charging MERCEDES-BENZ GLK SUV 2012 Owners Manual

Auxiliary heating
Activating/deactivating .................137
Activating/deactivating (on the
centre console) .............................. 137
Display message (12-button mul-
tifunction steering wheel) ..............280
Important safety notes ..................137
Problem (display message) ............141
Remote control .............................. 138
Setting (on-board computer, 12-
button multifunction steering
wheel) ............................................ 242
Setting the departure time ............. 139
Auxiliary ventilation
Activating/deactivating .................137
Activating/deactivating (on the
centre console) .............................. 137
Problem (display message) ............141
Remote control .............................. 138B
Bag hook ............................................ 300
Ball coupling Fitting ............................................ 217
Removing ....................................... 220
Storing ........................................... 220
BAS (Brake Assist System) .................66
BAS PLUS (Brake Assist System
PLUS) .................................................... 66
Battery (key) Checking .......................................... 79
Important safety notes ....................79
Replacing ......................................... 79
Battery (vehicle)
Charging ........................................ 339
Display message (12-button mul-
tifunction steering wheel) ..............268
Display message (4-button multi-
function steering wheel) ................265
Important safety notes ..................337
Jump starting ................................. 341
Belt
see Seat belt
Belt force limiters (activation) ...........43
Belt tensioner Activation ......................................... 43
Function .......................................... .53Blinds
see Roller sunblind
Blind Spot Assist
Activating/deactivating .................237
Notes/function .............................. 203
Trailer towing ................................. 205
see Active Blind Spot Assist
BlueTEC (AdBlue ®
) ............................. 368
Bonnet Closing .......................................... .315
Display message (12-button mul-
tifunction steering wheel) ..............280
Display message (4-button multi-
function steering wheel) ................278
Opening ......................................... 313
Brake Assist System
see BAS (Brake Assist System)
Brake fluid
Display message (12-button mul-
tifunction steering wheel) ..............254
Display message (4-button multi-
function steering wheel) ................249
Notes ............................................. 371
Brake lamp
Display message (12-button mul-
tifunction steering wheel) ..............261
Display message (4-button multi-
function steering wheel) ................258
Brake lamps
Adaptive .......................................... .67
Brakes
ABS .................................................. 65
BAS .................................................. 66
BAS PLUS ........................................ 66
Brake fluid (notes) .........................371
Display message (12-button mul-
tifunction steering wheel) ..............252
Display message (4-button multi-
function steering wheel) ................247
Driving tips .................................... 167
Important safety notes ..................167
Parking brake ........................ 165, 168
Warning lamp ................................. 286
Breakdown
see Flat tyre
see Towing away/tow-starting 6
Index

Interior lighting control
General notes In order to prevent the vehicle's battery from
discharging, the interior lighting functions are
automatically deactivated after some time
except for when the key is in position 2in the
ignition lock.
Automatic interior lighting control X
To activate/deactivate: press the|
button.
When the automatic interior lighting con-
trol is activated, the button is flush with the
overhead control panel.
The interior lighting automatically switches
on if you:
R unlock the vehicle
R open a door
R remove the key from the ignition lock
The interior lighting is activated for a short
time when the key is removed from the igni-
tion lock. You can activate this delayed
switch-off using the on-board computer
(Y page 241).
Manual interior lighting control X
To switch the front interior lighting on/
off: press the cbutton.
X To switch the rear interior lighting on/
off: press the ubutton.
X To switch the reading lamps on/off:
press the pbutton. Crash-responsive emergency lighting
The interior lighting is activated automatically
if the vehicle is involved in an accident.
X To switch off the crash-responsive
emergency lighting: press the hazard
warning lamp button.
or
X Lock and then unlock the vehicle using the
key. Replacing bulbs
Important safety notes
Xenon bulbs G
DANGER
Xenon bulbs are under high voltage. If you
touch the electrical contacts of a xenon bulb,
you could suffer an electric shock and be seri-
ously or even fatally injured. For this reason,
do not remove the cover of xenon bulbs.
Do not change the xenon bulbs yourself, but
have them replaced at a qualified workshop.
If your vehicle is equipped with xenon bulbs,
you can recognise this by the following: the
cone of light from the xenon bulbs moves
from the top to the bottom and back again
when you start the engine. For this to be
observed, the lights must be switched on
before starting the engine.
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 setting checked regularly.
Other bulbs G
WARNING
Bulbs and lamps can be very hot. You should
therefore allow them to cool down before you
change them. Otherwise, you could be burned
if you touch them. 118
Replacing bulbsLights and windscreen wipers

