ECU MERCEDES-BENZ M-Class 2013 W166 Owner's Manual

Snow chains
.................................. 401
Symmetrical low bea m.................. 120
Tire ruts ......................................... 189
Towing atrailer .............................. 253
Traveling uphill ............................... 190
Wet road surface ........................... 183
DSR (Downhill Spee dRegulation)
Display message ............................ 305
Function/notes ............................. 246
DVD audio
Operating (on-board computer) .....270
DVD video
Operating (on-board computer) .....270 E
EASY-ENTRY feature Activating/deactivating .................277
Function/notes ............................. 112
EASY-EXIT feature
Crash-responsive ........................... 113
Function/notes ............................. 112
Switching on/off ........................... 277
EASY-PACK load-securing kit ...........340
EBD (electronic brake force
distribution)
Display message ............................ 285
Function/notes ................................ 73
ECO start/stop function
Automatic engine start ..................162
Automatic engine switch-off ..........162
Deactivating/activating .................163
General information .......................161
Important safety notes ..................161
Electronic Stability Program
see ESP ®
(Electroni cStability Program)
Emergenc yrelease
Driver's door .................................... 86
Vehicle ............................................. 86
Emergency spare wheel
Important safety notes ..................436
Points to remember .......................437
Removing ....................................... 437
Storage location ............................ 437
Technical data ............................... 439
Emergency Tensioning Devices
Function .......................................... .59
Safety guideline s............................. 43Emergency unlocking
Tailgate ............................................ 91
Emissions control
Service and warranty information ....24
Engine
Check Engine warning lamp ........... 325
Display message ............................ 299
ECO start/stop function ................161
Engine number ............................... 444
Irregularr unning............................ 164
Jump-starting ................................. 389
Starting problems ..........................164
Starting the engine with the
SmartKey ....................................... 159
Starting with KEYLESS-GO .............160
Switching off .................................. 180
Tow-starting (vehicle) ..................... 394
Engine electronics
Problem (malfunction) ...................164
Engine oil
Adding ........................................... 366
Additives ........................................ 450
Checking the oil level ..................... 365
Checking the oil level using the
dipstick .......................................... 366
Display message ............................ 300
Filling capacity ............................... 450
Notes about oil grades ................... 449
Notes on oil level/consumption ....365
Temperature (on-board computer) .278
Viscosity ........................................ 450
ESP ®
(Electronic Stability
Program) AMG menu (on-board computer) ...279
Deactivating/activating ...................71
Display message ............................ 283
ETS/4ETS ........................................ 70
Function/notes ................................ 70
Important safety information ...........71
Trailer stabilization ........................... 72
Warning lamp ................................. 321
ETS/4ETS (Electronic Traction
System) ................................................ 70
Exhaus tcheck ................................... 182
Exhaus tpipe (cleaning
instructions) ...................................... 37410
Index

Level control (vehicles with
AIRMATIC package)
Basic settings ................................ 211
Function/notes ............................. 210
Important safety notes ..................210
Level control (vehicles with the
ON&OFFROAD package)
Basi csettings ................................ 205
Function/notes ............................. 204
Important safety notes ..................204
License plate lamp (display
message) ............................................ 297
Light function ,active
Display message ............................ 298
Lights
Activating/deactivating the
interio rlighting delayed switch-off .276
Active light function .......................125
Automatic headlamp mode ............120
Cornering light function .................125
Driving abroad ............................... 120
Hazard warning lamps ...................124
High beam flasher .......................... 124
High-beam headlamps ...................124
Ligh tswitc h................................... 120
Low-beam headlamps ....................121
Parking lamps ................................ 122
Rea rfog lamp ................................ 122
Setting the brightness of the
ambient lighting (on-board
computer) ...................................... 275
Setting the color of the ambient
lighting (on-board computer) .........275
Standing lamps .............................. 123
Switching Adaptive Highbeam
Assist on/off ................................. 275
Switching the daytime running
lamps on/off (on-board
computer) ...................................... 274
Switching the exterio rlighting
delayed switch-off on/off (on-
board computer )............................ 275
Switching the surround lighting
on/off (on-board computer) ..........275
