
162Infotainment system● Say "Help" or read the example
commands on the screen.
● The voice prompt can be interrupted by pressing w again.
● Wait for the beep and the green speech recognition symbol then
speak the command naturally,
not too fast, not too slow. Use short and direct commands.
Note
If the system provides several
suggestions, the selection is to be
done manually and the speech
recognition symbol flashes red and green when scrolling the list.
In case of complex commands or
when information is missing, the
system starts a dialogue sequence.
When searching for a "Point of
Interest", only major chains may be
selected by name. Chains are
businesses with at least 20 locations.
For other POIs, say the name of a
category, e.g. "Restaurants",
"Shopping centres", or "Hospitals".Help command
After saying " Help", the help prompt
for the current screen is read aloud.
Additionally, the prompt is displayed
on the screen.
To interrupt the help prompt, press w.
A beep is heard. A command can be
said again.
Voice pass-thru application
Activating speech recognition
Press and hold s on the steering
wheel until a speech recognition icon
is displayed.
Adjusting the volume of voice
prompts
Turn ) on the control panel or press
À or Á on the steering wheel
upwards or downwards during a voice prompt.
Deactivating speech recognition
Press n on the steering wheel. The
speech recognition session is ended.Phone
General information
Not every mobile phone fully supports
the phone function. Therefore,
deviations from the range of functions
described below are possible.
Phone main menu ● Favourites : List of favourite
contacts.
● Keypad : Phone numbers can be
entered and dialed.
● Recent : List of recent phone
calls.
● Contacts : List of contacts.
● Phones : Overview of connected
and disconnected phones.

Driving and operating177Driving and
operatingDriving hints ............................... 178
Control of the vehicle ...............178
Steering ................................... 178
Starting and operating ...............178
New vehicle running-in ............178
Power button ........................... 179
Retained power off ..................180
Starting the engine ..................180
Overrun cut-off ........................ 182
Stop-start system ....................182
Parking .................................... 184
Engine exhaust .......................... 185
Exhaust filter ............................ 185
Catalytic converter ...................186
AdBlue ..................................... 187
Automatic transmission ..............189
Manual transmission ..................194
Drive systems ............................ 194
All-wheel drive ......................... 194
Brakes ........................................ 195
Antilock brake system .............195
Parking brake .......................... 196Brake assist............................. 197
Hill start assist ......................... 197
Ride control systems .................198
Traction Control system ..........198
Electronic Stability Control ......199
Interactive driving system ........201
Driver assistance systems .........203
Cruise control .......................... 203
Speed limiter ........................... 204
Adaptive cruise control ............206
Forward collision alert .............216
Following distance indication ...219
Active emergency braking .......220
Front pedestrian protection .....223
Parking assist .......................... 225
Side blind spot alert .................231
Lane change alert ....................233
Panoramic view system ...........234
Rear view camera ...................237
Rear cross traffic alert .............238
Traffic sign assistant ................240
Lane keep assist .....................244
Fuel ............................................ 246
Fuel for petrol engines .............246
Fuel for diesel engines ............248
Refuelling ................................ 248
Trailer hitch ................................ 250
General information .................250Driving characteristics and
towing tips .............................. 251
Trailer towing ........................... 251
Towing equipment ...................252
Trailer stability assist ...............253

Driving and operating179Power button
Electronic key must be inside the
vehicle.
Accessory power mode
Press Engine Start/Stop once without
operating clutch or brake pedal. The yellow LED in the button illuminates.
Steering wheel lock is released and
some electrical functions are
operable, ignition is off.Ignition on power mode
Press and hold Engine Start/Stop for
six seconds without operating clutch
or brake pedal. The green LED in the button illuminates, diesel engine ispreheating. Control indicators
illuminate and most electrical
functions are operable.Engine start
Press Engine Start/Stop briefly while:
● manual transmission: operating clutch pedal,
● automatic transmission: operating brake pedal with
selector lever in P or N.
Starting the engine 3 180.Ignition off
Press Engine Start/Stop briefly when
Autostop is activated or when engine is running and vehicle is stationary.
Automatic transmission: apply the
parking brake and engage P.
Press Engine Start/Stop briefly
without operating clutch or brake pedal when in ignition on power
mode.
Some functions remain active until
driver's door is opened, provided the
ignition was on previously.Emergency engine shut off during
driving
Press Engine Start/Stop for more
than two seconds or press twice
briefly within five seconds 3 180.
Steering wheel lock The steering wheel lock activates
automatically when:
● The vehicle is stationary.
● The ignition has been switched off.
● The driver's door is opened.
To release steering wheel lock, open
and close driver's door and switch on accessory mode or start the engine
directly.9 Warning
If the vehicle battery is discharged,
the vehicle must not be towed,
tow-started or jump-started as the
steering wheel lock cannot be
disengaged.

