Brake force distribution, elec-
tronic
see EBD (electronic brake force
distribution)
Brake lamps
Display message ............................ 334
Brake pedal
Pedal resistance/pedal travel .......... 48
Brakes
ABS .................................................. 76
Adaptive Brake Assist ...................... 81
BAS .................................................. 77
BAS PLUS with Cross-Traffic
Assist ............................................... 77
Brake fluid (notes) ......................... 492
Display message ............................ 317
EBD .................................................. 83
High-performance brake system .... 227
Hill start assist ............................... 192
HOLD function ............................... 242
Important safety notes .................. 226
Maintenance .................................. 226
Parking brake ................................ 222
RBS warning lamp .......................... 366
Recuperative Brake System ............. 48
Riding tips ...................................... 226
Warning lamp ................................. 357
Breakdown
see Flat tire
see Towing away
Brightness control (instrument
cluster lighting) ................................... 37
Buttons on the steering wheel ......... 295C
California Important notice for retail cus-
tomers and lessees .......................... 26
Calling up a malfunction
see Display messages
Camera
see 360° camera
Car
see Vehicle
Car key
see SmartKey Care
360° camera ................................. 416
Car wash ........................................ 411
Carpets .......................................... 419
Display ........................................... 417
Exhaust pipe .................................. 417
Exterior lights ................................ 415
Gear or selector lever .................... 418
Interior ........................................... 417
Matte finish ................................... 414
Night View Assist Plus ................... 417
Note s............................................. 411
Paint .............................................. 413
Plastic trim .................................... 418
Power washer ................................ 413
Rear view camera .......................... 416
Roof lining ...................................... 419
Seat belt ........................................ 419
Seat cove r..................................... 418
Sensors ......................................... 415
Steering wheel ............................... 418
Trim pieces .................................... 418
Washing by hand ........................... 413
Wheels ........................................... 414
Windows ........................................ 415
Wiper blades .................................. 415
Wooden trim .................................. 418
CD player/CD changer (on-board
computer) .......................................... 304
Center console
Overview .......................................... 39
Stowage space .............................. 373
Center console in the rear com-
partment
Stowage compartment .................. 375
Central locking
Locking/unlocking (SmartKey )........ 91
Charging
see Charging the high-voltage bat-tery (important safety notes)
Charging cable
Connecting .................................... 214
Controls ......................................... 213
Important safety notes .................. 212
Indicator lamp ................................ 214
Removing ....................................... 215
Storing ........................................... 212
Warming up ................................... 211 6
Index
Charging the high-voltage battery
(important safety notes) ...................209
Chauffeur mode
Display message ............................ 352
Fully reclined position .................... 131
General notes ................................ 127
Installing the head restraint ........... 129
Moving front-passenger seat into
the chauffeur position .................... 128
Moving the front-passenger seat
into the normal position ................. 130
Removing the head restraint .......... 129
Child
Restraint system .............................. 70
Child seat
Forward-facing restraint system ...... 74
LATCH-type (ISOFIX) child seat
anchors ............................................ 71
On the front-passenger sea t............ 74
Rearward-facing restraint system .... 74
Top Tether ....................................... 73
Child-proof locks
Important safety notes .................... 74
Rear doors ....................................... 75
Children
In the vehicle ................................... 69
Special seat belt retractor ............... 69
Cigarette lighter ................................ 383
Cleaning
Mirror turn signal ........................... 415
Climate control
Automatic climate control ............. 165
Controlling automaticall y............... 171
Cooling with air dehumidification .. 170
Defrosting the windows ................. 176
Defrosting the windshield .............. 175
ECO start/stop function ................ 169
General notes ................................ 164
Immediate pre-entry climate con-
trol ................................................. 183
Indicator lamp ................................ 171
Ionization ....................................... 180
Notes on using the automatic cli-
mate control .................................. 169