Using KEYLESS-GO
X
Press the Start/Stop button (Y page 147).
The engine stops and all the indicator
lamps in the instrument cluster go out.
i When the driver's door is closed, this cor-
responds to key position 1. When the driv-
er's door is open, this corresponds to key
position 0, i.e. key removed.
i The engine can be switched off while the
vehicle is in motion by pressing and holding
the Start/Stop button for approximately
3 seconds. This function operates inde-
pendently of the ECO start/stop automatic
engine switch-off function. Parking brake
G
WARNING
If you must brake the vehicle with the parking
brake, the braking distance is considerably
longer and the wheels could lock. This increa-
ses the risk of skidding and an accident.
Only use the parking brake to brake the vehi-
cle when the service brake is faulty. Do not
apply the parking brake too firmly. If the
wheels lock, release the parking brake until
the wheels begin turning again. G
WARNING
If you leave children unsupervised in the vehi-
cle, they could set it in motion by, for example:
R releasing the parking brake
R shifting the automatic transmission out of
the parking position P
R starting the engine.
They could also operate the vehicle's equip-
ment. There is a risk of an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unsupervised in the vehicle. X
To apply: depress parking brake ;firmly.
The J indicator lamp in the instrument
cluster lights up if the engine is running.
X To release: depress the brake pedal and
keep it depressed.
X Pull release handle :.
The J indicator lamp in the instrument
cluster goes out. Parking up the vehicle
If you leave the vehicle parked up for longer
than four weeks, the battery may be damaged
by exhaustive discharging.
X Disconnect the battery or connect it to a
trickle charger.
i You can obtain information about trickle
chargers from a qualified specialist work-
shop.
If you leave the vehicle parked up for longer
than six weeks, the vehicle may suffer dam-
age as a result of lack of use.
X Visit a qualified specialist workshop and
seek advice. Driving tips
General driving tips
Important safety notes G
WARNING
If you switch off the ignition while driving,
safety-relevant functions are only available Driving tips
165Driving and parking
Z

fere with the vehicle's electronics and thereby
jeopardise the operating safety of the vehicle
and your safety. Therefore, you must only use
this equipment if it is correctly connected to
a separate reflection-free exterior aerial. G
WARNING
Excessive levels of electromagnetic radiation
may cause damage to your health and the
health of others. Using an exterior aerial takes
into account current scientific discussions
relating to the possible health risk posed by
electromagnetic fields.
Mercedes-Benz recommends the use of an
approved exterior aerial. This ensures:
R optimal mobile phone reception quality in
the vehicle
R mutual influences between the vehicle
electronics and mobile phones are mini-
mised
An exterior aerial has the following advan-
tages:
R it conducts the electromagnetic fields gen-
erated by a wireless device to the exterior.
R the field strength in the vehicle interior is
lower than in a vehicle that does not have
an exterior aerial.
i There are various mobile phone brackets
that may be fitted in your vehicle; in some
cases, these are country-specific.
i You can connect a Bluetooth ®
-capable
mobile phone with Audio 20 or COMAND
Online via the Bluetooth ®
interface. This
also applies if your vehicle is equipped with
convenience telephony.
More information on suitable mobile phones,
mobile phone brackets and on connecting
Bluetooth ®
-capable mobile phones with
Audio 20 or COMAND Online can be obtained:
R at your Mercedes-Benz Service Centre
R on the Internet at http://www.mercedes-
benz.com/connect i
The functions and services available when
you use the phone depend on your mobile
phone model and service provider.
Using a mobile phone If the mobile phone is inserted in the mobile
phone bracket, you can speak to the person
you are calling using the hands-free system.
X
Open the telephone compartment
(Y page 297).
X Place the mobile phone bracket into the
pre-installed fitting (see the separate
installation instructions for the mobile
phone fitting).
X Insert the mobile phone into the mobile
phone bracket (see the separate installa-
tion instructions for the mobile phone fit-
ting).
i On some mobile phone brackets, you first
have to connect the mobile phone via Blue-
tooth ®
to the mobile phone bracket (see
the separate operating instructions for the
mobile phone bracket).
If this is the case, the mobile phone does
not have to be inserted into the bracket for
you to be able to use the telephone func-
tions. However, the charging function and
aerial function are not available.
Operating the mobile phone You can operate the telephone using the
6
and~ buttons on the luxury multi-
function steering wheel. You can operate
other mobile phone functions via the on-
board computer (Y page 234).
When you remove the key from the ignition
lock, the mobile phone stays switched on.
However, you can no longer use the hands-
free system.
If you have an active call and would like to
take the key out of the ignition lock, first
remove the mobile phone from the bracket. Features
309Stowing and features Z

