tor*.
! On vehicles fitted with a tyre pressure
monitor*, electronic components are loca-
ted in the wheel.
Tyre-fitting tools should not be applied in
the area of the valve, as this could damage
the electronic components.
Always have the wheels interchanged/
changed at a qualified specialist workshop,
e.g. a Mercedes-Benz Service Centre.
i Vehicles with a tyre pressure monitor*
If the positions of the wheels on the vehicle
are changed, the tyre pressure may be tem-
porarily displayed in the wrong position.
This is rectified after a few minutes of driv-
ing; the tyre pressures are then displayed
in the correct positions. Winter driving
Points to remember
Have your vehicle winterproofed at a qualified
specialist workshop, e.g. at a Mercedes-Benz
Service Centre, at the onset of winter.
Observe the notes in the "Changing a wheel"
section (Y page 184). Winter tyres
At temperatures below +7 ˚C always use all-
weather tyres or winter tyres and always use
winter tyres in winter road conditions. Only
winter tyres displaying the isnowflake
symbol in addition to the M+S marking pro-
vide optimum grip in wintry road conditions.
Only these tyres will allow the ABS and
ESP ®
driving systems to function optimally in
winter, as these tyres have been designed
specifically for driving in snow.
Use winter tyres of the same make and tread
on all wheels to maintain safe handling char-
acteristics. G
Risk of accident
Winter tyres with a tread depth of less than
4 mm must be replaced immediately. They are
no longer suitable for winter use and can no
longer provide sufficient grip. This could
cause you to lose control of your vehicle and
cause an accident.
Always observe the maximum permissible
speed specified for the winter tyres you have
fitted. If you fit winter tyres which have a
lower maximum permissible speed than that
of the vehicle, affix an appropriate warning
sign in the driver's field of vision. This can be
obtained at a qualified specialist workshop,
e.g. from a Mercedes-Benz Service Centre.
Under these circumstances, you should also
restrict the maximum speed of the vehicle
using permanent Speedtronic 27
to the maxi-
27 Only available for certain countries. Winter driving
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Page 192 of 309
G
Risk of accident
Grains of sand, particles of dirt and other
abrasive materials can enter the brake sys-
tem. This can lead to excessive wear and
unpredictable braking efficiency.
After the brakes have been exposed to dirty
conditions, have them checked and cleaned
at a qualified specialist workshop, e.g. a
Mercedes-Benz Service Centre. Otherwise,
there is a risk that braking power may be
insufficient in the event of an emergency, or
that braking efficiency may be unpredictable.
Read this section before driving your vehicle
off-road. Practise by travelling over more gen-
tle off-road terrain first.
The following driving systems are specially
adapted to off-road driving:
R LOW RANGE off-road gear (Y page 114)
R off-road ABS (Y page 50)
R off-road 4-ETS (Y page 53)
R off-road ESP ®
(Y page 52)
R differential locks (Y page 116)
R DSR (Downhill Speed Regulation)
(Y page 113) Off-road driving
G
Risk of accident
Damage to the vehicle creates the risk of an
accident for yourself and other road users. If
in doubt, have your vehicle checked at a quali-
fied specialist workshop which has the nec-
essary specialist knowledge and tools to carry
out the work required. Mercedes-Benz rec-
ommends that you use a Mercedes-Benz
Service Centre for this purpose. H
Environmental note
Protection of the environment is of primary
importance. Treat nature with respect.
Observe all prohibiting signs. General information R
Stop your vehicle and, if necessary, select
the LOW RANGE off-road gear
(Y page 114) before driving off-road.
R Select a vehicle level suitable for the off-
road terrain. Make sure there is always suf-
ficient ground clearance to prevent dam-
age to the vehicle.
R Check that items of luggage and loads are
stowed safely and are well secured
(Y page 156).
R Always keep the engine running and in gear
when driving on a downhill gradient. Acti-
vate DSR.
R Drive slowly and evenly, if necessary at a
walking pace.
