brakes 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

Important safety notes
....................82
Opening (from the inside) ................83
Downhill Speed Regulation
see DSR (Downhill Speed Regulation)
Drive program
Automatic ...................................... 159
Display ........................................... 156
Display (DIRECT SELECT lever) ......156
Manual .......................................... .160
Driver's door
see Door
Drive system
Active Blind Spot Assist .................207
Driving abroad
Service24h .................................... 313
Symmetrical dipped bea m............. 110
Driving in mountainous terrain
Approach/departure angl e............ 172
Driving off-road
see Off-road driving
Driving safety system
BAS PLUS (Brake Assist System
PLUS) .............................................. .66
Electronic Brake-force Distribu-
tion .................................................. 69
ESP ®
(Electronic Stability Pro-
gram) ............................................... 67
ETS/4ETS (Electronic Traction
System) ........................................... 68
Important safety guidelines .............65
Driving safety systems
ABS (Anti-lock Braking System) .......65
Adaptive brake lamps ......................67
BAS (Brake Assist System) ..............66
Overview .......................................... 65
PRE-SAFE ®
Brake ............................ .69
Driving system
Active Lane Keeping Assis t............ 210
Active Parking Assist .....................192
Display message (12-button mul-
tifunction steering wheel) ..............271
Display message (4-button multi-
function steering wheel) ................270
Driving systems
Active Driving Assistance pack-
age ................................................. 207
ATTENTION ASSIST ........................201Blind Spot Assist ............................ 203
Cruise control
................................ 173
Distronic Plus ................................ 178
HOLD function ............................... 186
Lane Keeping Assist ......................205
Lane package ................................ 203
PARKTRONIC ................................. 188
Reversing camera ..........................196
Speed Limit Assist .........................202
SPEEDTRONIC ............................... 176
Driving tips
Aquaplaning ................................... 168
Automatic transmission .................157
Brakes ........................................... 167
DISTRONIC PLUS ........................... 185
Downhill gradient ........................... 167
Driving abroad ............................... 110
Driving in winter ............................ .169
Driving on flooded roads ................168
Driving on sand .............................. 172
Driving on wet roads ......................168
Driving over obstacles ...................172
General .......................................... 165
Icy road surfaces ........................... 170
Limited braking efficiency on sal-
ted roads ....................................... 168
New brake pads/linings ................168
Off-road driving .............................. 170
Off-road fording ............................. 169
Running-in tips ............................... 146
Snow chains .................................. 353
Symmetrical dipped bea m............. 110
Towing a trailer .............................. 215
Travelling uphill .............................. 172
Tyre ruts ........................................ 172
Wet road surface ........................... 167
DSR (Downhill Speed Regulation)
Display message (12-button mul-
tifunction steering wheel) ..............271
Function/notes ............................. 21310
Index

Direction of rotatio
n...................... 357
Display message (12-button mul-
tifunction steering wheel) ..............277
Display message (4-button multi-
function steering wheel) ................276
Important safety notes ..................350
Replacing ....................................... 356
Service life ..................................... 351
Storing ........................................... 357
Tyre size (data) .............................. 357
Tyre tread ...................................... 351
see Flat tyre U
Unladen weight ................................. 372
Unlocking Emergency unlocking .......................84
From inside the vehicle (central
unlocking button) ............................. 83 V
Vanity mirror (in sun visor) ..............306
Variable SPEEDTRONIC see SPEEDTRONIC
Vehicle
Correct use ...................................... 27
Data acquisition ............................... 28
Electronics ..................................... 363
Emergency unlocking .......................84
Equipment ....................................... 25
Implied warranty .............................. 28
Individual settings ..........................238
Leaving parked up .........................165
Locking (in an emergency) ...............84
Locking (key) ................................... 76
Lowering ........................................ 337
Pulling away ................................... 149
Raising ........................................... 333
Registration ..................................... 27
Towing away .................................. 342
Tow-starting ................................... 342
Transporting .................................. 345
Unlocking (in an emergency) ...........84
Unlocking (key) ................................ 76
Vehicle data ................................... 372
Vehicle data ....................................... 372
Vehicle dimensions ...........................372Vehicle emergency locking
................84
Vehicle identification number see VIN
Vehicle identification plate ..............364
Vehicle tool kit .................................. 327
Vehicle weights ................................. 372
Video (DVD) ........................................ 234
Video DVD (12-button multifunc-
tion steering wheel) ..........................234
VIN ...................................................... 364 W
Warning and indicator lamps ABS ................................................ 286
Brakes ........................................... 286
Distance warning signal .................294
ESP ®
.............................................. 288
ESP ®
OFF ....................................... 289
LIM (cruise control) ........................ 174
LIM (DISTRONIC PLUS) ..................179
LIM (variable SPEEDTRONIC )......... 176
PASSENGER AIRBAG OFF ................56
Reserve fuel ................................... 292
Seat belt ........................................ 284
SRS ................................................ 291
Warning triangle ................................ 326
Washer fluid Display message (12-button mul-
tifunction steering wheel) ..............281
Display message (4-button multi-
function steering wheel) ................279
Wheel bolt tightening torque ...........337
Wheel chock ...................................... 333
Wheels Changing/replacing .......................356
Changing a wheel .......................... 332
Checking ........................................ 351
Cleaning ......................................... 319
Fitting a new wheel ........................335
Important safety notes ..................350
Removing a wheel ..........................335
Storing ........................................... 357
Tightening torque ........................... 337
Wheel size/tyre size ......................357 Index
23

