check engine 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

Electroni
cbrake force distribution ...62
ESP ®
(Electronic Stability
Program) .......................................... 58
ETS (Electronic Traction System) .....59
Important safety information ...........56
Overview .......................................... 56
PRE-SAFE ®
Brake ............................ .62
Driving systems
ATTENTION ASSIST ........................ 176
Cruis econtrol ................................ 156
Display message ............................ 219
DISTRONI CPLUS ........................... 158
Dynami chandling package ............168
HOLD function ............................... 168
Parking Guidance ........................... 173
PARKTRONI C................................. 170
Driving tips
Automatic transmission .................141
Brakes ........................................... 153
Break-in period .............................. 130
DISTRONI CPLUS ........................... 166
Downhill gradient ........................... 153
Drinking and driving .......................152
Driving abroad ............................... 104
Driving in winter ............................ .155
Driving on flooded road s................ 155
Driving on wet road s...................... 155
Exhaus tcheck ............................... 153
Fuel ................................................ 152
General .......................................... 152
Hydroplaning ................................. 155
Icy road surfaces ........................... 155
Limited braking efficiency on
salted road s................................... 154
Pedals. ........................................... 152
Snow chains .................................. 297
Symmetrical low bea m.................. 104
Wet road surface ........................... 153
DVD audio (on-board computer) ......188
DVD video (on-board computer) ......189
Dynamic handling package Function/notes ............................. 168 E
EASY-ENTRY feature Activating/deactivating .................194
Function/notes ................................ 97
EASY-EXIT feature
Crash-responsive ............................. 98
Function/notes ................................ 97
Switching on/off ........................... 194
EBD (electronic brake force
distribution)
Display message ............................ 202
Function/notes ................................ 62
ECO start/stop function
Deactivating/activating .................136
General information .......................135
Important safety notes ..................135
Electrical fuses
see Fuses
Electronic brake force distribution
see EBD (electronic brake force
distribution)
Electronic Stability Program
see ESP ®
(Electroni cStability Program)
Electronic Traction System
see ETS (Electronic Traction System)
Emergenc yrelease
Driver's door .................................... 76
Trunk ............................................... 79
Vehicle ............................................. 76
Emergency spare wheel
Storage location ............................ 274
Stowing .......................................... 275
Emergency Tensioning Devices
Function .......................................... .52
Safety guideline s............................. 37
Emissions control
Service and warranty information ....20
Engine
Check Engine warning lamp ........... 234
Display message ............................ 216
ECO start/stop function ................135
Engine number ............................... 324
Irregularr unning............................ 138
Jump-starting ................................. 285
Starting problems ..........................138
Starting the engine with the key ....133
Starting with KEYLESS-GO .............133 8
Index

Switching off
.................................. 150
Tow-starting (vehicle) ..................... 289
Engine electronics
Problem (malfunction) ...................138
Engine oil
Adding ........................................... 262
Additives ........................................ 327
Checking the oil level ..................... 261
Checking the oil level using the
dipstick .......................................... 261
Display message ............................ 218
Filling capacity ............................... 327
Notes about oil grades ................... 326
Notes on oil level/consumption ....261
Temperature (on-board computer) .195
Viscosity ........................................ 327
ESP ®
(Electronic Stability
Program) AMG menu (on-board computer) ...196
Deactivating/activating (AMG
vehicles) .......................................... 60
Deactivating/activating (notes;
except AMG vehicles) ......................59
Display message ............................ 200
ETS .................................................. 59
Function/notes ................................ 58
Important safety information ...........58
Warning lamp ................................. 231
ETS (Electronic Traction System) ....... 59
Exhaus tcheck ................................... 153
Exhaus ttail pipe (cleaning
instructions) ...................................... 269
Exterior lighting see Lights
Exterior mirrors
Adjusting ......................................... 98
Dipping (automatic) .........................99
Folding in/ou t(automatically) .........99
Folding in/ou t(electrically) .............99
Folding in whe nlocking (on-board
computer) ...................................... 195
Out of position (troubleshooting) .....99
Storing settings (memory
function) ........................................ 100
Storing the parking position ..........100
Eyeglasses compartment .................243 F
Fille rcap
see Fuel filler flap
First-aid kit ......................................... 274
Flat tire Changing a wheel/mounting the
spare wheel ................................... 276
MOExtended run-fla tsystem ......... 281
Preparing the vehicle .....................275
Raising the vehicle .........................277
see Emergency spare wheel
Floormat ............................................ .257
Front fog lamps ................................. 106
Display message ............................ 214
Switching on/off ........................... 106
Fron twindshield
see Windshield
Fuel
Additives ........................................ 326
Consumption statistic s.................. 185
Displaying the current
consumption .................................. 185
Displaying the range ......................185
Driving tips .................................... 152
Fuel gauge ....................................... 27
Grade (gasoline) ............................ 325
Important safety notes ..................325
Premium-grade unleaded gasoline .325
Problem (malfunction) ...................149
Refueling ........................................ 146
Tank content/reserve fuel .............325
Fuel filler flap, opening/closing ....... 147
Fuel level Calling up the range (on-board
computer) ...................................... 185
Fuel tank
Capacity ........................................ 325
Problem (malfunction) ...................149
Fuse allocation chart (vehicle tool
kit) ...................................................... 274
Fuses Allocation chart ............................. 290
Before changing ............................. 290
Fuse box in the engine
compartment ................................. 290
Fuse box in the trunk .....................290
Important safety notes ..................289 Index
9

