Driving and operating103Driving and
operatingDriving hints ............................... 103
Control of the vehicle ...............103
Steering ................................... 104
Starting and operating ...............104
New vehicle running-in ............104
Ignition switch positions ...........104
Retained power off ..................105
Starting the engine ..................105
Overrun cut-off ........................ 106
Stop-start system ....................106
Parking .................................... 109
Engine exhaust .......................... 110
Catalytic converter ...................110
Manual transmission ..................110
Manual transmission automa‐
ted .............................................. 111
Transmission display ...............111
Starting the engine ..................111
Selector lever .......................... 112
Manual mode ........................... 113
Electronic driving programmes 113
Fault ........................................ 113Brakes........................................ 114
Antilock brake system .............114
Parking brake .......................... 115
Brake assist ............................. 115
Hill start assist ......................... 115
Ride control systems .................116
Traction Control system ..........116
Electronic Stability Control ......117
City mode ................................ 118
Driver assistance systems .........119
Cruise control .......................... 119
Speed limiter ........................... 121
Parking assist .......................... 122
Lane departure warning ..........123
Fuel ............................................ 124
Fuel for petrol engines .............124
Fuel for liquid gas operation ....125
Refuelling ................................ 127
Fuel consumption - CO 2-
Emissions ............................... 130Driving 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 3 106.
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.
104Driving and operatingUse only floor mats, which fit properly
and are fixed by the retainers on the
driver side.
Driving downhill
Engage a gear when driving downhill to ensure that sufficient brake
pressure is available.
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.
Control indicator c 3 70.Caution
Vehicle equipped with electric
power steering:
If the steering wheel is turned until it reaches the end of its travel and
is held against that position for an
extended period of time, power
steering assistance may be
reduced.
If the steering assistance is used
for an extended period of time,
power assistance may be
reduced.
Power steering assistance should
return back to normal when the
system has cooled down.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.
Autostop may be inhibited to allow for
charging of the vehicle battery.
Ignition switch positions
Turn key:
Driving and operating115Fault9Warning
If there is a fault in the ABS, the
wheels may be liable to lock due
to braking that is heavier than
normal. The advantages of ABS are no longer available. During
hard braking, the vehicle can no longer be steered and may
swerve.
Have the cause of the fault remedied
by a workshop.
Parking brake
Manual parking brake9 Warning
Always apply parking brake firmly
without operating the release
button, and apply as firmly as
possible on a downhill or uphill
slope.
To release the parking brake, pull
the lever up slightly, press the
release button and fully lower the
lever.
To reduce the operating forces of
the parking brake, depress the
brake pedal at the same time.
Control indicator R 3 69.
Brake assist
If the brake pedal is depressed
quickly and forcefully, maximum
brake force is automatically applied
(full braking).
Maintain steady pressure on the
brake pedal for as long as full braking is required. Maximum brake force is
automatically reduced when the
brake pedal is released.
Hill start assist
The system helps prevent unintended movement when driving away on
inclines.
When releasing the brake pedal after
stopping on an incline, the brakes
remain on for a further two seconds.
The brakes release automatically as
118Driving and operatingESC is reactivated by pressing t
again. If the TC system was
previously disabled, both TC and
ESC are reactivated. k and t
extinguish 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 warning code
appears in the Driver Information
Centre. The system is not
operational.
Have the cause of the fault remedied
by a workshop.
City mode City mode is a feature which enables
increased steering assistance during
lower speed conditions, e.g. city
traffic or parking. Steering assistance
is increased for greater convenience.Activation
Press B when engine is running. The
system works from standstill up to
37 mph, and also in reverse gear. Above this speed, the system
changes to normal mode. When
activated, City mode engages
automatically below 37 mph.
An illuminated LED in the City mode
button indicates that the system is
active and a message pops-up in the
Driver Information Centre.
City mode remains active during an
Autostop, but is only operational when the engine is running.
Stop-start system 3 106.
Deactivation
Press B. The LED in the button
extinguishes.
Each time the engine is started, City
mode is deactivated.
Overload If the steering in City mode is heavily
loaded, e.g. in long parking
manoeuvres or heavy city traffic, the
system is deactivated for overheat
protection. Steering operates in
normal mode until City mode
activates automatically
Fault
122Driving and operatingThe limited speed will be stored and
is indicated in brackets in the Driver
Information Centre. Additionally, a
corresponding message appears.
