interior MERCEDES-BENZ M-Class 2015 W166 Owner's Manual

BAS PLUS (Brake Assist System
PLUS)
.................................................... 69
Battery (SmartKey) Checking .......................................... 83
Important safety notes .................... 83
Replacing ......................................... 83
Battery (vehicle)
Charging ........................................ 389
Display message ............................ 301
Important safety notes .................. 387
Jump starting ................................. 391
Overview ........................................ 387
Belt
see Seat belts
Blind Spot Assist
Activating/deactivating ................. 276
Display message ............................ 308
Notes/function .............................. 237
Trailer towing ................................. 239
see Active Blind Spot Assist
BlueTEC
Adding DEF .................................... 180
BlueTEC (DEF) .................................... 451
Brake Assist see BAS (Brake Assist System)
Brake fluid
Display message ............................ 291
Notes ............................................. 453
Brake lamps
Changing bulb s.............................. 132
Display message ............................ 298
Brakes
ABS .................................................. 68
Adaptive Brake Assist ...................... 71
BAS .................................................. 68
BAS PLUS ........................................ 69
Brake fluid (notes) ......................... 453
Display message ............................ 285
High-performance brake system .... 189
Important safety notes .................. 188
Maintenance .................................. 189
Parking brake ................................ 184
Riding tips ...................................... 188
Warning lamp ................................. 320
Breakdown
see Flat tire
see Towing away Brightness control (instrument
cluster lighting)
................................... 35
Bulbs see Replacing bulbs C
California Important notice for retail cus-
tomers and lessees .......................... 26
Calling up a malfunction
see Display messages
Car
see Vehicle
Care
360° camera ................................. 376
Carpets .......................................... 379
Car wash ........................................ 372
Displa y........................................... 377
Exhaust pipe .................................. 376
Exterior lights ................................ 375
Gear or selector lever .................... 378
Interior ........................................... 377
Matte finish ................................... 374
Night View Assist Plus ................... 377
Notes ............................................. 371
Paint .............................................. 373
Plastic trim .................................... 378
Power washe r................................ 373
Rear view camera .......................... 376
Roof lining ...................................... 379
Seat belt ........................................ 379
Seat cover ..................................... 378
Sensors ......................................... 375
Steering wheel ............................... 378
Trim pieces .................................... 378
Washing by hand ........................... 373
Wheels ........................................... 374
Windows ........................................ 375
Wiper blades .................................. 375
Wooden trim .................................. 378
Cargo compartment cover
Notes/how to use ......................... 340
Cargo compartment enlargement
Important safety notes .................. 337
Cargo compartment floor
Opening/closing ............................ 344
Stowage well (under )..................... 344 6
Index

Combination switch
.......................... 123
Combined cargo cover and net ........ 341
Consumption statistics (on-board
computer) .......................................... 269
Convenience closing feature .............. 95
Convenience opening feature ............ 95
Coolant (engine) Checking the level ........................ .369
Display message ............................ 300
Filling capacity ............................... 454
Important safety notes .................. 453
Temperature (on-board com-
puter) ............................................. 281
Temperature gauge ........................ 266
Warning lamp ................................. 328
Cooling
see Climate control
Copyright ............................................. 31
Cornering light function Display message ............................ 297
Function/notes ............................ .125
Crash-responsive emergency light-
ing ....................................................... 129
Cruise control Activating ....................................... 196
Activation conditions ..................... 196
Cruise control lever ....................... 196
Deactivating ................................... 197
Display message ............................ 311
Driving system ............................... 195
Function/notes ............................ .195
Important safety notes .................. 196
Storing and maintaining current
speed ............................................. 196
Cup holder
Center console .............................. 346
Important safety notes .................. 345
Rear compartment ......................... 346
Temperature controlled ................. 346
Customer Assistance Center
(CAC) ..................................................... 29
Customer Relations Department ....... 29 D
Dashboard see Instrument cluster
Data
see Technical data
Daytime running lamps
Display message ............................ 299
Function/notes ............................ .120
Switching on/off (on-board com-
puter) ............................................. 277
Declarations of conformity ................. 28
DEF Adding .......................................... .180
Display message ............................ 303
Filling capacity ............................... 452
Important safety notes .................. 451
Delayed switch-off
Exterior lighting (on-board com-
puter) ............................................. 278
Interior lighting .............................. 279
Diagnostics connection ......................28
Diesel .................................................. 449
Differential lock (display mes-
sage) .................................................. .306
Digital speedometer ......................... 270
DIRECT SELECT lever Automatic transmission ................. 168
Display messages
ASSYST PLUS ................................ 370
Calling up (on-board computer) ..... 284
Driving systems ............................ .304
Engine ............................................ 300
General notes ................................ 284
Hiding (on-board computer) ........... 284
KEYLESS-GO .................................. 317
Lights ............................................. 297
Safety systems .............................. 285
SmartKey ....................................... 317
Tires ............................................... 312
Vehicle .......................................... .315
Distance recorder
see Odometer
see Trip odometer
Distance warning (warning lamp) .... 3308
Index

