Driving and operating157Emergency shut off during driving
Press Engine Start/Stop for longer
than 2 seconds or press twice briefly
within 5 seconds 3 158.
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.
Open the centre console storage area by lifting up the armrest. Place the
electronic key in the transmitter
pocket.
Other objects, e.g. other keys,
transponder, tags, coins etc. must be
removed from the pocket.
Depress the clutch pedal (manual
transmission) or the brake pedal
(automatic transmission) and press
Engine Start/Stop .
To switch off the engine, press
Engine Start/Stop again. Remove the
electronic key from the transmitter
pocket.
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 24.
Retained power off
The following electronic systems can
work until the driver's door is opened
or for 10 minutes after the ignition is
switched off:
● power windows
● sunroof
● power outlets
Driving and operating169The ignition key can only be removed
when the selector lever is in position
P .
Manual mode
Selector lever
Move selector lever out of position D
towards the left to select manual
mode.
Tap selector lever
forwards <:shift to a higher gearbackwards ]: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 to select manual
mode.
Pull steering wheel paddles to select
gears manually
right
paddle <:pull briefly to shift
one gear upleft
paddle ]:pull briefly to shift one
gear down, multiple
pulls allows gears to be
skipped
The 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, 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,
170Driving and operatingthe 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.
Gear shift indication
The symbol R with a number below it
is indicated when gearshifting is
recommended for fuel saving
reasons.
Shift indication appears only in
manual mode.
Electronic driving programmes
● Following a cold start, the operating temperature
programme increases engine
speed to quickly bring the
catalytic converter to the required
temperature.
● The automatic neutral shift function automatically shifts to
idling when the vehicle is stopped with a forward gear engaged andthe brake pedal is pressed.● When SPORT mode is engaged,
the vehicle shifts at higher engine speeds (unless cruise control is
on). SPORT mode 3 177.
● Special programmes automatically adapt the shifting
points when driving up inclines or
down hills.
● When starting off in snowy or icy conditions or on other slippery
surfaces, the electronic
transmission control selects a
higher gear automatically.
Kickdown If the accelerator pedal is pressed
down completely in automatic mode,
the transmission shifts to a lower gear
depending on engine speed.
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 3 119.
The transmission no longer shifts automatically. Continued travel is
possible with manual shifting.
Only the highest gear is available.
Depending on the fault, 2nd gear may also be available in manual mode.
Shift only when vehicle is stationary.
Have the cause of the fault remedied
by a workshop.
Interruption of power supply
In the event of an interruption of
power supply, the selector lever
cannot be moved out of the P
position. The ignition key cannot be
removed from the ignition switch.
If the vehicle battery is discharged,
start the vehicle using jump leads
3 265.
If the vehicle battery is not the cause
of the fault, release the selector lever.
1. Apply parking brake.
Driving and operating175Functionality check
When the vehicle is not moving, the
electric parking brake might be
applied automatically. This is done to
check the system.
Fault
Failure mode of electric parking brake
is indicated by control indicator j and
by a vehicle message which is
displayed in the Driver Information Centre. Vehicle messages 3 119.
Apply electric parking brake: pull and hold switch m for more than
5 seconds. If control indicator m
illuminates, electric parking brake is
applied.
Release electric parking brake: push and hold switch m for more than
2 seconds. If control indicator m
extinguishes, electric parking brake is released.
Control indicator m flashes: electric
parking brake is not fully applied or released. When continuously
flashing, release electric parking
brake and retry applying.Brake assist
If brake pedal is depressed quickly
and forcefully, maximum brake force
is automatically applied.
Operation of brake assist might
become apparent by a pulse in the
brake pedal and a greater resistance when depressing the brake pedal.
Maintain steady pressure on the
brake pedal as long as full braking is
required. Maximum brake force is
automatically reduced when brake
pedal is released.
Hill start assist The system helps prevent unintendedmovement when driving away on
inclines.
When releasing the foot brake after
stopping on an incline, brakes remain on for further two seconds. Brakes
release automatically as soon as the
vehicle begins to accelerate.
The hill start assist is not active during
an Autostop.
Stop-start system 3 159.Ride control systems
Traction Control system
The Traction Control system (TC) is a component of the Electronic Stability
Control.
TC improves driving stability when
necessary, regardless of the type of
road surface or tyre grip, by
preventing the drive wheels from
spinning.
As soon as the drive wheels starts to
spin, engine output is reduced and
the wheel spinning the most is braked
individually. This considerably
improves the driving stability of the
vehicle on slippery road surfaces.
TC is operational as soon as control
indicator b extinguishes.
When TC operates b flashes.
Driving and operating177Deactivation
ESC and TC can be deactivated:● hold b pressed for min.
five seconds: TC and ESC are
deactivated, k and n illuminate
and status messages appear in
the Driver Information Centre.
● to deactivate only Traction control system press button b
briefly: TC is inactive but ESC
remains active, k illuminates. A
status message appears in the
Driver Information Centre when
TC is deactivated.
If the vehicle comes into threshold
with deactivated ESC, the system will
reactivate ESC for the time duration
of the threshold, when the brake
pedal is depressed once.
ESC is reactivated by pressing b
again. If the TC system was
previously disabled, both TC and
ESC are reactivated. k and n
extinguishes when TC and ESC are reactivated.
ESC 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.Interactive driving system
Flex RideFlex Ride driving system allows the
driver to select between three driving
modes:
● SPORT mode: press SPORT,
LED illuminates.
