START-STOPsystem
Introduction
This chapter contains information on the following subjects:
Operation
77
Manually deactivating/activating the system
78
The START-STOPsystem (hereinafter referred to as: the system) reduces CO 2emissions and harmful emissions, and saves fuel.
If the system determine that the engine is not needed when the vehicle stops
(e.g. at the traffic lights), it turns off the engine and starts it again when mov-
ing off.
The system function depends on many factors. Some of them are down to the
driver, the others are systemic and can neither be influenced nor identified.
Therefore the system may react differently in situations which seem identi-
cal from the driver's perspective.
The system is automatically activated every time the ignition is switched on
(even where this has previously been manually deactivated with the button
).
Note
If the engine has stopped due to the system, the ignition remains on.
Operation
Fig. 90
Display
Vehicles with manual transmission
The engine is automatically switched offas soon as the vehicle comes to a halt,
the shift lever is moved into neutral and the clutch pedal is released.
The engine is automatically startedas soon as the clutch pedal is depressed.
Vehicles with automatic transmission
The engine is automatically switched offas soon as the vehicle comes to a
standstill and the brake pedal is operated.
The engine is automatically startedas soon as the brake pedal is released.
Requirements for the system to function correctly
The following conditions must be met for the system to function correctly.
The driver's door is closed.
The driver has fastened the seat belt.
The bonnet is closed.
The driving speed was higher than 4 km/h after the last stop.
System status
The system status is shown in the display when the vehicle comes to a halt
» Fig. 90 .
The engine is automatically switched off; when the vehicle moves off the
ignition process will be automatically initiated.
The engine is not automatically switched off.
Reasons for the engine running
It may be essential for the engine to keep running when the vehicle comes to
a halt, for the following reasons. ▶ The engine temperature for the proper function of the system has not yet
been reached.
▶ The charge state of the vehicle battery is too low.
▶ The current consumption is too high.
▶ High air-conditioning or heating capacity (high fan speed, big difference be-
tween the desired and actual interior temperature).
When the engine is shut-down automatically and the system detects that the
engine is required such as when the brake pedal is pressed repeatedly then
the system automatically starts the engine. 77Starting-off and Driving
Wet roads or road salt
The performance of the brakes can be delayed as the brake discs and brake
pads may be moist or have a coating of ice or layer of salt on them in winter.
The brakes are cleaned and dried by applying the brakes several times »
.
Corrosion
Corrosion on the brake discs and dirt on the brake pads occur if the vehicle has
been parked for a long period and if you do not make much use of the braking
system. The brakes are cleaned by applying the brakes several times »
.
Long or steep slopes
Before travelling a long distance with a steep gradient, reduce speed and shift
into the next lowest gear. As a result, the braking effect of the engine will be
used, reducing the load on the brakes. Any additional braking should be com-
pleted intermittently, not continuously.
Emergency brake display
If the brakes are applied in full and the vehicle systems evaluate the situation
as dangerous for the traffic following behind, the brake light flashes automati-
cally.
After the speed was reduced below around 10 km/h or the vehicle was stop-
ped, the brake light stops flashing and the hazard warning light system
switches on. The hazard warning light system is switched off automatically af-
ter accelerating or driving off again.
Faults in the brake surface
If it is found that the braking distance has suddenly become longer and that
the brake pedal can be depressed further, the brake system may be faulty.
Visit a specialist garage immediately and adjust your style of driving appropri-
ately as you will not know the exact extent of the damage.
Low brake fluid level
An insufficient level of brake fluid may result in problems in the brake system.
The level of the brake fluid is monitored electronically » page 34,
Braking
system .
Brake booster
The brake booster increases the pressure generated with the brake pedal. The
brake booster only operates when the engine is running.
WARNINGOnly apply the brakes for the purpose of drying and cleaning the brake
discs if the traffic conditions permit this. Do not place any other road users
in jeopardy.
Handbrake
Fig. 92
Handbrake
Read and observe and on page 78 first.
The hand brake is used when stopping and parking for securing the vehicle
against unwanted movement.
Apply
›
Pull the handbrake lever firmly upwards.
Loosening
›
Pull the handbrake lever up slightly and at the same time push in the locking
button » Fig. 92 .
›
Move the lever right down while pressing the lock button.
The handbrake warning light
illuminates when the handbrake is applied,
provided the ignition is on.
A warning signal sounds if the vehicle is inadvertently driven off with the
handbrake applied.
The handbrake warning is activated if the vehicle is driven at a speed of more
than around 5 km/h for more than 3 seconds.
79Starting-off and Driving
M - Manual gearshift (Tiptronic)
Further information » page 82.
