Fuel filler flap
Opening/closing ............................ 173
Fuel level
Calling up the range (on-board
computer) ...................................... 230
Fuel tank
Capacity ........................................ 610
Problem (malfunction) ...................175
Fuse allocation chart (vehicle tool
kit) ...................................................... 556
Fuses Allocation chart ............................. 570
Before changing ............................. 570
Dashboard fuse box .......................571
Fuse box in the engine
compartment ................................. 571
Fuse box in the rear compartment .572
Important safety notes ..................570 G
Garage door opener Clearing the memory .....................538
Important safety notes ..................536
Opening/closing the garage door ..538
Programming (button in the rear-
view mirror) ................................... 536
Gear indicator (on-board computer) 241
Genuine parts ...................................... 29
Glass roof (sunblind) .........................107
Glove box ........................................... 520
Google Maps ®
.................................... 348
Google™ local search Importing a destination/route .......418
Popular Searche s........................... 419
Search ........................................... 416
Search history ............................... 419
Selecting a search position ............417
Using as the destination ................418
GPS reception .................................... 323
Gracenote ®
Media Database ............453 H
Handbrake see Parking brake
HANDS-FREE ACCESS .......................... 94Harman/kardon
®
Logic 7 ®
surround sound system see Surround sound (harman/
kardon ®
surround sound system)
Hazard warning lamps
Display message ............................ 271
Switching on/off ........................... 130
Head bags
Display message ............................ 252
Operation ........................................ .54
Heading up (navigation) ...................371
Headlamps Cleaning system (notes) ................614
Fogging up ..................................... 132
see Automatic headlamp mode
Head level heating (AIRSCARF) ........118
Headphones Changing batteries ........................490
Head restraints
Adjusting ....................................... 115
see NECK-PRO head restraints
Heating
see Climate control
High-beam headlamps
Display message ............................ 256
Switching Adaptive Highbeam
Assist on/off ................................. 132
Switching on/off ........................... 129
Hill start assist .................................. 158
HOLD function Activating ....................................... 196
Deactivating ................................... 196
Display message ............................ 262
Function/notes ............................. 195
Home address
Entering and saving .......................332
Selecting from the destination
memory ......................................... 332
Hood
Closing .......................................... .543
Display message ............................ 270
Important safety notes ..................542
Opening ......................................... 542
Hydroplaning ..................................... 183 Index
13
Always pay careful attention to the traffic
situation and be ready to brake.
In the event of snowfall or heavy rain, the
recognition can be impaired.
Recognition by the radar sensor system is
also impaired in the event of:
R dirt on the sensors or anything else
covering the sensors
R interference by other radar sources
R there are strong radar reflections, for
example in parking garages
R a narrow vehicle traveling in front, e.g. a
motorbike
R a vehicle traveling in front on a different line
relative to the center of your vehicle
Following damage to the front end of the
vehicle, have the configuration and operation
of the radar sensors checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the front of the vehicle.
Function X
To activate/deactivate: activate or
deactivate PRE-SAFE ®
Brake in the on-
board computer (Y page 235).
When the PRE-SAFE ®
Brake is deactivated,
the multifunction display in the assistance
graphic shows the 00D4symbol.
Starting at a speed of around 4 mph
(7 km/h), this function warns you if you
rapidly approach a vehicle in front. An
intermittent warning tone will then sound and
the 00BA distance warning lamp will light up
in the instrument cluster.
X Brake immediately to defuse the situation.
or
X Take evasive action provided it is safe to do
so.
PRE-SAFE ®
Brake can also brake the vehicle
automatically under the following conditions:
R the driver and front-passenger have their
seat belts fastened and
R the vehicle speed is between
approximately 4 mph (7 km/h) and
124 mph (200 km/h)
At speeds of up to approximately 40 mph
(70 km/h) PRE-SAFE ®
Brake can also detect
stationary objects. Examples of stationary
objects are stopped or parked vehicles.
i If there is an increased risk of collision,
preventive passenger protection measures
(PRE-SAFE ®
) are activated.
If the risk of collision with the vehicle in front
remains and you do not brake, take evasive
action or accelerate significantly, the vehicle
may perform automatic emergency braking,
up to the point of full brake application.
Automatic emergency braking is not
performed until immediately prior to an
imminent accident.
You can prevent the intervention of the PRE-
SAFE ®
Brake at any time by:
R depressing the accelerator pedal further.
R activating kickdown.
R releasing the brake pedal.
The braking action of PRE-SAFE ®
Brake is
ended automatically if:
R you maneuver to avoid the obstacle.
R there is no longer any danger of a collision.
