engine MERCEDES-BENZ GL 2014 Owners Manual

Safety systems
ProblemPossible causes/consequences andPPSolutions
'(USA only)
M(Canada only)
The red brake system
warning lamp comes on
while the engine is
running. A warning tone
also sounds.
GWARNING
The brake boosting effect is malfunctioning and the braking
characteristics may be affected.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 188).
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction
display.
'(USA only)
M(Canada only)
The red brake system
warning lamp comes on
while the engine is
running. A warning tone
also sounds.
There is not enough brake fluid in the brake fluid reservoir.
GWARNING
The braking effect may be impaired.
There is a risk of an accident.
XPull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
XSecure the vehicle against rolling away (Ypage 188).
XDo not add brake fluid. Adding more will not remedy the
malfunction.
XConsult a qualified specialist workshop.
XObserve the additional display messages in the multifunction
display.
326Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andPPSolutions
%
The yellow ABS warning
lamp is lit while the
engine is running.
ABS (Anti-lock Braking System) is deactivated due to a
malfunction. For this reason, BAS (Brake Assist), BAS PLUS,
ESP®(Electronic Stability Program), PRE-SAFE®, PRE-SAFE®
Brake, COLLISION PREVENTION ASSIST, the HOLD function, hill
start assist, crosswind driving assistance and ESP®trailer
stabilization are also deactivated, for example.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
If the ABS control unit is faulty, there is also a possibility that other
systems, such as the navigation system or the automatic
transmission, will not be available.
Warning and indicator lamps in the instrument cluster327
On-board computer and displays
Z

ProblemPossible causes/consequences andPPSolutions
%
The yellow ABS warning
lamp is lit while the
engine is running.
ABS is temporarily unavailable. Therefore, BAS, BAS PLUS, ESP®,
EBD (electronic brake force distribution), PRE-SAFE®,
PRE-SAFE®Brake, COLLISION PREVENTION ASSIST, the HOLD
function, hill start assist, crosswind driving assistance and ESP®
trailer stabilization, for example, are also deactivated.
ATTENTION ASSIST is deactivated.
Possible causes are:
Rself-diagnosis is not yet complete.
Rthe on-board voltage may be insufficient.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is a risk of an accident.
XCarefully drive a suitable distance, making slight steering
movements at a speed above 12 mph (20 km/h).
The functions mentioned above are available again when the
warning lamp goes out.
If the warning lamp is still on:
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
328Warning and indicator lamps in the instrument cluster
On-board computer and displays

ProblemPossible causes/consequences andPPSolutions
%
The yellow ABS warning
lamp is lit while the
engine is running. A
warning tone also
sounds.
EBD is malfunctioning. Therefore, ABS, BAS, BAS PLUS, ESP®,
PRE-SAFE®, PRE-SAFE®Brake, COLLISION PREVENTION ASSIST,
the HOLD function, hill start assist, crosswind driving assistance
and ESP®trailer stabilization, for example, are also not available.
ATTENTION ASSIST is deactivated.
GWARNING
The brake system continues to function normally, but without the
functions listed above. The front and rear wheels could therefore
lock if you brake hard, for example.
The steerability and braking characteristics may be severely
affected. The braking distance in an emergency braking situation
can increase.
If ESP®is not operational, ESP®is unable to stabilize the vehicle.
There is an increased risk of skidding and an accident.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XVisit a qualified specialist workshop.
'(USA only)
M(Canada only)

ProblemPossible causes/consequences andPPSolutions
I(USA only)
$(Canada only)
The red electric parking
brake indicator lamp
flashes or lights up
and/or
$
warning lamp for the
electric parking brake
lights up.
XObserve the additional display messages in the multifunction
display.
u
The red SRS warning
lamp is lit while the
engine is running.
There is a malfunction in the SRS (Supplemental Restraint
System).
GWARNING
The air bags or Emergency Tensioning Devices may either be
triggered unintentionally or, in the event of an accident, may not
be triggered.
There is an increased risk of injury.
XObserve the additional display messages in the multifunction
display.
XDrive on carefully.
XHave SRS checked at a qualified specialist workshop
immediately.
For further information about SRS, see (Ypage 43).
332Warning and indicator lamps in the instrument cluster
On-board computer and displays

Engine
ProblemPossible causes/consequences andPPSolutions

ProblemPossible causes/consequences andPPSolutions
XObserve the additional display messages in the multifunction
display.
XPull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
XSecure the vehicle against rolling away (Ypage 188).
XLeave the vehicle and keep a safe distance from the vehicle until
the engine has cooled down.
XCheck the coolant level and add coolant, observing the warning
notes (Ypage 373).
XIf you need to add coolant more often than usual, have the
engine coolant system checked.
XMake sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
XAt coolant temperatures below 248 ‡ (120 †), drive to the
nearest qualified specialist workshop.
XAvoid subjecting the engine to heavy loads, e.g. driving in
mountainous terrain, and stop-and-go traffic.
Driving systems
ProblemPossible causes/consequences andPPSolutions