R Ensure that the wheels are in contact with
the ground at all times.
R Drive with extreme care on unknown off-
road routes where visibility is poor. For
safety reasons, get out of the vehicle first
and survey the off-road route.
R Check the depth of water before fording
rivers and streams.
R Look out for obstacles such as rocks, holes,
tree stumps and furrows.
R Always keep the side windows and the slid-
ing /tilting sunroof* closed during the jour-
ney.
R Do not stray from marked routes or paths.
i Information about retrofitting special all-
terrain tyres is available from any
Mercedes-Benz Service Centre.
Checklist before driving off-road X
Engine oil level: check the engine oil and
top it up if necessary.
X Vehicle toolkit: check that the jack is
working and make sure you have the wheel-
brace, a robust tow cable and a folding
spade in the vehicle. Off-road driving
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Page 194 of 309
R
Accelerate gently and make sure that the
wheels are gripping.
R Avoid high engine speeds, except when
driving on sandy and muddy routes with
high driving resistance.
R Select a shift range appropriate to the gra-
dient.
R Before tackling steep downhill gradients,
select shift range 1.
i The vehicle will not roll backwards when
stopping on an uphill gradient if:
R the automatic transmission is in position
D.
R you have selected the LOW RANGE off-
road gear.
Depress the brake pedal when stopping on
steep uphill gradients. Hill start assist will
aid you when you pull away again
(Y page 90).
Maximum gradient-climbing capability On good road surfaces and with the LOW
RANGE off-road gear selected, the full gradi-
ent-climbing capability is available.
i
If the load on the front axle is reduced
when pulling away on a steep uphill slope,
the front wheels have a tendency to spin.
4ETS recognises this and brakes the
wheels accordingly. The rear wheel torque
is increased and it is easier to pull away.
Brow of hill When driving up an uphill gradient, slightly
reduce pressure on the accelerator immedi-
ately before reaching the brow of the hill.
Make use of the vehicle’s own impetus to
travel over the brow.
This style of driving prevents: R
the vehicle from lifting off the ground on the
brow of a hill
R loss of traction
R the vehicle from travelling too quickly down
the other side
Driving downhill R
Drive slowly.
R Do not drive at an angle down steep
inclines. Steer into the line of fall and drive
with the front wheels aligned straight. Oth-
erwise, the vehicle could slip sideways, tip
and overturn.
R Before tackling steep downhill gradients,
select shift range 1.
R Activate DSR. If this is not sufficient, brake
gently. When doing so, make sure that the
vehicle is facing in the direction of the line
of fall.
R Check that the brakes are working normally
after a long downhill stretch.
i Off-road ABS is activated when the
LOW RANGE off-road gear is selected.
At speeds below 30 km/h, the front wheels
lock cyclically during braking. The digging-
in effect achieved in the process reduces
the stopping distance when driving off-
road. The steerability of the vehicle is con-
siderably reduced when the wheels lock. Driving over obstacles
Observe the following rules when driving over
tree stumps, large stones and other obsta-
cles:
R Select the LOW RANGE off-road gear
(Y page 114).
R Avoid high engine speeds.
R Select shift range 1. Off-road driving
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The following tables contain all the display
messages. Text messages
G
Risk of accident and injury
The operating safety of your vehicle could be compromised if service work is carried out improp-
erly. You could lose control of the vehicle and cause an accident. Safety systems may also not
be able to protect you or others as intended.
Always have maintenance work carried out at a qualified specialist workshop. The workshop must
have 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 systems must be carried out at a qualified specialist
workshop. Display messages
Possible causes/consequences and
X
X Solutions 120 km/h Maximum
speed
exceeded
The maximum speed has been exceeded
32
.
X Drive more slowly. ABS ABS, ESP
unavaila‐
ble See
Owner's
Manual
G
Risk of accident
ABS (Anti-lock Brake System) and ESP ®
(Electronic Stability
Program) and therefore also PRE-SAFE ®
are temporarily
unavailable. The self diagnosis function might not be com-
plete, for example.
