Changing bulb MERCEDES-BENZ R-Class 2012 W251 Owner's Manual

B
Back support see Lumbar support
Backup lamp
Changing bulbs .............................. 123
Display message ............................ 224
BAS (Brake Assist System) ................. 65
Basic settings see Settings
Battery (key)
Checking .......................................... 76
Battery (SmartKey)
Important safety notes ....................76
Replacing ......................................... 76
Battery (vehicle)
Charging ........................................ 312
Display message ............................ 227
Important safety notes ..................310
Jump starting ................................. 313
Belt
see Seat belts
Blind Spot Assist
Activating/deactivating .................210
Display message ............................ 230
Notes/function .............................. 189
Trailer towing ................................. 191
BlueTEC
Adding DEF .................................... 161
BlueTEC (DEF) .................................... 357
Brake Assist System see BAS (Brake Assist System)
Brake fluid
Display message ............................ 217
Notes ............................................. 359
Brake fluid level ................................ 286
Brake lamps Display message ............................ 223
Brakes
ABS .................................................. 65
BAS .................................................. 65
Brake fluid (notes) .........................359
Display message ............................ 214
Driving tips .................................... 166
Important safety notes ..................166
Maintenance .................................. 167
Parking brake ........................ 164, 168
Warning lamp ................................. 239Breakdown
see Flat tire
see Towing away
Bulbs
see Changing bulbs
C
California Important notice for retail
customers and lessees ....................22
Calling up a malfunction
see Display messages
Capacities
see Technical data
Car
see Vehicle
Care
Carpets .......................................... 294
Car wash ........................................ 288
Display ........................................... 292
Exterior lights ................................ 291
Gear or selector lever ....................293
Matte finish ................................... 290
Notes ............................................. 287
Paint .............................................. 290
Plastic trim .................................... 292
Power washer ................................ 289
Rear view camera .......................... 292
Roof lining ...................................... 294
Seat belt ........................................ 293
Seat cover ..................................... 293
Sensors ......................................... 291
Steering wheel ............................... 293
Tail pipes ....................................... 292
Trim pieces .................................... 293
Washing by hand ........................... 289
Wheels ........................................... 289
Windows ........................................ 291
Wiper blades .................................. 291
Wooden trim .................................. 293
Cargo compartment cover
Extending ....................................... 260
Notes/how to use .........................258
Cargo compartment enlargement
Full ................................................. 253
Important safety notes ..................253
Partial ............................................ 253
Index5

Cargo compartment floor ................. 296
Cargo net Attaching ....................................... 261
Important safety information .........260
Cargo tie down rings ......................... 257
Car wash (care) ................................. 288
CD player/CD changer (on-board
computer) .......................................... 203
Cell phone see Mobile phone
Center console
2nd row of seats ............................ 251
Lower section .................................. 33
Upper section .................................. 32
Central locking
Automatic locking (on-board
computer) ...................................... 208
Locking/unlocking (SmartKey) ........72
Changing bulbs
High-beam headlamps ...................122
Important safety notes ..................119
License plate lighting .....................124
Low-beam headlamps ....................121
Overview of bulb types ..................120
Parking lamps ................................ 122
Removing/replacing the cover
(front wheel arch) .......................... 121
Reversing lamps ............................ 123
Side marker lamps .........................123
Standing lamps (front) ...................122
Turn signals (front) ......................... 122
Child-proof locks
Important safety notes ....................63
Rear doors ....................................... 63
Children
In the vehicle ................................... 56
Restraint systems ............................ 56
Child seat
LATCH-type (ISOFIX ) child seat
anchors ............................................ 58
Special seat belt retractor ...............58
Top Tether ....................................... 60
Cigarette lighter ................................ 266
Classification system for
occupants (OCS) Faults ............................................... 48
Operation ......................................... 44
System self-test ............................... 47Climate control
Automatic climate control (3-
zone) .............................................. 132
Controlling automatically ...............136
Cooling with air dehumidification ..135
Defrosting the windshield ..............138
Demisting the windows .................. 139
Dual-zone automatic climate
