1, 2, 3 ...
115 V socket ...................................... 285
12 V socket see Sockets
360° camera
Function/notes ............................. 197A
ABS (Anti-lock Braking System) Display message ............................ 236
Function/notes ................................ 67
Important safety notes ....................67
Warning lamp ................................. 263
Activating/deactivating cooling
with air dehumidification .................133
Active Blind Spot Assist Activating/deactivating (on-
board computer) ............................ 229
Display message ............................ 253
Function/informatio n.................... 206
Trailer towing ................................. 209
Active Driving Assistance package .206
Active Lane Keeping Assist Activating/deactivating (on-
board computer) ............................ 229
Display message ............................ 252
Function/informatio n.................... 209
Trailer towing ......................... 206, 212
Active light function .........................115
Active Parking Assist Canceling ...................................... .192
Detecting parking spaces ..............189
Display message ............................ 253
Exiting a parking space ..................191
Important safety notes ..................188
Parking .......................................... 190
Towing a trailer .............................. 192
Adaptive Highbeam Assist
Display message ............................ 247
Function/notes ............................. 116
Switching on/off ...................116, 117
Switching on/off (on-board
computer) ...................................... 231
Additives (engine oil) ........................372Air bags
Display message ............................ 242
Front air bag (driver, front
passenger) ....................................... 46
Important safety notes ....................44
Knee bag .......................................... 46
PASSENGER AIR BAG OFF
indicator lamp .................................. 49
Pelvis air bag ................................... 48
Safety guidelines ............................. 43
Side impact air bag ..........................47
Window curtain air bag ....................48
Air-conditioning system
see Climate control
Air filter (display message) ..............250
AIR FLOW ........................................... 135
Air vents Glove box ...................................... .141
Important safety notes ..................140
Rear ............................................... 141
Setting ........................................... 140
Setting the center air vents ...........140
Setting the side air vents ...............140
Alarm system
see ATA (Anti-Theft Alarm system)
Anti-lock braking system
see ABS (Anti-lock Braking System)
Anti-theft alarm system
see ATA (Anti-Theft Alarm system)
Approach/departure angle ..............173
Ashtray ............................................... 283
Assistance display (on-board
computer) .......................................... 228
Assistance menu (on-board
computer) .......................................... 228
ASSYST PLUS Displaying a service message ........300
Hiding a service message ..............300
Notes ............................................. 300
Resetting the service interval
displa y........................................... 300
Service message ............................ 300
Special service requirements ......... 301
ATA (Anti-Theft Alarm system)
Activating/deactivating ...................74
Function .......................................... .74
Switching off the alarm ....................744
Index
Engine oil
Adding ........................................... 303
Additives ........................................ 372
Checking the oil level ..................... 302
Checking the oil level using the
dipstick .......................................... 303
Display message ............................ 249
Filling capacity ............................... 372
Notes about oil grades ................... 371
Notes on oil level/consumption ....302
Viscosity ........................................ 372
ESP ®
(Electronic Stability
Program) Deactivating/activating ...................70
Display message ............................ 236
ETS/4ETS ........................................ 70
Function/notes ......................... 69, 70
Important safety information ...........70
Trailer stabilization ........................... 71
Warning lamp ................................. 265
ETS/4ETS (Electronic Traction
System) ................................................ 70
Exhaust check ................................... 166
Exhaust tail pipe (cleaning
instructions) ...................................... 310
Exterior lighting Setting options .............................. 112
see Lights
Exterior mirrors
Adjusting ....................................... 106
Dipping (automatic) .......................107
Folding in/out (automatically). ......107
Folding in/out (electrically). ..........107
Folding in when locking (on-board
computer) ...................................... 234
Out of position (troubleshooting) ...107
Setting ........................................... 107
Storing settings (memory function) 109
Storing the parking position ..........108 F
Filler cap see Fuel filler flap
First-aid kit ......................................... 314 Flat tire
MOExtended run-flat system .........315
Preparing the vehicle .....................314
see Emergency spare wheel
Floormats ........................................... 298
Fog lamps Switching on/off ........................... 113
Folding the rear bench seat
forwards/back .................................. 276
Fording Off-road ......................................... 170
On flooded roads ........................... 170
Front fog lamps
Display message ............................ 245
Switching on/off ........................... 113
Fuel
Additives ........................................ 369
Consumption statistics ..................223
Displaying the current
consumption .................................. 224
Displaying the range ......................224