Refuelin
g ........................................ 177
Tank content/reserv e fuel .............448
Fuel filler flap
Opening ......................................... 179
Fuel filter (display message) ............ 303
Fuel level Calling up the range (on-board
computer) ...................................... 270
Fuel tank
Capacity ........................................ 448
Problem (malfunction) ................... 180
Fuses
Allocation chart ............................ .396
Before changing ............................ .396
Dashboard fuse box ....................... 397
Fuse box in the engine compart-
ment .............................................. 397
Fuse box under rear bench sea t.... 398
Important safety notes .................. 396 G
Garage door opener Clearing the memory ..................... 363
General notes ................................ 360
Important safety notes .................. 361
Opening/closing the garage doo r..3 63
Programming (button in the rear-
view mirror) ................................... 361
Gear indicator (on-board com-
puter) ................................................. .281
Genuine parts ...................................... 24
Glove box .......................................... .335
GTW (Gross Trailer Weight) (defini-
tion) .................................................... 421 H
Handbrake see Parking brake
Hazard warning lamps ......................124
Headlamps Cleaning system (function) ............ 125
Fogging up ..................................... 127
see Automatic headlamp mode
Head restraints
Adjusting ....................................... 106
Adjusting (electrically) ................... 107 Adjusting (manually) .....................
.107
Adjusting (rear) .............................. 108
Installing/removing (rear) .............. 108
Luxury ............................................ 107
Heating
see Climate control
High-beam headlamps
Adaptive Highbeam Assist ............. 126
Changing bulbs .............................. 131
Display message ............................ 298
Switching on/off ........................... 124
Hill start assist .................................. 161
HOLD function Deactivating ................................... 211
Display message ............................ 307
Function/notes ............................ .210
Hood
Closing .......................................... .367
Display message ............................ 316
Important safety notes .................. 366
Opening ......................................... 366
Horn ...................................................... 34
Hydroplaning ..................................... 190 I
Ignition lock see Key positions
Immobilizer .......................................... 77
Indicator lamps see Warning and indicator lamps
Indicators
see Turn signals
Insect protection on the radiator .... 367
Instrument cluster Overview .......................................... 35
Warning and indicator lamps ........... 36
Instrument cluster lighting .............. 266
Interior lighting Automatic control .......................... 128
Delayed switch-off (on-board
computer) ...................................... 279
Emergency lighting ........................ 129
Manual control ............................... 128
Overview ........................................ 127
Reading lamp ................................. 127 12
Index

Setting the brightness of the
ambient lighting (on-board com-
puter) ............................................. 278
Setting the color of the ambient
lighting (on-board computer) ......... 278
J
Jack Storage location ............................ 382
Using ............................................. 425
Jump starting (engine) ...................... 391K
KEYLESS-GO Convenience closing feature ............ 96
Display message ............................ 317
Locking ............................................ 81
Removing the Start/Stop button ... 159
Start/Stop button .......................... 158
Starting the engine ........................ 160
Unlocking ......................................... 81
Key positions
KEYLESS-GO .................................. 158
SmartKey ....................................... 157
Kickdown
Driving tips .................................... 171
Manual drive progra m.................... 175
Knee bag .............................................. 52 L
Lamps see Warning and indicator lamps
Lane detection (automatic)
see Lane Keeping Assist
Lane Keeping Assist
Activating/deactivating ................. 276
Display message ............................ 307
Function/information .................... 239
see Active Lane Keeping Assist
Lap time (RACETIMER) ...................... 282
LATCH-type (ISOFIX) child seat
anchors ................................................ 63
Level control (display message) ...... 304Level control (vehicles with AIR-
MATIC package)
Basic settings ................................ 214
Function/note s............................. 213
Important safety notes .................. 213
Level control (vehicles with the
ON&OFFROAD package) Basic settings ................................ 207
Function/note s............................. 206
Important safety notes .................. 206
License plate lamp (display mes-
sage) ................................................... 298
Light function, active Display message ............................ 299
Lights
Activating/deactivating the inte-
rior lighting delayed switch-off ....... 279
Active light function ....................... 125
Adaptive Highbeam Assist ............. 126
Automatic headlamp mod e............ 120
Cornering light function ................. 125
Driving abroad ............................... 120
Hazard warning lamps ................... 124
High beam flashe r.......................... 124
High-beam headlamp s................... 124
Light switch ................................... 120
Low-beam headlamp s.................... 121
Parking lamps ................................ 122
Rear fog lamp ................................ 122
Setting the brightness of the
ambient lighting (on-board com-
puter) ............................................. 278
Setting the color of the ambient
lighting (on-board computer) ......... 278
Standing lamps .............................. 123
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 277
Switching the exterior lighting
delayed switch-off on/off (on-
board computer) ............................ 278
Switching the surround lighting
on/off (on-board computer) .......... 278
Turn signals ................................... 123
see Interior lighting
see Replacing bulbs
Light sensor (display message) ....... 300 Index
13

