2012 MERCEDES-BENZ GLK-Class windshield wipers

Index ....................................................... 4Introduction ......................................... 20At a glance ........................................... 27Safety ................................................... 37Opening/closing ................................. 67Seats, steering wheel and mirrors ....89Lights and windshield wipers ..........101Climate control ................................. 117Driving and parking ..........................129On-board computer and displays ....165Stowing and features .......................211Maintenance and care ......................237Breakdown assistance .....................251Wheels and tires ............................... 269Technical data ................................... 299
Contents3

W
Warning and indicator lamps ABS ................................................ 202
Brakes ........................................... 201
Check Engine ................................. 206
Coolant .......................................... 207
Cruise control ................................ 151
ESP ®
.............................................. 203
ESP ®
OFF ....................................... 204
Fuel tank ........................................ 206
Overview .......................................... 30
PASSENGER AIRBAG OFF
indicator lamp .................................. 44
Reserve fuel ................................... 206
Seat belt ........................................ 200
SRS ................................................ 205
Tire pressure monitor ....................209
Warranty ............................................ 301
Washer fluid Display message ............................ 198
see Windshield washer system
Wheel bolt tightening torque ........... 258
Wheel chock ...................................... 254
Wheels Changing a wheel .......................... 254
Checking ........................................ 271
Cleaning ......................................... 245
Important safety notes ..................270
Interchanging/changing ................294
Mounting a wheel .......................... 256
Removing a wheel ..........................256
Storing ........................................... 295
Tightening torque ........................... 258
Wheel size/tire size .......................295
Window curtain air bag
Display message ............................ 185
Operation ......................................... 44
Windows
Cleaning ......................................... 246
see Side windows
Windshield
Defrosting ...................................... 123
Windshield washer system .............. 241
Notes ............................................. 307
Windshield wipers
Problem (malfunction) ...................116
Rear window wiper ........................114Replacing the wiper blades ............114
Switching on/off ........................... 113
Winter driving
Important safety notes ..................272
Slippery road surfaces ...................149
Snow chains .................................. 272
Winter tires
M+S tires ....................................... 272
Wiper blades
Cleaning ......................................... 246
Important safety notes ..................114
Replacing (rear window) ................116
Replacing (windshield) ...................115
Wooden trim (cleaning
instructions) ...................................... 248Index19

Useful information ............................102
Exterior lighting ................................ 102
Interior lighting ................................. 107
Replacing bulbs ................................. 108
Windshield wipers ............................113101Lights and windshield wipers

Useful information
i This 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.
i Please read the information on qualified
specialist workshops ( Y page 23).
Exterior lighting
Important safety notes
For reasons of safety, Mercedes-Benz
recommends that you drive with the lights
switched on even during the daytime. In some
countries, operation of the headlamps varies
due to legal requirements and self-imposed
obligations.
Information about driving abroad
Converting to symmetrical low beam
when driving abroad: switch the headlamps
to symmetrical low beam in countries in
which traffic drives on the opposite side of the
road to the country where the vehicle is
registered. This prevents glare to oncoming
traffic. Symmetrical lights do not illuminate
as large an area of the edge of the road.
Have the headlamps converted at a qualified
specialist workshop, e.g. an authorized
Mercedes-Benz Center, as close to the border
as possible before driving in these countries.
Converting to asymmetrical low beam
after returning: have the headlamps
converted back to asymmetrical low beam at
a qualified specialist workshop, e.g. an
authorized Mercedes-Benz Center, as soon as
possible after crossing the border again.
Light switch
Operation
Depending on the date of manufacture of your
vehicle, the c or à symbol for the
automatic headlamp mode/daytime running
lamps is located on the light switch.
Illustration: light switch with the à symbol for
the automatic headlamp mode/daytime running
lamps
1 WLeft-hand standing lamps2XRight-hand standing lamps3TParking lamps, license plate and
instrument cluster lighting4 ÃAutomatic headlamp mode/daytime
running lamps5 LLow-beam/high-beam headlampsBRRear fog lampCNFront fog lamps 99
Only vehicles with front fog lamps have the fog lamps function.102Exterior lightingLights and windshield wipers