Notes
............................................. 264
Service messages ..........................264
Service menu (on-board computer) .191
Service products Brake fluid ..................................... 327
Coolant (engine) ............................ 327
Engine oil ....................................... 326
Fuel ................................................ 325
Important safety notes ..................324
Washer fluid .................................. .328
Settings
Factory (on-board computer) .........195
On-board computer .......................191
Setting the air distribution ...............123
Setting the airflow ............................123
SETUP (on-board computer) .............196
Side impact air bag .............................40
Side marker lamp (display
message) ............................................ 215
Side windows Convenience closing feature ............81
Important safety information ...........80
Opening/closing (all) .......................80
Opening/closing (front) ...................80
Problem (malfunction) .....................82
Resetting ......................................... 82
SmartKey
Changing the battery .......................71
Changing the programming .............70
Checking the battery .......................71
Convenience opening feature ..........81
Display message ............................ 226
Door central locking/unlocking .......68
Important safety notes ....................68
Loss ................................................. 73
Mechanical key ................................ 70
Opening/closing the roof ................84
Positions (ignition lock) .................131
Problem (malfunction) .....................73
Starting the engine ........................133
Snow chains ...................................... 297
Sockets Center console .............................. 248
Points to observe before use .........247
Under the armrest .........................248
Spare wheel
Notes/data .................................... 318Storage location
............................ 274
Stowing .......................................... 275
see Emergency spare wheel
Specialist workshop ............................ 23
Speed, controlling see Cruise control
Speedometer
Activating/deactivating the
additional speedometer .................192
Digita l............................................ 186
In the Instrument cluster .................27
Segments ...................................... 181
Selecting the unit of
measurement ................................ 191
see Instrument cluster
SPORT handling mode
Activating/deactivating (AMG
vehicles) .......................................... 60
Warning lamp ................................. 232
SRS (Supplemental Restraint
System)
Display message ............................ 208
Introduction ..................................... 36
Warning lamp ................................. 233
Warning lamp (function) ................... 36
Standing lamps
Changing bulbs .............................. 112
Display message ............................ 215
Switching on/off ........................... 104
Starting (engine) ................................ 132
Station see Radio
Steering (display message) ..............225
Steering wheel Adjusting (electrically). ....................97
Adjusting (manually). .......................97
Button overview ............................... 29
Buttons (on-board
computer) ...................................... 181
Cleaning ......................................... 270
Important safety notes ....................96
Paddle shifters ............................... 142
Storing settings (memory
function) ........................................ 100
Steering wheel paddle shifters ........142
Stopwatch (RACETIMER) ................... 196
Stowage areas ................................... 242 Index
15