Warning and indicator lamps
Function Page
:
Diesel engine: preglow 148
;
Reserve fuel 292
=
Coolant 292
?
Seat belts 284
A
Turn signals 113
B
SRS 291
C
Engine diagnostics 291
D
foglamps
112 Function Page
E
ESP
® 288
F
Rear foglamp 112
G
Side lamps 112
H
Dipped-beam headlamps 111
I
Main-beam headlamps 113
J
Brakes 286
K
ABS 28632
Instrument cluster (4-button steering wheel)At a glance

Warning and indicator lamps
Function Page
:
÷
ESP® 288
;
·
Distance warning 294
=
å
ESP®
OFF 288
?
J
Brakes 286
A
#!
Turn signals 113
B
!
ABS 286
C
6
SRS 291
D
;
Engine diagnostics 291
E
ü
Seat belt 284 Function Page
F
%
Diesel engine: pre-
glow 148
G
?
Coolant 292
H
K
Main-beam headlamp 113
I
L
Dipped-beam head-
lamps 111
J
T
Side lamps 112
K
R
Rear foglamp 112
L
N
Front foglamps 112
M
8
Reserve fuel 29234
Instrument cluster (12-button steering wheel)At a glance

X
To activate/deactivate: press button;.
If indicator lamp :is lit, operation of the
rear side windows is disabled. Operation is
only possible using the switches in the driv-
er's door. If indicator lamp :is off, oper-
ation is possible using the switches in the
rear compartment. Driving safety systems
Driving safety systems overview
In this section, you will find information about
the following driving safety systems:
R ABS ( Anti-lock BrakingSystem)
R BAS ( Brake Assist System)
R Adaptive brake lamps
R ESP ®
(Electronic StabilityProgram)
R EBD ( electronic brake force distribution) Important safety notes
If you fail to adapt your driving style or if you
are inattentive, the driving safety systems can
neither reduce the risk of accident nor over-
ride the laws of physics. Driving safety sys-
tems are merely aids designed to assist driv-
ing. You are responsible for the distance to
the vehicle in front, for vehicle speed and for
braking in good time. Always adapt your driv-
ing style to suit the prevailing road and
weather conditions and maintain a safe dis-
tance from the vehicle in front. Drive care-
fully.
i The driving safety systems described only
work as effectively as possible when there
is adequate contact between the tyres and
the road surface. Please pay special atten-
tion to the notes on tyres, recommended
minimum tyre tread depths, etc.
(Y page 350).
In wintry driving conditions, always use
winter tyres (M+S tyres) and, if necessary,
snow chains. Only in this way will the driv- ing safety systems described in this section
work as effectively as possible. ABS (Anti-lock Braking System)
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 65). G
WARNING
If ABS is faulty, the wheels could lock when
braking. The steerability and braking charac-
teristics may be severely impaired. Addition-
ally, further driving safety systems are deac-
tivated. There is an increased danger of skid-
ding and accidents.
Drive on carefully. Have ABS checked imme-
diately at a qualified specialist workshop.
If ABS is malfunctioning, other systems,
including driving safety systems, will also
become inoperative. Observe the information
on the ABS warning lamp ( Ypage 286) and
any display messages that may appear in the
instrument cluster (Y page 247) or
(Y page 252).
ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the vehi-
cle when braking.
ABS works from a speed of about 8 km/h
upwards, regardless of road-surface condi-
tions. ABS works on slippery surfaces, even
when you only brake gently.
The yellow !ABS warning lamp in the
instrument cluster lights up when the ignition
is switched on. It goes out when the engine is
running.
Brakes X
If ABS intervenes: continue to depress the
brake pedal with force until the braking sit-
uation is over.
X To make a full brake application:
depress the brake pedal with full force. Driving safety systems
65Safety Z