Illustration: light switch with the c symbol for
the automatic headlamp mode/daytime running
lamps
1 WLeft-hand standing lamps2XRight-hand standing lamps3TParking lamps, license plate and
instrument cluster lighting4 cAutomatic headlamp mode/daytime
running lamps5 LLow-beam/high-beam headlampsBRRear fog lampCNFront fog lamps 9
The turn signals, high-beam headlamps and
the high-beam flasher are operated using the
combination switch ( Y page 105).
! Switch off the parking lamps and standing
lamps when you leave the vehicle. This
prevents the battery from discharging.
The exterior lighting (except the parking/
standing lamps) switches off automatically if
you:
R remove the SmartKey from the ignition lock
R open the driver's door with the SmartKey
in position 0
If you hear a warning tone when you leave the
vehicle, the lights may still be switched on.
XTurn the light switch to c or à .Low-beam headlampsXTo switch on the low-beam headlamps:
turn the SmartKey in the ignition lock to
position 2 or start the engine.XTurn the light switch to L.
The L indicator lamp in the instrument
cluster lights up.
Daytime running lamps
Daytime running lamps in Canada
The daytime running lamps function is
required by law in Canada. It cannot therefore
be deactivated.
XTurn the light switch to c or à .
With the engine running: depending on the
ambient light, the daytime running lamps or
the low-beam headlamps are switched on.
When the low-beam headlamps are
switched on, the L indicator lamp in the
instrument cluster lights up.
When the engine is running and the vehicle is
stationary: if you move the selector lever from
a drive position to P, the low-beam
headlamps go out after three minutes.
When the engine is running, the vehicle is
stationary and in high ambient light
brightness: if you turn the light switch
to T , the daytime running lamps and the
parking lamps are switched on.
If the engine is running and you turn the light
switch to L, the manual settings take
precedence over the daytime running lamps.
Daytime running lamps in the USA
This function is only available on vehicles with
daytime running lamps.
In the USA, the daytime running lamps are
deactivated upon delivery from the factory.
XTo activate the daytime running lamps
(vehicles with a luxury multifunction
steering wheel): you can activate the9
Only vehicles with front fog lamps have the fog lamps function.Exterior lighting103Lights and windshield wipers

daytime running lamps function using the
on-board computer ( Y page 176).XTurn the light switch to c or à .
With the engine running: depending on the
ambient light, the daytime running lamps or
the low-beam headlamps are switched on.
When the low-beam headlamps are
switched on, the L indicator lamp in the
instrument cluster lights up.
It is only possible to activate the high-beam
headlamps if the brightness of the ambient
light is at a low level.
However, the high-beam flasher can always
be used.
If the engine is running and you turn the light
switch to T or L , the manual settings
take precedence over the daytime running
lamps.
Automatic headlamp mode
XTo switch on automatic headlamp
mode: turn the light switch to c or
à .
SmartKey in position 1 in the ignition lock:
the parking lamps are switched on or off
automatically depending on the brightness
of the ambient light.
With the engine running: depending on the
brightness of the ambient light, the daytime
running lamps 10
or the low-beam
headlamps are switched on or off
automatically.
When the low-beam headlamps are
switched on, the L indicator lamp in the
instrument cluster lights up.GWARNING
If the light switch is set to c or à , the
low-beam headlamps will not come on
automatically if it is foggy. This could
endanger you and others. Therefore, turn the
light switch to L in fog.
The automatic headlamp feature is only an
aid. The driver is responsible for the vehicle's
lighting at all times.
Front fog lamps
Only vehicles with front fog lamps have the
fog lamps function.
GWARNING
If you suspect that driving conditions will be
foggy, turn the light switch to L before you
start your journey. Otherwise, your vehicle
may not be visible and you could endanger
yourself and others.
XTo switch on the front fog lamps: turn
the SmartKey in the ignition lock to position
2 or start the engine.XTurn the light switch to L or c or
à .XPress the N button.
The green N indicator lamp in the
instrument cluster lights up.XTo switch off the front fog lamps: press
the N button.
The green N indicator lamp in the
instrument cluster goes out.
Rear fog lamp
XTo switch on the rear fog lamp: turn the
SmartKey in the ignition lock to position 2
or start the engine.XTurn the light switch to L or c or
à .
If the light switch is set to c or à ,
the rear fog lamp only lights up if the low-
beam headlamps are on.10 Only if daytime running lamps have been activated via the on-board computer.104Exterior lightingLights and windshield wipers

