2015 MERCEDES-BENZ GLC SUV Owners Manual

Problems with the fuel and fuel tank
Problem
Possible causes/consequences and
M
MSolutions Fuel is leaking from the
vehicle. G
WARNING
The fuel line or the fuel tank is faulty.
There is a risk of fire or explosion.
X Apply the electric parking brake.
X Switch off the engine.
X Remove the key from the ignition lock.
or, on vehicles with KEYLESS-GO start function or KEYLESS ‑GO:
X Open the driver's door.
The on-board electronics now have status 0. This is the same as
the key having been removed.
X Do not restart the engine under any circumstances.
X Consult a qualified specialist workshop. The engine does not
start. The fuel tank of a vehicle with a diesel engine has been run com-
pletely dry.
X Refuel the vehicle with at least 5 litres of diesel.
X Turn the ignition on for approximately ten seconds
(Y page 187).
X Start the engine continuously for a maximum of ten seconds
until it runs smoothly.
If the engine does not start:
X Turn the ignition on again a maximum of ten seconds
(Y page 187).
X Start the engine again continuously for a maximum of ten sec-
onds until it runs smoothly.
If the engine does not start after three attempts:
X Consult a qualified specialist workshop. The fuel filler flap can-
not be opened. The fuel filler flap is not unlocked.
X Unlock the vehicle (Y page 95). The key battery is discharged or nearly discharged.
X Unlock the vehicle using the emergency key element
(Y page 97). The fuel filler flap is unlocked, but the opening mechanism is jam-
med.
X Consult a qualified specialist workshop. 206
RefuellingDriving and parking

AdBlue
®
(BlueTEC vehicles only)
General notes To function properly, BlueTEC exhaust gas
aftertreatment must be operated with the
reducing agent AdBlue ®
.
When the supply of AdBlue ®
is down to
approximately 3.0 litres, the Refill
Refill
AdBlue See Owner’s Manual
AdBlue See Owner’s Manual message is
shown in the multifunction display.
If you drive the vehicle faster than 15 km/h
after topping up, the Refill AdBlue See Refill AdBlue See
Owner’s Manual
Owner’s Manual message goes out after
approximately one minute.
When the AdBlue ®
supply drops to a mini-
mum, the Refill AdBlue No start
Refill AdBlue No start
in ... mi in ... mi message is shown in the multi-
function display.
When the Refill AdBlue No start
Refill AdBlue No start
in ... mi
in ... mi message is shown in the multi-
function display, you can still drive the vehicle
over the distance shown. If the AdBlue ®
is not
topped up, you will subsequently be unable
to start the engine . If theRefill AdBlue Refill AdBlue
Start not possible
Start not possible message appears in
the multifunction display and the engine does
not start, you must top up AdBlue ®
.
X Add at least 3.5 l of AdBlue ®
.
X Switch on the ignition for at least 60 sec-
onds.
X Start the engine.
i You can also have the AdBlue ®
tank refil-
led at a qualified specialist workshop.
Before driving your vehicle outside Europe,
have the AdBlue ®
supply checked at a quali-
fied specialist workshop.
Further information about BlueTEC exhaust
gas aftertreatment and about AdBlue ®
can
be obtained from any Mercedes-Benz Service Centre. Important safety notes AdBlue
®
is a water-soluble fluid for the
exhaust gas aftertreatment of diesel engines.
It is:
R non-toxic
R colourless and odourless
R non-flammable
If you open the AdBlue ®
tank, small amounts
of ammonia vapour may be released.
Ammonia vapours have a pungent odour and
are particularly irritating to the skin, to
mucous membranes and to the eyes. You may experience a burning sensation in your eyes,
nose and throat. You may also experience
coughing and watery eyes.
Do not inhale any ammonia vapours that may
be released. Only fill the AdBlue ®
tank in well-
ventilated areas.
Do not swallow AdBlue ®
or let it come into
contact with skin, eyes or clothing. Keep
AdBlue ®
away from children.
If you or others come into contact with
AdBlue ®
, observe the following:
R immediately rinse AdBlue ®
off your skin
with soap and water.
R if AdBlue ®
comes into contact with your
eyes, immediately rinse them thoroughly
with clean water. Seek medical attention
immediately.
R if AdBlue ®
is swallowed, immediately rinse
your mouth out thoroughly. Drink plenty of water. Seek medical attention immedi-
ately.
R change immediately out of clothing that
has come into contact with AdBlue ®
.
! Only use AdBlue ®
in accordance with
ISO 22241. Do not mix any additives with
AdBlue ®
, and do not dilute AdBlue ®
with
water. This may destroy the BlueTEC
exhaust gas aftertreatment system.
! In order to fill the AdBlue ®
tank, the vehi-
cle must be parked on a level surface. The
AdBlue ®
tank can only be filled as intended Refuelling
207Driving and pa rking Z