R there is no longer an obstacle detected in
front of your vehicle. STEER CONTROL
General information STEER CONTROL helps you by transmitting a
noticeable steering force to the steering
wheel in the direction required for vehicle
stabilization.78
Driving safety systemsSafety
USA only
0043
To set the temperature, left (Y page 146)
0044 To set climate control to automatic (Y page 145)
0087 To defrost the windshield (Y page 147)
0085 To switch maximum cooling on/off (Y page 148)
0083 To switch cooling with air dehumidification on/off (Y page 143)
0084 To switch the rear window defroster on/off (Y page 148)
006B To switch the ZONE function on/off (Y page 147)
006C To set the temperature, right (Y page 146)
006D To switch climate control on/off (Y page 143)
006E To set the air distribution (Y page 146)
006F To set the airflow (Y page 147)
0070 To adjust the climate mode settings (Y page 145)
0071 To activate/deactivate air-recirculation mode (Y page 150)Information about using 3-zone
automatic climate control
Automatic climate control The following contains instructions and
recommendations to enable you to get the
most out of your automatic climate control.
R Activate climate control using the 0058and
005A buttons on the control panel of the climate control. The indicator lamps in
the
0058 and005A buttons light up.
R In automatic mode, you can also use the
00F0 button on the control panel for the
climate control to set a climate mode
(FOCUS/MEDIUM/DIFFUSE). The
MEDIUM level is recommended.
R Set the temperature to 72 ‡ (22 †).
R Only use the "Windshield defrosting"
function briefly until the windshield is clear
again. 142
Overview of climate control systemsClimate control
Problems with the "Cooling with air dehumidification" function
Problem Possible causes/consequences and
0050
0050Solutions The indicator lamp in
the
005A button
flashes three times or
remains off. The
"Cooling with air
dehumidification"
function cannot be
switched on. Cooling with air dehumidification has been deactivated due to a
malfunction.
X
Visit a qualified specialist workshop. Setting climate control to automatic
General notes In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the
temperature of the dispensed air, the airflow
and the air distribution.
The automatic mode functions optimally
when the "Cooling with air dehumidification"
function is activated. If necessary, cooling
with air dehumidification can be deactivated.
If you deactivate the "Cooling with air-
dehumidification" function, the air inside the
vehicle will not be cooled. The air inside the
vehicle will also not be dehumidified. The
windows can fog up more quickly. Therefore,
deactivate the cooling with air-
dehumidification function only briefly.
Activating/switching X
Turn the SmartKey to position 2in the
ignition lock (Y page 155).
X Set the desired temperature.
X To activate: press the0058button.
The indicator lamp in the 0058button lights
up. Automatic air distribution and airflow
are activated.
i You can now select a climate mode when
automatic mode is activated
(Y page 145).
X To switch to manual mode: press the
008F button.
or
X Press the 0095or0097 button.
The indicator lamp in the 0058button goes
out. Adjusting the climate mode settings
You can select the following climate mode
settings in automatic mode:
FOCUS high airflow that is set slightly cooler
MEDIUM medium airflow, standard setting
DIFFUSE low airflow that is set slightly warmer and with less draft Operating the climate control systems
145Climate control
Pulling away and driving
Cruise control lever
If you depress the brake, DISTRONIC PLUS is
deactivated unless your vehicle is stationary.
X If the vehicle in front pulls away: remove
your foot from the brake pedal.
X Briefly pull the cruise control lever towards
you 0044or press it up 0043or down 0087.
or
X Accelerate briefly.
Your vehicle pulls away and adapts its
speed to that of the vehicle in front.
If there is no vehicle in front, DISTRONIC
PLUS operates in the same way as cruise
control.
If DISTRONIC PLUS detects that the vehicle
in front has slowed down, it brakes your
vehicle. It maintains the preset distance to
the vehicle in front.
If DISTRONIC PLUS detects that there is a risk
of a collision, you will be warned visually and
acoustically. DISTRONIC PLUS cannot
prevent a collision without your intervention.
An intermittent warning tone will then sound
and the distance warning lamp will light up in
the instrument cluster. Brake immediately in
order to increase the distance from the
vehicle in front, or take evasive action,
provided it is safe to do so.
If DISTRONIC PLUS detects a faster-moving
vehicle in front, it increases the driving speed.
However, the vehicle is only accelerated up
to the speed you have stored. Changing lanes
If you wish to change to the passing lane (in
countries where traffic drives on the right, the
passing lane is the left-hand lane),
DISTRONIC PLUS supports you if:
R you are driving faster than 40 mph
(60 km/h)
R DISTRONIC PLUS is maintaining the
distance to a vehicle in front
R you have switched on the corresponding
turn signal
R DISTRONIC PLUS does not detect a danger
of collision
If these conditions are fulfilled, your vehicle
is accelerated. Acceleration will be
interrupted if changing lanes takes too long
or if the distance between your vehicle and
the vehicle in front becomes too small.