Overhead control panel
Function Page
0043
003D
Switches the left-
hand reading lamp on/off 127
0044
004A
Switches the front
interior lighting on 128
0087
0042
Switches the rear
interior lighting on/off 128
0085
0033
Switches the front
interior lighting/automatic
interior lighting control off 128
0083
003D
Switches the right-
hand reading lamp on/off 127
0084
0056
Opens/closes the
sliding sunroof 98
0057
Opens/closes the
panorama roof with power
tilt/sliding panel with roller sunblinds 99 Function Page
006B
Eyeglasses compartment 336
006C
0052
Roadside Assistance
call button (mbrace sys-
tem) 354
006D
0053
SOS button (mbrace
system) 353
006E
00D9
MB Info call button
(mbrace system) 355
006F
Rear-view mirror 114
0070
Buttons for the garage door
opener 363
0071
Microphone for mbrace
(emergency call system),
telephone and Voice Con-
trol System
1 1
Voice Control System only available in combination with COMAND. Observe the additional operating instruc-
tions. Overhead control panel
41At a glance

Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment 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 Read the information on qualified special-
ist workshops (Y page 29). Panic alarm
X
To activate: press0033button 0043for at
least one second.
An alarm sounds and the exterior lighting
flashes.
X To deactivate: press0033button 0043
again.
or
X Insert the SmartKey into the ignition lock.
or X Press the KEYLESS-GO Start/Stop button.
The KEYLESS-GO key must be in the vehi-
cle. Occupant safety
Restraint system: introduction
The restraint system reduces the risk of occu-
pants hitting parts of the vehicle interior in the
event of an accident. Furthermore, the
restraint system may also reduce the forces
exerted on the vehicle occupants when an
accident occurs.
The restraint system includes:
R Seat belt system
R Air bags
R Child restraint system
R Child seat securing system
The components of the restraint system work
in conjunction with each other. They can only
offer the intended level of protection if all
vehicle occupants:
R are correctly wearing their seat belts.
(Y page 47)
R adjust their seat and head restraint prop-
erly (Y page 105).
The driver is also responsible for ensuring
that the steering wheel has been correctly
positioned. Observe the information relating
to the correct driver's seat position
(Y page 104).
Always ensure the air bag can inflate properly if deployed (Y page 50).
An air bag supplements a correctly fastened
seat belt and is an additional safety device
providing increased protection for vehicle
occupants in appropriate accident situations.
For example, if the protection already provi-
ded by a correctly fastened seat belt will suf-
fice, the air bags are not deployed. Further-
more, only the air bags that would increase
the degree of protection afforded to the vehi- cle occupants in the event of an accident are deployed. Seat belts and air bags generally do
not protect against objects penetrating the
vehicle from the outside.
Information on the restraint system operation can be found under "Triggering of belt ten-
sioners and air bags" (Y page 58).44
Occupant safetySafety