If ABS intervenes when braking, you will feel
a pulsing in the brake pedal.
The pulsating brake pedal can be an indica-
tion of hazardous road conditions, and func-
tions as a reminder to take extra care while
driving.
Off-road ABS (vehicles with the Off-
Road Engineering package) An ABS system specifically suited to off-road
terrain is activated automatically once the off-
road drive program (Y page 215) is activated.
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. This
limits steering capability. BAS (Brake Assist System)
i Observe the "Important safety notes" sec-
tion (Y page 65). G
WARNING
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased. There is a risk of accident.
In an emergency braking situation, depress
the brake pedal with full force. ABS prevents
the wheels from locking.
BAS operates in emergency braking situa-
tions. If you depress the brake pedal quickly,
BAS automatically boosts the braking force,
thus shortening the stopping distance.
X Keep the brake pedal depressed firmly until
the emergency braking situation is over.
ABS prevents the wheels from locking.
The brakes will function as usual once you
release the brake pedal. BAS is deactivated. BAS PLUS (Brake Assist System Plus)
i Observe the "Important safety notes" sec-
tion (Y page 65). BAS PLUS is only available on vehicles with
DISTRONIC PLUS.
BAS PLUS provides braking assistance in haz-
ardous situations at speeds greater than
7 km/h and uses radar sensor technology to
assess the traffic situation.
With the help of the radar sensor system, BAS
PLUS can detect obstacles that are in the
path of your vehicle for an extended period of
time.
At speeds up to approximately 70 km/h, BAS
PLUS may also detect stationary obstacles,
for example, stopped or parked vehicles.
To prevent a front-end collision, BAS PLUS
calculates the brake force necessary if:
R
you approach an obstacle, and
R BAS PLUS has detected a risk of collision
When driving at a speed over 30 km/h: if
you depress the brake sharply, BAS PLUS
automatically increases the brake pressure to
a degree suited to the traffic situation.
When driving at a speed under 30 km/h:
if you depress the brake, BAS PLUS is activa-
ted. Braking will be carried out at the last
possible moment.
If BAS PLUS demands particularly high brak-
ing force, preventative passenger protection
measures (PRE-SAFE ®
) are activated simul-
taneously.
X Keep the brake pedal depressed until the
emergency braking situation is over.
ABS prevents the wheels from locking.
BAS PLUS is deactivated and the brakes func-
tion as usual if:
R you release the brake pedal
R there is no longer any danger of a rear-end
collision
R no obstacle is detected in front of your
vehicle
Vehicles with COMAND and a navigation sys-
tem: the radar sensor system is switched off
automatically in the vicinity of radio telescope
facilities (Y page 375). 66
Driving safety systemsSafety

Vehicles without COMAND and a navigation
system and vehicles for Australia: the radar
sensor system and on-board computer must
be switched off in the vicinity of radio tele-
scope facilities (Y page 242).
For BAS PLUS to assist you when driving, the
radar sensor system must:
R be switched on (Y page 242)
R be operational (Y page 272)
If the radar sensor system is malfunctioning,
BAS PLUS will not be available. The brake
system is still available with complete brake
boosting effect and BAS. G
WARNING
BAS PLUS cannot always clearly identify
objects and complex traffic situations. BAS
PLUS cannot intervene in these cases. There
is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
In particular, the detection of obstacles can
be impaired if there is:
R dirt on the sensors or anything else cover-
ing the sensors
R snow or heavy rain
R interference by other radar sources
R the possibility of strong radar reflections,
for example, in multi-storey car parks
R a narrow vehicle travelling in front, e.g. a
motorcycle
R a vehicle travelling in front on a different
line G
WARNING
BAS PLUS does not react:
R to people or animals
R to oncoming vehicles
R to crossing traffic
R when cornering
As a result, BAS PLUS may not intervene in all
critical situations. There is a risk of an acci-
dent. Always pay careful attention to the traffic sit-
uation and be ready to brake.
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensors checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle. Adaptive brake lamps
i Adaptive brake lamps are only available in
certain countries.
If you brake sharply from a speed of more
than 50 km/h or if braking is assisted by BAS,
the brake lamps flash rapidly. In this way,
traffic travelling behind you is warned in an
even more noticeable manner.
If you brake sharply from a speed of more
than 70 km/h to a standstill, the hazard warn-
ing lamps are activated automatically. If the
brakes are applied again, the brake lamps
light up continuously. The hazard warning
lamps switch off automatically if you travel
faster than 10 km/h. You can also switch off
the hazard warning lamps using the hazard
warning switch button (Y page 114). ESP
®
(Electronic Stability Program)
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 65). G
WARNING
If ESP ®
is malfunctioning, ESP ®
is unable to
stabilise the vehicle. In addition, other driving
safety systems are switched off. This increa-
ses the risk of skidding and an accident.
Drive on carefully. Have ESP ®
checked at a
qualified specialist workshop. Driving safety systems
67Safety Z