Stopping G
WARNING
When leaving the vehicle, even if it is braked
only by DISTRONIC PLUS, it could roll away if:
R there is a malfunction in the system or in
the voltage supply.
R DISTRONIC PLUS has been deactivated
with the cruise control lever, e.g. by a
vehicle occupant or from outside the
vehicle.
R the electrical system in the engine
compartment, the battery or the fuses have
been tampered with.
R the battery is disconnected.
R the accelerator pedal has been depressed,
e.g. by a vehicle occupant.
There is a risk of an accident.
If you wish to exit the vehicle, always turn off
DISTRONIC PLUS and secure the vehicle
against rolling away.
Deactivating DISTRONIC PLUS
(Y page 193).
If DISTRONIC PLUS detects that the vehicle
in front is stopping, it brakes your vehicle until
it is stationary. 190
Driving systemsDriving and parking
R
the electrical system in the engine
compartment, the battery or the fuses have
been tampered with.
R the battery is disconnected
There is a risk of an accident.
If you wish to exit the vehicle, always turn off
the HOLD function and secure the vehicle
against rolling away.
! If DISTRONIC PLUS or the HOLD function
is activated, the vehicle brakes
automatically in certain situations. To
prevent damage to the vehicle, deactivate
DISTRONIC PLUS and the HOLD function in
the following or other similar situations:
R when towing the vehicle
R in the car wash
Deactivating the HOLD function
(Y page 196).
Activation conditions You can activate the HOLD function if:
R the vehicle is stationary
R the engine is running or if it has been
automatically switched off by the ECO
start/stop function
R the driver's door is closed or your seat belt
is fastened
R the electric parking brake is released
R the transmission is in position D,Ror N
R DISTRONIC PLUS is deactivated
Activating the HOLD function X
Make sure that the activation conditions
are met.
X Depress the brake pedal.
X Quickly depress the brake pedal further
until 0043HOLDHOLD appears in the multifunction
display.
The HOLD function is activated. You can
release the brake pedal.
i If depressing the brake pedal the first
time does not activate the HOLD function,
wait briefly and then try again.
Deactivating the HOLD function The HOLD function is deactivated
automatically if:
R
you accelerate and the transmission is in
position Dor R.
R you shift the transmission to position P.
R you apply the brakes again with a certain
amount of pressure until HOLD
HOLD disappears
from the multifunction display.
R you secure the vehicle using the electric
parking brake.
R you activate DISTRONIC PLUS.
i After a time, the electric parking brake
secures the vehicle and relieves the service
brake.
The electric parking brake automatically
secures the vehicle if the HOLD function is
activated and:
R the driver's door is open and the driver's
seat belt is unfastened.
R the engine is switched off, unless it is
automatically switched off by the ECO
start/stop function.
R a system malfunction occurs.
R the power supply is not sufficient.
If a malfunction occurs, then the transmission
may also be shifted into position P
automatically. 196
Driving systemsDriving an
d parking
Climate control status display
The climate status display in the COMAND display
(example)
If you change the settings of the climate
control system, the climate status display
appears for three seconds at the bottom of
the screen in the COMAND display. You will
see the current settings of the various climate
control functions.
Overview of climate control systems, see the
separate vehicle operating instructions.
The climate status display appears when:
X You turn the temperature control and set
the temperature.
or
X You turn the control to set the airflow.
or
X You press one of the following buttons:
0097 Increases air flow
0095 Decreases air flow
005A Switches climate control on/off
00D6 Switches the ZONE function on/off
0058 Controls the air conditioning
automatically
00F0 Sets the climate control style in
automatic mode (FOCUS/MEDIUM/
DIFFUSE)
008F Sets the air distribution
0099, 009Cor009B Sets the air
distribution
0064 Turns on the defrost function
00C9 Turns on maximum cooling i
The way that the climate control status
display is called up depends on your
vehicle's climate control system. Example settings for the defrost function (top) and
for the climate mode in automatic mode
X
To hide the display: turn or press the
COMAND controller.
or
X Press one of the buttons on COMAND. Fuel consumption indicator
Overview Depending on the vehicle equipment and the
engine variant installed, fuel consumption
can be shown in the COMAND display.
If your vehicle is a hybrid vehicle and the
installed engine variant supports it, you can
call up other displays (see the separate
operating instructions).
Calling up/exiting the display Vehicle functions
317COMAND Z
Useful information
............................556
Where will I find...? ...........................556
Flat tire .............................................. 557
Battery (vehicle) ................................ 561
Jump-starting .................................... 565
Towing and tow-starting ..................567
Fuses .................................................. 570 555Breakdown assistance