Overview of systems ...................... 164
Perfume atomizer .......................... 178 Pre-entry climate control at
departure time (REMOTE CLI-
MATE CONTROL) ........................... 182
Pre-entry climate control via key ... 180
Problem with the rear window
defroster ........................................ 177
Problems with cooling with air
dehumidification ............................ 171
Rear control panel ......................... 165
Refrigerant ..................................... 494
Refrigerant filling capacity ............. 495
Setting the air distribution ............. 174
Setting the air vents ...................... 184
Setting the airflow ......................... 174
Setting the climate mod e............... 173
Setting the temperature ................ 173
Switching air-recirculation mode
on/of f............................................ 177
Switching on/of f........................... 169
Switching residual heat on/off ...... 177
Switching the rear window
defroster on/of f............................ 176
Switching the synchronization
function on and off ........................ 175
Climate control system
Climate control .............................. 169
Cockpit
Overview .......................................... 34
COLLISION PREVENTION ASSIST
PLUS
Activating/deactivating ................. 309
Display message ............................ 325
Operation/note s.............................. 79
COMAND display
Cleaning ......................................... 417
Combination switch .......................... 152
Consumption statistics (on-board
computer) .......................................... 300
Convenience closing feature ............ 108
Convenience opening feature .......... 107
Coolant (engine)
Checking the level ......................... 408
Display message ............................ 336
Displaying the temperature (on-
board computer) ............................ 307
Filling capacity ............................... 493
Important safety notes .................. 493
Temperature gaug e........................ 294 Index
7
RBS (Recuperative Brake System)
Warning lamp ................................. 366
Reading lamp ..................................... 155
Rear compartment
Activating/deactivating climate
control ........................................... 169
Setting the air distribution ............. 174
Setting the air vents ...................... 185
Setting the airflow ......................... 174
Setting the temperature ................ 173
Stowage compartment .................. 374
Rear lamps
see Lights
Rear seats
Adjusting ....................................... 123
Adjusting a rear reclining seat ....... 123
Overview .......................................... 43
Setting the reclined position .......... 123
Rear view camera
Cleaning instructions ..................... 416
Function/notes ............................ .256
Switching on/off ........................... 257
Rear window blind ............................ 381
Rear window defroster
Problem (malfunction) ................... 177
Switching on/off ........................... 176
Rear-view mirror
Anti-glare (manual) ........................ 140
Dipping (automatic) ....................... 142
Recuperation display ........................ 299
Recuperative Brake System
Driving safety systems ..................... 48
Important safety notes .................... 48
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 494
Refueling
Fuel gauge ....................................... 35
Important safety notes .................. 205
Refueling process .......................... 206
see Fuel
Remote control
Garage door opene r....................... 397
Programming (garage door
opener) .......................................... 398
Replacing bulbs
General notes ................................ 157
Reporting safety defects .................... 30Rescue card
......................................... 30
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 339
Warning lamp ................................. 363
Residual heat (climate control) ........ 177
Restraint system
Display message ............................ 328
Introduction ..................................... 49
Warning lamp ................................. 362
Warning lamp (function) ................... 50
Reversing feature
Panorama sliding sunroo f.............. 111
Roller sunblind s............................. 112
Side windows ................................. 106
Trunk lid ......................................... 100
Reversing lamps (display mes-
sage) ................................................... 335
ROAD SURFACE SCAN ....................... 245
Roadside Assistance (breakdown) .... 26
Roller sunblind
Panorama roof with power tilt/
sliding panel .................................. 112
Rear side window s......................... 381
Rear window .................................. 381
Roller sunblind of the panorama
roof with power tilt/sliding panel
Operating (front roller sunblind) .... 113
Operating (rear roller sunblind )...... 113
Roof carrier ........................................ 377
Roof lining and carpets (cleaning
guidelines) ......................................... 419
Roof load (maximum) ........................ 495 S
Safety Occupant Classification System
(OCS) ............................................... 59
see Operating safety
Safety notes
Hybrid vehicles ................................ 46
