belt MERCEDES-BENZ SLK250 2012 R172 Owner's Manual

Pulling away
................................... 134
Releasing the parking lock
manually ........................................ 146
Selector leve r................................ 140
Shift range s................................... 143
Starting the engine ........................133
Steering wheel paddle shifters ......142
Transmission position displa y........ 140
Transmission positions ..................141
Automatic transmission
emergency mode ............................... 146 B
Back support see Lumbar support
Backup lamp
Changing bulbs .............................. 112
Display message ............................ 215
BAS (Brake Assist System) .................57
Basic settings see Settings
BAS PLUS (Brake Assist System
PLUS) .................................................... 57
Battery (SmartKey) Checking .......................................... 71
Important safety notes ....................71
Replacing ......................................... 71
Battery (vehicle)
Charging ........................................ 283
Display message ............................ 218
Important safety notes ..................282
Jump starting ................................. 285
Belt
see Seat belts
Bottle holder ...................................... 246
Brake Assist System see BAS (Brake Assist System)
Brake fluid
Display message ............................ 206
Notes ............................................. 327
Brake fluid level ................................ 263
Brake lamps Display message ............................ 214
Brakes
ABS .................................................. 56
BAS .................................................. 57
BAS PLUS ........................................ 57Brake fluid (notes)
.........................327
Display message ............................ 200
Driving tips .................................... 153
High-performance brake system ....154
Important safety notes ..................153
Maintenance .................................. 154
Parking brake ................................ 150
Warning lamp ................................. 229
Breakdown
see Flat tire
see Towing away/tow-starting
Bulbs
see Changing bulbs C
California Important notice for retail
customers and lessees ....................21
Calling up a malfunction
see Display messages
Capacities
see Technical data
Car
see Vehicle
Care
Carpets .......................................... 271
Car wash ........................................ 265
Display ........................................... 269
Exterior lights ................................ 268
Gea rors electo rlever .................... 270
Interior ........................................... 269
Matte finish ................................... 267
Notes ............................................. 265
Paint .............................................. 267
Plastic trim .................................... 269
Power washer ................................ 266
Roof lining ...................................... 271
Seat bel t........................................ 270
Seat cover ..................................... 270
Sensors ......................................... 269
Steering wheel ............................... 270
Tai lpipes ....................................... 269
Trim pieces .................................... 270
Washing by hand ........................... 266
Wheels ........................................... 266
Windows ........................................ 268 Index
5

Wiper blades
.................................. 268
Wooden trim .................................. 270
Car wash (care) ................................. 265
CD player/CD changer (on-board
computer) .......................................... 188
Center console Lowe rsection .................................. 31
Uppe rsection .................................. 30
Central locking
Automatic locking (on-board
computer) ...................................... 193
Locking/unlocking (SmartKey) ........68
Changing bulbs
High-beam headlamps ...................111
Important safety notes ..................109
Low-beam headlamps ....................111
Overview of bul btypes .................. 110
Parking lamps ................................ 112
Removing/replacing the cover
(front wheel arch) .......................... 111
Reversing lamps ............................ 112
Standing lamps (front) ...................112
Turn signals (front) ......................... 112
Children
In the vehicle ................................... 53
Restraint systems ............................ 53
Child seat
Specia lseat belt retractor ...............55
Cigarette lighter ................................ 247
Cleaning Mirro rturn signal ........................... 268
Climate control
Air-conditioning system .................117
Automatic climate control (dual-
zone) .............................................. 119
Controlling automatically ...............122
Cooling with aird ehumidification..121
Defrosting the windshield ..............124
Important safety notes ..................116
Indicator lamp ................................ 122
Maximum cooling .......................... 124
Notes on using automatic climate
control ........................................... 120
Notes on using the air-
conditioning system ....................... 118
Overview of systems ......................116
Problems with cooling with air
dehumidification ............................ 122Problem with the rear window
defroster
........................................ 125
Setting the aird istribution.............123
Setting the airflow .........................123
Setting the airv ents...................... 126
Setting the temperature ................122
Switching air-recirculation mode
on/off ............................................ 125
Switching on/off ........................... 121
Switching residual hea ton/off ......125
Switching the rear window
defroster on/off ............................ 124
Switching the ZONE function on/
off .................................................. 123
Cockpit
Overview .......................................... 26
see Instrument cluster
Collapsible spare wheel
Inflating ......................................... 280
see Emergency spare wheel
COMAND
see separate operating instructions
Combination switch ..........................107
Consumption statistics (on-board
computer) .......................................... 185
Convenience closing feature ..............81
Convenience opening feature see Opening/closing the side
windows (all)
Coolan t(engine)
Checkin gthe level ......................... 262
Display message ............................ 216
Filling capacity ............................... 328
Notes ............................................. 327
Temperature (on-board computer) .195
Temperature gauge ........................ 181
Warning lamp ................................. 235
Cooling
see Climate control
Cornering light (display message) ...213
Cornering light function Function/notes ............................. 108
Crash-responsive emergency
lighting ............................................... 109
Cruise control Cruise control leve r....................... 156
Deactivating ................................... 158
Display message ............................ 2226
Index