With driving mode set, the vehicle will not start up
If the vehicle does not start off, the problem may be that the selector lever is not completely in the selected position. In such an instance, press the brake
pedal and put the selector lever into the required position.
Faults in the automatic gearbox
In the event of a fault in the automatic gearbox, warning lights may light up in
the instrument panel » page 35,
Automated transmission .
An error on the automated manual transmission can become noticed, for ex- ample, by the following.
▶ Only certain gears are selected.
▶ The reverse gear R cannot be used.
Manual gearshift (Tiptronic)
Fig. 95
Selector lever: manual shifting/information display
Read and observe
and on page 81 first.
Tiptronic mode makes it possible to manually shift gears on the selector lever. The gearshift indicator must be observed when changing gear » page 30.
Switching to manual shifting when the vehicle is stationary
›
Depress the brake pedal.
›
Press the selector lever twice to the left in the spring-tensioned position.
Switching to manual shifting during driving
›
Press the selector lever towards the left in the spring-tensioned position in
the direction of the arrow and set in position M. The selector lever position
you have engaged is shown in the instrument cluster display » Fig. 95.
Shifting up gears›Press the selector lever forwards + » Fig. 95 .
Shifting down gears›
Press the selector lever backwards
-
» Fig. 95 .
Temporarily switching to manual shifting in position D
›
Tilt the selector lever forward
+
or rearwards
-
» Fig. 95 .
If in a short time, no manual gear change takes place, then the temporary
manual shifting switches off.
Note
■ It may be beneficial, for example, when travelling downhill, to use manual
shifting of gears. Shifting to a lower gear reduces the load on the brakes and
hence the wear on the brakes » page 78, Information on braking .■
When accelerating, the gearbox automatically shifts up into the higher gear
just before the maximum permissible engine speed is reached.
■
If a lower gear is selected, the gearbox does not shift down until there is no
risk of the engine overrevving.
Starting-off and driving
Read and observe
and on page 81 first.
Starting off
›
Start the engine.
›
Firmly depress and hold the brake pedal.
›
Press the selector lever towards the left in the spring-tensioned position in
the direction of the arrow » Fig. 94 on page 81 and insert into position D .
›
Release the brake pedal and accelerate.
Stopping (while the car is moving)
›
Fully depress and hold the brake pedal and bring the vehicle to a stop.
›
Keep holding the brake pedal until driving is resumed.
The selector lever position N does not have to be selected when stopping for a
short time, such as at a cross roads.
Kick-down
The Kick-down function allows you to achieve the maximum acceleration of
your vehicle while driving.
When the accelerator pedal is fully depressed, the Kick-down function is acti-
vated in any forward driving mode.
82Driving
Assist systems
General information
Introduction
WARNINGThe following general instructions regarding the use of assistance systems
must be observed.■
The assistance systems serve merely to support the driver and do not re-
lieve the driver of responsibility for the operation of the vehicle.
■
The increased safety as well as the increased occupant protection offered
by the assistance systems must not tempt you to take safety risks - there
is a risk of an accident!
■
Adjust the speed and driving style to the current visibility, weather, road
and traffic conditions.
■
The assistance systems have physical and system-related limitations. For
this reason, the driver may experience some undesired or delayed system
responses in certain situations. You should therefore always be alert and
ready to intervene!
■
Only activate, deactivate and set the assistance systems to keep you fully
in control of the vehicle in every traffic situation - otherwise there is a risk
of an accident!
Braking and stabilisation systems
Introduction
This chapter contains information on the following subjects:
Stability Control (ESC)
85
Anti-lock braking system (ABS)
85
Traction control (TCS)
85
Electronic Differential Lock (EDL)
86
Brake Assist (HBA)
86
Hill Start Assist (HHC)
86
This chapter describes the functions of the brake and stabilization systems.
The error display is in Chapter » page 34, Warning lights .
The brake and stabilisation systems are automatically activated each time the
ignition is switched on, unless otherwise indicated.
WARNINGThe general information relating to the use of assistance systems must be
observed » page 85, in section Introduction .
Stability Control (ESC)
Read and observe
on page 85 first.
The ESC improves vehicle stability in dynamic driving situations, such as whenthe vehicle starts to skid.
The ESC monitors whether the desired direction of the current vehicle motion
is occurring. In case of any deviation (e.g. oversteer), the ESC automatically
brakes individual wheels to maintain the desired direction.
During an intervention of the system, the warning light flashes in the instru-
ment cluster.
Anti-lock braking system (ABS)
Read and observe
on page 85 first.
ABS prevents the wheels locking when braking. Thus helping the driver to
maintain control of the vehicle.