Safety system
see Driving safety systems
Seat
Multicontour seat in the rear com-partment ........................................ 134 Index
17
Technical data
Capacities ...................................... 489
Information .................................... 488
Tires/wheels ................................. 471
Vehicle data ................................... 495
Telephone
Accepting a call (multifunction
steering wheel) .............................. 306
Display message ............................ 353
Introduction ................................... 305
Menu (on-board computer) ............ 305
Number from the phone book ........ 306
Redialing ........................................ 306
Rejecting/ending a call ................. 306
Temperature
Coolant .......................................... 294
Coolant (on-board computer) ......... 307
Engine oil (on-board computer) ...... 314
Outside temperature ...................... 295
Setting (climate control) ................ 173
Tire pressure
Calling up (on-board computer) ..... 449
Checking manuall y........................ 448
Display message ............................ 348
Important safety notes .................. 449
Maximum ....................................... 448
Not reached (TIREFIT) .................... 426
Notes ............................................. 447
Reached (TIREFIT) .......................... 426
Recommended ............................... 445
Tire pressure loss warning system
General notes ................................ 452
Important safety notes .................. 452
Restarting ...................................... 452
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 450
Function/note s............................. 449
General notes ................................ 449
Important safety notes .................. 449
Radio type approval for the tire
pressure monitor ........................... 452
Restarting ...................................... 451
Warning lamp ................................. 368
Warning message .......................... 451
TIREFIT kit .......................................... 424
Tires
Aspect ratio (definition) ................. 464 Average weight of the vehicle
occupants (definition) .................... 463
Bar (definition) ............................... 463
Changing a whee l.......................... 465
Characteristics .............................. 463
Checking ........................................ 443
Curb weight (definition) ................. 464
Definition of terms ......................... 463
Direction of rotation ...................... 466
Display message ............................ 348
Distribution of the vehicle occu-
pants (definition) ............................ 465
DOT (Department of Transporta-
tion) (definition) ............................. 463
DOT, Tire Identification Number
(TIN) ............................................... 462
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 463
GVW (Gross Vehicle Weight) (def-
inition) ........................................... 464
GVWR (Gross Vehicle Weight Rat- ing) (definition) .............................. 464
Important safety notes .................. 442
Increased vehicle weight due to
optional equipment (definition) ...... 463
Kilopascal (kPa) (definition) ........... 464
Labeling (overview) ........................ 459
Load bearing index (definition) ...... 465
Load index ..................................... 462
Load index (definition) ................... 464
Maximum load on a tire (defini-
tion) ............................................... 464
Maximum loaded vehicle weight
(definition) ..................................... 464
Maximum permissible tire pres-
sure (definition) ............................. 464
Maximum tire load ......................... 462
Maximum tire load (definition) ....... 464
MOExtended tire s.......................... 444
Optional equipment weight (defi-
nition) ............................................ 465
PSI (pounds per square inch) (def-
inition) ........................................... 464
Replacing ....................................... 465
Service life ..................................... 444
Sidewall (definition) ....................... 465
Speed rating (definition) ................ 464
Storing ........................................... 466 20
Index
Vehicles with belt bags:
the belt bags are
also deployed depending on the type and
severity of the accident.
Vehicles with a rear reclining seat: the
Emergency Tensioning Device is only trig-
gered if the belt buckle tongue is engaged in
the belt buckle.
If the seat backrest is reclined, the cushion air bag will also be deployed depending on the
type and severity of the accident.
If the restraint system control unit detects a
more severe accident, further components of the restraint system are activated independ-
ently of each other in certain frontal collision
situations:
R Front air bags and driver's knee bag
R Window curtain air bag, if the system deter-
mines that deployment can offer additional protection to that provided by the seat belt
The front-passenger front air bag is activated
or deactivated depending on the person on
the front-passenger seat. The front-
passenger front air bag can only deploy in an accident if the PASSENGER AIR BAG ON indi-
cator lamp is lit. Observe the information on
the PASSENGER AIR BAG indicator lamps
(Y page 50).