Depending on the person in the front-
passenger seat, the front-passenger front air
bag must either be disabled or enabled; see
the following points. You must make sure of
this both before and during a journey.
R Children in a child restraint system:
whether the front-passenger front air bag is
enabled or deactivated depends on the
installed child restraint system, and the age
and size of the child. Therefore, be sure to
observe the notes on the "Occupant clas-
sification system (OCS)" (Y page 53) and
on "Children in the vehicle" (Y page 61).
There you will also find instructions on
backwards- and forwards-facing child
restraint systems on the front-passenger
seat.
R All other persons: depending on the clas-
sification of the person in the front-
passenger seat, the front-passenger front
air bag is enabled or deactivated
(Y page 53). Be sure to observe the notes
on "Seat belts“ (Y page 46) and "Air bags"
(Y page 50). There you can also find infor-
mation on the correct seat position. Seat belts
Introduction A correctly fastened seat belt is the most
effective means of restraining the movement
of vehicle occupants in the event of an acci-
dent or overturn. This reduces the risk of
vehicle occupants coming into contact with
parts of the vehicle interior or being thrown
from the vehicle. Furthermore, the seat belt
helps to keep the vehicle occupants in the
best position in relation to the air bag.
The seat belt system consists of:
R Seat belts
R Emergency Tensioning Devices for the
front seat belts and the outer seat belts in
the rear compartment
R Belt force limiters If the seat belt is pulled quickly or suddenly
from the belt sash guide, the inertia reel
locks. The belt strap cannot be pulled out fur-
ther.
Emergency Tensioning Devices tighten the
seat belts in an accident, pulling them close
against the occupant's body. They do not,
however, pull vehicle occupants back
towards the backrest.
Emergency Tensioning Devices do not cor-
rect an incorrect seat position or incorrectly
worn seat belts.
When activated, the belt force limiters reduce
the force exerted by the seat belt on the vehi-
cle occupants.
The belt force limiters for the front seats are
synchronized with the front air bags, which
absorb part of the deceleration force. This
makes it possible to reduce the forces to
which vehicle occupants are subjected during an accident.
! If the front-passenger seat is unoccupied,
do not insert the belt tongue into the buckle of the front-passenger seat. This may oth-
erwise lead to the triggering of the Emer-
gency Tensioning Device in the event of anaccident, which will then need to be
replaced.
Important safety notes The use of seat belts and child restraint sys-
tems is required by law in:
R all 50 states
R the U.S. territories
R the District of Columbia
R all Canadian provinces
Even where this is not required by law, all
vehicle occupants should correctly fasten
their seat belts before starting the journey. G
WARNING
If the seat belt is incorrectly fastened, it can-
not protect as intended. Furthermore, an
incorrectly fastened seat belt can cause addi- tional injury, for example, in an accident, dur- 46
Occupant safetySafety

R
Only secure a child in a rearward-facing
child restraint system to the front-
passenger seat when the front-passenger
front air bag is disabled. If the PASSENGER
AIR BAG OFF indicator lamp is permanently
lit, the front-passenger front air bag is dis-
abled (Y page 45).
R Always observe the instructions and safety
notes on the "Occupant Classification Sys-
tem (OCS)" (Y page 53) and on "Children
in the vehicle" (Y page 61) in addition to
the child restraint system manufacturer's
installation instructions.
Objects in the vehicle interior may pre-
vent the air bag from functioning cor-
rectly. Before starting your journey and to
avoid risks resulting from the speed of the air bag as it deploys, make sure that:
R there are no people, animals or objects
between the vehicle occupants and an air
bag.
R there are no objects between the seat, door
and B-pillar.
R no hard objects, e.g. coat hangers, hang on
the grab handles or coat hooks.
R no accessories, such as cup holders, are
attached to the vehicle within the deploy-
ment area of an air bag, e.g. to doors, side windows, rear side trim or side walls.
R no heavy, sharp-edged or fragile objects
are in the pockets of your clothing. Store
such objects in a suitable place. G
WARNING
If you modify the air bag cover or affix objects
such as stickers to it, the air bag can no longer function correctly. There is an increased risk
of injury.
Never modify an air bag cover or affix objectsto it. G
WARNING
Sensors to control the air bags are located in the doors. Modifications or work not per-
formed correctly to the doors or door panel-
ing, as well as damaged doors, can lead to the function of the sensors being impaired. The air
bags might therefore not function properly
any more. Consequently, the air bags cannot
protect vehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door pan-
eling carried out at a qualified specialist work- shop.
Front air bags Driver's air bag
0043inflates in front of the
steering wheel; front-passenger air bag 0044
inflates in front of and above the glove box.
When deployed, the front air bags offer addi-
tional head and thorax protection on the front
seats.
The PASSENGER AIR BAG OFF indicator lamp shows you the status of the front-passenger
front air bag (Y page 45).
Front-passenger air bag 0044is only deployed
if:
R the Occupant Classification System (OCS)
recognizes that the front-passenger seat is
occupied (Y page 53)
R the PASSENGER AIR BAG OFF indicator
lamp is not lit (Y page 53)
R the restraint system control unit predicts a
high accident severity Occupant safety
51Safety Z

