197
Driving
If any of the conditions necessary for the Auto Hold function change while
the vehicle stopped, the system is turned off as is the indicator on the but-
ton ⇒ Fig. 140. The electronic parking brake engages where necessary to
park the vehicle safely ⇒
.
Conditions for keeping the vehicle at a standstill with Auto Hold:
● The driver door must be closed.
● The driver seat belt must be buckled.
● The engine must be running.
● The ASR system is switched on ⇒ page 185.
Switching Auto Hold on and off manually
Press the AUTO HOLD
button ⇒ . The control lamp on the button switches
off when the Auto Hold function is switched off.
Permanent Auto Hold connection
The Auto Hold function must be switched on every time the engine is star-
ted. However, to switch the Auto Hold function on permanently, the mark
must be switched on in the Settings menu, “Autohold” submenu
⇒ page 62.
Auto Hold works automatically under the following conditions:
All points must be fulfilled simultaneously ⇒ : manual gearboxAutomatic gearbox1.If the vehicle is stopped using the brake pedal on a flat or slope.2.The engine must be running smoothly.3.On a slope, the 1st gear is engag-
ed uphill or the reverse gear is en-
gaged for a downhill. The clutch
must be held down.A gear for driving is selected from
R, D or S.
Upon accelerating and pressing in
the clutch simultaneously, the
brake releases gradually.Upon accelerating, the brake re-
leases gradually.
Auto Hold turns off automatically under the following conditions:
manual gearboxAutomatic gearbox1.If one of the conditions mentioned in table on page 197 changes.2.If the engine is not running regularly or if there is a malfunction.3.When changing to idle speed.If the selector lever is placed in
neutral (N).
4.If the engine is turned off or stalls.If the engine is switched off.5.If the driver accelerates while
pressing the clutch in.If the vehicle is accelerated.
6. When one of the wheels has mini-
mal contact with the ground (for
example, on uneven ground).
WARNING
The Auto Hold technology is limited by the laws of physics. The improved
comfort provided by Auto Hold should never prompt you to take risks.
● Never leave the vehicle running and with the Auto Hold function
switched on.
● Auto Hold cannot always stop the vehicle uphill and downhill (for ex-
ample, if the ground is slippery or frozen).
CAUTION
Before entering an automatic car wash, always switch the Auto Hold func-
tion off, as it could be damaged when the electronic parking brake automat-
ically engages.
Safety FirstOperating instructionsPractical TipsTechnical Specifications
198Driving
Start-Stop Function*
Fig. 141 Detailed view of
the centre console: Start-
Stop function button
In Start-Stop mode, the engine is automatically switched off when the vehi-
cle is at a standstill. The engine restarts automatically when required.
The function is enabled automatically whenever the ignition is switched on.
The instrument panel displays information on the current status.
Vehicles with a manual gearbox
● When the vehicle is at a standstill, leave it in neutral and take your foot
off the clutch. The engine switches off.
● Simply depress the clutch pedal to move off again.
Vehicles with an automatic gearbox
● When the vehicle is at a standstill, depress the brake or keep it pressed
down. The engine switches off.
● The engine will start again as soon as you release the brake pedal.
● With the selector lever set to position P, the engine will not start until a
range of gears is selected or the accelerator pedal is depressed. Important conditions for the engine to automatically switch off
●
The driver seat belt must be buckled.
● The driver door must be closed.
● The bonnet must be closed.
● The factory-fitted towing bracket must not be electrically connected to a
trailer.
● A minimum engine temperature has been reached.
● The steering wheel must not be turned more than 270 degrees.
● The vehicle has moved since the last stop.
● In vehicles with Climatronic: The temperature inside the vehicle is within
the preset temperature range.
● The temperature set is neither very high nor very low.
● The air conditioning defrost function is not switched on.
● In vehicles with Climatronic: the blower has not been manually set to a
high speed.
● The power level of the vehicle's battery is sufficient.
● The vehicle's battery temperature is neither too high nor too low.
● The vehicle is not on a steep gradient or slope.
● The front wheels are not overly turned.
● The heated windscreen is not switched on.
● Reverse gear is not engaged.
● The park assist system is not switched on.
Conditions for automatically restarting the engine
The engine may automatically restart under the following conditions:
● If the vehicle interior is too hot or too cold.
● If the vehicle moves.
● If the vehicle's battery voltage drops.