XPress the R button.
The yellow R indicator lamp in the
instrument cluster lights up.XTo switch off the rear fog lamp: press the
R button.
The yellow R indicator lamp in the
instrument cluster goes out.
Headlamp cleaning system
The headlamps are cleaned automatically if
the "Wipe with washer fluid" function is
operated ten times while the lights are on and
the engine is running (Y page 113). When you
switch off the ignition, the automatic
headlamp cleaning system is reset and
counting is resumed from 0.
Combination switch
Turn signals
:High-beam headlamps;Right turn signal=High-beam flasher?Left turn signalXTo indicate briefly: press the combination
switch briefly to the pressure point in the
direction of arrow ; or ?.
The corresponding turn signal flashes three
times.XTo indicate: press the combination switch
beyond the pressure point in the direction
of arrow ; or ?.High-beam headlampsXTo switch on the high-beam headlamps:
turn the SmartKey in the ignition lock to
position 2 or start the engine.XTurn the light switch to L or c or
à .XPress the combination switch beyond the
pressure point in the direction of
arrow :.
In the c or à position, the high-
beam headlamps are only switched on
when it is dark and the engine is running.
The K indicator lamp in the instrument
cluster lights up when the high-beam
headlamps are switched on.XTo switch off the high-beam
headlamps: move the combination switch
back to its normal position.
The K indicator lamp in the instrument
cluster goes out.
High-beam flasher
XTo switch on: turn the SmartKey in the
ignition lock to position 1 or 2 or start the
engine.XPull the combination switch in the direction
of arrow =.
Hazard warning lamps
Exterior lighting105Lights and windshield wipersZ

The hazard warning lamps automatically
switch on if:
R an air bag is deployed.
R the vehicle is slowed down severely from a
speed of over 45 mph (70 km/h) and comes
to a halt.XTo switch on the hazard warning lamps:
press button :.
All turn signals flash. If you now switch on
a turn signal using the combination switch,
only the turn signal lamp on the
corresponding side of the vehicle will flash.XTo switch off the hazard warning
lamps: press button :.
The hazard warning lamps are deactivated
automatically if the vehicle returns to a speed
of over 6 mph(10 km/h) after a full
application of the brakes.
i The hazard warning lamps still operate if
the ignition is switched off.
Active light function
The active light function is a system that
moves the headlamps according to the
steering movements of the front wheels. In
this way, relevant areas remain illuminated
while driving. This allows you to recognize
pedestrians, cyclists and animals.
Active: when the lights are switched on.
Cornering light function
The cornering light function improves the
illumination of the road over a wide angle in
the direction you are turning, enabling better
visibility in tight bends, for example. It can
only be activated when the low-beam
headlamps are switched on.
Active: if you are driving at speeds below
25 mph (40 km/h) and switch on the turn
signals or turn the steering wheel.
Not active: if you are driving at speeds above
25 mph (40 km/h) or switch off the turn
signal or turn the steering wheel to the
straight-ahead position.
The cornering light function may remain lit for
a short time, but is automatically switched off
after no more than three minutes.
Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
XDrive with the headlamps switched on.
The level of moisture diminishes,
depending on the length of the journey and
the weather conditions (humidity and
temperature).
If the level of moisture does not diminish:
XHave the headlamps checked at a qualified
specialist workshop.106Exterior lightingLights and windshield wipers