The intervention of the ABS is noticeable from the pulsating movements of
the brake pedal which is accompanied by noises.
When the ABS system is active, do not brake periodically or reduce the pres-
sure on the brake pedal.
Traction control (TCS)
Read and observe
on page 85 first.
TCS prevents the spinning of the wheels on the drive axle. TCS reduces the
drive power transmitted to the wheels that are spinning Thus, for example,
driving on road surfaces with low grip is made easier.
If there is a TCS intervention, the warning light flashes in the instrument
cluster.
85Assist systems
Electronic Differential Lock (EDL)Read and observe
on page 85 first.
EDL prevents the turning of the respective wheel of the driven axle. EDL
brakes the spinning wheel, if necessary, and transmits the driving force to the
other driving wheel. Driving becomes easier on road surfaces with different
traction under each wheel of the driven axle.
The EDL switches off automatically in order to avoid excessive heat generation
on the brake of the wheel being braked. Once the brakes have cooled down,
there is an automatic re-activation of EDL.
Brake Assist (HBA)
Read and observe
on page 85 first.
HBA increases the braking effect and helps to shorten the braking distance.The HBA is activated by very quick operation of the brake pedal. In order to
achieve the shortest possible braking distance, the brake pedal must be ap-
plied firmly until the vehicle has come to a standstill.
The HBA function is automatically switched off when the brake pedal is re-
leased.
Hill Start Assist (HHC)
Read and observe
on page 85 first.
When driving on slopes, HHC allows you to move your foot from the brake ped-al to the accelerator pedal without having to use the handbrake.
The system holds the brake pressure produced by the activation of the brake pedal for approx. 2 seconds after the brake pedal is released.
The HHC is active as of a 5 % slope, if the driver door is closed. HHC is always
only active on slopes when in forward or reverse start off.
Parking aid (ParkPilot)
Introduction
This chapter contains information on the following subjects:
Function
87
Visual parking system
87
The parking aid (hereinafter referred to as: the system) draws attention to any
obstacles via audible signals and a display in the Move & Fun multifunction de-
vice screen when manoeuvring in the vicinity of the vehicle » page 87, Visual
parking system .
WARNING■
The general information relating to the use of assistance systems must
be observed » page 85, in section Introduction .■
Moving persons or objects may not be recognized by the system sensors.
■
Under certain circumstances, surfaces of certain objects and types of
clothing cannot reflect the system signals. For this reason, such people or
objects may not be recognised by the system sensors.
■
External noise sources may affect the signals of the system sensors. Un-
der adverse conditions, this may cause objects or people not to be recog-
nised by the system.
■
Before reversing, you should make sure that there are no small obstacles,
such as rocks, thin posts, trailer drawbars etc. behind your vehicle. Such ob-
stacles may not be recognised by the system sensors.
CAUTION
■ Keep the system sensors clean, snow-and ice-free and do not cover with any
objects of any kind, otherwise the system functioning may be impaired.■
Under adverse weather conditions (heavy rain, water vapour, very low or
high temperatures etc.), the system function may be limited - “incorrect recog-
nition of obstacle”.
■
Additionally installed accessories such as e.g. bicycle carriers can impair the
system function.
86Driving
FunctionFig. 97
Fitting the sensors / Range of sensors
Read and observe
and on page 86 first.
The system uses ultrasound waves to calculate the distance between the
bumper and an obstacle. The ultrasonic sensors are integrated in the rear
bumper » Fig. 97 .
Area scanned and range of the sensors » Fig. 97
150 cm
60 cm
Audible signals
The interval between the acoustic signals becomes shorter as the clearance is
reduced. A continuous tone sounds from a distance of approx. 30 cm - danger
area. From this moment on, do not continue reversing!
Activation/deactivation
The system is activated by engaging reverse gear. This is confirmed by a brief
audible signal.
The system is deactivated by disengaging reverse gear.
Fault display
If a warning signal sounds for about 3 seconds after activating the system and
there is no obstacle close to your car, this indicates a system fault. Seek help
from a specialist garage.
ABVisual parking systemFig. 98
Screen display of the visual park-
ing system
Read and observe and on page 86 first.
The visual parking system is shown in the screen of the multifunctional device
Move & Fun.
Switching on the screen display of the visual parking system
When the ignition and the multifunction device Move & Fun are both on, the
visual parking system is switched on by shifting into reverse gear.
Screen display » Fig. 98
An obstacle appearing in the collision zone is shown as an orange-col-
oured segment » Fig. 98.
Do not continue to drive!
An area without detected obstacles is shown as a transparent segment.