Conditions requiring the key to restart the engine
The engine must be started using the key under the following conditions:
206Driving
Parking
● Parking parallel to the road: Drive next to the gap at a speed of no more
than 40 km/h (25 mph) and at a distance of between 0.5 m and 2 m.
● Parking perpendicular to the road: Drive next to the gap at a speed of no
more than 20 km/h (12 mph) and at a distance of between 0.5 m and 2 m.
● The best parking results will be achieved if you position the vehicle as
parallel as possible to the line of parked cars or the kerb.
● When a suitable parking place is displayed on the instrument panel,
stop and select reverse gear.
● Follow the instructions given on the instrument panel display
● Then, release the steering wheel when the warning signal sounds ⇒
:
The system will move the steering wheel! Observe the surrounding area.
● Observe the surrounding area and accelerate carefully at a maximum of
up to 7 km/h (4 mph).
● The park assist system is only responsible for moving the steering wheel
during the manoeuvre. The driver applies the accelerator, the clutch, the
gears and the brake.
● Follow the instructions given by the park assist system until the ma-
noeuvre is completed.
● The park assist system steers the vehicle forwards and backwards until
it is in a straight position in the parking space.
● The manoeuvre is complete when the corresponding indication is given
on the instrument panel display.
Stopping the parking manoeuvre
The park assist system stops the manoeuvre in the event of one of the fol-
lowing:
● Press button
.
● When driving faster than 7 km/h (4 mph).
● The driver moves the steering wheel.
● The parking manoeuvre has not been completed after six minutes since
the park assist system was activated. ●
A sliding door is opened. To restart the manoeuvre, close the sliding
door and press the button
again.
● There is a system malfunction (system temporarily unavailable).
● The ASR system is switched off or the ASR or ESC is working.
WARNING
The steering wheel turns quickly by itself when parking using the park
assist system. Placing your hand between the steering wheel spokes
could lead to injuries.
Note
● The park assist system has its limitations. For example, it is not possible
to park on tight bends using the park assist system.
● Even if the park assist system recognises that there is not enough space
for parking the vehicle, the instrument panel display will still show this
place. In this case, the parking manoeuvre should not be requested.
● Changing gears between forward and reverse gears before indicated
(that is, before the signal from the parking sensor system) the parking re-
sults may not be ideal.
● For parallel parking (parallel to the road), a sound will tell the driver
when they must change from forward gears to reverse; the signal from the
parking sensor system does not indicate changes of direction.
● The park assist can also be activated afterwards, if you pass close to a
parallel parking space at a maximum of 40 km an hour (25 mph) or close to
a perpendicular parking space at about 20 km an hour (12 mph) and then
press the
button.
● The progress bar on the screen of the instrument panel shows a display
of the relative distance to be covered.
● When the Park Assist system is turning the steering wheel of the stop-
ped vehicle the symbol is also displayed. Press on the brake pedal so
that the steering can turn with the vehicle at a standstill and thus reduce
the number of manoeuvres.
207
Driving
● A suitable parking space length is at least 1.1 m greater than the length
of the vehicle.
● If the results of the park assist system are not as good after changing
the wheels, the system must memorise the perimeter of the new wheels.
This process is performed automatically while the vehicle is in motion. To
help this process, turn slowly (at less than 20 km/h (12 mph)), e.g. in an
empty car park.
Leaving a parking space using the Park Assist system
Driving off
● Switch on the engine.
● Press button
. When the function is enabled, the button
⇒ Fig. 146
will light up.
● Apply the turn signal for the side on which you want to leave the parking
space.
● Select reverse gear.
● Follow the instructions given by the park assist system.
● When the next indication appears, release the steering wheel ⇒
in
Parking using the park assist system on page 206: The system will move the
steering wheel! Observe the surrounding area.
● Observe the surrounding area and accelerate carefully at a maximum of
up to 7 km/h (4 mph).
● The park assist system is only responsible for moving the steering wheel
during the manoeuvre. The driver applies the accelerator, the clutch, the
gears and the brake.
● When it is possible to leave the parking space, the Park Assist system
will stop. Take control of the steering and when traffic conditions permit,
leave the parking space. Automatic stoppage of the manoeuvre
The park assist system stops the manoeuvre in the event of one of the fol-
lowing:
●
When driving faster than 7 km/h (4 mph).
● The driver moves the steering wheel.
● A sliding door is opened. To restart the manoeuvre, close the sliding
door and press the button
again.
● There is a system malfunction (system temporarily unavailable).
