
If you are driving at speeds above approx-
imately 19 mph (30 km/h) and no other road users have been detected:
The high-beam headlamps are switched on
automatically. The 0057indicator lamp in the
instrument cluster also lights up.
If you are driving at speeds below approx-
imately 16 mph (25 km/h) or other road users
have been detected or the roads are ade-
quately lit:
The high-beam headlamps are switched off
automatically. The 0057indicator lamp in the
instrument cluster goes out. The 00CEindi-
cator lamp in the multifunction display
remains lit.
X To switch off: move the combination switch
back to its normal position or move the light
switch to another position.
The 00CE indicator lamp in the multifunction
display goes out. Headlamps fogged up on the inside
Certain climatic and physical conditions may
cause moisture to form in the headlamp. This
moisture does not affect the functionality of the headlamp. Interior lighting
Overview of interior lighting
Overhead control panel
0043
003D Switches the left-hand front reading
lamp on/off
0044 004A Switches the front interior lighting on
0087 0043 Switches the rear interior lighting on/
off 0085
0033 Switches the front interior lighting/
automatic interior lighting control off
0083 003D Switches the right-hand front reading
lamp on/off
0084 Switches the automatic interior lighting con-
trol on Interior lighting control
General notes The interior light functions are automatically
switched off after some time to prevent the
vehicle's battery from discharging, unless the
SmartKey is in position
0048in the ignition lock.
The color and brightness of the ambient lighting
are set using the multimedia system (see Digital Operator's Manual).
Automatic interior lighting control X
To switch on: set the switch to center posi-
tion 0084.
X To switch off: set the switch to the 0033
position.
The interior lighting automatically switches on if you:
R Unlock the vehicle
R Open a door
R Remove the SmartKey from the ignition lock
The interior lighting is switched on for a set time
when the SmartKey is removed from the ignition
lock. This delayed switch-off can be adjusted via
the multimedia system (see Digital Operator's
Manual). Crash-responsive emergency lighting
The interior lighting is activated automatically if
the vehicle is involved in an accident.
X To switch off the crash-responsive emer-
gency lighting:
press the hazard warning
lamp button.
or X Lock and then unlock the vehicle using the
SmartKey. 110
Interior lightingLights and windshield wipers

0079
Directs the airflow through the footwell vents (Y page 121)
007A Switches the rear climate control on/off (Y page 119)
007B Reduces the airflow (Y page 121)
007C Switches the seat heating on the left-hand side on/off (Y page 98)Optimum use of automatic climate
control
The following contains notes and recommenda-
tions on optimum use of the dual-zone auto-
matic climate control or 3-zone automatic cli-
mate control.
R You can switch on climate control by using the
0058 and005A or0058 and0056 buttons.
The indicator lamps in the 0058and
005A buttons or the 0058and0056 buttons
light up.
R Vehicles with 3-zone automatic climate
control: in automatic mode, you can also use
the 00F0 button 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.
R Only use air-recirculation mode briefly, e.g. if
there are unpleasant outside odors or when in a tunnel. The windows could otherwise fog up,
since no fresh air is drawn into the vehicle in
air-recirculation mode.
R Vehicles with 3-zone automatic climate
control: use the ZONE function to adopt the
temperature settings on the driver's side for
the front-passenger side and the rear com-
partment as well. The indicator lamp above
the 00D6 button goes out.
R Vehicles with 3-zone automatic climate
control: use the "residual heat" function if
you want to heat or ventilate the vehicle inte- rior when the ignition is switched off. The
residual heat function can only be activated or
deactivated with the ignition switched off.
R If you change the settings of the climate con-
trol system, the climate status display
appears for approximately three seconds at
the bottom of the screen in the multimedia
system display. You will see the current set-
tings of the various climate control functions.
During automatic engine switch-off, the climate
control system only operates at a reduced capa-
city. If you require the full climate control output, you can switch off the ECO start/stop function
by pressing the ECO button (Y page 132). Operating the climate control sys-
tems
Activating/deactivating climate con-
trol
General notes When the climate control is switched off, the air
supply and air circulation are also switched off.
The windows could fog up. Therefore, switch off
climate control only briefly
Activate climate control primarily using the
0058 button (Y page 120).