An obstacle in the sensor range which lies outside of the collision area is
shown by the light-blue segment.
A region behind the detected obstacle is shown with the dark-blue seg-
ment.
Switching off the screen display of the visual parking system
The screen display can be switched off as follows. ▶ Through touching the screen of the multifunction device » Fig. 98 with the
fingers.
▶ By shifting out of reverse.
▶ By turning off the ignition.
ABCD87Assist systems
WARNING■Always deactivate the cruise control system after use to prevent the sys-
tem being switched on unintentionally.■
Control may only be resumed if the set speed is not too high for the cur-
rent traffic conditions.
Note
During control, speed can be increased by pressing the accelerator pedal. Re-
leasing the accelerator pedal will cause the speed to drop again to the set
speed.
City Safe Drive
Introduction
This chapter contains information on the following subjects:
Operation
89
Disable / Enable
90
City Safe Drive (hereinafter referred to as: the system) monitors the traffic sit-
uation ahead of the vehicle. If the system detects a risk of collision with an ob-
stacle ahead of the vehicle, then automatic braking is applied. The risk of a col-
lision is thus reduced and the consequences of an impact are minimized.
WARNING■ The general information relating to the use of assistance systems must
be observed » page 85, in section Introduction .■
The system does not respond to crossing or oncoming objects.
CAUTION
The system can slow down the vehicle to a standstill. If the vehicle continues
to roll forward after stopping, then it should be stopped with the footbrake.OperationFig. 100
Laser sensor/detection range
Read and observe
and on page 89 first.
By means of a laser sensor » Fig. 100 -
the system detects traffic situations
ahead of the vehicle up to a distance of about 10 meters » Fig. 100 -
.
The system interventions take place when a risk of collision is detected as fol-
lows.
▶ The brake system is prepared for an emergency stop.
▶ If the driver fails to respond to a detected danger, an automatic braking ac-
tion is performed.
The system is ready to intervene automatically in the following conditions. The engine is running.
The system is activated.
The travel speed is about 5-30 km/h.
The field of view of the laser sensor is not impaired.
If the system triggers automatic braking, the indicator symbol flashes in the
display of the instrument cluster quickly.
Automatic braking interventions by the emergency brake function can be ter-
minated by pressing the clutch or the accelerator or by moving the steering
wheel.
The system can, for example, be affected in the following situations or not
be available. ▶ When visibility is poor, (e.g. fog, heavy rain, thick snowfall).
▶ Driving around “sharp” bends.
▶ When fully pressing down the accelerator pedal.
89Assist systems
▶When the laser sensor is dirty or obscured.
▶ When the vehicles are very dirty and have a low level of reflection.
If the system is not available or there is a system malfunction, the indicator
symbol flashes
slowly in the display of the instrument cluster.WARNING■
The windscreen may be neither blocked nor covered with dirt in the area
of the laser sensor. This can lead to impaired function of the sensor - risk of
accidents!WARNINGThe laser beam from the laser sensor can cause serious eye injuries. The la-
ser beam is not visible to the human eye.■
Never use optical devices, e.g. a range-finder camera or magnifying glass
to look into the laser sensor.
■
The laser beam can also be active when the system is disabled or is not
available.
CAUTION
■ Remove the snow from the windscreen in the area of the laser sensor with a
hand brush and the ice with a solvent-free de-icing spray.■
If the laser sensor range on the windscreen has scratches, cracks, etc, re-
place the windscreen. Only use windscreens approved by the manufacturer.
■
When replacing the windscreen wiper blades, only use windscreen wiper
blades approved by the manufacturer.
Note
If an automatic brake intervention is triggered by the system, the pressure in
the brake system increases and the brake pedal cannot be operated with the
normal pedal stroke.Disable / EnableFig. 101
Button for the City Safe Drive
system
Read and observe and on page 89 first.
The function is automatically activated each time the ignition is switched on.
Deactivating/activating
›
Press the button » Fig. 101.
If the system is turned off and the vehicle is moving at a speed of about 5 - 30
km/h, the warning light
illuminates on the instrument cluster display.
If the system is activated » Fig. 101, the warning light
illuminates in the in-
strument cluster display for about 5 s.
WARNINGDeactivate the system for safety reasons in the following cases.■When the vehicle is being towed away.■
When the vehicle is driven though an automatic car wash.
■
If the laser sensor is damaged or faulty.
■
When the vehicle is on a rolling test bench.
■
When the windscreen is damaged in the region of the laser sensor.
■
For example, if the charge extends to the roof rack over the front edge of
the roof.
Tyre pressure monitoring
Introduction
This chapter contains information on the following subjects:
Save tyre pressure values
91
90Driving