
1, 2, 3 ...
12-button multifunction steering
wheel Operating the on-board computer .228
Overview .......................................... 36
12 V socket
see Socket
4-button multifunction steering
wheel
Operating the on-board computer .225
Overview .......................................... 35
4ETS
see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 213A
ABS (Anti-lock Braking System) Display message (12-button mul-
tifunction steering wheel) ..............252
Display message (4-button multi-
function steering wheel) ................247
Function/notes ................................ 65
Important safety notes ....................65
Warning lamp ................................. 286
Activating/deactivating air-recir-
culation mode .................................... 135
Activating/deactivating cooling
with air dehumidification .................131
Active Blind Spot Assist Function/notes ............................. 207
Switching on/off (on-board com-
puter, 12-button multifunction
steering wheel) .............................. 237
Towing a trailer .............................. 210
Active Driving Assistance package .207
Active Lane Keeping Assist Display message (12-button mul-
tifunction steering wheel) ..............273
Function/notes ............................. 210
Switching on/off (on-board com-
puter, 12-button multifunction
steering wheel) .............................. 238
Towing a trailer ......................207, 213
Active light function .........................114Active Park Assist
Display message ............................ 273
Active Parking Assist
Important safety notes ..................192
Towing a trailer .............................. 196
Active Service System
see ASSYST PLUS
Adaptive brake lamps .........................67
Adaptive Highbeam Assist Display message (12-button mul-
tifunction steering wheel) ..............263
Function/notes ............................. 116
Adaptive Main-beam Assist
Switching on/off (on-board com-
puter) ............................................. 240
AdBlue ®
Display message (12-button mul-
tifunction steering wheel) ..............269
Display message (4-button multi-
function steering wheel) ................266
Filling capacity ............................... 369
Notes ............................................. 368
Service indicator ............................ 313
AdBlue ®
service indicator ................313
Additional speedometer ...................239
Additives (engine oil) ........................370
Adjusting the headlamp range .........112
Airbags Front airbag (driver, front
passenger) ....................................... 46
Important safety guidelines .............44
Kneebag .......................................... .46
Pelvis airbag .................................... 47
Sidebag ............................................ 47
Triggering ......................................... 43
Windowba g...................................... 48
Air-conditioning system
see Climate control
Air filter
Display message (12-button mul-
tifunction steering wheel) ..............268
Display message (4-button multi-
function steering wheel) ................265
Air pressure
see Tyre pressure 4
Index

Setting the air vents
......................141
Setting the climate mode .............. .132
Setting the temperature ................132
Switching air-recirculation mode
on/off ............................................ 135
Switching on/off ........................... 131
Switching residual heat on/off ......136
Switching the rear window heat-
ing on/off ...................................... 135
Switching the ZONE function on/
off .................................................. 134
THERMATIC automatic climate
control (2-zone) ............................. 129
THERMOTRONIC (3-zone) auto-
matic climate control .....................130
Clock
Setting (4-button multifunction
steering wheel) .............................. 227
Coat hooks ......................................... 303
Cockpit Overview .......................................... 30
see Instrument cluster
Collapsible emergency spare
wheel
see Emergency spare wheel
COMAND Online
see separate operating instructions
Combination switch ..........................113
Constant headlamp mode see Daytime driving lights
Consumption statistics
On-board computer (12-button
multifunction steering wheel) ........230
On-board computer (4-button
multifunction steering wheel) ........226
Convenience closing feature ..............90
Convenience opening/closing (air-
recirculation mode) ........................... 136
Convenience opening feature ............90
Coolant (engine) Checking the level .........................316
Display message (12-button mul-
tifunction steering wheel) ..............267
Display message (4-button multi-
function steering wheel) ................264
Important safety notes ..................371
Temperature gauge (12-button
multifunction steering wheel) ........227 Temperature gauge (4-button
multifunction steering wheel)
........224
Warning lamp ................................. 292
Cooling
see Climate control
Cornering lamps
Changing bulbs .............................. 121
Cornering light function
Display message (12-button mul-
tifunction steering wheel) ..............260
Display message (4-button multi-
function steering wheel) ................257
Function/notes ............................. 115
Crash-responsive emergency light-
ing ....................................................... 118
Cruise control Cruise control lever .......................174
Deactivating ................................... 175
Display message (12-button mul-
tifunction steering wheel) ..............275
Display message (4-button multi-
function steering wheel) ................270
Driving system ............................... 173
Important safety notes ..................173
LIM indicator lamp .........................174
Selecting ........................................ 174
Setting a speed .............................. 175
Storing and maintaining current
speed ............................................ .174
Cup holder
Centre console .............................. 305
Important safety notes ..................305
Rear compartment .........................305 D
Dashboard lighting see Instrument cluster lighting
Data
see Technical data
Date
Setting (4-button multifunction
steering wheel) .............................. 227
Daytime driving lamps
Switching on/off (on-board com-
puter, 12-button multifunction
steering wheel) .............................. 2398
Index