● The ASR system is switched off or the ASR or ESC is working.
WARNING
The steering wheel turns quickly automatically when leaving a parking
space using the park assist system. Placing your hand between the steer-
ing wheel spokes could lead to injuries.
Park Assist brake operation
The Park Assist system helps the driver by braking automatically. Automatic
braking does not relieve the driver of responsibility for controlling the accel-
erator, brake and clutch ⇒
.
Braking to avoid damage at excess speed
It is possible that the system operates the brakes to reduce excess speed.
The parking manoeuvre can then continue. The brakes will intervene during
each parking process.
Braking to minimise damage
When approaching an obstacle, the vehicle may brake automatically. In cer-
tain circumstances (for example, storm, detection of ultrasounds, vehicle
status, load, inclination), the Park Assist system may stop the vehicle com-
pletely before an object.
Safety FirstOperating instructionsPractical TipsTechnical Specifications
215
Driving
CCS temporarily switched off. The set speed is displayed in small fig-
ures.
System error. Contact a specialised workshop.
CCS switched on. The speed memory is empty.
The CCS is switched on. The set speed is displayed in large figures.
WARNING
If the warning lamps and messages are ignored, the vehicle may stall in
traffic, or may cause accidents and severe injuries.
● Never ignore the warning lamps or text messages.
● Stop the vehicle safely as soon as possible.
CAUTION
Failure to heed the control lamps and text messages when they appear may
result in faults in the vehicle.
A
BCD
Cruise control operation
Fig. 153 On the left of
the steering column: con-
trol lever for cruise con-
trol system
effectControl position,
control operations
⇒ Fig. 153Action
Switching on the
cruise control sys-
tem.Click
ON 1
The system is switched on. The
system does not maintain the
speed because there is still no
speed set.
Switching on the
cruise control sys-
tem.SET button AThe current speed is stored and
maintained.
Temporarily
switching off the
cruise control sys-
tem.Press
CANCEL 2or
engage the clutch
or the brakeThe cruise control system is
switched off temporarily. The
speed setting will remain stored.
Safety FirstOperating instructionsPractical TipsTechnical Specifications
216Driving
effectControl position,
control operations
⇒ Fig. 153Action
Switching the
speed setting
back on.Press RESUME 1
The stored speed is reached again
and maintained. If no speed has
been set then the vehicle will re-
cord and maintain the actual
speed of the vehicle.
Increasing the
stored speed (dur-
ing CCS setting)Hold down
SPEED + +
Short press:
Increases the speed
at intervals of 10 km/h (6 mph)
and records it.
Long press: the vehicle acceler-
ates while the button remains
pressed. Release the button to
store the current speed.
Reducing the stor-
ed speed (during
CCS setting)Press SPEED – –
Short press:
Reduces the speed at
intervals of 10 km/h (6 mph) and
records it.
Long press: while this remains
pressed, speed is reduced inter-
rupting the accelerator without
using the brakes. Release the but-
ton to store the current speed.
Switching off the
cruise control sys-
tem.Click OFF 2The system is switched off. The
stored speed is deleted.
Travelling down hills with the CCS
When travelling down hills the CCS cannot maintain a constant speed. Slow
the vehicle down using the brake pedal and reduce gears if required.
Automatic off
The cruise control system is switched off automatically or temporarily: ●
If the system detects a fault that could affect the working order of the
CCS.
● If you increase the stored speed by using the accelerator for a certain
time.
● if the brake or clutch pedal is depressed.
● If you change gears.
● If the airbag is triggered.
230Driving and the environment
Economic driving style
Changing gear early
General instructions: The highest gear is always the most economical gear.
As a guideline, for the majority of vehicles: At a speed of 30 km/h (19 mph),
drive in third gear, at 40 km/h (25 mph) in fourth gear and at 50 km/h
(30 mph) in fifth gear.
In addition, skipping gears when shifting up helps to save fuel, weather and
traffic conditions permitting.
Do not wait until the last moment before changing gear. Only use first gear
when you move off and change to second gear quickly. Avoid the kick-down
function in vehicles with automatic gearbox.
Vehicles with a gear display help to achieve an economical driving style as
the display indicates the best moment to change gear.
Let the vehicle roll
If you take your foot off the accelerator, the fuel supply is stopped and con-
sumption is reduced.
