Lighting139Lighting features
Centre console lighting Spotlight incorporated in the interior
lighting comes on when headlights
are switched on.
Entry lighting
Welcome lighting The following lights are switched on
for a short time by unlocking the
vehicle with the radio remote control:
● headlights
● tail lights
● number plate lights
● instrument panel light
● interior lights
Some functions are only operable
when it is dark outside to facilitate
locating the vehicle.
The lighting switches off immediately
when the ignition is switched on.
Starting off 3 18.This function can be activated or
deactivated in the vehicle
personalisation.
Select the relevant setting in Settings
I Vehicle in the Info Display.
Info Display 3 121.
Vehicle personalisation 3 124.
The settings can be saved for the key being used 3 25.
The following lights will additionally
switch on when the driver's door is
opened:
● illumination of some switches
● Driver Information Centre
● door pocket lights
Exit lighting The following lights switch on if the
key is removed from the ignition
switch:
● interior lights
● instrument panel light
They will switch off automatically after
a delay. This function works only in
the dark.Path lighting
Headlights, tail lights and number
plate lights illuminate the surrounding
area for an adjustable time after
leaving the vehicle.
ActivatingHalogen headlights
1. Switch off the ignition.
2. Remove the ignition key.
3. Open the driver's door.
4. Pull the indicator lever.
5. Close the driver's door.
If the driver's door is not closed, the
lights switch off after 2 minutes.
140LightingExit lighting is switched off
immediately if the indicator lever is
pulled while the driver's door is open.LED headlights
Path lighting is activated, when the
ignition is switched off and the driver's door is opened.
This function can be activated or
deactivated in the vehicle
personalisation.
Select the relevant setting in Settings
I Vehicle in the Info Display.
Info Display 3 121.
Vehicle personalisation 3 124.
The settings can be saved for the key being used 3 25.
Battery discharge protection
Vehicle battery state of charge
function
The function guarantees longest
vehicle battery life via a generator
with controllable power output and
optimised power distribution.
To prevent discharge of the vehicle
battery when driving, the following
systems are reduced automatically in two stages and finally switched off:
● auxiliary heater
● heated rear window and mirrors
● heated steering wheel
● heated mirrors
● heated seats
● fan
In the second stage, a message
which confirms the activation of the
vehicle battery discharge protection
will be displayed in the Driver
Information Centre.
Switching off electric lights
To prevent discharge of the vehicle
battery when the ignition is switched
off, some interior lights are switched
off automatically after some time.
Driving and operating151Driving and
operatingDriving hints ............................... 152
Control of the vehicle ...............152
Steering ................................... 152
Starting and operating ...............152
New vehicle running-in ............152
Ignition switch positions ...........152
Power button ........................... 153
Retained power off ..................155
Starting the engine ..................155
Overrun cut-off ........................ 157
Stop-start system ....................157
Parking .................................... 160
Engine exhaust .......................... 161
Exhaust filter ............................ 161
Catalytic converter ...................163
AdBlue ..................................... 163
Automatic transmission ..............166
Transmission display ...............166
Gear selection ......................... 167
Manual mode ........................... 168
Electronic driving programmes 168
Fault ........................................ 168
Interruption of power supply ....169Manual transmission ..................169
Brakes ........................................ 170
Antilock brake system .............170
Parking brake .......................... 171
Brake assist ............................. 172
Hill start assist ......................... 172
Ride control systems .................173
Traction Control system ..........173
Electronic Stability Control ......174
Driver assistance systems .........176
Cruise control .......................... 176
Speed limiter ........................... 177
Adaptive cruise control ............179
Forward collision alert .............187
Following distance indication ...189
Active emergency braking .......190
Front pedestrian protection .....193
Parking assist .......................... 195
Side blind spot alert .................203
Rear view camera ...................204
Traffic sign assistant ................206
Lane keep assist .....................210
Fuel ............................................ 212
Fuel for petrol engines .............212
Fuel for diesel engines ............214
Refuelling ................................ 214
Trailer hitch ................................ 216
General information .................216Driving characteristics and
towing tips .............................. 217
Trailer towing ........................... 217
Towing equipment ...................218
Trailer stability assist ...............221
152Driving and operatingDriving hints
Control of the vehicle
Never coast with engine not
running
Many systems will not function in this situation ( e.g. brake servo unit, power
steering). Driving in this manner is a
danger to yourself and others.
All systems function during an
Autostop.
Stop-start system 3 157.
Idle boost
If charging of the vehicle battery is
required due to battery condition, the
power output of the generator must
be increased. This will be achieved by an idle boost which may be audible.
A message appears in the Driver
Information Centre.
Pedals
To ensure the pedal travel is
uninhibited, there must be no mats in
the area of the pedals.Use only floor mats, which fit properly and are fixed by the retainers on the
driver side.
Steering If power steering assist is lost
because the engine stops or due to a system malfunction, the vehicle can
be steered but may require increased
effort.Starting and operating
New vehicle running-in Do not brake unnecessarily hard for
the first few journeys.
During the first drive, smoke may
occur because of wax and oil
evaporating off the exhaust system.
Park the vehicle in the open for a
while after the first drive and avoid
inhaling the fumes.
During the running-in period, fuel and engine oil consumption may be
higher.
Additionally, the cleaning process of
the exhaust filter may take place more
often.