Resume speed limit
Turn thumb wheel to RES/+. The
stored speed limit will be obtained.
Switching off
Press L, the speed limit indication
extinguishes in the Driver Information Centre. The stored speed is deleted.
By pressing m to activate cruise
control, speed limiter is also
deactivated and the stored speed is
deleted.
By switching off the ignition, speed
limiter is also deactivated, but the
speed limit will be stored for next
speed limiter activation.Parking assist
Rear parking assist9 Warning
It is the driver who bears full
responsibility for the parking
manoeuvre.
Always check the surrounding
area while reversing and using the rear parking assist system.
The rear parking assist makes
parking easier by measuring the
distance between the vehicle and
rear obstacles. It informs and warns
the driver by giving acoustic signals
and display indication.
The system has three ultrasonic
parking sensors in the rear bumper.
Activation
When reverse gear is engaged, the
system is ready to operate
automatically.
Indication
The system warns the driver with
acoustic signals against potentially
hazardous obstacles behind the
vehicle. The interval between the
sounds becomes shorter as the
vehicle gets closer to that obstacle.
When the distance is less than
approx. 40 cm, the sound is
continuous.
Deactivation
The system automatically switches
off when reverse gear is disengaged.
The system might not detect the
obstacle when the vehicle is driven above a 10 km/h.
Driving and operating123Fault
In the event of a fault in the system,
control indicator r illuminates in the
instrument cluster 3 70.
Additionally if the system does not
work due to temporary conditions like
snow covered sensors, r
illuminates.
Basic notes on parking assist
systems9 Warning
Under certain circumstances,
various reflective surfaces on
objects or clothing as well as
external noise sources may cause the system to fail to detect
obstacles.
Special attention must be paid to
low obstacles which can damage
the lower part of the bumper.
Caution
Performance of the system can be reduced when sensors are
covered, e.g. by ice or snow.
Performance of the parking assist
system can be reduced due to
heavy loading.
Special conditions apply if there
are taller vehicles in the vicinity
(e.g. off-road vehicles, mini vans,
vans). Object identification and correct distance indication in the
upper part of these vehicles
cannot be guaranteed.
Objects with a very small reflection
cross-section, e.g. objects of
narrow size or soft materials, may
not be detected by the system.
Parking assist systems do not
detect objects outside the
detection range.
Lane departure warning
The lane departure warning system
observes the lane markings between
which the vehicle is driving via a front camera. The system detects lane
changes and warns the driver in the
event of an unintended lane change
via visual and acoustic signals.
Criteria for the detection of an
unintended lane change are:
● No operation of turn signals.
● No brake pedal operation.
● No active accelerator operation or speeding-up.
● No active steering.
If the driver is performing these
actions, no warning will be issued.
Activation
126Driving and operatingThe selected fuel mode is stored andreactivated at the next ignition cycle if
conditions allow.
As soon as the liquid gas tanks are
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 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?Due to extreme temperatures in
combination with the gas
composition, it may take slightly
longer before the system switches
from petrol to gas mode.
In extreme situations, the system may
also switch back to petrol mode if the
minimum requirements are not
fulfilled. If conditions allow, it might be
possible to manually switch back to
liquid gas operation.
Seek the assistance of a workshop in the event of all other faults.Caution
Repairs and adjustments may onlybe made by trained specialists in
order to maintain the safety and
warranty on the LPG system.
Liquid gas is given a particular odour
(odorised) so that any leaks can be
detected easily.
9 Warning
If you smell gas in the vehicle or in
the immediate vicinity, switch to petrol mode immediately. No
smoking. No naked flames or
ignition sources.
If the gas odour persists, do not start
the engine. Have the cause of the
fault remedied by a workshop.
When using underground car parks,
follow the instructions of the operator
and local laws.
Notice
In the event of an accident, switch off
the ignition and lights.
148Vehicle careNo.Circuit1Onstar2Air conditioning system3Instrument panel4Transmission control module5Infotainment6Body control module7Rear parking assist8Data link connection9Electric steering column lock10Sensing and Diagnostic module11DC transformer12–13Electronic toll collection system14Linear power module15Central locking system/Ignition
system16Ignition systemNo.Circuit17forward collision alert18Instrument panel19Forward collision alert indication20Headlight range adjustment21Power windows, front22Power windows, rear23–24Manual transmission auto‐
mated module25Auxiliary power outlet26Sunroof27–28Body control module 829Body control module 730Body control module 631Body control module 532Body control module 4