Refueling
Fuelgauge ....................................... 27
Important safety notes ..................146
Refueling proces s.......................... 147
see Fuel
Releasing the parking lock
manually (automatic
transmission) ..................................... 146
Remote control Garage door opene r....................... 254
Programming (garage door
opener) .......................................... 255
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 219
Warning lamp ................................. 234
see Fuel
Residual heat (climate control) ........125
Restraint system see SRS (Supplemental Restraint
System)
Reverse gear
Engaging (automatic
transmission) ................................. 140
Engaging (manual transmission) ....139
Reversible floor panel (trunk) ..........244
Roadside Assistance (breakdown) ....21
Roof Display message ............................ 225
Important safety notes ....................82
Opening/closing (with roof
switch) ............................................. 84
Opening/closing (with SmartKey) ....84
Problem (malfunction) .....................86
Relocking ......................................... 85
Roof carrier ........................................ 245
Roof lining and carpets (cleaning
guidelines) ......................................... 271
Roof switch .......................................... 83
Route (navigation) see Route guidance (navigation)
Route guidance (navigation) ............186 S
Safety Childre ninthe vehicle ..................... 53
Child restraint systems ....................53
Occupant Classification System
(OCS) ............................................... 42
Overview of occupant safety
systems ........................................... 36
Safety systems
see Driving safety systems
Seat belts
Adjusting the driver's and front-
passenger sea tbelt ......................... 51
Belt force limiters ............................ 52
Cleaning ......................................... 270
Correct usage .................................. 49
Emergency Tensioning Devices ....... .52
Fastening ......................................... 50
Important safety guidelines .............48
Releasing ......................................... 51
Safety guidelines ............................. 37
Specia lseat belt retractor ...............55
Switching belt adjustment on/off
(on-board computer) ......................194
Warning lamp ................................. 228
Warning lamp (function) ................... 51
Seats
Adjusting (electrically). ....................94
Adjusting (manually )........................ 94
Adjusting the 4-way lumbar
support ............................................ 95
Adjusting the head restraint ............95
Cleaning the cover .........................270
Correct driver's seat position ........... 92
Important safety notes ....................93
Seat heating problem ......................96
Storing settings (memory
function) ........................................ 100
Switching AIRSCARF on/off ............96
Switching sea theating on/off .........95
Sensors (cleaning instructions) .......269
Service Center see Qualified specialist workshop
Service interval display
Displaying service messages .........264
Hiding service messages ...............264 14
Index

Warning and indicator lamps
Function Page
0002
0009
Low-beam
headlamps 105
0003
0008
High-beam
headlamps 107
0023
000B
ESP® 231
0022
Electric parking brake (red) 229
0005
(USA only) 000A
(Canada only) 0020
000A
Electric parking brake
(yellow) 229
0021
000C
Distance warning 237
0014
00070006
Turn signals 107
0015
0015
Tire pressure monitor 238
0016
0019
SRS 233 Function Page
0017
001A
Seat belt 228
0018
0002
SPORT handling
mode in AMG vehicles 232
0019
000C
Coolant 235
001A
000C
Rearfog lamp 106
001B
000A
Front fog lamps 106
001C
000E
Engine Check 234
001E
0010
Reserve fuel 234
001F
0012
ESP®
OFF 231
0025
0014
ABS 230
0026
Brakes 229
000D
(USA only) 0006
(Canada only) 28
Instrument clusterAt a glance