Your vehicle has two-stage front air bags.
During the first deployment stage, the front
air bag is filled with propellant gas to reduce
the risk of injuries. The front air bag is fully
deployed with the maximum amount of pro-
pellant gas if a second deployment threshold
is reached within a few milliseconds.
The activation threshold of the Emergency
Tensioning Devices and the air bag are deter-
mined by evaluating the rate of vehicle decel-
eration or acceleration which occurs at vari-
ous points in the vehicle. This process is pre- emptive in nature. Deployment should take
place in good time at the start of the collision. The rate of vehicle deceleration or accelera-
tion and the direction of the force are essen-
tially determined by:
R the distribution of forces during the colli-
sion
R the collision angle
R the deformation characteristics of the vehi-
cle
R the characteristics of the object with which
the vehicle has collided
Factors which can only be seen and measured
after a collision has occurred do not play a
decisive role in the deployment of an air bag.
Nor do they provide an indication of air bag
deployment.
The vehicle can be deformed considerably,
without an air bag being deployed. This is the
case if only parts which are relatively easily
deformed are affected and the rate of decel-
eration is not high. Conversely, air bags may
be deployed even though the vehicle suffers
only minor deformation. This is the case if, for example, very rigid vehicle parts such as lon-
gitudinal body members are hit, and sufficient deceleration occurs as a result.
If the restraint system control unit detects a
side impact or that the vehicle is rolling over,
the relevant restraint system components are activated independently of one another
depending on the apparent type of accident.
If the system determines a need for additional
protection for the vehicle occupants, the
Emergency Tensioning Devices are triggered.
R Side impact air bags on the side of impact,
independently of the Emergency Tension-
ing Device and the use of the seat belt on
the driver's seat and outer seats in the sec-
ond row 66
Occupant safetySafety
When the override feature is activated, the
controls in the rear compartment are disabled
for:
R the rear side windows
R adjustment of the front-passenger seat
from the rear compartment
R the sunblinds:
- of the rear side windows
- of the rear window
- in the roof Pets in the vehicle
G
WARNING
If you leave animals unattended or unsecured in the vehicle, they could press buttons or
switches, for example.
As a result, they could:
R activate vehicle equipment and become
trapped, for example
R activate or deactivate systems, thereby
endangering other road users
Unsecured animals could also be flung around
the vehicle in the event of an accident or sud- den steering or braking, thereby injuring vehi-
cle occupants. There is a risk of an accident
and injury.
Never leave animals unattended in the vehi-
cle. Always secure animals properly during
the journey, e.g. use a suitable animal trans-
port box. Driving safety systems
Overview of driving safety systems
In this section, you will find information about the following driving safety systems:
R ABS (Anti-lock BrakingSystem)
(Y page 76)
R BAS ( Brake Assist System) (Y page 77)
R BAS PLUS (Brake AssistSystem PLUS) with
Cross-Traffic Assist (Y page 77)R
COLLISION PREVENTION ASSIST PLUS
(distance warning function and Adaptive
Brake Assist) (Y page 79)
R ESP ®
(Electronic StabilityProgram)
(Y page 81)
R EBD ( Electronic Brake force Distribution)
(Y page 83)
R ADAPTIVE BRAKE (Y page 84)
R PRE-SAFE ®
Brake (Y page 84)
R STEER CONTROL (Y page 86) Important safety notes
If you fail to adapt your driving style or if you
are inattentive, the driving safety systems can
neither reduce the risk of an accident nor
override the laws of physics. Driving safety
systems are merely aids designed to assist
driving. You are responsible for maintaining
the distance to the vehicle in front, for vehicle
speed, for braking in good time and for stay-
ing in lane. Always adapt your driving style to
suit the prevailing road and weather condi-
tions and maintain a safe distance from the
vehicle in front. Drive carefully.