Daytime driving lights
Display message (12-button mul-
tifunction steering wheel) ..............262
Display message (4-button multi-
function steering wheel) ................259
Switching on/off (on-board com-
puter, 4-button multifunction
steering wheel) .............................. 227
Switching on/off (switch) ..............111
Dealership
see Qualified specialist workshop
Delayed switch-off
Exterior lighting (12-button multi-
function steering wheel) ................240
Interior lighting (12-button multi-
function steering wheel) ................241
Diagnostics connection ......................26
Diesel particle filter ..........................167
Digital speedometer .........................231
Dipped beam Display message (4-button multi-
function steering wheel) ................257
Dipped-beam headlamps
Changing bulbs .............................. 120
Display message (12-button mul-
tifunction steering wheel) ..............260
Setting for driving abroad (sym-
metrical) ........................................ 110
Switching on/off ........................... 111
DIRECT SELECT lever
see Automatic transmission
Display (cleaning instructions) ........322
Display message (12-button multi-
function steering wheel)
ASSYST PLUS ................................ 312
Calling up ....................................... 246
Driving systems ............................. 271
Engine ............................................ 267
General notes ................................ 245
Hiding ............................................ 245
Key ................................................ 283
KEYLESS-GO .................................. 283
Lights ............................................ .260
Safety systems .............................. 252
Tyres .............................................. 277
Vehicle .......................................... .279 Display message (4-button multi-
function steering wheel)
ASSYST PLUS ................................ 312
Calling up ....................................... 245
Driving systems ............................. 270
Engine ............................................ 264
General notes ................................ 245
Hiding ............................................ 245
Key ................................................ 281
KEYLESS-GO .................................. 281
Lights ............................................ .257
Safety systems .............................. 247
Tyres .............................................. 276
Vehicle .......................................... .278
Distance display (on-board com-
puter, 12-button multifunction
steering wheel) .................................. 236
Distance recorder 12-button multifunction steering
wheel ............................................. 230
Distance warning signal (warning
lamp) .................................................. 294
DISTRONIC PLUS Deactivating ................................... 184
Display message (12-button mul-
tifunction steering wheel) ..............274
Displays in the multifunction dis-
pla y................................................ 184
Driving tips .................................... 185
Function/notes ............................. 178
Important safety notes ..................178
Selecting ........................................ 179
Setting the specified minimum
distance ......................................... 183
Warning lamp ................................. 294
Door
Automatic door locking feature
(on-board computer, 12-button
multifunction steering wheel) ........241
Automatic locking (switch) .............. .83
Central locking/unlocking (key) ......76
Control panel ................................... 40
Display message (12-button mul-
tifunction steering wheel) ..............280
Display message (4-button multi-
function steering wheel) ................278
Emergency locking ........................... 84
Emergency unlocking .......................84 Index
9

Fuse box in the luggage compart-
ment
.............................................. 347
Important safety notes ..................346 G
Gear or selector lever (cleaning
instructions) ...................................... 322
Genuine Mercedes-Benz parts .........362
Glove compartment ..........................297 H
Handbrake see Parking brake
Hazard warning lamps ......................114
Headlamp Cleaning system (function) ............114
Cleaning system (notes) ................372
Headlamps
Misting up ...................................... 117
Topping up the cleaning system ....317
see Automatic headlamp mode
Head restraints
Adjusting ......................................... 98
Adjusting (electrically) .....................99
Adjusting (manually). .......................98
Adjusting (rear) ................................ 99
Fitting/removing (rear) ....................99
see NECK-PRO head restraints
see NECK-PRO head restraints/
NECK-PRO luxury head restraints
Heating
see Climate control
High-pressure cleaners ....................318
Hill start assist .................................. 150
HOLD function Display message (12-button mul-
tifunction steering wheel) ..............271
Display message (4-button multi-
function steering wheel) ................270
Function/notes ............................. 186 I
Ignition lock see Key positions
Immobiliser .......................................... 71Indicator and warning lamps
Coolant .......................................... 292
DISTRONIC PLUS ........................... 294
Engine diagnostics .........................291
Fuel tank ........................................ 292
Overview (12-button multifunc-
tion steering wheel) .........................34
Overview (4-button multifunction
steering wheel) ................................ 32
Indicator lamps
see Warning and indicator lamps
Insect protection on the radiator ....315
Inspection see ASSYST PLUS
Instrument cluster (12-button mul-
tifunction steering wheel)
Indicator and warning lamps ............34
Overview .......................................... 33
Settings ......................................... 238
Instrument cluster (4-button mul-
tifunction steering wheel)
Indicator and warning lamps ............32
Overview .......................................... 31
Instrument cluster lighting ..............239
Multifunction steering wheel with
4 buttons ....................................... 224
Intelligent Light System
Activating/deactivating (12-but-
ton multifunction steering wheel) ..240
Display message (12-button mul-
tifunction steering wheel) ..............263
Overview ........................................ 114
Interior lighting ................................. 117
Automatic control system ..............118
Delayed switch-off (12-button
multifunction steering wheel) ........241
Emergency lighting ........................118
Manual control ............................... 118
Overview ........................................ 117
Reading lamp ................................. 117
Setting brightness for display/
switches (on-board computer) .......239
Interior motion sensor ........................73
ISOFIX child seat securing system ....57 Index
13