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).Occupant safety
Overview of occupant safety
In this section, you will learn the most
important facts about the restraint system
components of the vehicle.
The restraint system consists of:
R seat belts
R child restraint systems
Additional protection is provided by:
R SRS (Supplemental Restrain tSystem)
R NECK-PRO head restraints
R Airb ag system component swith:
- PASSENGER AIR BAG ON/OFF indicator
lamp 2
- front-passenger seat with Occupant
Classification System (OCS)
The differen tair bag systems work
independently of each other. The protective
functions of the system work in conjunction
with each other. Not all air bags are deployed
in an accident. G
WARNING
Modifications to or work improperly
conducted on restraint system components
or their wiring, as well as tampering with
interconnected electronic systems, can lead to the restraint systems no longer functioning
as intended.
Air bags or Emergency Tensioning Devices
(ETDs), for example, could deploy
inadvertently or fail to deploy in accidents
although the deceleration threshold for air
bag deploymen tis exceeded. Therefore,
never modify the restraint systems. Do not
tamper with electronic components or their
software.
i See "Children in the vehicle"
(Y page 53) for more information on
infants and children traveling with you in
the vehicle and restraints for infants and
children. SRS (Supplemental Restraint System)
Introduction SRS consists of:
R
the 0019 SRS warning lamp
R air bags
R air bag control unit (with crash sensors)
R Emergency Tensioning Devices
R belt force limiters
SRS reduces the risk of occupants coming
into contact with the vehicle's interior in the
event of an accident. It can also reduce the
effect of the forces to which occupants are
subjected during an accident.
SRS warning lamp SRS functions are checked regularly when
you switch on the ignition and when the
engine is running. Therefore, malfunctions
can be detected in good time.
The
0019 SRS warning lamp in the instrument
cluster lights up when the ignition is switched
on. It goes out no later than a few seconds
after the engine is started.
2 The PASSENGER AIR BAG ON indicator lamp has no function. When switching on the ignition, it lights up
briefly and then goes out again. 36
Occupant safetySafety

The SRS components are in operational
readiness if the
0019SRS warning lamp is not
lit while the engine is running. G
WARNING
The SRS self-check has detected a
malfunction if the 0019SRS indicator lamp:
R does not light up at all
R does not go out after approximately four
seconds after the engine is started
R comes on after the engine was started or
while driving.
For your safety, Mercedes-Benz strongly
recommends that you have the system
checked as soon as possible at an authorized
Mercedes-Benz Center. SRS may otherwise
fail to activate when it is needed in the event
of an accident, which could lead to serious or
fatal injuries. SRS might also be activated
unexpectedly and unnecessarily, which could
also result in injury.
In addition, work carried out improperly on
SRS may render SRS inoperative or cause
unintended air bag deployment. Work on the
SRS system should only be carried out by
qualified specialist personnel. Consult an
authorized Mercedes-Benz Center.
If it is necessary to modify an air bag system
to accommodate a person with disabilities,
contact an authorized Mercedes-Benz Center
for details. USA only: for further information
contact our Customer Assistance center at
1-800-FOR-MERCedes (1-800-367-6372).
Safety guidelines for seat belts,
Emergency Tensioning Devices (ETDs)
and air bags G
WARNING
R Damaged seat belts or seat belts that have
been subjected to stress in an accident
must be replaced. Their anchoring points
must also be checked. Only use seat belts installed or supplied by an authorized
Mercedes-Benz Center.
R Air bags and pyrotechnic Emergency
Tensioning Devices (ETDs) contain
perchlorate material, which may require
special handling and regard for the
environment.C heck your national disposal
guidelines. California residents, see
www.dtsc.ca.gov/HazardousWaste/
Perchlorate/index.cfm.
R Air bags and ETDs are designed to function
on a one-time-only basis. An air bag or ETD
that has deployed must be replaced.
R Do not pass seat belts over sharp edges.
They could tear.
R Do not make any modification that could
change the effectiveness of the seat belts.
R Do not bleach or dye seat belts as this may
severely weaken them. In a crash they may
not be able to provide adequate protection.
R No modifications of any kind may be made
to any components or wiring of the SRS.
R Do not change or remove any component
or part of the SRS.
R Do not install additional trim material, seat
covers, badges, etc. over the steering
wheel hub, front-passenger front air bag
cover, outer sides of the seat backrests,
door trim panels, or door frame trims.
R Do not install additional electrical/
electronic equipment on or near SRS
components and wiring.
R Keep area between air bags and occupants
free of objects (e.g. packages, purses,
umbrellas, etc.).
R Air bag system components will be hot after
an air bag has inflated. Do not touch them.
R Never place your feet on the instrument
panel, dashboard, or on the seat. Always
keep both feet on the floor in front of the
seat.
R Improper repair work on the SRS creates a
risk of rendering the SRS inoperative or
causing unintended air bag deployment.
Work on the SRS must therefore only be Occupant safety
37Safety
Z