Turn signals ................................... 123
see Changing bulbs
see Interior lighting
see Lights Light sensor (display message)
.......298
Loading guidelines ............................332
Locking see Centra llocking
Locking (doors)
Automatic ........................................ 86
Emergency locking ........................... 87
From inside (central locking
button) ............................................. 85
Locking centrally
see Centra llocking
Locking verification signal (on-
board computer) ............................... 276
Low-beam headlamps Changing bulbs .............................. 130
Display message ............................ 295
Setting for driving abroad
(symmetrical) ................................. 120
Switching on/off ........................... 121
LOW RANGE
Display message ............................ 304
Off-road gea r................................. 250
LOW RANGE off-road gear ................250
Luggage holde r(EASY-PACK load-
securing kit) ...................................... .341
Lumbar support Adjusting (on the seat) ..................107
Luxury head restraints .....................105 M
M+S tires ............................................ 400
Maintenance see ASSYST PLUS
Malfunction message
see Display messages
Matte finish (cleaning
instructions) ...................................... 372
mbrace Call priority .................................... 354
Display message ............................ 289
Downloading destinations
(COMAND) ..................................... 354
Downloading route s....................... 358
Emergency call .............................. 351
Geo fencing ................................... 358
Important safety notes ..................350
Locating astolen vehicl e............... 357 Index
13

MB info call button
........................353
Remote vehicle locking ..................356
Roadside Assistance button ..........353
Search &Send ............................... 355
Self-test ......................................... 351
Speed alert .................................... 358
System .......................................... 351
Triggering the vehicle alarm ........... 359
Vehicle remote malfunction
diagnosi s....................................... 357
Vehicle remote unlocking ..............356
Mechanical key
Function/notes ................................ 80
Locking vehicle ................................ 87
Unlocking the driver's door ..............86
Memory card (audio) .........................270
Memory function ............................... 116
Message memory (on-board
computer) .......................................... 282
Messages see Display messages
Mirrors
see Exterior mirrors
see Rear-view mirror
see Vanity mirror (in the sun visor)
Mobile phone
Menu (on-board computer) ............270
Modifying the programming
(SmartKey) ........................................... 80
MOExtende dtires .............................. 382
Mounting wheels Lowerin gthe vehicle ...................... 426
Mounting anew wheel ................... 425
Raising the vehicle .........................423
Removing awheel .......................... 425
Securing the vehicle against
rolling away ................................... 422
MP3
Operation ....................................... 270
see separate operating instructions
Multifunction display
Function/notes ............................. 265
Permanent displa y......................... 274
Multifunction steering wheel
Operating the on-board computer .264
Overview .......................................... 35 N
Navigation Menu (on-board computer) ............268
see separate operating instructions
Night View Assist Plus
Activating/deactivating .................231
Cleaning ......................................... 375
Problem (malfunction) ...................233
Notes on breaking-in anew
vehicle ................................................ 156 O
Occupant Classification System
(OCS) Faults ............................................... 53
Operation ........................................ .48
System self-test ............................... 51
Occupant safety
Childre ninthe vehicle ..................... 60
Important safety notes ....................42
OCS
Faults ............................................... 53
Operation ........................................ .48
System self-test ............................... 51
Odometer
see Trip odometer
Off-road driving
Checklist after driving off-roa d...... 188
Checklist before driving off-road .... 188
General information .......................187
Important safety notes ..................187
Traveling uphill ............................... 190
Off-road program (vehicles
without the ON&OFFROAD
package)
Function/notes ............................. 248
Off-road programs (vehicles with
the ON&OFFROAD package)
Displays in the COMAND displa y... 252
Function/notes ............................. 248
Off-road program 1........................ 249
Off-road program 2........................ 249
Off-road system
4MATIC .......................................... 246
DSR ............................................... 246
LOW RANGE off-road gear .............250 14
Index

Route guidance (navigation)
............268 S
Safety Childre ninthe vehicle ..................... 60
Child restraint systems ....................60
Occupant Classification System
(OCS) ............................................... 48
Safety system
see Driving safety systems
Seat belts
Adjusting the driver's and front-
passenger sea tbelt ......................... 57
