Lighting109Battery 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 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 interior 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 operating121Driving and
operatingDriving hints ............................... 122
Control of the vehicle ...............122
Steering ................................... 122
Starting and operating ...............122
New vehicle running-in ............122
Ignition switch positions ...........123
Power button ........................... 123
Starting the engine ..................124
Overrun cut-off ........................ 126
Stop-start system ....................126
Parking .................................... 128
Engine exhaust .......................... 129
Exhaust filter ............................ 129
Catalytic converter ...................130
AdBlue ..................................... 130
Automatic transmission ..............133
Transmission display ...............133
Gear selection ......................... 133
Manual mode ........................... 134
Electronic driving programmes 135
Fault ........................................ 135
Interruption of power supply ....135
Manual transmission ..................136Brakes........................................ 137
Antilock brake system .............137
Parking brake .......................... 138
Brake assist ............................. 138
Hill start assist ......................... 138
Ride control systems .................139
Electronic Stability Control and Traction Control system .........139
Driver assistance systems .........140
Cruise control .......................... 140
Speed limiter ........................... 143
Forward collision alert .............145
Active emergency braking .......147
Front pedestrian protection .....149
Parking assist .......................... 150
Advanced parking assist .........153
Side blind spot alert .................158
Panoramic view system ...........159
Rear view camera ...................162
Lane departure warning ..........163
Driver alert ............................... 164
Fuel ............................................ 166
Fuel for petrol engines .............166
Fuel for diesel engines ............166
Refuelling ................................ 167
Trailer hitch ................................ 169
General information .................169
Driving characteristics and towing tips .............................. 169Trailer towing........................... 170
Towing equipment ...................170
124Driving and operatingthe engine and ignition while
driving only when required in case of emergency.
Steering wheel lock
The steering wheel lock activates
automatically when:
● The vehicle is stationary.
● The ignition has been switched off.
To release steering wheel lock, open
and close driver's door and switch the ignition on power 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 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.
Hold the electronic key with buttons
outside at the marking on the steering column cover as shown in the
illustration.
Operate the clutch pedal, the brake
pedal and press Start/Stop. Release
the button after starting procedure begins.
This option is intended for
emergencies only. Replace the
electronic key battery as soon as
possible 3 22.
For unlocking or locking the doors,
see fault in radio remote control unit
or electronic key system 3 23.
Starting the engine
Vehicles with ignition switch
● Turn key to position 1.
● Move the steering wheel slightly to release the steering wheel
lock.
● Manual transmission: operate clutch and brake pedal.
● Automatic transmission: operate brake pedal and move selector
lever to P or N.
Driving and operating129approx. 30 seconds before
switching off, in order to protect
the turbocharger.
Notice
In the event of an accident with
airbag deployment, the engine is
switched off automatically if the
vehicle comes to a standstill within a
certain time.
In countries with extreme low
temperatures it may be necessary to park the vehicle without applied
parking brake. Make sure to park the
vehicle on a level surface.
Keys, locks 3 20.
Laying-up the vehicle for a long
period of time 3 175.
Engine exhaust9 Danger
Engine exhaust gases contain
poisonous carbon monoxide,
which is colourless and odourless and could be fatal if inhaled.
If exhaust gases enter the interior
of the vehicle, open the windows.
Have the cause of the fault
rectified by a workshop.
Avoid driving with an open load
compartment, otherwise exhaust
gases could enter the vehicle.
Exhaust filter
Automatic cleaning process
The exhaust filter system filters soot particles out of the exhaust gases.
The start of saturation of the exhaust
filter is indicated by the temporary
illumination of % or C ,
accompanied by a message in the
Driver Information Centre.
As soon as the traffic conditions
permit, regenerate the filter by driving at a vehicle speed of at least 40 mph
until the control indicator
extinguishes.
Notice
On a new vehicle, the first exhaust
filter regeneration operations may
be accompanied by a burning smell,
which is normal. Following
prolonged operation of the vehicle at very low speed or at idle, water
vapour can be emitted at the
exhaust on acceleration. This does
not affect the behaviour of the
vehicle or the environment.
Cleaning process not possible
If % or C stays on, accompanied
by an audible signal and a message,
this indicates that the exhaust filter
additive level is too low.