performed by qualified technicians.
Contact an authorized Mercedes-Benz
Center.
R For your protection and the protection of
others, when scrapping the air bag unit or
ETD, our safety instructions must be
followed. These instructions are available
from any authorized Mercedes-Benz
Center.
R Given the considerable deployment speed,
required inflation volume, and the material
of the air bags, there is the possibility of
abrasions or other, potentially more serious
injuries resulting from air bag deployment.
If you sell your vehicle, Mercedes-Benz
strongly recommends that you inform the
subsequent owner that the vehicle is
equipped with SRS. Also, refer them to the
applicable section in the Operator's Manual. Air bags
Important safety notes G
WARNING
Air bags are designed to reduce the incidence
of injuries and fatalities in certain situations:
R frontal impacts (driver's and front-
passenger fron tair bags and knee bags)
R side impacts (side impact air bags and head
bags)
R rollover (head bags)
However, no system available today can
completely eliminate injuries and fatalities.
When the air bags are deployed, a small
amount of powder is released .The powder
generally does not constitute a health hazard
and does not indicate that there is a fire in the
vehicle. In order to prevent potential
breathing difficulties, you should leave the
vehicle as soon as it is safe to do so. If you
have any breathing difficulty but cannot get
out of the vehicle after the air bag inflates,
then get fresh air by opening a window or
door. G
WARNING
In order to reduce the potential danger of
injuries caused during the deployment of the
front air bags, the driver and front passenger
must always be correctly seated and wear
their seat belts.
For maximum protection in the event of a
collision, you must always be in the normal
seat position with your back against the
backrest. Fasten your seat belt and make sure
that it is correctly positioned on your body.
As the air bag inflates with considerable
speed and force, a proper seating position
and correct positioning of the hands on the
steering wheel will help to keep you at a safe
distance from the air bag. Occupants who are
not wearing their seat belt, are not seated
properly or are too close to the air bag can be
seriously injured or killed by an air bag, as it
inflates with great force instantaneously:
R sit with the seat belt fastened correctly and
in a position that is as upright as possible
with your back against the backrest.
R move the driver's seat as far back as
possible, still permitting proper operation
of vehicle controls. The distance from the
center of the driver's chest to the center of
the air bag cover on the steering wheel
must be at least 10 inches (25 cm). You
should be able to accomplish this by
adjusting the seat and steering wheel. If
you have any difficulties, please contact an
authorized Mercedes-Ben zCenter.
R do not lean your head or chest close to the
steering wheel or dashboard.
R only hold the steering wheel on the outside.
Placing hands and arms inside the rim of
the steering wheel can increase the risk
and potential severity of hand/arm injuries
if the air bag inflates.
R adjust the front-passenger seat as far back
as possible from the dashboard when the
seat is occupied.
R occupants, especially children, should
never place their bodies or lean their heads
in the area of the door where the side 38
Occupant safetySafety

impact air bag and/or head bag inflates.
This could result in serious or fatal injuries
should the side impact air bag and/or head
bag be deployed. Always sit as upright as
possible, wear the seat belt properly and
use an appropriately sized infant restraint,
toddler restraint or booster seat
recommended for the size and weight of the
child.
Failure to follow these instructions can result
in severe injuries to you or other occupants.
If you sell your vehicle, it is importan tthat you
make the buyer aware of this safety
information. Be sure to give the buyer this
Operator's Manual. G
WARNING
If the side impact air bag and/or head bag is
deployed in the event of a side impact and the
front passenger, especially achild, is not
properly seated or restrained when next to a
side impact air bag/head bag, injuries are
possible due to the rapid inflation of the side
impact air bag/head bag.
To help avoid the possibility of injury, please
follow these guidelines:
(1) Always sit as upright as possible, and use the seat belts properly.
Make sure that children 12 years
old and under use an appropriately
sized child restraint, infant
restraint or booster seat
recommended for the size and
weight of the child.
(2) Always wear seat belts properly.
The air bags are only deployed if the air bag
control unit detects the need for deployment.
Only in the event of such a situation will they
provide their supplemental protection.
The driver and passenger should always wear
their seat belts. Otherwise, it is not possible
for the air bags to provide their supplemental
protection.
In the event of other types of impacts and
impacts below air bag deployment thresholds, the air bags will not deploy.T
he
driver and passengers will then be protected
to the extentp ossible by a properly fastened
seat belt. Aproperly fastened seat belti s also
needed to provide the best possible
protection in a rollover.
Air bags provide additional protection; they
are not, however, a substitute for seat belts.
All vehicle occupants must fasten their seat
belts regardless of whether your vehicle is
equipped with air bags or not.
It is important for your safety and that of your
passenger to have deployed air bags replaced
and to have any malfunctioning air bags
repaired. This will help to make sure the air
bags continue to perform their protective
function for the vehicle occupants in the
event of a crash.
Front air bags The front air bags increase protection for the
driver's and front-passenger's head and
chest.
0002
Driver's air bag
0003 Front-passenger front air bag
0023 Front-passenger knee bag
0022 Driver's knee bag
Driver's air bag 0002deploys in front of the
steering wheel; front-passenger front air
bag 0003deploys in front of and above the glove
box. Occupant safety
39Safety Z