184Driving and operatingRestart of the engine by the stop-
start system
The selector lever must be in neutralto enable an automatic restart.
If one of the following conditions
occurs during an Autostop, the
engine will be restarted automatically
by the stop-start system:
● The stop-start system is manually deactivated.
● The bonnet is opened.
● The driver's seat belt is unfastened and the driver's door
is opened.
● The engine temperature is too low.
● The charging level of the vehicle battery is below a defined level.
● The brake vacuum is not sufficient.
● The vehicle is driven at least at walking speed.
● The climate control system requests an engine start.
● The air conditioning is manually switched on.If the bonnet is not fully closed, awarning message is displayed in the
Driver Information Centre.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop during the restart might be noticeable.
Parking9 Warning
● Do not park the vehicle on an
easily ignitable surface. The
high temperature of the
exhaust system could ignite the
surface.
● Always apply the parking brake. Pull switch m for
approx. one second and check
if the control indicator m
illuminates.
The electric parking brake is applied when control indicator
m illuminates 3 107.
● Switch off the engine.
● If the vehicle is on a level surface or uphill slope, engage
first gear or set the selector
lever to position P before
switching off ignition. On an
uphill slope, turn the front
wheels away from the kerb.
If the vehicle is on a downhill
slope, engage reverse gear or
set the selector lever to position P before switching off ignition.
Turn the front wheels towards
the kerb.
● Close the windows and the sunroof.
● Switch off ignition with power button. Turn the steering wheel
until the steering wheel lock is
felt to engage.
● Lock the vehicle with button on the door handle.
● Activate the anti-theft alarm system.
● The engine cooling fans may run
after the engine has been
switched off 3 256.

Driving and operating189The vehicle must be parked on a level
surface.
The filler neck for AdBlue is located
behind the fuel filler flap, which is located at right rear side of the
vehicle.
The fuel filler flap can only be opened if the vehicle is unlocked.
1. Remove key from ignition switch.2. Close all doors to avoid ammonia fumes entering the interior of the
vehicle.
3. Release the fuel filler flap by pushing the flap 3 248.
4. Unscrew protective cap from the
filler neck.
5. Open AdBlue canister.
6. Mount one end of the hose on the
canister and screw the other end
on the filler neck.
7. Lift the canister until it is empty, or
until the flow from the canister has stopped. This can take up to
five minutes.
8. Place the canister on the ground to empty the hose, wait
15 seconds.
9. Unscrew the hose from the filler neck.
10. Mount the protective cap and turn
clockwise until it engages.
Note
Dispose of AdBlue canister
according to environmental
requirements. To reuse the hose
flush it with clear water after usage.Automatic transmission
The automatic transmission permits
automatic gear shifting (automatic
mode) or manual gear shifting
(manual mode).
Manual shifting is possible in manual
mode by tapping the selector lever to + or - or pulling the steering wheel
paddles.
Transmission display
Illustrations show different versions.