Adjusting the height ......................... 57
Belt force limiters ............................ 59
Cleaning ......................................... 377
Correct usage .................................. 55
Emergency Tensioning Devices ....... .59
Fastening ......................................... 56
Important safety guidelines .............54
Releasing ......................................... 58
Safety guidelines ............................. 43
Switching belt adjustment on/off
(on-board computer) ......................277
Warning lamp ................................. 317
Warning lamp (function) ................... 58
see Seat belts
Seats
Adjusting (electrically). ..................104
Adjusting the head restraint ..........104
Cleaning the cover .........................376
Correct driver's sea tposition ........102
Folding the rear bench seat
forwards/back ............................... 335
Important safety notes ..................103
Overview ........................................ 103
Seat heating problem ....................109
Seat ventilation problem ................110
Storing settings (memory
function) ........................................ 116
Switching sea theating on/off .......107
Switching seat ventilation on/off ..109
Securing hooks .................................. 338
Selector lever Cleaning ......................................... 376
Sensors (cleaning instructions) .......373
Service menu (on-board computer) .273 Service products
Brake fluid ..................................... 450
Coolant (engine) ............................ 451
DEF special additive s..................... 448
Engine oil ....................................... 449
Fuel ................................................ 445
Important safety notes ..................444
Washer fluid .................................. .452
Settings
Factory (on-board computer) .........278
On-board computer .......................274
Setting the air distribution ...............147
Setting the airflow ............................147
SETUP (on-board computer) .............279
Side impact air bag .............................47
Side marker lamp (display
message) ............................................ 297
Side marker lamps (changing
bulbs) ................................................. 131
Side windows Cleaning ......................................... 372
Convenience closing feature ............93
Convenience opening feature ..........93
Important safety information ...........92
Opening/closing .............................. 92
Overview .......................................... 92
Problem (malfunction) .....................96
Resetting ......................................... 94
Sliding sunroof
Important safety notes ....................96
Opening/closing .............................. 97
Problem (malfunction) ...................100
Resetting ......................................... 98
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery .......................81
Changing the programming .............80
Checking the battery .......................81
Convenience closing feature ............94
Convenience opening feature ..........93
Display message ............................ 314
Door central locking/unlocking .......79
Important safety notes ....................78
Loss ................................................. 83
Mechanical key ................................ 80
Overview .......................................... 78
Positions (ignition lock) .................157 Index
17

Opening/closing (from outside)
.......88
Opening dimensions ......................452
Power closing .................................. 86
Tail lamps
Display message ............................ 296
Tank content
Fuel gauge ............................... 33, 263
Technical data
Capacities ...................................... 444
Emergency spare wheel .................439
Information .................................... 442
Tires/wheels ................................. 426
Trailer loads ................................... 455
Vehicle data ................................... 452
TELEAID
Call priority .................................... 354
Downloading destinations
(COMAND) ..................................... 354
Downloading route s....................... 358
Emergency call .............................. 351
Geo fencing ................................... 358
Important safety notes ..................350
Locating astolen vehicl e............... 357
MB info call button ........................353
Remote vehicle locking ..................356
Roadside Assistance button ..........353
Search &Send ............................... 355
Self-test ......................................... 351
Speed alert .................................... 358
System .......................................... 351
Triggering the vehicle alarm ........... 359
Vehicle remote malfunction
diagnosi s....................................... 357
Vehicle remote unlocking ..............356
Telephone
Accepting acall............................. 271
Display message ............................ 314
Menu (on-board computer) ............270
Number from the phone book ....... .271
Redialing ........................................ 271
Rejecting/ending acall................. 271
Telescopic rod (EASY-PACK load-
securing kit) ....................................... 341
Temperature Coolant .......................................... 263
Coolant (on-board computer) ......... 278
Engine oil (on-board computer) ...... 278 Outside temperature .....................