control ........................................... 131
Important safety notes ..................130
Indicator lamp ................................ 136
Notes on using automatic climate
control ................................... 131, 134
Overview of systems ......................130
Problems with cooling with air
dehumidification ............................ 136
Problem with the rear window
defroster ........................................ 139
Rear control panel .........................132
Refrigerant ..................................... 359
Setting the air distribution .............138
Setting the airflow .........................138
Setting the air vents ......................141
Setting the temperature ................137
Switching air-recirculation mode
on/off ............................................ 140
Switching on/off ........................... 134
Switching residual heat on/off ......140
Switching the MONO function on/
off .................................................. 138
Switching the rear window
heating on/off ............................... 139
Clock (on-board computer) ............... 206
Cockpit Overview .......................................... 28
see Instrument cluster
Collapsible spare wheel
Inflating ......................................... 307
see Emergency spare wheel
COMAND
see separate operating instructions
Combination switch .......................... 117
Compass Calling up ....................................... 278
Consumption statistics (on-board
computer) .......................................... 210
Convenience closing feature .............. 88
Convenience opening feature ............ 876Index

Fuel filler flapEmergency release ........................158
Opening/closing ............................ 158
Fuel filter (display message) ............ 228
Fuel level Calling up the range (on-board
computer) ...................................... 211
Fuel tank
Capacity ........................................ 355
Problem (malfunction) ...................160
Fuse allocation chart (vehicle tool
kit) ...................................................... 296
Fuses Allocation chart ............................. 317
Before changing ............................. 317
Dashboard fuse box .......................318
Engine emergency stop .................319
Fuse box in the cargo
compartment ................................. 318
Fuse box in the engine
compartment ................................. 318
Important safety notes ..................317
G
Garage door opener Clearing the memory .....................278
Notes ............................................. 275
Opening/closing the garage door ..278
Programming (button in the rear-
view mirror) ................................... 276
Gasoline ............................................. 157
Gear or selector lever (cleaning
guidelines) ......................................... 293
Genuine Mercedes-Benz parts ......... 352
Glove box ........................................... 249
GTW (Gross Trailer Weight)
(definition) ......................................... 344
H
Handbrake see Parking brake
Hazard warning lamps ...................... 117
Headlamp cleaning system Notes ............................................. 360
Headlamp delayed switch-off
see Exterior lighting delayed switch-off
Headlamps
Adding fluid to cleaning system .....285
Cleaning system (function) ............117
Misting up ...................................... 118
see Automatic headlamp mode
Head restraints
Adjusting ......................................... 99
Adjusting (electrically) .....................99
Adjusting (manually) ........................99
Adjusting (rear) .............................. 100
Installing/removing (rear) ..............100
Luxury .............................................. 99
see NECK-PRO head restraints/
NECK-PRO luxury head restraints
Heating
see Climate control
High-beam headlamps
Changing bulbs .............................. 122
Display message ............................ 223
Switching on/off ........................... 117
Hill start assist .................................. 147
Hood Closing ........................................... 283
Display message ............................ 235
Opening ......................................... 282
Hydroplaning ..................................... 168
I
Ignition lock see SmartKey positions
Immobilizer .......................................... 68
Indicator and warning lamps DISTRONIC .................................... 245
Indicator lamps
see Warning and indicator lamps
Insect protection on the radiator .... 283
Instrument cluster Overview .......................................... 29
Selecting the language (on-board
computer) ...................................... 206
Settings ......................................... 205
Warning and indicator lamps ...........30
Instrument cluster lighting ................ 29
Instrument lighting see Instrument cluster lighting
Interior lighting
Automatic control ..........................119
10Index

Delayed switch-off (on-board
computer) ...................................... 208
Emergency lighting ........................119
Manual control ............................... 119
Overview ........................................ 118
Reading lamp ................................. 118
see Interior lighting
J
Jack Storage location ............................ 296
Using ............................................. 305
Jump starting (engine) ...................... 313
K
Key see SmartKey
KEYLESS-GO
Convenience closing feature ............88
Display message ............................ 236
Locking ............................................ 73
Start/Stop button .......................... 145
Starting the engine ........................147