with the vehicle parked on a level surface.
Fluctuations in capacity will thus be avoi-
ded. Filling a vehicle standing on an uneven surface is not permitted. There is a danger
of overfilling, which can cause damage to
BlueTEC exhaust gas aftertreatment com-
ponents.
! Surfaces which have come into contact
with AdBlue ®
while refilling should be
rinsed immediately with water, or remove
AdBlue ®
with a moist cloth and cold water.
If AdBlue ®
has already crystallised, use a
sponge and cold water to clean the area.
AdBlue ®
residue crystallises after a certain
amount of time and soils the affected sur-
faces.
! AdBlue ®
is not a fuel additive and must
not be added to the fuel tank. If AdBlue ®
is
added to the fuel tank, this can lead to
engine damage.
Have the AdBlue ®
tank refilled at a qualified
specialist workshop. However, you can also
top up the AdBlue ®
tank:
R at a filling station with an AdBlue ®
filling
pump
R with AdBlue ®
refill bottles
R with an AdBlue ®
refill canister
When the pump nozzle switches off automat- ically during filling at a filling pump, the
AdBlue ®
tank has been completely filled. Do
not fill the AdBlue ®
tank any further. AdBlue ®
may leak out.
To avoid transporting already opened refill
containers in the vehicle, completely empty
refill bottles or canisters when filling the
AdBlue ®
tank, if possible.
Further information on AdBlue ®
(Y page 484). Opening the AdBlue
®
filler cap X
Switch the ignition off.
X Press the fuel filler flap in the direction of
arrow :.
The fuel filler flap swings up.
X Turn blue AdBlue ®
fuel filler cap ;anti-
clockwise and remove it.
AdBlue ®
filler cap ;is secured with a plas-
tic strip.
i The fuel filler flap is unlocked or locked
automatically when you unlock or lock the
vehicle.
AdBlue ®
refill canisters !
Do not tighten the disposable hose with
too much force. The disposable hose may
otherwise be destroyed. X
Unscrew the cap from the opening on top of
AdBlue ®
refill canister ;.
X Place disposable hose :on the opening of
AdBlue ®
refill canister ;and screw it on
clockwise until hand-tight. 208
RefuellingDriving and parking

Disposable hose
:remains closed until
you fasten disposable hose :to the
AdBlue ®
filler neck of the vehicle. X
Place disposable hose :on the filler neck
on the vehicle and screw it on clockwise
until hand-tight. When you feel resistance,
disposable hose :is sufficiently secured.
X Lift up and tip AdBlue ®
refill canister ;.
Filling stops when the AdBlue ®
tank is com-
pletely filled. Do not fill the AdBlue ®
tank
any further. AdBlue ®
refill canister ;can
be removed when it has been only partially emptied.
X Turn disposable hose :on the filler neck
of the vehicle anti-clockwise and remove it.
X Turn disposable hose :on the opening of
AdBlue ®
refill canister ;anti-clockwise
and remove it.
X Reseal AdBlue ®
refill canister ;with the
cap.
AdBlue ®
refill canisters are available at many
filling stations or at a Mercedes-Benz Service
Centre. AdBlue ®
refill canisters are often sold
with a filler hose. A filler hose that does not
exactly fit the vehicle's AdBlue ®
tank offers
no protection against overfilling. AdBlue ®
may leak out as a result of overfilling.
Mercedes-Benz offers a special disposable
hose with overfill protection. You can obtain
this from any Mercedes-Benz Service Centre.
AdBlue ®
is available in a variety of containers
and receptacles. Only use the disposable
hose with the Mercedes-Benz AdBlue ®
refill
canisters. AdBlue
®
refill bottle !
Screw on the AdBlue ®
refill bottle only
hand-tight. It may otherwise be destroyed. X
Unscrew the protective cap from AdBlue ®
refill bottle :.
X Place AdBlue ®
refill bottle :on the filler
neck as shown and screw it on clockwise
until hand-tight.
X Press AdBlue ®
refill bottle :towards the
filler neck.
The AdBlue ®
tank is filled. This could last up
to one minute.
When AdBlue ®
refill bottle :is no longer
pressed, filling stops and the bottle may be
taken off again after being only partially
emptied.
X Release AdBlue ®
refill bottle :.
X Turn AdBlue ®
refill bottle :anti-clockwise
and remove it.
X Screw the protective cap onto AdBlue ®
refill bottle :again.
AdBlue ®
refill bottles are available at many
filling stations or at a Mercedes-Benz Service Centre. Refill bottles without a threaded seal
offer no protection against overfilling.
AdBlue ®
may leak out as a result of overfilling.
Mercedes-Benz offers special refill bottles
with a threaded cap. These are available at
any Mercedes-Benz Service Centre. Refuelling
209Driving and parking Z