!
Switch the ignition off when:
R the parking brake is being tested using a
dynamometer
R the vehicle is being towed with the front/
rear axle raised
Application of the brakes by ESP ®
may oth-
erwise destroy the brake system.
! Do not tow vehicles with 4MATIC with the
front or rear axle raised.
ESP ®
is deactivated if the åwarning lamp
in the instrument cluster lights up continu-
ously when the engine is running.
If the ÷ warning lamp and the åwarn-
ing lamp are lit continuously, ESP ®
is not
available due to a malfunction.
Observe the information on warning lamps
(Y page 288) and any display messages that
appear in the instrument cluster
(Y page 247) or (Y page 252).
If ESP ®
detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilise the
vehicle. If necessary, the engine output is also
modified to keep the vehicle on the desired
course within physical limits. ESP ®
assists
the driver when pulling away on wet or slip-
pery roads. ESP ®
can also stabilise the vehi-
cle during braking.
If ESP ®
intervenes, the ÷ESP®
warning
lamp flashes in the instrument cluster.
If ESP ®
intervenes:
X Do not deactivate ESP ®
under any circum-
stances.
X When pulling away, only depress the accel-
erator pedal as far as is necessary.
X Adapt your driving style to suit the prevail-
ing road and weather conditions.
i Only use wheels with the recommended
tyre sizes. Only then will ESP ®
function
properly. ETS/4ETS (Electronic Traction System) i
Observe the "Important safety notes" sec-
tion (Y page 65).
Traction control is part of ESP ®
.
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. On vehicles with 4MATIC, more drive
torque is also transferred to the wheel or
wheels with traction.
Traction control remains active if you deacti-
vate ESP ®
.
Deactivating/activating ESP ® i
Observe the "Important safety notes" sec-
tion (Y page 65). G
WARNING
If you deactivate ESP ®
, ESP ®
no longer sta-
bilises the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP ®
in the situations descri-
bed in the following. X
To switch off: press button:.
The å ESP®
OFF warning lamp in the
instrument cluster lights up.
X To switch on: press button:.
The å ESP®
OFF warning lamp in the
instrument cluster goes out.
ESP ®
is activated automatically when the
engine is started. 68
Driving safety systemsSafety

SAFE
®
Brake has detected a risk of collision,
you will be warned visually and acoustically
as well as by automatic braking. PRE-SAFE ®
Brake cannot prevent a collision without your
intervention.
This function will issue a warning if:
R at speeds of around 30 km/h or more, over
several seconds, the distance maintained
to the vehicle travelling in front is insuffi-
cient.
The · distance warning lamp then lights
up in the instrument cluster.
R at a speed of approximately 7 km/h or
higher, you very quickly approach a vehicle
in front.
An intermittent warning tone will then
sound and the ·distance warning lamp
will light up in the instrument cluster.
X Brake immediately in order to increase the
distance from the vehicle in front.
or
X Take evasive action provided it is safe to do
so.
From a speed of approximately 7 km/h, if the
driver and front passenger have fastened
their seat belts, PRE-SAFE ®
Brake can brake
the vehicle automatically at speeds up to
approximately 200 km/h.
Due to the nature of the system, particularly
complicated driving conditions may cause
unnecessary warnings or the unnecessary
intervention of PRE-SAFE ®
Brake.
You can prevent the intervention of the PRE-
SAFE ®
Brake at any time by:
R depressing the accelerator pedal further
R activating kickdown
R releasing the brake pedal The braking action of PRE-SAFE
®
Brake is
ended automatically if:
R you manoeuvre to avoid the obstacle.
R there is no longer any danger of a rear-end
collision.
R there is no longer an obstacle detected in
front of your vehicle.
With the help of the radar sensor system,
PRE-SAFE ®
Brake can detect obstacles that
are in front of your vehicle for an extended
period of time.
At speeds up to approximately 70 km/h, PRE-
SAFE ®
Brake can also detect stationary
obstacles such as stopped or parked vehi-
cles.
If you approach an obstacle and PRE-SAFE ®
Brake detects a risk of a collision, the system
will alert you both visually and acoustically. If
you do not brake or take evasive action, the
system will warn you by automatically braking
the vehicle gently. If there is an increased risk
of collision, preventative passenger protec-
tion measures (PRE-SAFE ®
) are activated
(Y page 48). If the risk of collision remains
and you do not brake, take evasive action or
accelerate significantly, the vehicle may per-
form automatic emergency braking. Auto-
matic emergency braking is not performed
until immediately prior to an accident that can
no longer be avoided. G
WARNING
PRE-SAFE ®
Brake will initially brake your vehi-
cle by a partial application of the brakes if a
danger of collision is detected. There may be
a collision unless you also brake. Automatic
emergency braking cannot prevent a colli-
sion. There is a risk of an accident.
Always apply the brakes yourself and try to
take evasive action. G
WARNING
PRE-SAFE ®
Brake cannot always clearly iden-
tify objects and complex traffic conditions. 70
Driving safety systemsSafety