BAS (Brake Assist) is also deactivated.
The brake system continues to function normally, but without
the functions listed above.
X Carefully drive a short, gently winding stretch of road at a
speed above 20 km/h.
If the display message disappears, ABS and ESP ®
are avail-
able again. G
Risk of accident
ABS, ESP ®
and therefore also PRE-SAFE ®
are unavailable due
to undervoltage. BAS has also been deactivated.
The brake system continues to function normally, but without
the functions listed above.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 32
Only for certain countries. 212
Display messagesPractical advice
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Display messages
Possible causes/consequences and
X
X Solutions ABS ABS, ESP
inopera‐
tive See
Owner's
Manual
G
Risk of accident
ABS, ESP ®
and therefore also PRE-SAFE ®
are unavailable due
to a malfunction. BAS has also been deactivated.
The brake system continues to function normally, but without
the functions listed above.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. Refill
AdBlue at
workshop See Own‐
er's Man‐
ual
The AdBlue
®
level has fallen below the reserve range. A warn-
ing tone also sounds.
X Have the AdBlue ®
reservoir filled as soon as possible at a
qualified specialist workshop. Refill
AdBlue at
workshop No start
in: XXXX
km
The AdBlue
®
level is only sufficient for the indicated route. A
warning tone also sounds.
X Have the AdBlue ®
reservoir filled as soon as possible at a
qualified specialist workshop. Refill
AdBlue at
workshop Engine
start not
possible
The AdBlue
®
tank is empty. A warning tone also sounds. You
can no longer start the engine.
X Consult a qualified specialist workshop immediately. Check
AdBlue See Own‐
er's Man‐
ual
The AdBlue
®
system is malfunctioning. A warning tone also
sounds.
X Visit a qualified specialist workshop. AdBlue No start
in: XXXX
km
The AdBlue
®
system is malfunctioning. A warning tone also
sounds.
X Visit a qualified specialist workshop immediately. AdBlue Engine
start not
possible
The AdBlue
®
system is malfunctioning. A warning tone also
sounds. You can no longer start the engine.
X Consult a qualified specialist workshop immediately. Auxiliary
battery Malfunc‐
tion The auxiliary battery for the automatic transmission is no lon-
ger being charged.
X
Visit a qualified specialist workshop at the next opportunity.
X Until then, set the automatic transmission to position P
before you switch off the engine.
X Before leaving the vehicle, apply the parking brake. Display
messages
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Display messages
Possible causes/consequences and
X
X Solutions # The battery is not being charged.
Possible causes are:
R
a faulty alternator
R a torn poly-V-belt
R a malfunction in the electronics
X Pull over and stop the vehicle safely and switch off the
engine, paying attention to road and traffic conditions.
X Open the bonnet.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise over-
heat.
X Switch off the engine.
X Consult a qualified specialist workshop.
If the poly-V-belt is OK:
X Visit a qualified specialist workshop. # Battery/
Alterna‐
tor Stop
vehicle The battery is faulty.
X
Pull over and stop the vehicle safely, paying attention to
road and traffic conditions. Do not continue driving under
any circumstances.
X Consult a qualified specialist workshop. # Brake wear The brake pads/linings have reached their wear limit.
X
Visit a qualified specialist workshop. J EBV, ABS,
ESP inop‐
erative
See Own‐
er's Man‐
ual
G
Risk of accident
EBV (Electronic Brake Force Distribution), ABS (Anti-lock
Brake System), ESP ®
(Electronic Stability Program) and there-
fore PRE-SAFE ®
are unavailable due to a fault. BAS (Brake
Assist) is also deactivated.
The brake system continues to function normally, but without
the functions listed above.
X Drive on carefully.
X Visit a qualified specialist workshop immediately. 220
Display
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Warning and indicator lamps in the instrument cluster
Problem
Possible causes/consequences and
X
X Solutions !