Driving tips .................................... 166
Fuel gauge ....................................... 33
Grade (gasoline) ............................ 369
Important safety notes ..................368
Premium-grade unleaded gasoline .369
Problem (malfunction) ...................161
Quality (diesel )............................... 370
Refueling ........................................ 158
Tank content/reserve fuel .............368
Fuel filler flap
Opening/closing ............................ 159
Fuel filter (display message) ............250
Fuel level Calling up the range (on-board
computer) ...................................... 224
Fuel tank
Capacity ........................................ 368
Problem (malfunction) ...................161
Fuse allocation chart (vehicle tool
kit) ...................................................... 314
Fuses Allocation chart ............................. 325
Before changing ............................. 325
Dashboard fuse box .......................325
Fuse box in the cargo
compartment ................................. 32610
Index
Emergency call
.............................. 288
General notes ................................ 287
Geo fencing ................................... 295
Locating a stolen vehicle ...............293
MB info call button ........................290
Remote vehicle locking ..................292
Roadside Assistance button ..........290
Search & Send ............................... 292
Self-test ......................................... 288
Speed alert .................................... 294
System .......................................... 288
Triggering the vehicle alarm ........... 295
Vehicle remote malfunction
diagnosis ....................................... 293
Vehicle remote unlocking ..............292
Mechanical key
Function/notes ................................ 78
Locking vehicle ................................ 83
Unlocking the driver's door ..............83
Memory card (audio) .........................226
Memory function ............................... 109
Message memory (on-board
computer) .......................................... 235
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) ............227
Modifying the programming
(SmartKey) ........................................... 77
MOExtended run-flat system ...........315
Mounting wheels Lowering the vehicle ......................358
Mounting a new wheel ...................357
Preparing the vehicle .....................355
Raising the vehicle .........................356
Removing a wheel ..........................357
Securing the vehicle against
rolling away ................................... 355
MP3
Operation ....................................... 226
see separate operating instructions
Multifunction display
Function/notes ............................. 222
Permanent displa y......................... 231Multifunction steering wheel
Operating the on-board computer .221
Overview .......................................... 35 N
Navigation Menu (on-board computer) ............225
see separate operating instructions
NECK-PRO head restraints
Operation ........................................ .54
Resetting after being triggered ........55
NECK-PRO luxury head restraints
Operation ........................................ .54
Resetting after being triggered ........55
Notes on breaking-in a new vehicle 144 O
Occupant Classification System
(OCS) Faults ............................................... 53
Operation ........................................ .49
System self-test ............................... 52
Occupant safety
Children in the vehicle .....................61
System overview .............................. 42
OCS
Faults ............................................... 53
Operation ........................................ .49
System self-test ............................... 52
Odometer ........................................... 223
Off-road driving Approach/departure angl e............ 376
Checklist after driving off-road ......172
Checklist before driving off-road .... 172
Fording depth ................................ 375
General information .......................172
Important safety notes ..................171
Maximum gradient climbing ability 376
Traveling uphill ............................... 173
Oil
see Engine oil
On-board computer
Assistance menu ........................... 228
Audio menu ................................... 226
Convenience submenu ..................233
Displaying a service message ........300 Index
13
Seat belts
Adjusting the driver's and front-
passenger seat belt .........................58
Adjusting the height ......................... 58
Belt force limiters ............................ 60
center rear-compartment sea t......... 59
Cleaning ......................................... 312
Correct usage .................................. 56
Emergency Tensioning Devices ....... .60
Fastening ......................................... 58
Important safety guidelines .............56
Releasing ......................................... 59
Safety guidelines ............................. 43
Switching belt adjustment on/off
(on-board computer) ......................233
Warning lamp ................................. 261
Warning lamp (function) ................... 59
Seats
Adjusting (electrically) ...................100
Adjusting lumbar support ..............102
Adjusting the 4-way lumbar
support .......................................... 103
Adjusting the head restraint ..........101
Cleaning the cover .........................311
Correct driver's seat position ........... 98
Folding the backrest (rear
compartment) forwards/back .......276
Folding the rear bench seat
forwards/back ............................... 276
Important safety notes ....................99
Seat heating problem ....................104
Storing settings (memory function) 109
Switching seat heating on/off .......103
Sensors (cleaning instructions) .......309
Service menu (on-board computer) .230
Service products Brake fluid ..................................... 372
Coolant (engine) ............................ 372
DEF special additives .....................370