In the rear compartment, you can also switch
climate control on and off using the 0058and
0078 buttons.
Activating/deactivating X
Turn the SmartKey to position 0048in the igni-
tion lock (Y page 127).
X To activate: press the0058button.
The indicator lamp in the 0058button lights
up. Airflow and air distribution are set to auto- matic mode.
X To deactivate: press the0078button.
The indicator lamp in the 0078button lights
up. Switching cooling with air dehumidi-
fication on/off
Activating/deactivating X
To activate: press the005Aor0056 button.
The indicator lamp in the 005Aor0056 button
lights up.
X To deactivate: press the005Aor0056 but-
ton.
The indicator lamp in the 005Aor0056 button
goes out. The "Cooling with air dehumidifica- Operating the climate control systems
119Climate control

adopted for the front-passenger side and the
rear compartment.
X To deactivate: press the00D6button.
The indicator lamp above the 00D6button
goes out.
Dual-zone automatic climate control: the tem- perature setting for the driver's side is adop-
ted for the front-passenger side.
3-zone automatic climate control: the tem-
perature setting for the driver's side is adop-
ted for the front-passenger side and the rear
compartment. Defrosting the windshield
General notes You can use this function to defrost the wind-
shield or to clear a fogged up windshield or front
side windows on the inside.
Switch off the "Windshield defrosting" function
as soon as the windshield is clear again.
Activating/deactivating X
Turn the SmartKey to position 0048in the igni-
tion lock (Y page 127).
X To activate: press the0064button.
The indicator lamp in the 0064button lights
up.
The climate control system switches to the
following settings:
R high airflow
R high temperature
R air distribution to the windshield and front
side windows
R air-recirculation mode off
X To deactivate: press the0064button.
The indicator lamp in the 0064button goes
out. The previously selected settings are
restored. Air-recirculation mode remains
deactivated. MAX COOL maximum cooling
The MAX COOL function is only available in vehi-
cles for the USA.
MAX COOL is only operational when the engine is running. X
To activate: press the00C9button.
The indicator lamp in the 00C9button lights
up.
X To deactivate: press the00C9button.
The indicator lamp in the 00C9button goes
out. The previously selected settings are
restored.
When you activate MAX COOL, climate control
switches to the following functions: R maximum cooling
R maximum airflow
R air-recirculation mode on Removing condensation from the win-
dows
Windows fogged up on the inside X
Activate the 005Aor0056 cooling with air
dehumidification function.
X Activate automatic mode 0058.
X If the windows continue to fog up, activate the
"windshield defrosting" function
(Y page 122).
i You should only select this setting until the
windshield is clear again.
Windows fogged up on the outside X
Activate the windshield wipers.
X Press the 008Fbutton repeatedly until the
009C or009B symbol appears in the display.
i You should only select this setting until the
windshield is clear again.
i If you clean the windows regularly, they do
not fog up so quickly. Rear window defroster
General notes The rear window defroster has a high current
draw. You should therefore switch it off as soon
as the rear window is clear. Otherwise, the rear
window defroster switches off automatically
after several minutes.
If the battery voltage is too low, the rear window defroster may switch off. 122
Operating the climate control systemsClimate control

Activating/deactivating
X
Turn the SmartKey to position 0048in the igni-
tion lock (Y page 127).
X Press the 006Cbutton.
The indicator lamp in the 006Cbutton lights
up or goes out.
Problems with the rear window defroster Problem
Possible causes/consequences and
0050
0050Solutions The rear window
defroster has deactiva-
ted prematurely or can-
not be activated. The battery has not been sufficiently charged.
X Switch off any consumers that are not required, e.g. reading lamps,
interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window defroster can be activated again. Switching air-recirculation mode
on/off
General notes You can deactivate the flow of fresh air if
unpleasant odors are entering the vehicle from
outside. The air already inside the vehicle will
then be recirculated.
If you switch on air-recirculation mode, the win-
dows can fog up more quickly, in particular at
low temperatures. Only use air-recirculation
mode briefly to prevent the windows from fog-
ging up.
Activating/deactivating X
Turn the SmartKey to position 0048in the igni-
tion lock (Y page 127).
X To activate: press the0089button.