Closing the AdBlue
®
filler cap X
Fit AdBlue ®
filler cap ;on the filler neck
and turn it clockwise.
X To close the fuel filler flap, press it in the
direction of arrow :.
X Drive faster than 15 km/h.
The Refill AdBlue See Owner’s Man‐
Refill AdBlue See Owner’s Man‐
ual
ual message goes out after approximately
one minute.
If the Refill Refill AdBlue
AdBlueSee
SeeOwner’s
Owner’s Manual
Manual
message continues to be shown in the multi-
function display, you must top up with more
AdBlue ®
. Charging the high-voltage battery
(PLUG-IN HYBRID vehicles) Important safety notes
G
DANGER
The vehicle's high voltage electrical system is under high voltage. If you modify components
in the vehicle's high-voltage electrical system or touch damaged components, you may be
electrocuted. The components in the vehi-
cle's high-voltage electrical system may be
damaged in an accident, although the damage
is not visible. There is a risk of fatal injury.
Do not touch any high-voltage components
after an accident and never modify the vehi-
cle's high-voltage electrical system. Have the vehicle towed away after an accident and the vehicle's high-voltage electrical system
checked by a qualified specialist workshop. G
WARNING
In the event of a vehicle fire, the internal pres- sure of the high-voltage battery could exceeda critical value. In this case, flammable gas
escapes through a vent valve in the vehicle's
underbody. The gas can ignite. There is a risk
of injury.
Leave the danger area immediately. Secure
the danger area at a suitable distance, whilst
observing legal requirements. G
DANGER
Connecting the charging cable to the mains
supply via incorrectly installed mains sockets or by means of adapters, extension cables or
similar could cause a fire or an electric shock. There is a risk of fatal injury.
To avoid such risks, observe the following:
R Only connect the charging cable to mains
sockets:
- which have been properly installed and
- which have been inspected by a qualified
electrician
R For safety reasons, only use charging
cables which have been supplied with the
vehicle or which have been approved for
this vehicle.
R Never use a damaged charging cable.
R Do not use:
- extension cables
- extension reels
- multi-outlet sockets
R Never use socket adapters to connect the
charging cable to the mains socket. The
only exception is if the adapter has been
tested and approved by the manufacturer
for charging the high-voltage battery of an
electric vehicle.
R Observe the safety notes in the operating
instructions for the socket adapter. G
DANGER
Connecting the charging cable to the wallbox via an incorrectly installed wallbox or adapter, 210
Charging the high-voltage battery (PLUG-IN HYBRID vehicles)Driving and parking

extension cable or similar could cause a fire or
an electric shock. There is a risk of fatal injury.
To avoid hazardous situations, observe the
following:
R Only connect the charging cable to a wall-
box:
-
which has been properly installed and
- which has been inspected by a qualified
electrician
R For safety reasons, only use charging
cables that have been tested and approved
by the manufacturer for charging the high-
voltage battery in an electric vehicle.
R Never use damaged charging cables.
R Do not extend the charging cable.
R Never use adapters.
R Observe the safety notes in the operating
instructions for the wallbox.
The vehicle's high-voltage electrical system is
under high voltage.
R Do not handle high-voltage components or
the orange cables of the vehicle's high-volt-age electrical system.
R Do not touch high-voltage components or
the orange cables of the high-voltage elec-
trical system when a vehicle has been
involved in a crash.
R Do not touch any damaged components or
the damaged orange cables of the vehicle's
high-voltage electrical system.
R Do not remove the covers of the high-volt-
age electrical system components that are
marked with a warning sticker. General notes
Operation The vehicle is equipped with a high-voltage
battery for driving. The high-voltage battery
stores the energy needed to operate the elec-
tric motor and releases it again.
The electric motor uses energy that has been stored in the high-voltage battery when pull- ing away, accelerating and during the jour-
ney.
In overrun mode, kinetic energy is converted
by means of energy recuperation into electri- cal energy and stored in the high-voltage bat-
tery. Information on overrun mode
(Y page 299).
The high-voltage battery can be charged as
follows:
R through energy recuperation while the
vehicle is in motion
R during the journey by the combustion
engine in CHARGE operating mode
(Y page 290)
R with the relevant charging cable at a mains
socket while the vehicle is stationary
R with the relevant charging cable at a wall-
box while the vehicle is stationary
R with the relevant charging cable at a charg-
ing station while the vehicle is stationary
The high-voltage battery can be charged in a
nominal voltage range from 100 V to 240 V.
You can view the charge status of the high-
voltage battery in the multifunction display.
You can find information in "PLUG-IN HYBRID
operation", section "Menus and submenus"
under "Energy flow display" (Y page 291).
High and low outside temperatures Low outside temperatures
The maximum performance of the high-volt-
age battery is significantly reduced at very
low outside temperatures. The high-voltage
battery is then no longer able to provide the
normal electrical power output.
High outside temperatures
To prevent damage to the high-voltage bat-
tery due to very high outside temperatures,
the maximum power output of the high-volt-
age battery is reduced by the vehicle. Charging the high-voltage battery (PLUG-IN HYBRID vehicles)
211Driving and parking Z