Engine oil ....................................... 371
Fuel ................................................ 367
Important safety notes ..................367
Refrigerant (air-conditioning
system) .......................................... 374
Washer fluid .................................. .373
Settings
Factory (on-board computer) .........234
On-board computer .......................230Setting the air distribution
...............136
Setting the airflow ............................137
Side impact air bag .............................47
Side marker lamp (display
message) ............................................ 245
Side windows Cleaning ......................................... 308
Convenience closing feature ............90
Convenience opening feature ..........90
Important safety information ...........88
Opening/closing .............................. 89
Problem (malfunction) .....................92
Resetting ......................................... 91
Sliding sunroof
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery .......................79
Changing the programming .............77
Checking the battery .......................79
Convenience closing feature ............90
Convenience opening feature ..........90
Display message ............................ 260
Door central locking/unlocking .......76
Important safety notes ....................76
Loss ................................................. 80
Mechanical key ................................ 78
Positions (ignition lock) .................145
Problem (malfunction) .....................80
Starting the engine ........................147
Snow chains ...................................... 333
Sockets Center console .............................. 284
General notes ................................ 284
Rear compartment .........................285
Spare wheel
Storage location ............................ 362
Stowing .......................................... 363
Specialist workshop ............................ 27
Special seat belt retractor .................. 64
Speed, controlling see Cruise control
Speedometer
Digital ............................................ 224
In the Instrument cluster .................33
Segments ...................................... 221
Selecting the unit of measurement 230
see Instrument cluster 16
Index
Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Read the information on qualified
specialist workshops: (Y page 27).SmartKey
Important safety notes
G
WARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shifting the automatic transmission out of
park position P
R Start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children. G
WARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle. G
WARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be
unintentionally turned in the ignition lock. This
could cause the engine to be switched off.
There is a risk of an accident.
Do not attach any heavy or large objects to
the SmartKey. Remove any bulky key rings
before inserting the SmartKey into the
ignition lock.
! Keep the SmartKey away from strong
magnetic fields. Otherwise, the remote
control function could be affected.
Strong magnetic fields can occur in the
vicinity of powerful electrical installations.
R Do not keep the KEYLESS-GO key:
-with electronic devices, e.g. a mobile
phone or another SmartKey
- with metallic objects, e.g. coins or metal
foil
- inside metallic objects e.g. a metal case
This can affect the functionality of the
SmartKey. SmartKey functions
The SmartKey centrally locks/unlocks:
R the doors
R the tailgate
R the fuel filler flap 76
SmartKeyOpening and closing
Do not switch off the ignition while driving.
G
WARNING
If the parking brake has not been fully
released when driving, the parking brake can:
R overheat and cause a fire
R lose its hold function.
There is a risk of fire and an accident. Release
the parking brake fully before driving off.
! Warm up the engine quickly. Do not use
the engine's full performance until it has
reached operating temperature.
Only shift the automatic transmission to
the desired drive position when the vehicle
is stationary.
Where possible, avoid spinning the drive
wheels when pulling away on slippery
roads. You could otherwise damage the
drive train. Key positions
SmartKey 005A
To remove the SmartKey
(shift the transmission to position P)
0047 Power supply for some consumers, such
as the windshield wipers
0048 Ignition (power supply for all consumers)
and drive position
0049 To start the engine
The steering is locked when you remove the
SmartKey from the ignition lock. i
The SmartKey can be turned in the
ignition lock even if it is not the correct
SmartKey for the vehicle. The ignition is not
switched on. The engine cannot be started.
KEYLESS-GO General notes
R
Do not keep the KEYLESS-GO key:
-with electronic devices, e.g. a mobile
phone or another SmartKey
- with metallic objects, e.g. coins or metal
foil
- inside metallic objects, e.g. a metal case
This can impair the functionality of the
KEYLESS-GO key.
Vehicles with KEYLESS-GO are equipped with
a SmartKey featuring an integrated KEYLESS-
GO function and a detachable Start/Stop
button.
The Start/Stop button must be inserted in the
ignition lock and the SmartKey must be in the
vehicle.
Pressing the Start/Stop button several times
in succession corresponds to the different
key positions in the ignition lock. This is only
the case if you are not depressing the brake
pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts
immediately.
The Start/Stop button can be removed from
the ignition lock. Then, you can insert the
SmartKey into the ignition lock.
i You do not have to remove the Start/Stop
button from the ignition lock when you
leave the vehicle. You should, however,
always take the SmartKey with you when
leaving the vehicle. The vehicle can be
started with the Start/Stop button if the
SmartKey is in the vehicle. Electrically
powered equipment can be operated. Driving
145Driving an d parking Z
Problems with the transmission
Problem Possible causes/consequences and
0050
0050Solutions The transmission has
problems shifting gear. The transmission is losing oil.