.264
Setting (climate control) ................146
Theft deterrent systems
ATA (Anti-Theft Alarm system) .........75
Immobilize r...................................... 75
Through-loading ................................ 335
Time see Separate Operator's Manual
Timing (RACETIMER) .........................279
TIREFIT kit .......................................... 383
Tire pressure Calling up (on-board computer) .....406
Checking manually ........................405
Display message ............................ 310
Maximum ....................................... 404
Notes ............................................. 403
Not reached (TIREFIT) ....................384
Reached (TIREFIT) ..........................384
Recommended ............................... 402
see Tire pressure
Tire pressure loss warning system
Important safety notes ..................405
Restarting ...................................... 406
Tire pressure monitoring system
Checking the tire pressure
electronically ................................. 408
Function/notes ............................. 406
Restarting ...................................... 409
Warning lamp ................................. 329
Warning message .......................... 409
Tires
Aspect ratio (definition) .................420
Average weight of the vehicle
occupants (definition) ....................419
Bar (definition) ............................... 418
Changing awheel .......................... 421
Characteristics .............................. 418
Checking ........................................ 399
Definition of terms .........................418
Directio nofrotation ...................... 422
Display message ............................ 310
Distributio nofthe vehicle
occupants (definition) ....................421
DOT, Tire Identification Number
(TIN) .............................................. .418
DOT (Department of
Transportation) (definition) ............419 Index
19

Trailer towing
Active Blind Spo tAssist ................. 240
Active Lane Keeping Assist ............243
Blind Spot Assist ............................ 235
PARKTRONI C................................. 216
Permissible trailer loads and
drawba rnoseweights ..................... 259
Transfer case ..................................... 173
Transmission see Automatic transmission
Transmission position display .........165
Transmission position display
(DIRECT SELECTl ever)...................... 165
Transporting the vehicle ..................393
Traveling uphill Brow of hill ..................................... 191
Driving downhill ............................. 191
Maximum gradient-climbing
capability ....................................... 191
Trim pieces (cleaning instructions) .376
Trip computer (on-board
computer) .......................................... 267
Trip odometer Calling up ....................................... 266
Resetting (on-board computer) ......268
see Trip odometer
Trunk
see Tailgate
Turn signals
Display message ............................ 295
Switching on/off ........................... 123
see Turn signals
TWR (Tongue Weight Rating)
(definition) ......................................... 421
Type identification plate see Vehicle identification plate U
Unlocking Emergency unlocking .......................86
From inside the vehicle (central
unlocking button) ............................. 85 V
Vanity mirror (in the sun visor) ........345
Vehicle Correct use ...................................... 27
Data acquisition ............................... 28
Display message ............................ 312
Equipment ....................................... 24
Individua lsettings .......................... 274
Limited Warranty ............................. 28
Loading .......................................... 410
Locking (in an emergency) ...............87
Locking (SmartKey) .......................... 79
Lowering ........................................ 426
Maintenance .................................... 25
Parking for a long period ................ 182
Pulling away ................................... 160
Raising ........................................... 423
Reporting problems .........................28
Securing from rolling away ............422
Towing away .................................. 391
Transporting .................................. 393
Unlocking (in an emergency) ...........86
Unlocking (SmartKey) ......................79
Vehicle data ................................... 452
Vehicle battery
see Battery (vehicle)
Vehicle data ....................................... 452
Vehicle dimensions ...........................452
Vehicle emergency locking ................87
Vehicle identification number see VIN
Vehicle identification plate ..............443
Vehicle level (display message) .......302
Vehicle tool kit .................................. 380
Video Operating the DVD ......................... 270
VIN ...................................................... 443 W
Warning and indicator lamps ABS ................................................ 319
Brakes ........................................... 318
Check Engine ................................. 325
Coolant .......................................... 326
Distance warning ........................... 328
DISTRONI CPLUS ........................... 328 Index
21

This information helps, for example, to test
vehicle systems after an accident and to
continually improve vehicle safety.