!
You should have all work involving the
battery carried out at a qualified specialist
workshop. In the exceptional case that it is
necessary for you to disconnect the battery
yourself, make sure that:
R you switch off the engine and remove the
key. On vehicles with KEYLESS-GO,
ensure that the ignition is switched off.
Check that all the indicator lamps in the
instrument cluster are off. Otherwise,
electronic components, such as the
alternator, may be damaged.
R you first remove the negative terminal
clamp and then the positive terminal
clamp. Never swap the terminal clamps.
Otherwise, the vehicle's electronic sys-
tem may be damaged.
R in vehicles with automatic transmission,
the transmission is locked in position P
after disconnecting the battery. The vehi-
cle is secured against rolling away. You
can then no longer move the vehicle.
The battery and the cover of the positive
terminal clamp must be fitted securely dur-
ing operation.
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. Consult a qualified specialist
workshop if you wish to leave your vehicle
parked up for a long period of time.
Like other batteries, the vehicle battery may
discharge over time if you do not use the
vehicle. In such cases, have the battery dis-
connected at a qualified specialist workshop.
You can also charge the battery with a
charger recommended by Mercedes-Benz.
For more information, please contact a quali-
fied specialist workshop.
i When you park the vehicle, remove the
key if you do not require any electrical con-
sumers. The vehicle will then use very little
energy, thus conserving battery power. i
If the power supply has been interrupted,
e.g. if the battery was discharged, you will
have to:
R set the clock; see the separate operating
instructions.
For vehicles with Audio 20 and a 4-button
multifunction steering wheel, see "Date/
Time" (Y page 227).
R reset the panorama sliding sunroof
(Y page 93).
R reset the function for automatically fold-
ing the exterior mirrors in/out by folding
the mirrors out once (Y page 104). Charging the battery
G
WARNING
Only charge the battery in a well-ventilated
area. As the battery is being charged, gases
can escape and generate minor explosions.
This could injure you and other persons or
cause damage to the paintwork or acid cor-
rosion on the vehicle.
You can obtain information on battery charg-
ers which allow the battery to be charged
while still installed from a qualified specialist
workshop. G
WARNING
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
WARNING
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 still installed in the vehicle.
! Only use battery chargers with a maxi-
mum charging voltage of 14.8 V. Battery (vehicle)
339Breakdown assistance Z

!
Only charge the battery using the jump-
start connection point.
The jump-starting connection point is in the
engine compartment (Y page 341).
X Open the bonnet (Y page 313).
X Connect the battery charger to the positive
terminal and earth point in the same order
as when connecting the donor battery in
the jump-starting procedure
(Y page 341).
X Read the battery charger's operating
instructions before charging the battery. 340
Battery (vehicle)Breakdown assistance

Jump-starting
G
WARNING
There is a risk of acid burns when jump-starting a vehicle due to the gases which escape from
the battery. Do not lean over the battery while the engine is being jump-started. G
WARNING
Gases escaping from the battery during jump-starting may cause minor explosions. Avoid cre-
ating sparks. Keep naked flames away from the battery, and do not smoke.
Comply with safety precautions when handling batteries. You will find these under "Battery (vehi-
cle)" in the index. G
WARNING
Non-combusted fuel can collect in the exhaust system and ignite. There is a risk of fire. Avoid
repeated and lengthy starting attempts.
! Vehicles with a petrol engine: avoid repeated and lengthy starting attempts. Otherwise,
the non-combusted fuel may damage the catalytic converter.
Do not use a rapid-charging device to start the vehicle. If your vehicle's battery is discharged,
the engine can be jump-started from another vehicle or from a second battery using jump
leads. Observe the following points:
R the battery is not accessible in all vehicles. If the other vehicle's battery is not accessible,
jump-start the vehicle using a second battery or a jump-starting device.
R vehicles with a petrol engine: only jump-start the vehicle when the engine and exhaust
system are cold.
R do not start the engine if the battery is frozen. 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 that have a sufficient cross-section and insulated terminal clamps.
R if the battery is fully discharged, leave the battery that is being used to jump-start connected
for a few minutes before attempting to start. This charges the empty battery a little.
R make sure that the two vehicles do not touch.
Make sure that:
R the jump leads are not damaged.
R bare parts of the terminal clamp do not come into contact with other metal parts while the
jump leads are connected to the battery.
R the jump leads cannot come into contact with parts such as the V-belt pulley or the fan.
These parts move when the engine is started and while it is running.
X Firmly depress the parking brake.
X Manual transmission: engage neutral.
X Automatic transmission: shift the automatic transmission to position P.
X Switch off all electrical consumers (e.g. radio, blower, etc.).
X Open the bonnet (Y page 313). Jump-starting
341Breakdown assistance Z