The reservoir must be topped-up
without delay. Seek the assistance of
a workshop.
130Driving and operatingCatalytic converter
The catalytic converter reduces the
amount of harmful substances in the
exhaust gases.Caution
Fuel grades other than those listed on pages 3 166, 3 225 could
damage the catalytic converter or
electronic components.
Unburnt fuel 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 preheater,
the emissions reduction at low
temperatures is ensured. The AdBlue
preheater works automatically.
Notice
Frozen and again liquefied AdBlue is usable without quality loss.
Level warnings
The AdBlue consumption is approx. 1.5 l per 600 miles. The consumption
can be higher depending on driving
behaviour (e.g. high load or towing).
Depending on the calculated range of AdBlue, different messages are
displayed in the Driver Information
Centre. The messages and the
restrictions are a legal requirement.
Driving and operating131The first possible warning message
appears at an AdBlue range below
1500 miles, shows up at each start
and each 190 miles range reduction:
Top up AdBlue: Starting impossible in
1500 mi
Additionally, control indicator Y
illuminates continuously and a chime
sounds with every message pop-up.
At an AdBlue range below 380 miles,
the following warning message is being displayed, shows up at each start and each 12 miles range
reduction:
Top up AdBlue: Starting impossible in 380 mi
Additionally, control indicator Y
flashes continuously and a chime sounds with every message pop-up.
Notice
In case of high AdBlue consumption,
the Driver Information Centre may
display this warning without the
previous warning stages.
The last warning level is entered
when the AdBlue tank is empty.
Restart of the engine is not possible.The following warning message is
being displayed and cannot be
dismissed:
Top up AdBlue: Starting impossible
Additionally, control indicator Y
flashes continuously and engine
cannot be restarted until AdBlue tank is being filled with at least 5 l.
High emission warnings If the exhaust emission rises above a
certain value, warnings similar to the
range warnings will be displayed in
the Driver Information Centre.
Requests to have the exhaust system checked and finally the
announcement of the prevention of
an engine restart are displayed.
These restrictions are a legal
requirement.
Consult a workshop for assistance.Refilling AdBlueCaution
Only use AdBlue that complies
with European standards
DIN 70 070 and ISO 22241-1.
Do not use additives.
Do not dilute AdBlue.
Otherwise the selective catalytic
reduction system could be
damaged.
Notice
Whenever a filling pump with a
nozzle for passenger cars is not
available at a filling station, use only
AdBlue bottles or canisters with a
sealed refill adapter for refilling, to
prevent splashback and overspill,
and in order to ensure that the fumes
from the tank are captured and do
not emerge. AdBlue in bottles or
canisters is available in many filling
Driving and operating1339. Unscrew the hose from the fillerneck.
10. Mount the protective cap and turn
clockwise until it engages.
Notice
Dispose of AdBlue canister
according to environmental
requirements. Hose can be reused
after flushing with clear water before AdBlue dries out.Automatic transmission
The automatic transmission permits
automatic gearshifting (automatic
mode) or manual gearshifting
(manual mode).
Manual shifting is possible in manual
mode by tapping the selector lever to + or - 3 134.
Transmission display
The mode or selected gear is shown
in the Driver Information Centre.
D and the number of the engaged
gear indicates automatic mode.
M and the number of the selected
gear indicates manual mode.
R indicates reverse gear.
N indicates neutral position.
P indicates park position.
Gear selection
Move the selector lever in the shifting
gate as shown in the illustration
above.
134Driving and operatingP:park position, wheels are locked,engage only when the vehicle is
stationary and the parking brake
is appliedR:reverse gear, engage only when
the vehicle is stationaryN:neutralD:automatic modeM:manual mode+:upshift in manual mode-:downshift in manual mode
The selector lever is locked in P and
can only be moved when the ignition
is on and the brake pedal is applied.
The engine can only be started with
the lever in position P or N. When
position N is selected, press the brake
pedal or apply the parking brake
before starting.
Do 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
slowly 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
Move selector lever out of position D
towards the left in position M.
Tap selector lever towards + to shift
to a higher gear.
Tap the selector lever towards - to
shift to a lower gear.
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.