Daimler AG can access this data and submit
it:
R for safety research or vehicle diagnosis
purposes
R with the consent of the vehicle owner
R on the instruction of prosecuting
authorities
R for use in arbitration of disputes that
involve Daimler AG, its affiliates or its sales
and service organizations
R as otherwise required or permitted by law.
Please check your mbrace (Canada: TELE
AID) purchase agreement to find out more
about data that can be recorded and
transmitted by this system. Information on copyright
General information
You can find information on licenses for free
and open-source software used in your
vehicle and its electronic components on the
following website:
http://www.mercedes-benz.com/
opensource Introduction
29 Z

child in a standard child restraint or if the front
passenger sea
tis classified as being empty.
When the OCS senses that the front
passenger seat occupant is classified as
being up to or less than the weight of a typical
12-month-old child in a standard child
restraint, the 001A001Cindicator lamp will
illuminate when the engine is started and
remain illuminated. This indicates that the
front passenger front air bag is deactivated.
When the OCS senses that the front
passenger seat is classified as being empty,
the 001A001C indicator lamp will illuminate
when the engine is started and remain
illuminated. This indicates that the front
passenger front air bag is deactivated.
When the OCS senses that the front
passenger seat occupant is classified as
being heavier than the weight of a typical 12-
month-old child seated in astandard child
restraint or as being a small individual (such
as a young teenager or asmall adult), the
001A001C indicator lamp will illuminate for
approximately 6seconds when the engine is
started. Depending on occupant weight
sensor readings from the seat, it will then
remain illuminated or go out. With the
001A001C indicator lamp illuminated, the
fron tpassenger fron tair bag is deactivated.
With the 001A001C indicator lamp out, the
front passenger front air bag is activated.
When the OCS senses that the front
passenger seat occupant is classified as an
adult or someone larger than a small
individual, the 001A001Cindicator lamp will
illuminate for approximately six seconds
when the engine is started and the ngo out.
This indicates that the front passenger front
air bag is activated.
If the 001A001C indicator lamp is illuminated,
the front passenger front air bag is
deactivated and will not be deployed. If the
001A001C indicator lamp is not
illuminated, the front passenger front air bag
is activated and will be deployed
R in the event of certain frontal impacts
R if the impact exceeds a predetermined
triggering threshold
R independent of the side impact air bag or
pelvis air bag
If the front passenger front air bag is
deployed, the rate of inflation will be
influenced by
R the rate of vehicle deceleration as assessed
by the air bag control unit
R the front passenger's weight category as
identified by the OCS G
WARNING
According to accident statistics, children are
safer when properly restrained on the rear
seats than on the front-passenger seat. Thus,
we strongly recommend that children be
placed in the rear seats whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriate infant
restraint, toddler restraint, or booster seat
recommended for the size and weight of the
child.
The infant or child restraint must be properly
secured with the vehicle's seat belt, the seat
belt and Top Tether strap, or lower anchors
and Top Tether strap, fully in accordance with
the child seat manufacturer's instructions.
Occupants, especially children, should always
sit as upright as possible, wear the seat belt
properly and use an appropriately sized infant
restraint, toddler restraint, or booster seat
recommended for the size and weight of the
child. Occupant safety
49Safety
Z

Children can be killed or seriously injured by
an inflating air bag. Note the following
important information when circumstances
require you to place a child in the front-
passenger seat:
R Your vehicle is equipped with air bag
technology designed to deactivate the
front-passenger fron tair bag in your vehicle
when the system senses the weight of a
typical 12-month-old child or less along
with the weight of a standard appropriate
child restraint on the front-passenge rseat.
R Ac hild in a rear-facing child restraint on the
front-passenger seat will be seriously
injured or even killed if the front-passenger
front air bag inflates in a collision which
could occur under some circumstances,
even with the air bag technology installed
in your vehicle. The only means to eliminate
this risk completely is never to place a child
in a rear-facing child restraint in the front-
passenger seat. We therefore strongly
recommend that you always place a child
in a rear-facing child restraint on the rear
seat.