Driving and operating191Do not accelerate while engaging a
gear. Never depress the accelerator
pedal and brake pedal at the same
time.
When a gear is engaged, the vehicle
begins to creep when the brake is
released.
Engine braking To utilise the engine braking effect,
select a lower gear in good time when
driving downhill, see manual mode.
Rocking the vehicle
Rocking the vehicle is only
permissible if the vehicle is stuck in
sand, mud or snow. Move the selector
lever between D and R in a repeat
pattern. Do not race the engine and
avoid sudden acceleration.
Parking
Apply the parking brake and engage P .Manual mode
Selector lever
Move selector lever out of position D
towards the left in position M.
Manual mode M can be activated
from position D in each driving
situation and speed.
Tap selector lever upwards + to shift
to a higher gear.
Tap the selector lever downwards - to
shift to a lower gear.
The selected gear is indicated in the
instrument cluster.
Steering wheel paddles
Move selector lever out of position D
towards the left in position M.
Manual mode M can be activated
from position D in each driving
situation and speed.
Pull steering wheel paddles to select
gears manually.
Pull right paddle + to shift to a higher
gear.
Pull left paddle - to shift to a lower
gear.
Multiple pulls allow gears to be
skipped.

192Driving and operatingThe selected gear is indicated in the
instrument cluster.
Temporary manual mode in drive
mode D
Manual paddle shifting is also
possible in automatic mode D. Upon
completion of manual shifting
operation, transmission changes to
automatic mode D after a defined
time.
To interrupt manual mode and return
to D, do one of the following:
● Press + paddle for 1 second.
● Move selector lever towards the left to manual mode and back toposition D.
If the vehicle is at a standstill and
engine is idling, the transmission will remain in temporary manual mode. It
changes to automatic mode when
accelerator pedal is operated for a
defined time, and no paddle shifting
at the steering wheel is performed.
General
If a higher gear is selected when
vehicle speed is too low, or a lower
gear when vehicle speed is too high,the shift is not executed. This can
cause a message in the Driver
Information Centre.
In manual mode, no automatic
shifting to a higher gear takes place
at high engine revolutions, except
activating the kickdown function.
Gear shift indication
The symbol R or S with a number
beside it is indicated when gear
shifting is recommended for fuel
saving reasons.
Shift indication appears only in
manual mode.
Electronic driving programmes ● When SPORT mode is engaged,
the vehicle shifts at higher engine
speeds (unless cruise control is
on). SPORT mode 3 201.
● Special programmes automatically adapt the shiftingpoints when driving up inclines or down hills.
● In snowy or icy conditions or on other slippery surfaces, the
electronic transmission controlenables the driver to manually
select first, second or third gear
for starting off.
Kickdown
Pressing down the accelerator pedal
beyond the kickdown detent will lead
to maximum acceleration even in manual mode. The transmission
shifts to a lower gear depending on
engine speed and shifts to a higher
gear at high engine revolutions.
Overheat protection
In the event of transmission-
overheating due to high outside
temperatures or sporty driving style, the torque and the maximum speed of
the engine can be temporarily
reduced.
Fault
In the event of a fault a vehicle
message is displayed in the Driver
Information Centre. Vehicle
messages 3 123.
6-gear automatic transmission:
electronic transmission control
enables only fourth gear; 8-gear
automatic transmission: electronic

Driving and operating1999Warning
Do not let this special safety
feature tempt you into taking risks
when driving.
Adapt speed to the road
conditions.
Control indicator b 3 108.
Deactivation
TC can be switched off when spinning of drive wheels is required: press t
briefly.
Control indicator k illuminates.
A status message appears in the
Driver Information Centre when TC is
deactivated.
When TC is deactivated, ESC
remains active but with higher control threshold.
TC is reactivated by pressing t again.
A status message pops up in the
Driver Information Centre when TC is
reactivated.
TC is also reactivated the next time
the ignition is switched on.
Fault
If there is a fault in the system the
control indicator b illuminates
continuously and a message appears
in the Driver Information Centre. The
system is not operational.
Have the cause of the fault remedied
by a workshop.
Electronic Stability Control
Electronic Stability Control (ESC)
improves driving stability when
necessary, regardless of the type of
road surface or tyre grip.
As soon as the vehicle starts to
swerve (understeer/oversteer),
engine output is reduced and the wheels are braked individually.
ESC operates in combination with the Traction Control system (TC). It
prevents the drive wheels from
spinning.
Torque distribution is a special
feature that allocates the torque to the drive wheels before the ESC
intervenes. When cornering, the
wheels on the inner curve are braked
individually. Additionally, engine
torque will be delivered to the drive
wheel on the outer curve. This
reduces the tendency of
understeering and improves traction
when cornering fast.