Allow the vehicle to roll without accelerating, for example when approach-
ing a red traffic light. However, if the vehicle is rolling too slowly or the dis-
tance is too long, the clutch pedal should be pressed to declutch. The en-
gine will then operate at idle speed.
If the vehicle is going to be at a standstill for a period of time, switch off the
engine; for example, while waiting at a level crossing. In vehicles which
have the Start-Stop function on, the engine switches off automatically when
the vehicle is not moving.
Think ahead and “flow” with the traffic
Frequent acceleration and braking considerably increase fuel consumption.
If you think ahead as you drive and keep a safe distance from the vehicle in
front, it is possible to slow down by simply lifting your foot off the accelera-
tor. This eliminates the need for constant braking and acceleration. Calm and steady driving
Constancy is more important than speed: The more you drive at a constant
speed, the lower the fuel consumption.
When driving on the motorway, it is more efficient to drive at a constant and
more moderate speed than to be continuously accelerating and braking. As
a general rule, you will reach your destination just as quickly when you drive
at a constant speed.
The cruise control function helps you to achieve a constant style of driving.
Moderate use of additional electrical appliances
It is important to travel in comfort, but convenience systems should be used
in an ecological manner.
Some equipment, when connected, increase fuel consumption considera-
bly, for example:
●
Air conditioning cooling system: If the air conditioning system is re-
quired to cool to significantly lower temperatures than the true outside tem-
perature, it will require a large quantity of energy from the engine. There-
fore, we recommend that the selected temperature for the vehicle is not too
different to the outside temperature. It is a good idea to open all the win-
dows of the car before starting your journey, and to drive a short distance
with all the windows open to allow the vehicle to cool down slightly. Only
then should you close all the windows and switch on the air conditioning.
Keep windows closed when travelling at high speeds. Driving with the win-
dows open increases fuel consumption.
● Switch off the seat heating when the seats have warmed up.
● Switch off the heated rear window and the windscreen heating when the
windows have demisted and are free of ice.
● Do not leave the auxiliary heater switched on when the vehicle is mov-
ing ⇒ page 165.
242Trailer towing
●The vehicle centre of gravity and handling change because of the trailer
load and because of the increased combined mass of the vehicle and trail-
er.
● If the towing vehicle is empty and the trailer loaded then the load distri-
bution is incorrect. If you must travel in these conditions, drive carefully and
reduce your speed accordingly.
Hill starts with a trailer
Depending on the hill and the gross combined weight, it is possible that the
combined vehicle and trailer move backwards slightly when starting.
For a hill start with a trailer, proceed as follows:
● Press and hold the brake pedal.
● Press the button
once to turn off the electric parking brake
⇒ page 185.
● Press and hold the button
to hold the vehicle and trailer combination
using the parking brake.
● With a manual gearbox: press the clutch pedal to the floor.
● Engage first gear or the gear range D ⇒ page 176, Changing gear.
● Release the brake pedal.
● Move off slowly. To do this, gently release the clutch pedal (for manual
gearbox).
● Release the button
only when the engine provides sufficient power
to move the vehicle and trailer combination.
WARNING
Jerking the trailer in an unsuitable manner could cause loss of vehicle
control with the subsequent serious consequences.
● Driving with a trailer and transporting heavy or a large objects will
change the vehicle handling and braking distances.
WARNING (Continued)
● Anticipate traffic and be extremely cautious. Brake early.
● Adjust your speed and driving style to visibility, road, traffic and
weather conditions. Reduce your speed, especially on steep hills.
● Accelerate gently and carefully. Avoid brusque manoeuvres and sud-
den braking.
● Always take the following precautions seriously. Reduce your speed
immediately if you observe the trailer rocking from side to side.
● Never try to stop the “snaking” by increasing speed.
● Always take the speed limits for vehicles with and without trailers in
each country into account.
Stabilising the vehicle and trailer combination
Stabilisation of the vehicle and trailer combination is an extension of the
electronic stability control (ESC) and helps, with the assistance of the trajec-
tory control, to reduce trailer “snaking”.
Stabilisation of the vehicle and trailer combination is active when the ESC
indicator on the dash panel remains lit for about two seconds more than the
ABS indicator.
Requirements for stabilising the vehicle/trailer combination
● An original tow hitch is fitted by the manufacturer or a compatible model
is retrofitted.
● The ECS is switched on. The warning lamp on the instrument panel is
not lit.
● The trailer is connected to the vehicle using the power socket.
● Driving faster than 60 km/h (37 mph).
● The maximum drawbar load is used.