J
Jack Storage location ............................ 327
Using ............................................. 333
Jump start (engine)
see Jump starting (engine)
Jump starting (engine) ......................341 K
Key Changing the battery .......................79
Checking the battery .......................79
Convenience closing feature ............90
Convenience opening feature ..........90
Display message (4-button multi-
function steering wheel) ................281
Door central locking/unlocking .......76
Emergency key element ................... 78
Important safety notes ....................76
Loss ................................................. 81
Modifying the programming .............78
Positions (ignition lock) .................147
Problem (malfunction) .....................81
Starting the engine ........................148
KEYLESS-GO
Convenience closing ........................90
Display message (12-button mul-
tifunction display) ..........................283
Display message (4-button multi-
function display) ............................ 281
Locking ............................................ 77
Start/Stop button .......................... 147
Starting the engine ........................149
Unlocking ......................................... 77
Key positions
Key ................................................ 147
KEYLESS GO .................................. 147
Keys
Display message (12-button mul-
tifunction steering wheel) ..............283
Kickdown
Driving tips .................................... 158
Manual drive program ....................160
Kneebag ............................................... 46 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating .................238
Display message (12-button mul-
tifunction steering wheel) ..............273
Function/informatio n.................... 205
Lane package ..................................... 203
Lashing eyelets ................................. 299
Licence plate lighting Display message (12-button mul-
tifunction steering wheel) ..............262
Display message (4-button multi-
function steering wheel) ................259
Lighting
see Lights
Lights
Activating/deactivating the exte-
rior lighting delayed switch-off
(12-button multifunction steering
wheel) ............................................ 240
Activating/deactivating the inte-
rior lighting delayed switch-off
(12-button multifunction steering
wheel) ............................................ 241
Active light function .......................114
Automatic headlamp mode ............111
Cornering light function .................115
Dipped-beam headlamps ...............111
Driving abroad ............................... 110
Foglamps ....................................... 112
Foglamps (extended range) ...........115
Hazard warning lamps ...................114
Headlamp flasher ........................... 113
Headlamp range ............................ 112
Light switch ................................... 111
Main-beam headlamps ................... 113
Motorway mode ............................. 115
Off-road lights ................................ 115
Parking lamps ................................ 112
Rear foglamp ................................. 112
Setting brightness for display/
switches (on-board computer) .......239
Side lamps ..................................... 112
Switching Adaptive Highbeam
Assist on/off ................................. 24014
Index