Exhaust filter 3 161.
Ignition switch positions
Turn key:
154Driving and operatingpreheating. 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 3 155.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 shut off during driving
Press Engine Start/Stop for longer
than 2 seconds or press twice briefly
within 5 seconds 3 155.
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.
Operation on vehicles with
electronic key system in case of
failure
If either the electronic key fails or the
battery of the electronic key is weak,
the Driver Information Centre may
display No Remote Detected or
Replace Battery in Remote Key when
you try to start the vehicle.
Place the electronic key solely
centred in the transmitter area in
longitudinal direction flat with buttons
upside as shown in the illustration.
Illustrations show different versions.
160Driving and operatingOn vehicles with automatic
transmission, the selector lever must
be in D to enable an automatic restart.
The engine will be restarted
automatically by the stop-start
system, if one of the following
conditions occurs during an Autostop:
● The stop-start system is manually deactivated.
● The bonnet is opened.
● The driver's seat belt is unfastened and / or 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 desired compartmenttemperature does not match theactual temperature.
● The air conditioning is manually switched on.
If the bonnet is not fully closed, a
warning 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.
Note
If a trailer or a bike carrier is
attached, early Autostop and late
restart is deactivated.
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. Activate the manual
parking brake without pressingthe release button. Apply as
firmly as possible on a downhill slope or uphill slope. Depress
brake pedal at the same time to
reduce operating force.
For vehicles with electric
parking brake, pull switch m for
a minimum of 1 second until
control indicator m illuminates
constantly and electric parking
brake is applied 3 110.
● 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
removing the ignition key or
switching off ignition on
vehicles with power button. 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 removing the ignition
key or switching off ignition on
162Driving and operatingAutomatic cleaning process
The exhaust filter system filters soot
particles out of the exhaust gases.
The system includes a self-cleaning
function that runs automatically
during driving without any notification.
The filter is cleaned by periodically
burning off the soot particles at high
temperature. This process takes
place automatically under set driving
conditions and may take up to
25 minutes. Typically it needs
between 7 and 12 minutes. Autostop
is not available and fuel consumption may be higher during this period. The
emission of smells and smoke during
this process is normal.
System requires cleaning
Under certain conditions, e.g. driving
short distances, the system cannot
clean itself automatically.
If cleaning of the filter is required and if previous driving conditions did not
enable automatic cleaning, it will be
indicated by a warning message in
the Driver Information Centre.A warning message appears when
exhaust filter is full. Start cleaning
process as soon as possible.
A warning message also appears
when exhaust filter has reached the
maximum filling level. Start cleaning
process immediately to avoid
damage to the engine.
Activate self-cleaning process
Cleaning process is completed more
quickly at high engine speeds and
loads. Therefore, drive in lower gears
than normal, and use manual gear
selection on vehicles with automatic
transmission. Usage of electrical consumers like air conditioning and
heated windows to increase engine
load supports cleaning process.Caution
If possible, do not interrupt
cleaning process. Drive until
cleaning is completed to avoid the
need for service or repair by a
workshop.
Vehicles with petrol engine
To activate cleaning process,
continue driving, keep engine speed
above 2500 rpm. Shift down if
necessary.
Drive dynamically at different engine
speeds. Use engine brake for
deceleration, if possible.
Keep on driving until self-cleaning
operation is complete and the display
message disappears.Vehicles with diesel engine
To activate cleaning process,
continue driving, keep engine speed
above 2000 rpm, ideally and
continuously around 2500 rpm. Shift
down if necessary.
Keep on driving until self-cleaning
operation is complete and the display message disappears.
Driving and operating163Cleaning process not possibleIf cleaning is not possible for any
reason, control indicator Z
illuminates and a warning message
appears in the Driver Information
Centre. Engine power may be
reduced. Seek the assistance of a
workshop immediately.
Catalytic converter The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.Caution
Fuel grades other than those listed on pages 3 212, 3 280 could
damage the catalytic converter or
electronic components.
Unburnt petrol will overheat and
damage the catalytic converter.
Therefore avoid excessive use of the starter, running the fuel tank
dry and starting the engine by
pushing or towing.
In the event of misfiring, uneven
engine running, a reduction in engine performance or other unusual
problems, have the cause of the fault
rectified by a workshop as soon as
possible. In an emergency, driving
can be continued for a short period,
keeping vehicle speed and engine
speed low.
AdBlue
General information
The selective catalytic reduction
(BlueInjection) is a method to
substantially reduce the nitrogen
oxides in the exhaust emission. This
is achieved by injecting a Diesel
Exhaust Fluid (DEF) into the exhaust
system. The ammonia released by
the fluid reacts with nitrous gases
(NO x) from the exhaust and turns it
into nitrogen and water.
The designation of this fluid is
AdBlue ®
. It is a non-toxic, non-
flammable, colourless and odourless
fluid which consists of 32% urea and
68% water.9 Warning
Avoid contact of your eyes or skin
with AdBlue.
In case of eye or skin contact,
rinse off with water.
Caution
Avoid contact of the paintwork with AdBlue.
In case of contact, rinse off with water.
AdBlue freezes at a temperature of
approx. -11 °C. As the vehicle is
equipped with an AdBlue pre-heater,
the emissions reduction at low
temperatures is ensured. The AdBlue
pre-heater works automatically.