The driving safety systems described only
work as effectively as possible when there is
adequate contact between the tires and the
road surface. Please pay special attention to
the notes on tires, recommended minimum
tire tread depths, etc. (Y page 442).
In wintry driving conditions, always use winter
tires (M+S tires) and if necessary, snow
chains. Only in this way will the driving safety systems described in this section work as
effectively as possible. ABS (Anti-lock Braking System)
General information ABS regulates brake pressure in such a way
that the wheels do not lock when you brake.
This allows you to continue steering the vehi-
cle when braking. 76
Driving safety systemsSafety
ability to react to excessively high tempera-
tures may be affected or they may even suffer burn-like injuries. There is a risk of injury.
Therefore, do not switch the seat heating on
repeatedly.
For vehicles equipped with the Warmth Com-
fort package: the armrest in the door and the center console can also be heated when you
switch on the seat heating of one of the front
seats. This can be set with COMAND (see the
separate operating instructions).
The three red indicator lamps in the button
indicate the heating level you have selected.
The system automatically switches down
from level 3to level 2after approximately
eight minutes.
The system automatically switches down
from level 2to level 1after approximately ten
minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level 1.
Vehicles with the Seat Heating Plus package: you can set the distribution of the heated
sections of the seat cushion and backrest on the front seats via COMAND (see the sepa-
rate operating instructions).
Vehicles with the Seat Heating Plus package: you can set the distribution of the heated
sections of the seat cushion and backrest via
COMAND (see the Digital Operator's Man-
ual).
Vehicles with Rear Seat Entertainment Sys-
tem and electric seat adjustment: you can set
the distribution of the heated sections of the rear seat cushion and backrest via the Rear
Seat Entertainment System (see the separate operating instructions). Front seats X
Turn the SmartKey to position 1or 2in the
ignition lock (Y page 189).
X To switch on: press button:repeatedly
until the desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off.
Rear seats X
Turn the SmartKey to position 1or 2in the
ignition lock (Y page 189).
X To switch on: press button:repeatedly
until the desired heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
heating may switch off. Seats
135Seats, steering wheel and mirrors Z
G
WARNING
Children could become trapped if they acti-
vate the memory function, particularly when
unattended. There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle. Storing settings
The memory function is only available in vehi- cles with the memory package.
With the memory function, you can store up
to three different settings, e.g. for three dif-
ferent people.
The following settings are stored as a single
memory preset:
R seat, backrest, head restraint position and
contour of the backrest in the lumbar
region
R active multicontour seat: side bolsters of
the backrest, shoulder of the backrest, con- tour of the backrest, dynamic function level
R seat heating: distribution of the heated sec-
tions of the seat cushion and backrest
R driver's side: position of the exterior mir-
rors on the driver's and front-passenger
sides X
Adjust the seat accordingly (Y page 122).
X On the driver's side, adjust the steering
wheel (Y page 137) and the exterior mirrors
(Y page 141).
X Press memory button Mand one of the
storage position buttons 1,2or 3within
three seconds.
The settings are stored in the selected pre- set position. A tone sounds when the set-
tings have been completed. Calling up a stored setting
X Press and hold the corresponding storage
position button 1,2or 3until:
R Seat
R Steering wheel
R Exterior mirrors
are in the stored position.
i If you release the storage position button,
the seat, steering wheel and mirror setting
functions stop immediately. The multicon-
tour seat setting or the 4-way lumbar sup-
port is still carried out. Memory function in the rear compart-
ment Important safety notes
G
WARNING
When the memory function adjusts the seat or steering wheel, you and other vehicle occu-
pants – particularly children – could become
trapped. There is a risk of injury.
While the memory function is making adjust-
ments, make sure that no one has any body
parts in the sweep of the seat or steering
wheel. If somebody becomes trapped, imme-
diately release the memory function position
button. The adjustment process is stopped. 144
Memory function in the rear compartmentSeats, steering wheel and mirrors