Unlocking ......................................... 73
Key positions
KEYLESS-GO .................................. 145
SmartKey ....................................... 145
Kickdown ........................................... 153
L
Lamps see Warning and indicator lamps
Lane-change assistant
see Blind Spot Assist
Language (on-board computer) ........ 206
LATCH-type (ISOFIX) child seat
anchors ................................................ 58
Level control (display message) ...... 229
License plate lamp Changing bulbs .............................. 124
Display message ............................ 223
Lighting
see Lights
Lights
Activating/deactivating the
exterior lighting delayed switch-
off .................................................. 207
Activating/deactivating the
interior lighting delayed switch-off . 208
Automatic headlamp mode ............115
Display message ............................ 222
Driving abroad ............................... 114
Fog lamps ...................................... 116
Hazard warning lamps ...................117
High beam flasher .......................... 117
High-beam headlamps ...................117
Light switch ................................... 114
Low-beam headlamps ....................115
Parking lamps ................................ 114
Rear fog lamp ................................ 116
Switching the daytime running
lamps on/off (on-board
computer) ...................................... 206
Switching the daytime running
lamps on/off (switch) ....................115
Switching the surround lighting
on/off (on-board computer) ..........207
Turn signals ................................... 117
see Changing bulbs
see Interior lighting
Light sensor (display message) ....... 225
LIM indicator lamp Cruise control ................................ 171
DISTRONIC .................................... 175
Loading guidelines ............................ 248
Locking see Central locking
Locking (doors)
Automatic ........................................ 80
Emergency locking ........................... 81
From inside (central locking
button) ............................................. 80
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 208
Low-beam headlamps Changing bulbs .............................. 121
Display message ............................ 222Index11

Convenience submenu ..................209
Displaying a service message ........287
Displaying the coolant
temperature ................................... 202
Displaying the outside
temperature ................................... 202
Display messages ..........................213
DISTRONIC menu .......................... 178
Factory settings ............................. 205
Important safety notes ..................198
Instrument cluster submenu ..........205
Lighting submenu .......................... 206
Menu overview .............................. 201
Message memory menu ................. 213
Navigation menu ............................ 204
Operating video DVD .....................204
Operation ....................................... 199
Selecting the language ..................206
Settings menu ............................... 205
Standard display ............................ 202
Status bar ...................................... 206
Telephone menu ............................ 211
Time/Date submenu .....................206
Trip computer menu ......................210
Vehicle submenu ........................... 208
Opening and closing the side trim
panels ................................................. 123
Operating system see On-board computer
Outside temperature
Calling up (on-board computer) .....202
Display ........................................... 198
Overhead control panel ...................... 34
Override feature Rear side windows ...........................63
P
Paint code number ............................ 353
Paintwork (cleaning instructions) ... 290
Panic alarm .......................................... 64
Panorama roof with power tilt/
sliding panel Opening/closing .............................. 91
Opening/closing the roller
sunblind ........................................... 91
Problem (malfunction) .....................92
Resetting ......................................... 92
Panorama sliding sunroof
Important safety notes ....................89
Parking
Important safety notes ..................163
Parking brake ................................ 164
Position of exterior mirror, front-
passenger side ............................... 111
Rear view camera .......................... 187
see Parking
see PARKTRONIC
Parking aid
see Exterior mirrors
see PARKTRONIC
Parking brake
Display message ............................ 217
Notes/function .............................. 164
see Parking brake
Parking lamps (changing bulbs) ...... 122
PARKTRONIC Deactivating/activating .................186
Driving system ............................... 184
Function/notes ............................. 184
Problem (malfunction) ...................187
Range of the sensors .....................184
Trailer towing ................................. 186
Warning display ............................. 185
Pedals ................................................. 165
Permanent four-wheel drive see 4MATIC (permanent four-
wheel drive)
Plastic trim (cleaning instructions) . 292
Power washers .................................. 289
Power windows see Side windows
PRE-SAFE ®
(Preventive occupant
safety system) Display message ............................ 218
Operation ......................................... 49
PRE-SAFE ®
Brake (vehicles with
DISTRONIC PLUS) Warning lamp ................................. 245
Preventive occupant safety
system
see PRE-SAFE ®
(Preventive
occupant safety system)
Product information ............................ 21