They are deployed:
R
in the event of certain frontal impacts
R if the system determines that air bag
deployment can offer additional protection
to that provided by the seat belt
R if the seat belt is fastened
R independently of other air bags in the
vehicle
If the vehicle overturns, the fronta ir bags are
generally not deployed. If the system detects
high vehicle deceleration in alongitudinal
direction, the front air bags are deployed.
Your vehicle has adaptive, two-stage front air
bags. In the event of a collision, the air bag
control unit evaluates the vehicle
deceleration. In the first deployment stage,
the front air bag is filled with enough
propellant gas to reduce the risk of injuries.
The front air bag is fully deployed if a second
deployment threshold is exceeded within a
few milliseconds.
The deployment of the front-passenger front
air bag is also influenced by the weight
category of the front passenger, which is
determined by the Occupant Classification
System (OCS) (Y page 42).
The lighter the passenger-side occupant, the
higher the vehicle deceleration rate required
(predicted at the start of the impact) for
second stage inflation of the front-passenger
front air bag. In the second stage, the front
air bags are inflated with the maximum
amount of propellant gas available.
The front air bags are not deployed in
situations where a low impact severity is
predicted. You will then be protected by the
fastened seat belt. The front-passenger front air bag will only
deploy if:
R
the system, based on the OCS weight
sensor readings, detects that the front-
passenger seat is occupied.
R the 00030005 indicator lamp in the center
console is not lit, (Y page 42).
R the air bag control unit predicts a high
impact severity.
Knee bags G
WARNING
Observe "Important safety notes"
(Y page 38).
Knee bags provide increased protection for
the driver and front passenger against the risk
of:
R knee injuries
R thigh injuries
R lower leg injuries
Driver's knee bag 0022(Ypage 39) deploys
underneath the steering column and front-
passenger knee bag 0023(Ypage 39)
underneath the glove box. They deploy
together with the front air bags. They are
designed to operate together with the front
air bags in frontal impacts if certain
thresholds are exceeded. The knee bags
operate at best in conjunction with correctly
positioned and fastened seat belts.
Side impact air bags G
WARNING
The pressure sensors for side impact air bag
control are located in the doors. Do not
modify any components of the doors or door
trim panels including, for example, the
addition of door speakers.
Improper repair work on the doors or the
modification or addition of components to the
doors create a risk of rendering the side
impact air bags inoperative or causing
unintended air bag deployment. Work on the 40
Occupant safetySafety

doors must therefore only be performed by
qualified technicians. Contact an authorized
Mercedes-Benz Center. G
WARNING
Only use seat covers which have been tested
and approved by Mercedes-Benz for your
vehicle model. Using other seat covers may
interfere with or prevent the deployment of
the side impact air bags. Contact an
authorized Mercedes-Benz Center for
availability.
When deployed, the side impact air bags offer
additional protection for the thorax of the
vehicle occupants on the side of the vehicle
on which the impact occurs. However, they
do not protect the:
R head
R neck
R arms Side impact air bags
0002deploy nex tto the
outer seat cushions.
Side impact air bags 0002are deployed:
R on the side on which an impact occurs
R at the start of an accident with a high rate
of lateral vehicle deceleration or
acceleration, e.g. in aside impact
R depending on whether the seat belt is being
used
R independently of the front air bags
R independently of the ETDs
If the vehicle overturns, the side impac tair
bags are generally not deployed. Exception: if the system detects high vehicle deceleration
or acceleration in a lateral direction and
determines that deploymen
tcan offer
additional protection to that provided by the
seat belt.
Side impac tair bags will not deploy in side
impacts which do not exceed the system's
prese tdeployment thresholds for lateral
acceleration/deceleration .You will then be
protected by the fastened seat belt.
The side impact air bag on the front-
passenger side will not deploy under the
following conditions:
R the OCS detects that the front-passenger
seat is not occupied.
R the front-passenger seat belt is not
fastened.
The side impact air bag on the front-
passenger side will deploy if the front-
passenger seat belt is fastened, regardless of
whether the front-passenger seat is occupied
or not.
Head bags G
WARNING
Observe "Important safety notes"
(Y page 38).
Head bags enhance the level of protection for
the head, but not the chest or arms, of the
vehicle occupants in the front of the vehicle
on the side on which the impact occurs. Head bags
0002deploy in the area of the side
windows at the front.T hey are deployed: Occupant safety
41Safety Z