Useful information
iThis Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
iRead the information on qualified
specialist workshops: (Ypage 28).
Stowage areas
Loading guidelines
GWARNING
If objects, luggage or loads are not secured or
not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is a risk of injury,
particularly in the event of sudden braking or
a sudden change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. If the tailgate
is open when the engine is running,
particularly if the vehicle is moving, exhaust
fumes could enter the passenger
compartment. There is a risk of poisoning.
Turn off the engine before opening the
tailgate. Never drive with the tailgate open.
The gross vehicle weight (GVW) is the vehicle
weight including fuel, vehicle tool kit, spare
wheel, installed accessories, vehicle
occupants and luggage/cargo.
The gross load limit and the gross vehicle
weight rating (GVWR) for your vehicle must
never be exceeded. The gross load limit and
the GVWR are specified on the vehicle
identification plate on the B-pillar of the
driver's door (Ypage 415).
The load must also be distributed so that the
weight on each axle never exceeds the gross
axle weight rating (GAWR) for the front and
rear axles. The specifications for GVWR and
GAWR are on the vehicle identification plate
on the B-pillar of the driver's door
(Ypage 415).
Observe the notes on the loading the vehicle
(Ypage 415).
The handling characteristics of a laden
vehicle are dependent on the distribution of
the load within the vehicle. For this reason,
you should observe the following notes when
transporting a load:
RNever exceed the maximum permissible
gross vehicle weight or the gross axle
weight rating of the vehicle (including
occupants).
RThe cargo compartment is the preferred
place to carry objects.
RPosition heavy loads as far forwards as
possible and as low down in the cargo
compartment as possible.
RThe load must not protrude above the
upper edge of the seat backrests.
RAlways place the load against the rear or
front seat backrests. Make sure that the
seat backrests are securely locked into
place.
RAlways place the load behind unoccupied
seats if possible.
RUse the cargo tie down rings and the parcel
nets to transport loads and luggage.
RUse cargo tie-down rings and fastening
materials appropriate for the weight and
size of the load.
RHook in the cargo net when loading.
RSecure the load with sufficiently strong and
wear-resistant tie-downs. Pad sharp edges
for protection.
340Stowage areas
Stowage and features

the on-board voltage is too low, the power
to the sockets is automatically cut. This
ensures that there is sufficient power to
start the engine.
Socket in the front-compartment center
console
!The socket is not suitable for operating
the tire inflation compressor.
XTo open:slide coverCto its foremost
position.
XLift up the cover of socketD.
XTo close:pull coverCback as far as it will
go.
Socket in the rear-compartment center
console
XLift up the cover of socketC.
Vehicles with the Rear Seat Entertainment
System have two sockets in the center
console in the rear compartment.
Socket in the cargo compartment
XLift up the cover of socketC.
115 V socket
Important safety notes
GDANGER
When a suitable device is connected, the
115 V power socket will be carrying a high
voltage. You could receive an electric shock
if the connector cable or the 115 V power
socket is pulled out of the trim or is damaged
or wet. There is a risk of fatal injury.
RUse only connector cables that are dry and
free of damage.
RWhen the ignition is off, make sure that the
115 V power socket is dry.
RHave the 115 V power socket checked or
replaced immediately at a qualified
specialized workshop if it is damaged or has
been pulled out of the trim.
RNever plug the connector cable into a
115 V power socket that is damaged or has
been pulled out of the trim.
GDANGER
If you reach into the power socket or plug
inappropriate devices into the power socket,
you could receive an electric shock. There is
a risk of fatal injury.
Only connect appropriate devices to the
power socket.
Features353
Sto wage an d features
Z

Problems with the 115 V power socket
ProblemPossible causes/consequences andPPSolutions
The warning lamp on
the 115 V power socket
is not lit.
The on-board voltage is too low because the battery is too weak.
XStart the engine.
or
XCharge the battery (Ypage 394).
If the indicator lamp still does not light up:
XVisit a qualified specialist workshop.
The temperature of the DC/AC converter is temporarily too high.
XRemove the electronic device connector from the 115 V socket.
XLet the DC/AC converter cool down.
If the indicator lamp still does not light up after cooling down the
converter:
XVisit a qualified specialist workshop.
You have connected an electronic device that has a constant
nominal power of less than 150 watts, but a very high switch-on
current. This device will not work. If you connect such a device,
the 115 V power socket will not supply it with power.
XConnect a suitable device.
mbrace
General notes
You must have a license agreement to
activate the mbrace service. Make sure that
your system is activated and operational. To
log in, press the