ton once or twice on vehicles with KEY-
LESS-GO.
The system carries out a self-diagnosis.
The PASSENGER AIR BAG OFF indicator lamp
must light up for approximately six second s.
The PA SSENGER AIR BAG OFF indicator lamp
then displays the status of the front-
passenger front air bag. If the status of the
front-passenger front air bag changes while
the vehicle is in motion, an air bag display
message may appear in the instrument clus-
ter (Y page 295). When the front-passenger
seat is occupied, always pay attention to the
PASSENGER AIR BAG OFF indicator lamp. Be aware of the status of the front-passenger
front air bag both before and during the jour-ney.
If the PASSENGER AIR BAG OFF indicator
lamp:
R is lit, the front-passenger front air bag is
deactivated. They will then not be deployed in the event of an accident.
R does not light up: the front-passenger
front air bag is enabled. If, in the event of an
accident, all deployment criteria are met,
the front-passenger front air bag is
deployed. G
WARNING
If the PASSENGER AIR BAG OFF indicator
lamp is lit, the front-passenger front air bag is disabled. It will not be deployed in the event of
an accident and cannot perform its intended
protective function. A person in the front-
passenger seat could then, for example, come
into contact with the vehicle's interior, espe-
cially if the person is sitting too close to the
dashboard. This poses an increased risk of
injury or even fatal injury.
When the front-passenger seat is occupied,
always ensure that:
R the classification of the person in the front-
passenger seat is correct and the front-
passenger front air bag is enabled or disa- bled in accordance with the person in the
front-passenger seat
R the front-passenger seat has been moved
back as far back as possible.
R the person is seated correctly.
Make sure, both before and during the jour-
ney, that the status of the front-passenger
front air bag is correct. G
WARNING
If you secure a child in a child restraint system on the front-passenger seat and the
PASSENGER AIR BAG OFF indicator lamp is
off, the front-passenger front air bag can
deploy in the event of an accident. The child
could be struck by the air bag. This poses an
increased risk of injury or even fatal injury.
Make sure that the front-passenger front air
bag has been disabled. The PASSENGER AIR
BAG OFF indicator lamp must be lit. G
WARNING
If you secure a child in a forward-facing child
restraint system on the front-passenger seat
and you position the front-passenger seat too close to the dashboard, the child could, in the
event of an accident:
R come into contact with the vehicle's inte-
rior if the PASSENGER AIR BAG OFF indi-
cator lamp is lit, for example
R be struck by the air bag if the PASSENGER
AIR BAG OFF indicator lamp is off
This poses an increased risk of injury or even
fatal injury.
Move the front-passenger seat as far back as possible. Always make sure that the shoulder
belt strap is correctly routed from the vehicle
belt sash guide to the shoulder belt guide on
the child restraint system. The shoulder belt
strap must be routed forwards and down-
wards from the vehicle belt sash guide. If nec- essary, adjust the vehicle belt sash guide and
the front-passenger seat accordingly. Always
observe the child restraint system manufac-
turer's installation instructions. 54
Occupant safetySafety

G
DANGER
If the PASSENGER AIR BAG OFF indicator
lamp remains lit after the system self-test, the front-passenger front air bag is disabled. It willnot be deployed in the event of an accident. In
this case, the front-passenger front air bag
cannot perform its intended protective func-
tion, e.g. when a person is seated in the front- passenger seat.
That person could, for example, come into
contact with the vehicle's interior, especially
if the person is sitting too close to the dash-
board. This poses an increased risk of injury or even fatal injury.
When the front-passenger seat is occupied,
always ensure that:
R the classification of the person in the front-
passenger seat is correct and the front-
passenger front air bag is enabled or disa-
bled in accordance with the person in the
front-passenger seat
R the person is seated properly with a cor-
rectly fastened seatbelt
R the front-passenger seat has been moved
back as far back as possible
If the PASSENGER AIR BAG OFF indicator
lamp remains lit when it should not, the front- passenger seat may not be used. Do not
install a child restraint system on the front-
passenger seat. Have the Occupant Classifi-
cation System (OCS) checked and repaired
immediately at a qualified specialist work-
shop. G
WARNING
Objects between the seat surface and the
child restraint system could affect OCS oper- ation. This could result in the front-passengerair bag not functioning as intended during an
accident. This poses an increased risk of
injury or even fatal injury.
Do not place any objects between the seat
surface and the child restraint system. The
entire base of the child restraint system must
always rest on the seat cushion of the front-
passenger seat. The backrest of the forwards- facing child restraint system must, as far as
possible, be resting on the backrest of the
front-passenger seat. Always comply with the child restraint system manufacturer's instal-
lation instructions.
After the system self-test, the PASSENGER
AIR BAG OFF indicator lamp displays the sta-
tus of the front-passenger front air bag
(Y page 53).
For more information about the OCS, see
"Problems with the Occupant Classification
System" (Y page 57). 56
Occupant safetySafety