Energy consumption and electrical
range The maximum electrical range is generally
reduced by:
R high and low outside temperatures
R operating the climate control system
R switching on consumers
The battery's physical characteristics are
such, that leaving the vehicle parked for long
periods at low outdoor temperatures without charging it can lead to:
R a reduction in battery performance
R longer charge times
Notes on battery care Avoid storing or transporting the vehicle at
excessively high or low temperatures over a
long period.
If you park the vehicle and leave it stationary for long periods:
R check the charge status of the high-voltage
battery more often
R connect the vehicle to a power supply
This prevents self-discharge and damage to
the high-voltage battery.
Terms of use Please note the information on exceptions
and limitations in the warranty documenta-
tion and in the Service Booklet.
Handling the charging cable and charg- ing cable controls Do not leave the charging cable controls
(Y page 213) hanging loose from a mains
socket. Otherwise, this could result in a poor contact with the mains socket and malfunc-
tions when charging the vehicle. To ensure that the brackets within the charg-
ing cable controls are not subjected to incor-
rect loads, observe the following:
R never lift or carry the controls by the charg-
ing cable connector or the mains plug
R to transport the charging cable, the coiled
part can be:
- wrapped around the controls or
- secured to the housing of the controls
Heat generated by the charging cable
and charging cable connector Observe the "Important safety notes"
(Y page 210).
During the charging process, the charging
cable and charging cable connector may heat
up.
The charging cable and charging cable con-
nector will only heat up within the permissible limiting values, provided that:
R the mains power supply and the charging
cable are not damaged
R the instructions for handling the charging
cable and controls on the charging cable
are observed
If the charging cable or plug get too hot, have the mains power supply checked.
Protection against overvoltage !
Voltage surges in the mains supply can
damage the vehicle. The vehicle is there-
fore equipped with a device which protects
it from voltage surges in the mains supply.
This device may be triggered during severe
thunderstorms, for example, and may lead
to the building's fuse being tripped and an
interruption in the power supply. These
functions protect the vehicle. After the
building fuse is switched on again, the
charging process resumes automatically.
Following an interruption in the power sup-
ply or tripping of the building's fuse, it may take up to 10 minutes for charging to
resume automatically. 212
Charging the high-voltage battery (PLUG-IN HYBRID vehicles)Driving and parking

Reset the building's circuit breaker. Other-
wise, the charging process cannot be contin- ued.
General information on the charging
process Observe the "Important safety notes"
(Y page 210).
The vehicle socket is located in the rear
bumper on the right below the tail lamp.
The charge socket flap and the vehicle are
centrally locked or unlocked simultaneously. Charging the high-voltage battery via
the mains socket
Charging cable for mains sockets Important safety notes
! Only use the charging cable to charge the
high-voltage battery. Do not use the charg-
ing cable for other purposes. It may other-
wise be damaged.
The vehicle is supplied with a charging cable
for connection to a mains socket. Only use
the charging cable supplied with the vehicle
or a charging cable approved for the vehicle.
i The charging process can vary depending
on the mains power supply. Therefore,
always observe the local information.
i For short charge times (charging with 16
A), connect the fast-charging cable to the
wallbox or charging station. You can also
use the optionally available charging cable
with the CE plug.
Information about charging from a wallbox
can be found at (Y page 216).
Information about charging at a charging sta-
tion can be found at (Y page 217).
Stowing the charging cable
The charging cable can be stowed in the bag
supplied in the luggage compartment of the vehicle and held in place with the Velcro fas-
tener.
Controls on the charging cable
:
Alternating current status indicator
; Control/protection system indicator
= Charge current indicator
? Charge current setting button
When displays :and ;on the charging
cable light up, this means the following: Display
:
: Lights up
green The external mains supply
connection is working prop-
erly. The high-voltage bat-
tery can be charged. Flashes red A fault has been detected in
the external mains supply.
The high-voltage battery is
recharged as soon as the
electricity signal registers
normal values. Lights up red There is a malfunction. The
charging cable must be
removed from the mains
socket and then re-inserted.Cha
rging the high-voltage battery (PLUG-IN HYBRI D vehicles)
213Driving and parking Z