The indicator lamp in the 0089button lights
up.
i In the event of high pollution levels (3-zone
automatic climate control only) or at high out-
side temperatures, air-recirculation mode is
automatically activated. When air-recircula-
tion mode is activated automatically, the indi-
cator lamp in the 0089button is not lit.
Outside air is added after about 30 minutes.
X To deactivate: press the0089button.
The indicator lamp in the 0089button goes
out. i
Air-recirculation mode deactivates auto-
matically:
R after approximately five minutes at outside
temperatures below approximately 41 ‡
(5 †)
R after approximately five minutes if cooling
with air dehumidification is deactivated
R after approximately 30 minutes at outside
temperatures above approximately 41 ‡
(5 †) if the "Cooling with air dehumidifica-
tion" function is activated Switching the residual heat on or off
General notes The residual heat function is only available on
vehicles for Canada.
It is possible to make use of the residual heat of
the engine to continue heating the stationary
vehicle for up to 30 minutes after the engine has been switched off. The heating time depends on
the set interior temperature.
Activating/deactivating X
To activate: press the004Bor0056 button.
The indicator lamp in the 004Bor0056 button
lights up.
i The blower will run at a low speed regardless
of the airflow setting. Operating the climate control systems
123Climate control

obstacles or stationary vehicles. If, for exam-
ple, the detected vehicle turns a corner and
an obstacle or stationary vehicle is revealed,
Active Distance Assist DISTRONIC will not
brake for them.
R Crossing vehicles: Active Distance Assist
DISTRONIC may mistakenly detect vehicles
that are crossing your lane. Activating Active
Distance Assist DISTRONIC at, for example, a traffic light with crossing traffic could cause
your vehicle to pull away at the wrong time.
In such situations, brake if necessary. Active
Distance Assist DISTRONIC will then be deacti-
vated.
Active Distance Assist DISTRONIC with
Active Steering Assist General notes
Active Distance Assist DISTRONIC with Active
Steering Assist aids you in keeping the vehicle in the center of the driving lane by means of mod-
erate steering interventions in a speed range
from 0 - 125 mph (0 - 200 km/h).
It monitors the area in front of your vehicle by
means of camera system 0043at the top of the
windshield.
In a speed range from 0 - 37 mph (0 - 60 km/h),
the advanced automatic pulling away function
focuses on the vehicle in front, taking into
account lane markings, e.g. when following vehi-
cles in a traffic jam.
At speeds of more than 37 mph (60 km/h),
Active Steering Assist focuses on clear lane
markings (left and right), focusing on the vehicle
in front only if clear lane markings are not pres-
ent.
If these conditions are not present, Active Steer-
ing Assist cannot provide assistance. Active Distance Assist DISTRONIC must be
active in order for the function to be available.
Important safety notesActive Distance Assist DISTRONIC with Active
Steering Assist can neither reduce the risk of an
accident if you fail to adapt your driving style,
nor override the laws of physics. It cannot take
into account road, weather or traffic conditions. Active Distance Assist DISTRONIC with Active
Steering Assist is only an aid. You are responsi- ble for the distance to the vehicle in front, for
vehicle speed, for braking in good time and for
staying in your lane.
Active Distance Assist DISTRONIC with Active
Steering Assist does not detect road and traffic
conditions and does not detect all road users. If you are following a vehicle which is driving
towards the edge of the road, your vehicle could
come into contact with the curb or other road
boundaries. Be particularly aware of other road
users, e.g. cyclists, that are directly next to your
vehicle.
Obstacles such as traffic pylons on the lane or
projecting out into the lane are not detected.
An inappropriate steering intervention, e.g. after intentionally driving over a lane marking, can be
corrected at any time if you steer slightly in the
opposite direction.
Active Distance Assist DISTRONIC with Active
Steering Assist cannot continuously keep your
vehicle in lane. In some cases, the steering
intervention is not sufficient to bring the vehicle back to the lane. In such cases, you must steer the vehicle yourself to ensure that it does not
leave the lane.