Program selector button .................. 153Index13

SeatFolding down the 2nd row of
seats .............................................. 254
Important safety notes ....................97
Resetting the 2nd row of seats ......256
Resetting the 3rd row of seats ....... 256
Seat belts
Adjusting the driver's and front-
passenger seat belt .........................54
Adjusting the height ......................... 54
Belt force limiters ............................ 55
Cleaning ......................................... 293
Correct usage .................................. 52
Emergency Tensioning Devices ........ 55
Fastening ......................................... 53
Important safety guidelines .............51
Releasing ......................................... 54
Safety guidelines ............................. 39
Special seat belt retractor ...............58
Switching belt adjustment on/off
(on-board computer) ......................209
Warning lamp ................................. 238
Warning lamp (function) ................... 54
Seats
Adjusting (electrically) .....................98
Adjusting (second and third rows) . 101
Adjusting the 4-way lumbar
support .......................................... 105
Adjusting the head restraint ............99
Cleaning the cover .........................293
Correct driver's seat position ........... 96
Folding down the 3rd row of seats . 255
Folding the rear bench seat
forwards/back ............................... 253
Multicontour seat .......................... 105
Seat heating problem ....................106
Seat ventilation problem ................107
Storing settings (memory
function) ........................................ 112
Switching seat heating on/off .......106
Switching the seat ventilation on/
off .................................................. 106
Securing hooks .................................. 258
Sensors (cleaning instructions) ....... 291
Service see ASSYST PLUS service interval
display Service interval display
Displaying service messages .........287
Hiding service messages ...............287
Notes ............................................. 287
Service messages ..........................287
Service products
Brake fluid ..................................... 359
Capacities ...................................... 355
Coolant (engine) ............................ 359
DEF special additives .....................357
Engine oil ....................................... 358
Fuel ................................................ 356
Important safety notes ..................354
Refrigerant (air-conditioning
system) .......................................... 359
Washer fluid ................................... 360
Settings
Factory (on-board computer) .........205
On-board computer .......................205
Setting the air distribution ............... 138
Setting the airflow ............................ 138
Side impact air bag ............................. 42
Side marker lamp (display
message) ............................................ 224
Side marker lamps (changing
bulbs) ................................................. 123
Side windows Convenience closing feature ............88
Convenience opening feature ..........87
Hinged side windows .......................87
Important safety information ...........86
Opening/closing .............................. 86
Problem (malfunction) .....................89
Resetting ......................................... 89
Sliding sunroof
Important safety notes ....................89
Opening/closing .............................. 90
Problem (malfunction) .....................92
Resetting ......................................... 90
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery .......................76
Changing the programming .............75
Checking the battery .......................76
Convenience closing feature ............88
Convenience opening feature ..........87
Display message ............................ 236Index15

Door central locking/unlocking .......72
Important safety notes ....................72
Loss ................................................. 78
Mechanical key ................................ 75
Positions (ignition lock) .................145
Problem (malfunction) .....................78
Starting the engine ........................146
Snow chains .............................. 169, 325
Sockets 2nd row of seats ............................ 268
Center console .............................. 268
Front-passenger footwell ...............268
Luggage compartment ...................268
Points to observe before use .........267
Spare wheel
Notes/data .................................... 349
Storage location ............................ 297
Stowing .......................................... 298
see Emergency spare wheel
Specialist workshop ............................ 24
Speed, controlling see Cruise control
Speedometer
Additional speedometer (on-
board computer) ............................ 202
In the Instrument cluster .................29
Segments ...................................... 199
Selecting the unit of
measurement ................................ 205
see Instrument cluster
SRS (Supplemental Restraint
System) Display message ............................ 218
Introduction ..................................... 38
Warning lamp ................................. 243
Warning lamp (function) ................... 38
Standing lamps
Changing bulbs .............................. 122
Display message ............................ 224
Switching on/off ........................... 114
Starting (engine) ................................ 146
Station see Radio
Steering (display message) .............. 235
Steering wheel Adjusting (electrically) ...................108