The yellow ABS
warning lamp is
lit while the
engine is run-
ning. G
Risk of accident
ABS (Anti-lock Brake System) is deactivated due to a fault. ABS
(Anti-lock Brake System) and ESP ®
(Electronic Stability Program)
and also PRE-SAFE ®
are therefore temporarily unavailable.
The brake system continues to function normally, but without the
functions listed above. Therefore, the wheels could lock if you
brake hard.
X Observe the additional messages in the multi-function display
(Y page 211).
X Drive on carefully.
X Visit a qualified specialist workshop. !
The yellow ABS
warning lamp is
lit while the
engine is run-
ning. G
Risk of accident
The on-board voltage is too low. ABS has been deactivated due to
undervoltage.
Therefore, ESP ®
, BAS and PRE-SAFE ®
are also deactivated.
The brake system continues to function normally, but without the
functions listed above. Therefore, the wheels could lock if you
brake hard.
X Switch off consumers that are not required, e.g. rear window
heating or interior lighting.
ABS will be available again as soon as the vehicle's electrical
system voltage increases. d
J
!
The yellow ESP
®
warning lamp,
the red brake
system warning
lamp and the
yellow ABS
warning lamp
light up while the
engine is run-
ning. A warning
tone also
sounds. G
Risk of accident
EBV is faulty. ABS, Brake Assist, ESP ®
and PRE-SAFE ®
are there-
fore no longer available. The brake system continues to function
normally, but without the functions listed above. Therefore, the
wheels could lock if you brake hard.
X Drive on carefully.
X Visit a qualified specialist workshop. Troubleshooting
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Page 257 of 309
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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Coolant
The coolant is a mixture of water and anti-
freeze/corrosion inhibitor. It performs the
following tasks:
R anti-corrosion protection
R antifreeze protection
R raising the boiling point
i When the vehicle is first delivered, it is
topped up with a coolant that will ensure
adequate antifreeze and corrosion protec-
tion.
! Only top up with coolant that has been
premixed with the desired antifreeze pro-
tection. You could otherwise damage the
engine.
Further information on coolants and on fill-
ing can be found in the Mercedes-Benz
Specifications for Service Products, Sheet
310.1, or at any Mercedes-Benz Service
Centre.
! Always use a suitable coolant mixture,
even in countries where high temperatures
prevail.
Otherwise, the cooling system will not be
sufficiently protected from corrosion, and
the boiling point will be too low.
If antifreeze/corrosion inhibitor is present in
the correct concentration, the boiling point of
the coolant will be around 130 †.
The antifreeze/corrosion inhibitor concentra-
tion in the cooling system should:
R be at least 50%. This will protect the cooling
system against freezing down to around
-37 †.
R not exceed 55% (antifreeze protection
down to -45 †); otherwise, heat will not be
effectively dissipated
If the vehicle has lost coolant, top it up with
equal amounts of water and antifreeze/cor-
rosion inhibitor. Mercedes-Benz recom-
mends an antifreeze/corrosion inhibitor
which has been approved for Mercedes-Benz. !
The cooling system contains a supply
which must be renewed after 15 years, or
after 250, 000 km at the latest.
The warranty is only valid if you top up with
an antifreeze/corrosion inhibitor which
has been approved by Mercedes-Benz and
if the recommended mixture ratio is
observed. Brake fluid
Over a period of time, the brake fluid absorbs
moisture from the air; this lowers its boiling
point. G
Risk of accident
If the boiling point of the brake fluid is too low,
vapour pockets may form in the brake system
when the brakes are applied hard (e.g. when
driving downhill). This would impair braking
efficiency.
Have the brake fluid renewed every two years
with a brake fluid that has been approved by
Mercedes-Benz and have this confirmed in
the Service Booklet.
i There is usually a notice in the engine
compartment to remind you when the next
brake fluid change is due. Windscreen washer system
The headlamp cleaning system* and wind-
screen washer system are both supplied from
the washer fluid reservoir.
Further information on windscreen washer
fluid and its mixing ratio ( Ypage 178). Service products and capacities
291Technical data
* optional
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