Stowage compartments
Armrest (front). .............................. 243
Armrest (under) ............................. 243
Center console .............................. 243
Cuph olders ................................... 245
Door ............................................... 244
Eyeglasses compartment ...............243
Glove box ...................................... .242
Important safety information .........242
Parce lnet ...................................... 244
Rea rwall........................................ 244
Summer opening
see Convenience opening feature
Summer tires ..................................... 296
Sun visor ............................................ 246
Supplemental Restraint System see SRS (Supplemental Restraint
System)
Surround lighting (on-board
computer) .......................................... 193
Switching air-recirculation mode
on/off ................................................. 125
Switching off the alarm (ATA) ............65 T
Tachometer ........................................ 181
Tail lamps Display message ............................ 214
see Lights
Tank
see Fuel tank
Tank content
Fuel gauge ....................................... 27
Technical data
Notes ............................................. 322
Tires/wheels ................................. 316
Vehicle data ................................... 329
TELEAID
Call priority .................................... 252
Display message ............................ 207
Downloading destinations
(COMAND) ..................................... 252
Emergency call .............................. 249
Important safety notes ..................248
Locating astolen vehicl e............... 254
MB info call button ........................251
Remote vehicle locking ..................254Roadside Assistance button
..........251
Search &Send ............................... 253
Self-test ......................................... 249
System .......................................... 249
Vehicle remote unlocking ..............253
Telephone
Accepting acall............................. 189
Display message ............................ 225
Menu (on-board computer) ............189
Number from the phone book ....... .190
Redialing ........................................ 190
Rejecting/ending acall................. 190
Temperature
Coolant .......................................... 181
Coolant (on-board computer) ......... 195
Engine oil (on-board computer) ...... 195
Outside temperature ..................... .181
Setting (climate control) ................122
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........65
Immobilize r...................................... 64
Time
see Separate Operator's Manual
Timing (RACETIMER) .........................196
Tiredness assistant see ATTENTION ASSIST
Tire pressure
Calling up (on-board computer) .....301
Checking manually ........................301
Display message ............................ 222
Maximum ....................................... 300
Notes ............................................. 299
Recommended ............................... 297
Tire pressure monitoring system
Function/notes ............................. 301
Restarting ...................................... 303
Warning lamp ................................. 238
Tires
Aspect ratio (definition) .................314
Average weight of the vehicle
occupants (definition) ....................313
Bar (definition) ............................... 312
Characteristics .............................. 312
Checking ........................................ 295
Definition of terms .........................312
Direction of rotatio n...................... 316
Display message ............................ 22216
Index

Trunk partition
Display message ............................ 225
General notes .................................. 85
Opening/closing .............................. 85
Turn signals
Changing bulbs (front) ...................112
Display message ............................ 213
Switching on/off ........................... 107
Type identification plate
see Vehicle identification plate U
Unlocking Emergency unlocking .......................76
From inside the vehicle (central
unlocking button) ............................. 75V
Vanity mirror (in the sun visor) ........246
Vehicle Correct use ...................................... 23
Data acquisition ............................... 24
Display message ............................ 224
Emergency unlocking .......................76
Equipment ....................................... 20
Individua lsettings .......................... 191
Limited Warranty ............................. 24
Loading .......................................... 304
Locking (in an emergency) ...............76
Locking (SmartKey) .......................... 68
Lowering ........................................ 281
Maintenance .................................... 21
Parking for a long period ................ 151
Pulling away ................................... 133
Raising ........................................... 277
Reporting problems .........................23
Towing away .................................. 287
Tow-starting ................................... 287
Transporting .................................. 289
Unlocking (in an emergency) ...........76
Unlocking (SmartKey) ......................68
Vehicle data ................................... 329
Vehicle battery
see Battery (vehicle)
Vehicle data ....................................... 329
Vehicle dimensions ...........................329Vehicle emergency locking
................76
Vehicle identification number see VIN
Vehicle identification plate ..............323
Vehicle tool kit .................................. 274
Video (DVD) ........................................ 189
VIN ...................................................... 323 W
Warning and indicator lamps ABS ................................................ 230
Brakes ........................................... 229
Check Engine ................................. 234
Coolant .......................................... 235
Distance warning ........................... 237
DISTRONI CPLUS ........................... 237
ESP ®
.............................................. 231
ESP ®
OFF ....................................... 232
Fuel tank ........................................ 234
Overview .......................................... 28
PASSENGER AIR BAG OFF
indicator lamp .................................. 42
Reserve fuel ................................... 234
Seat bel t........................................ 228
SPORT handling mode ...................232
SRS ................................................ 233
Tire pressure monitor ....................238
Warranty ............................................ 323
Washer fluid Display message ............................ 226
Wheel bol ttightening torque ...........281
Wheel chock ...................................... 276
Wheels Changing awheel .......................... 276
Checking ........................................ 295
Cleaning ......................................... 266
Important safety notes ..................294
Interchanging/changing ................315
Mounting anew wheel ................... 279
Removing awheel .......................... 279
Storing ........................................... 316
Tightening torque ........................... 281
Whee lsize/tir esize ....................... 316
Windows
Cleaning ......................................... 268
see Side windows 18
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