R If you install a rear-facing child restraint on
the front-passenger seat, make sure the
001A001C indicator lamp is illuminated,
indicating that the front-passenger front air
bag is deactivated. Should the 001A001C
indicator lamp not illuminate or go out while
the restraint is installed, please check
installation. Periodically check the
001A001C indicator lamp while driving to
make sure that the 001A001Cindicator
lamp is illuminated. If the 001A001C
indicator lamp goes out or remains out, do
not transport a child on the front-passenger
seat until the system has been repaired.
Ac hild in a rear-facing child restraint on the
front-passenger seat will be seriously
injured or even killed if the front-passenger
front air bag inflates. R
If you place a child in a forward-facing child
restraint on the front-passenger seat:
-move the seat as far back as possible
- use the proper child restraint
recommended for the age, size and
weight of the child
- secure child restraint with the vehicle's
seat belt according to the child seat
manufacturer's instructions
R For children larger than the typical 12-
month-old child, the front-passenger front
air bag may or may not be activated. G
WARNING
If the red 001FSRS warning lamp in the
instrument cluster and the 001A001C
indicator lamp light up simultaneously, the
OCS is malfunctioning. The front passenger
front air bag will be deactivated in this case.
Have the system checked by qualified
technicians as soon as possible. Contact an
authorized Mercedes-Ben zCenter.
Only have the seat repaired or replaced at an
authorized Mercedes-Benz Center.
In order to ensure proper operation of the air
bag system and OCS:
R Sit with the seat belt properly fastened in a
position that is as upright as possible with
your back against the seat backrest.
R When seated, a passenger should not
position him/herself in such a way as to
cause the passenger's weight to be lifted
from the seat cushion as this may result in
the OCS being unable to correctly
approximate the passenger's weight
category.
R Read and observe all warnings in this
chapter. 50
Occupant safetySafety

In a frontal crash, yourb
ody would move
too far forward. That would increase the
chance of head and neck injuries. The seat
belt would also apply too much force to the
ribs or abdomen, which could severely
injure internal organs such as your liver or
spleen.
Adjust the seat belt so that the shoulder
section is located as close as possible to
the middle of the shoulder. It should not
touch the neck.N ever pass the shoulder
portion of the seat belt under your arm. For
this purpose, you can adjust the height of
the seat belt outlet.
R Position the lap belt as low as possible on
your hips and not across the abdomen. If
the lap belt is positioned across your
abdomen, it could cause serious injuries in
a crash.
R Never wear seat belts over rigid or
breakable objects in or on your clothing,
such as eyeglasses, pens, keys etc., as
these might cause injuries.
R Make sure the seat belt is always fitted
snugly. Take special care of this when
wearing loose clothing.
R Never use a seat belt for more than one
person at a time. Do not fasten a seat belt
around a person and another person or
other objects at the same time.
R Seat belts should not be worn twisted. In a
crash, you would not have the full width of
the seat belt to distribut eimpact forces.
The twisted seat belt against yourb ody
could cause injuries.
R Pregnant women should also always use a
lap-shoulder belt. The lap belt portion
should be positioned as low as possible on
the hips to avoid any possible pressure on
the abdomen.
R Place the seat backrest in a position that is
as upright as possible.
R Check your seat belt during travel to make
sure it is properly positioned. 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 When using a seat belt to secure infant
restraints, toddler restraints, or children in
booster seats, always follow the child seat
manufacturer's instructions. G
WARNING
Do not pass seat belts over sharp edges. They
could tear.
Do not allow the seat belt to get caught in the
door or in the seat adjustment mechanism.
This could damage the seat belt.
Never attempt to make modifications to seat
belts. This could impair the effectiveness of
the seat belts.
Fastening seat belts G
WARNING
According to accident statistics, children are
safer when properly restrained on the rear
seats than on the front-passenger seat. Thus,
we strongly recommend that children be
placed in the rear seat whenever possible.
Regardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriately sized
child restraint system or booster seat
recommended for the size and weight of the
child. For additional information, see the
"Children in the vehicle" section.
Ac hild's risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and/
or the child is not properly secured in the child
restraint. 56
Occupant safetySafety