Adjusting (manually) ......................107
Button overview ............................... 31Buttons (on-board
computer) ...................................... 199
Important safety notes ..................107
Paddle shifters ............................... 153
Steering wheel heating ..................108
Storing settings (memory
function) ........................................ 112
Steering wheel (cleaning
instructions) ...................................... 293
Steering wheel heating Indicator lamp (malfunction) ..........108
Switching on/off ........................... 108
Steering wheel paddle shifters ........ 153
Stowage compartments 3rd row of seats ............................. 250
Armrest (under) ............................. 250
Center air vents (2nd row of
seats) ............................................. 250
Center console (2nd row of seats) . 250
Glove box ....................................... 249
Parcel net ...................................... 251
Stowage space
Center console .............................. 249
Cup holders ................................... 262
Important safety information .........248
Summer opening
see Convenience opening feature
Summer tires ..................................... 324
Sun visor ............................................ 264
Supplement Restraint System see SRS (Supplemental Restraint
System)
Surround lighting (on-board
computer) .......................................... 207
Switching air-recirculation mode
on/off ................................................. 140
Switching off the alarm (ATA) ............ 69
T
Tachometer ........................................ 198
Tailgate Display message ............................ 235
Important safety notes ....................81
Limiting the opening angle ...............85
Opening/closing (automatically
from inside) ...................................... 84
16Index

Maximum load on a tire
(definition) ..................................... 345
Maximum permissible tire
pressure (definition) ....................... 344
Maximum tire load .........................337
Maximum tire load (definition) .......344
Optional equipment weight
(definition) ..................................... 345
PSI (pounds per square inch)
(definition) ..................................... 345
Replacing ....................................... 346
Service life ..................................... 323
Sidewall (definition) .......................345
Speed index (definition) .................344
Storing ........................................... 347
Structure and characteristics
(definition) ..................................... 343
Temperature .................................. 339
TIN (Tire Identification Number)
(definition) ..................................... 345
Tire bead (definition) ......................345
Tire pressure (definition) ................345
Tire pressures (recommended) ......343
Tire size (data) ............................... 347
Tire size designation, load-bearing
capacity, speed index ....................340
Tire tread ....................................... 323
Tire tread (definition) .....................345
Total load limit (definition) .............346
Traction ......................................... 338
Traction (definition) .......................345
Tread wear ..................................... 338
TWR (permissible trailer drawbar
noseweight) (definition) .................345
Uniform Tire Quality Grading
Standards ...................................... 338
Uniform Tire Quality Grading
Standards (definition) ....................343
Unladen weight (definition) ............344
Wear indicator (definition) .............346
Wheel rim (definition) ....................344
see Flat tire
Top Tether ............................................ 60
Towing Important safety guidelines ...........315
Installing the towing eye ................315
Removing the towing eye ...............316Towing a trailer
Coupling up a trailer ......................192
Decoupling a trailer .......................193
Driving tips .................................... 191
Important safety notes ..................191
Lights display message ..................222
Power supply ................................. 194
Shift range ..................................... 153
Towing away
With both axles on the ground .......316
Tow-starting
Emergency engine starting ............317
Important safety notes ..................315
Trailer
Towing ........................................... 192
Trailer loads and drawbar
noseweights ...................................... 194
Trailer towing Blind Spot Assist ............................ 191
ESP ®
................................................ 67
PARKTRONIC ................................. 186
Permissible trailer loads and
drawbar noseweights .....................194
Towing a trailer .............................. 192
Transmission
see Automatic transmission
Transporting the vehicle .................. 316
Trim pieces (cleaning instructions) . 293
Trip computer (on-board
computer) .......................................... 210
Trip meter see Trip odometer
Trip odometer
Calling up ....................................... 202
Resetting (on-board computer) ......211
Trunk
see Tailgate
Turn signals
Changing bulbs (front) ...................122
Display message ............................ 222
Switching on/off ........................... 117
see Turn signals
TWR (Tongue Weight Rating)
(definition) ......................................... 345
Type identification plate see Vehicle identification plate 18Index

GDANGER
Xenon bulbs carry a high voltage. You could
get an electric shock and be seriously or even
fatally injured if you touch the electric
contacts on Xenon bulbs. Therefore, never
remove the cover from Xenon bulbs.