Towing
Important safety notes ..................342
With the rear axle raised ................344
Towing a trailer
Active Blind Spot Assist .................210
Active Lane Keeping Assist .... 207, 213
Active Parking Assist .....................196
Lights display message (12-but-
ton multifunction steering wheel) ..260
Lights display message (4-button
multifunction steering wheel) ........257
Towing away
Fitting the towing eye ....................343
Removing the towing eye ...............344
With both axles on the ground .......344
Tow-starting
Emergency engine starting ............345
Fitting the towing eye ....................343
Important safety notes ..................342
Removing the towing eye ...............344
Trailer coupling
see Towing a trailer
Trailer towing
7-pin connector ............................. 221
Blind Spot Assist ............................ 205
Cleaning the trailer tow hitch ......... 321
Coupling up a trailer ......................220
Decoupling a trailer .......................220
Driving tips .................................... 215
ESP ®
................................................ 69
Fitting the ball coupling .................217
Important safety notes ..................215
Mounting dimensions ....................373
Parktroni c...................................... 191
Power supply ................................. 221
Removing the ball coupling ............220
Shift range ..................................... 158
Storing the ball coupling ................220
Trailer loads ................................... 374
Transmission
see Automatic transmission
see Manual transmission
Transmission position display .........156
Transmission position display
(DIRECT SELECT lever) ......................156
Transporting the vehicle ..................345Travelling uphill
Brow of hill ..................................... 173
Driving downhill ............................. 173
Maximum gradient-climbing capa-
bility .............................................. .173
Trim pieces (cleaning instructions) .323
Trip computer On-board computer (12-button
multifunction steering wheel) ........230
On-board computer (4-button
multifunction steering wheel) ........226
Trip meter
Displaying/resetting (4-button
multifunction steering wheel) ........226
Displaying (12-button multifunc-
tion steering wheel) .......................230
Resetting (12-button multifunc-
tion steering wheel) .......................232
Turn signal
Display message (12-button mul-
tifunction steering wheel) ..............261
Display message (4-button multi-
function steering wheel) ................258
see Turn signals
Turn signals
Changing bulbs (front) ...................120
Changing bulbs (rear) ....................121
Switching on/off ........................... 113
TV
Operating (on-board computer) .....234
see Separate operating instructions
Two-way radio
Frequencies ................................... 363
Installation ..................................... 363
Transmission output (maximum) .... 363
Type identification plate
see Vehicle identification plate
Tyre pressure
Display message (12-button mul-
tifunction steering wheel) ..............277
Display message (4-button multi-
function steering wheel) ................276
Not reached (TIREFIT) ....................331
Pressure loss warning ....................355
Reached (TIREFIT) ..........................331
Recommended ............................... 353
Tyres
Checking ........................................ 351 22
Index

Cockpit
Function Page
:
Automatic transmission:
steering wheel gearshift
paddles
159
;
Combination switch 113
=
Instrument cluster (4-but-
ton steering wheel)
31
Instrument cluster (12-but-
ton steering wheel) 33
?
Horn
A
PARKTRONIC warning dis-
play
188
B
Overhead control panel 39
C
To operate the climate con-
trol system
128 Function Page
D
Ignition lock 147
Start/Stop button 147
E
To adjust the steering
wheel manually
101
F
To adjust the steering
wheel electrically
101
G
Cruise control lever 174
H
Parking brake 165
I
Diagnostics connection 26
J
To open the bonnet 313
K
To release the parking
brake
165
L
Light switch 11130
CockpitAt a glance

from being propelled towards the point
of impact. It can thus reduce the risk of
injury.
In accidents in which an airbag is deployed,
it provides increased protection only if the
seat belt is worn correctly. G
WARNING
If service work is not carried out correctly, the
operating safety of your vehicle may be affec-
ted. This could cause you to lose control of
your vehicle and cause an accident. More-
over, the safety systems may no longer be
able to protect you or others as they are
designed to do.
Always have service work carried out at a
qualified specialist workshop. G
WARNING
Modifications to or work performed incor-
rectly on the following parts can result in the
restraint systems not functioning as intended:
R the restraint system, consisting of seat
belts and their anchorage points, belt ten-
sioners, belt force limiters and airbags
R the wiring
R networked electronic systems
Airbags and belt tensioners could fail to
deploy or be triggered in an accident despite
the deceleration force being sufficient to trig-
ger the systems, or could be triggered unin-
tentionally. For this reason, never make any
modifications to the restraint systems.
Therefore, you must not tamper with elec-
tronic components or their software. SRS (Supplemental Restraint System)
Introduction SRS consists of:
R
the 6 SRS warning lamp
R airbags
R airbag control unit (with crash sensors) R
belt tensioners
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
forces to which occupants are subjected dur-
ing 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
6 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. G
WARNING
If SRS is malfunctioning, individual systems
may be triggered unintentionally or might not
be triggered in the event of an accident with
a high rate of vehicle deceleration.
A malfunction has occurred if:
R the 6 SRS warning lamp does not light
up when the ignition is switched on.
R the engine is running and the 6SRS
warning lamp does not go out after a few
seconds.
R the engine is running and the 6SRS
warning lamp lights up again.
In this case, have SRS checked immediately
at a qualified specialist workshop.
Triggering of belt tensioners, belt force
limiters and airbags During the first stage of a collision, the airbag
control unit evaluates important physical
data relating to vehicle deceleration or accel-
eration, such as:
R
duration
R direction
R magnitude Occupant safety
43Safety Z