● TOUR mode: press TOUR, LED
illuminates.
● NORMAL mode: neither SPORT
nor TOUR is pressed, no LED
illuminates.
Deactivate SPORT mode and TOUR
mode by pressing corresponding
button once more.
In each driving mode Flex Ride
networks the following electronic
systems:
● Continuous Damping Control
● Accelerator Pedal Control
● Steering Control
● All-wheel drive
● Electronic Stability Control (ESC)
178Driving and operating● Antilock Brake System (ABS)with cornering brake control
(CBC)
● Automatic transmission
SPORT mode
The settings of the systems are
adapted to a sportier driving style:
● Damping of shock absorbers reacts more stiffly to providebetter contact with the road
surface.
● The engine reacts more quickly to the accelerator pedal.
● Steering support is reduced.
● Engine torque of All-wheel drive is distributed more to the rear
axle.
● Shift points of automatic transmission occur later.
● Depending on the instrument cluster the colouring of the
display will be adapted.
TOUR mode
The settings of the systems are
adapted to a comfort driving style:
● Damping of shock absorbers reacts more softly.
● Accelerator pedal reacts with standard settings.
● Steering support is in standardmode.
● Engine torque of All-wheel drive is distributed mainly to the front
axle.
● Shift points of automatic transmission occur in a comfort
mode.
NORMAL mode
All settings of the systems are
adapted to standard values.
Drive mode control
Within each manually selected driving mode SPORT, TOUR or NORMAL,
the Drive Mode Control (DMC)
detects and analyses continuously the real driving characteristic,
responses by the driver, and the
active dynamic state of the vehicle. If
necessary, the control unit of DMC
automatically changes the settings
within the selected driving mode or, when recognising greater variations,
the driving mode is changed for the
length of variation.
214Driving and operatingCaution
The system works at an ambient
temperature of approx. -8 °C to
100 °C.
Full functioning of the LPG system
can only be guaranteed with liquid
gas which complies with the minimum
requirements of DIN EN 589.
Fuel selector
Press LPG to switch between petrol
and liquid gas operation as soon as
the required parameters (coolant
temperature, gas temperature and
minimum engine speed) have been
reached. The requirements are
usually fulfilled after approximately
60 seconds (depending on exterior
temperature) and the first firm press
on the accelerator. The status LED
shows the current operating mode.1 off:petrol operation1 flashes:checking conditions
for fuel transition to
liquid gas operation.
Illuminates if
conditions are fulfilled.1 illumi‐
nates:liquid gas operation1 flashes
five times
and extin‐
guishes:liquid gas tank is
empty or failure in
liquid gas system. A
message is displayed
in the Driver
Information Centre.
If the fuel tank is empty, the engine
will not start.
The selected fuel mode is stored and
reactivated at the next ignition cycle if conditions allow.
As soon as the liquid gas tank is
empty, petrol operation is
automatically engaged until the
ignition is switched off.
When switching automatically
between petrol or gas operation, a
brief delay of engine tractive power
may be noticeable.
Every six months, run the petrol tank
down until control indicator I or
Y illuminates, then refuel. This helps
maintain fuel quality and system
function for petrol operation.
Fill the tank completely at regular intervals to prevent corrosion in the
tank.
Faults and remedies
If gas mode is not possible, check the
following:
● Is there enough liquid gas present?
● Is there enough petrol present for
starting?
322Tow bar....................................... 220
Towing ................................ 220, 266
Towing another vehicle .............268
Towing equipment .....................222
Towing the vehicle .....................266
Traction Control system ............. 175
Traction Control system off......... 107
Traffic sign assistant ...........110, 208
Trailer coupling ........................... 220
Trailer stability assist .................223
Trailer towing ............................. 221
Transmission ............................... 16
Transmission display .................167
Tread depth ............................... 255
Trip odometer .............................. 99
Turn and lane-change signals ...134
Turn signal ................................. 103
Tyre chains ................................ 257
Tyre designations ......................252
Tyre pressure ............................ 252
Tyre pressure monitoring system ............................ 108, 254
Tyre pressures ........................... 292
Tyre repair kit ............................. 257
U
Ultrasonic parking assist ...106, 196
Upholstery .................................. 272
Uplevel display ........................... 110Upshift........................................ 106
Using this manual ..........................3
V Valet mode ................................. 117
Variable effort steering ...............106
Vehicle battery ........................... 231
Vehicle checks............................ 226
Vehicle data ................................ 278
Vehicle data recording and privacy ..................................... 316
Vehicle detected ahead ..............109
Vehicle dimensions .................... 289
Vehicle Identification Number ....276
Vehicle jack ................................ 251
Vehicle messages .....................119
Vehicle personalisation .............121
Vehicle security ............................ 33
Vehicle specific data ......................3
Vehicle storage ........................... 225
Vehicle tools ............................... 251
Vehicle unlocking ........................... 6
Vehicle weight ........................... 286
Ventilating ..................................... 53
Ventilation ................................... 140
W
Warning chimes .........................120
Warning lights ............................... 99
Warning triangle .......................... 80
Washer and wiper systems .........13Washer fluid ............................... 230
Wheel changing .........................260
Wheel covers ............................. 256
Wheels and tyres .......................252
Windows ....................................... 39
Windscreen................................... 39
Windscreen wiper/washer ...........86
Winter tyres ............................... 252
Wiper blade replacement ..........233
X Xenon headlights .......................237