The support provided by the system can be
impaired if:
R there is poor visibility, e.g. due to insufficient
illumination of the road, or due to snow, rain, fog or heavy spray
R there is glare, e.g. from oncoming traffic, the
sun or reflection from other vehicles (e.g. if
the road surface is wet)
R the windshield is dirty, fogged up, damaged or
covered, for instance by a sticker, in the vicin-ity of the camera
R there are no or several unclear lane markings
for one lane, e.g. roadworks
R the lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow 164
Driving systemsDriving and parking

the vehicle has exited the parking space com-
pletely. This is useful, for example when you
recognize that it is already possible to pull out of
the parking space.
Canceling Active Parking Assist X
Stop the movement of the multifunction
steering wheel or steer yourself.
Active Parking Assist will be canceled at once.
The Active Parking Assist Canceled
Active Parking Assist Canceled
message appears on the multifunction dis-
play.
or X Press the Parking Assist PARKTRONIC button
(Y page 175).
Parking Assist PARKTRONIC is switched off
and Active Parking Assist is immediately can-
celed. The Active Parking Assist Can‐
Active Parking Assist Can‐
celed celed message appears on the multifunction
display.
Active Parking Assist is canceled automatically
if: R the electric parking brake is engaged
R transmission position 005Dis selected
R parking using Active Parking Assist is no lon-
ger possible
R you are driving faster than 6 mph (10 km/h)
R a wheel spins, ESP ®
intervenes or fails. The
00E5 warning lamp lights up in the instrument
cluster
A warning tone sounds. The parking symbol dis-
appears and the multifunction display shows the
Active
Active Parking Parking Assist
AssistCanceled
Canceled message.
When Active Parking Assist is canceled, you
must steer and brake again yourself.
If a system malfunction occurs, the vehicle is
braked to a standstill. To drive on, depress the
accelerator again. Rear view camera
General notes Rear view camera
0043is an optical parking and
maneuvering aid. It shows the area behind your
vehicle with guide lines in the multimedia sys-
tem.
The area behind the vehicle is displayed as a
mirror image, as in the rear-view mirror.
i The text shown in the multimedia system
display depends on the language setting. The
following are examples of rear view camera
displays in the multimedia system.
Important safety notes The rear view camera is only an aid. It is not a
replacement for your attention to your immedi-
ate surroundings. You are always responsible
for safe maneuvering and parking. Make sure
that there are no persons, animals or objects in
the maneuvering area while maneuvering and
parking in parking spaces.
Under the following circumstances, the rear
view camera will not function, or will function in
a limited manner:
R if the trunk lid is open
R if there is heavy rain, snow or fog
R at night or in very dark places
R if the camera is exposed to very bright light
R if the surroundings are lit by fluorescent light
or LED lighting
The display may flicker
R if there is a sudden change in temperature,
e.g. when driving into a heated garage in win-
ter 180
Driving systemsDriving an
d parking

The cameras cover the immediate surroundings
of the vehicle. The 360° camera assists you, for
instance when parking or at exits with reduced
visibility.
You can show pictures from the 360° camera in full-screen mode or in seven different split-
screen views on the multimedia system display.
A split-screen view also includes a top view of
the vehicle. This view is calculated from the data supplied by the installed cameras (virtual cam-
era).
The six split-screen views are:
R Top view and picture from the rear view cam-
era (130° viewing angle)
R Top view and image from the front camera
(130° viewing angle without displaying the
maximum steering wheel angle)
R Top view and enlarged rear view
R Top view and enlarged front view
R Top view and trailer view (vehicles with trailer
tow hitch)
R Top view and rear-view images from the exte-
rior mirror cameras (rear wheel view)
R Top view and forward-view images from the
exterior mirror cameras (front wheel view)
When the function is active and you shift the
transmission from 005Bor005E to005C, the dynamic
guide lines are hidden.
When you shift between transmission positions 005B and 005E, you see the previously selected front
or rear view.
Distances measured by Parking Assist
PARKTRONIC will also be optically displayed:
R in split screen view as red or yellow brackets
around the vehicle icon in the top view, or
R at the bottom right as red or yellow brackets
around the vehicle symbol in full-screen mode
The line thickness and color of the brackets
show how far the vehicle is away from an object:
R yellow brackets with thin lines: Parking Assist
PARKTRONIC is active
R yellow brackets with normal lines: an object is
present in close range of the vehicle
R red line: an object is present in the immediate
close range of the vehicle i
Camera
0043in the rear is integrated into the
emblem and thus protected from dust and
dirt. The emblem opens when the 360° cam-
era is activated. Observe the notes on clean-
ing (Y page 305).