Do not change Xenon bulbs yourself, but have
them replaced at a qualified specialist
workshop which has the necessary specialist
knowledge and tools to carry out the work
required.
Mercedes-Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose. In particular, work relevant to safety
or on safety-related systems must be carried
out at a qualified specialist workshop.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly.
Other bulbs
There are bulbs other than the Xenon bulbs
that you cannot replace. Replace only the
bulbs listed (Y page 120). Have the bulbs that
you cannot replace yourself changed at a
qualified specialist workshop.
Mercedes-Benz recommends that you use an
authorized Mercedes-Benz Center for this
purpose. In particular, work relevant to safety
or on safety-related systems must be carried
out at a qualified specialist workshop.
If you require assistance changing bulbs,
consult a qualified specialist workshop.
Do not touch the glass tube of new bulbs with
your bare hands. Even minor contamination
can burn into the glass surface and reduce
the service life of the bulbs. Always use a lint-
free cloth or only touch the base of the bulb
when installing.
Only use bulbs of the correct type.
If the new bulb still does not light up, consult
a qualified specialist workshop.
Bulbs and lamps are an important aspect of
vehicle safety. You must therefore make sure
that these function correctly at all times.
Have the headlamp setting checked regularly.GWARNING
Bulbs and lamps can be very hot. You should
therefore allow them to cool down before you
change them. Otherwise, you could be burned
if you touch them.
Keep bulbs out of the reach of children.
Otherwise, they could damage the bulbs, for
example, and injure themselves.
Never use a bulb which has been dropped.
Such a bulb may break or even explode and
injure you.
Halogen bulbs are pressurized and can
explode when you change them, particularly
if they are very hot. You should therefore wear
eye protection and gloves when you are
changing them.
Overview: changing bulbs/bulb types
You can change the following bulbs. The bulb
type can be found in the legend.
Halogen headlamps
:High-beam headlamp: H7 55 W;Parking lamp/standing lamp: W 5 W BV=Turn signal lamp: WY 5 W?Low-beam headlamp: H7 55 WASide marker lamp: WY 5 W120Replacing bulbsLights and windshield wipers

Bi-Xenon headlamps
:Side marker lamp: WY 5 W;Turn signal lamp: WY 5 W=Parking lamp/standing lamp: W 5 W BV
Tail lamp
:Backup lamp: W 16 W
License plate lamp
:License plate lamp: C 5 WChanging the front bulbs
Removing and installing the cover in the
front wheel arch
You must remove the cover from the front
wheel housing before you can change the
front bulbs.
XTo remove: switch off the lights.XTurn the front wheels inwards.XTurn rotary catch : 90° counter-
clockwise.XPull away the cover and lift it off.XTo install: re-insert the cover.XTurn rotary catch : 90° clockwise.
Low-beam headlamps (halogen
headlamps)
XRemove the cover in the front wheel arch
( Y page 121).XTurn housing cover : counter-clockwise
and pull it out.Replacing bulbs121Lights and windshield wipersZ