X
Have the transmission checked at a qualified specialist
workshop immediately. The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergency mode.
It is only possible to shift into
secondgear and reverse gear.
X Stop the vehicle.
X Shift the transmission to position P.
X Switch off the engine.
X Wait at least ten seconds before restarting the engine.
X Shift the transmission to position Dor R.
If D is selected, the transmission shifts into secondgear; ifRis
selected, the transmission shifts into reverse gear.
X Have the transmission checked at a qualified specialist
workshop immediately. Transfer case
This section is only valid for vehicles with 4-
wheel drive (4MATIC). Power is always
transmitted to both axles.
! Performance tests may only be carried
out on a 2-axle dynamometer. The brake
system or transfer case could otherwise be
damaged. Contact a qualified specialist
workshop for a performance test.
! To prevent ESP ®
from intervening, the
ignition must be switched off (SmartKey in
position 0or 1) if:
R the parking brake is being tested on a
brake dynamometer.
R the vehicle is being towed with only one
axle raised (not permitted for vehicles
with 4MATIC).
The brake system could otherwise be
damaged.
! Vehicles with 4MATIC must not be towed
with either the front or the rear axle raised,
as doing so will damage the transmission. Refueling
Important safety notes
G
WARNING
Fuel is highly flammable. If you handle fuel
incorrectly, there is a risk of fire and
explosion.
You must avoid fire, open flames, creating
sparks and smoking. Switch off the engine
and, if applicable, the auxiliary heating before
refueling. G
WARNING
Fuel is poisonous and hazardous to health.
There is a risk of injury.
You must make sure that fuel does not come
into contact with your skin, eyes or clothing
and that it is not swallowed. Do not inhale fuel
vapors. Keep fuel away from children. 158
RefuelingDriving and parking
becomes trapped in snow. There is a risk of
fatal injury.
If you leave the engine or the auxiliary heating
running, make sure the exhaust pipe and area
around the vehicle are clear of snow. To
ensure an adequate supply of fresh air, open
a window on the side of the vehicle that is not
facing into the wind.
Have your vehicle winterproofed at a qualified
specialist workshop at the onset of winter.
Observe the notes in the "Winter operation"
section (Y page 332).
Driving with summer tires Observe the notes in the "Winter operation"
section (Y page 332).
Slippery road surfaces G
WARNING
If you shift down on a slippery road surface in
an attempt to increase the engine's braking
effect, the drive wheels could lose their grip.
There is an increased danger of skidding and
accidents.
Do not shift down for additional engine
braking on a slippery road surface.
Drive particularly carefully on slippery road
surfaces. Avoid sudden acceleration, steering
and braking maneuvers. Do not use the cruise
control or DISTRONIC PLUS.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the transmission to position N.
i For more information on driving with
snow chains, see (Y page 333).
The outside temperature indicator is not
designed to serve as an ice-warning device
and is therefore unsuitable for that purpose.
Changes in the outside temperature are
displayed after a short delay.
Indicated temperatures just above the
freezing point do not guarantee that the road surface is free of ice. The road may still be icy,
especially in wooded areas or on bridges. The
vehicle could skid if you fail to adapt your
driving style. Always adapt your driving style
and drive at a speed to suit the prevailing
weather conditions.
You should pay special attention to road
conditions when temperatures are around
freezing point.
Off-road driving
Important safety notes G
WARNING
If you drive on a steep incline at an angle or
turn when driving on an incline, the vehicle
could slip sideways, tip and rollover. There is
a risk of an accident.
Always drive on a steep incline in the line of
fall (straight up or down) and do not turn the
vehicle.
When driving off-road, sand, mud and water,
possibly mixed with oil, for example, could get
into the brakes. This could result in a reduced
braking effect or in total brake failure and also
in increased wear and tear. The braking
characteristics change depending on the
material ingressing the brakes. Clean the
brakes after driving off-road. If you detect a
reduced braking effect or grinding noises,
have the brake system checked in a qualified
specialist workshop as soon as possible.
Adapt your driving style to the different
braking characteristics.
Driving off-road increases the likelihood of
damage to the vehicle, which, in turn, can lead
to failure of the mechanical assembly or
systems. Adapt your driving style to suit the
terrain conditions. Drive carefully. Have
damage to the vehicle rectified immediately
at a qualified specialist workshop.
Do not switch to transmission position N
when driving off-road. If you try to brake the
vehicle using the service brake, you could
lose control of the vehicle. If the gradient is Driving tips
171Driving and parking Z