Important safety notes The 360°camera is only an aid and may show a
distorted view of obstacles, show them incor-
rectly or not at all. The 360°camera is not a
substitute for attentive driving.
You are always responsible for safe maneuver-
ing and parking. Make sure that there are no
persons, animals or objects in the maneuvering area while maneuvering and parking in parking
spaces.
You are always responsible for safety and must
continue to pay attention to your immediate
surroundings when parking and maneuvering.
This applies to the areas behind, in front of and
beside the vehicle. You could otherwise endan-
ger yourself and others.
The 360° camera will not function or will func-
tion in a limited manner in the following situa-
tions:
R the doors are open
R the exterior mirrors are folded in
R the tailgate is open
R in heavy rain, snow or fog
R at night or in very dark places
R the cameras are exposed to very bright light
R the area is lit by fluorescent bulbs or LED
lighting (the display may flicker)
R there is a sudden change in temperature,
such as when driving into a heated garage in
winter
R the camera lenses are dirty or covered
R the vehicle components in which the cameras
are installed are damaged In this event, have Driving systems
185Driving and parking Z

Towing a trailer
When you attach a trailer, make sure you have
correctly established the electrical connection.
This can be accomplished by checking the trailer
lighting. In this event, Blind Spot Assist is deac- tivated. The warning lamp lights up yellow in the
exterior mirrors and the Blind Spot Assist Blind Spot Assist
Not Available When Towing a Trailer Not Available When Towing a Trailer
See Operator's Manual See Operator's Manual message appears in
the multifunction display.
i You can deactivate the warning lamps in the
exterior mirrors.
To do so, switch off Blind Spot Assist when:
R the SmartKey is in position 0048in the igni-
tion lock
R the engine is not running
Lane Keeping Assist General notes
0043
Lane Keeping Assist camera
Lane Keeping Assist monitors the area in front of
your vehicle with camera 0043, which is mounted
at the top of the windshield. Lane Keeping Assist
detects lane markings on the road and can warn
you before you leave your lane unintentionally.
This function is available in the range between
40 mph and 120 mph (60 km/h and 200 km/h).
A warning may be given if a front wheel passes
over a lane marking. It will warn you by means of intermittent vibration in the steering wheel for
up to 1.5 second s.
Im portant safety notes G
WARNING
Lane Keeping Assist cannot always clearly
detect lane markings. In such cases, Lane Keeping Assist can:
R give an unnecessary warning
R not give a warning
There is a risk of an accident.
Always pay particular attention to the traffic
situation and keep within the lane, especially
if Lane Keeping Assist alerts you. G
WARNING
The Lane Keeping Assist warning does not
return the vehicle to the original lane. There is a risk of an accident.
You should always steer, brake or accelerate
yourself, in particular if warned by Lane Keep-ing Assist.
If you fail to adapt your driving style, Lane Keep- ing Assist can neither reduce the risk of an acci-
dent nor override the laws of physics. Lane
Keeping Assist cannot take into account the
road, traffic and weather conditions. Lane Keep- ing Assist is merely an aid. You are responsible
for the distance to the vehicle in front, for vehi-
cle speed, for braking in good time and for stay-
ing in your lane.
The Lane Keeping Assist does not keep the vehi- cle in the lane.
The system may be impaired or may not function if:
R there is poor visibility, e.g. due to insufficient
illumination of the road, or due to snow, rain,fog or heavy spray
R there is glare, e.g. from oncoming traffic, the
sun or reflection from other vehicles (e.g. if
the road surface is wet)
R the windshield is dirty, fogged up, damaged or
covered, for instance by a sticker, in the vicin-
ity of the camera
R there are no or several unclear lane markings
for one lane, e.g. roadworks
R the lane markings are worn away, dark or cov-
ered up, e.g. by dirt or snow
R the distance to the vehicle in front is too short
and thus the lane markings cannot be detec-
ted
R the lane markings change quickly, e.g. lanes
branch off, cross one another or merge Driving systems
193Driving and parking Z