FunctionFig. 147
Range of sensors / system button
Read and observe
and on page 153 first.
The parking aid (hereafter referred to solely as system) only works when the
ignition is switched on.
The system supports the driver via audible signals, via the display on the radio
or via the factory-installed navigation system when parking and manoeu-
vring » Radio user guide, Navigation system user guide.
The system uses ultrasound waves to calculate the distance between the
bumper and an obstacle. The ultrasound sensors are located on the front/rear
bumper.
Image description - approximate range of the sensors
Area » Fig. 147Range of sensorsA120 cmB60 cmC160 cmD60 cmEa)60 cma)
Applies only for vehicles with 12 sensors.
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 driving!
The length of the vehicle can be increased with an installed detachable towing
device. The danger area thus begins at a distance of around 35 cm on vehicles equipped with a factory-fitted towing device.
Towing a trailer
On vehicles equipped with a factory-fitted towing device, only system areas A
and
B
» Fig. 147 are active when towing a trailer.
Activation/deactivation
Read and observe
and on page 153 first.
The system is automatically activated by selecting reverse gear or pressing
the symbol button
» Fig. 147 on page 154 . The symbol
lights up in the
button; activation is confirmed by a brief acoustic signal.
The system is deactivated by moving out of reverse gear or by pressing the
symbol button, or is deactivated automatically at a speed of over 10 km/h (the
symbol in the button goes out).
On vehicles which only have rear sensors , the system can only be deactivated
by moving out of reverse gear.
Park assist
Introduction
This chapter contains information on the following subjects:
Functioning
155
Finding a parking space
155
Parking
156
Departing from a parallel parking space
157
Automatic emergency braking
157
Information messages
157
Park Assist (in the following referred to as the system) helps drivers park in
suitable parallel and perpendicular parking places and also to manoeuvre out
of parallel parking spaces.
The system takes over the steering movements when parking or driving out of
the parking space, the driver operates the pedals as well as the gear lever.
The state in which the steering wheel is operated by the system, is referred to
as parking operation.
154Driving
The parking aid is part of the park assist system, therefore the information
and safety guidelines » page 153 , Parking aid must also be read and ob-
served.WARNING■ The system only serves to support and does not relieve the driver of the
responsibility for the vehicle operation.■
During the parking process, the system automatically performs rapid
steering movements. While it is doing so, do not place your hands between
the steering wheel – risk of injury!
■
During a parking manoeuvre on loose or slippery surfaces (gravel, snow,
ice, etc.) you may stray from the calculated road because of the surface
conditions. We therefore recommend not using the system in such situa-
tions.
■
External noise sources may affect the signals of the system sensors. Un-
der adverse conditions, this may cause objects or people to not be recog-
nised by the system.
CAUTION
■ If other vehicles are parked behind or on the kerb, the system can guide your
vehicle beyond the kerb or onto it. Ensure that the wheels or the wheel rims of
your vehicle are not damaged and if necessary intervene in time.■
Under certain circumstances, the surfaces or structures of certain objects
such as wire mesh fences or powder snow cannot be detected by the system.
■
Under adverse weather conditions (heavy rain, water vapour, very low or
high temperatures etc.) system function may be limited.
CAUTION
The correct evaluation of the parking space and the parking procedure de-
pends on the circumference of the wheels on the vehicle.■
The system only works correctly if the vehicle is fitted with the wheel size
approved by the manufacturer.
■
Do without the use of the system if snow chains or a spare wheel is moun-
ted.
■
If wheels other than those approved by the manufacturer are mounted, the
resulting position of the vehicle in the parking space can differ slightly. This
can be avoided by readjusting the system at a specialist garage.
Note
We recommend performing the parking at a safe speed to about 5 km / h.Functioning
Read and observe
and on page 155 first.
Basic system operations
› The measurement and evaluation of the size of parking spaces when driving.
› The determination of the correct position of the vehicle for parking.
› The calculation of the line on which the vehicle drives backwards into the
parking space or forwards from the parking space.
› Automatic rotation of the front wheels during the parking.
The display of the instrument cluster (hereinafter only in the display) informa- tion and system messages are displayed.
When the system is activated, the warning light lights up
» Fig. 148 on
page 155 -
.
The traction control system (TCS) must always be switched on when parking.
Finding a parking space
Fig. 148
System button / display
Read and observe
and on page 155 first.
Finding a parallel parking space
›
Drive past the parking space at up to 40 km/h and a distance of 0.5 – 1.5 m.
›
Press the symbol button » Fig. 148
once .
The display shows the following » Fig. 148 -
.
Finding a perpendicular parking space
›
Drive past the parking space at up to 20 km/h and a distance of 0.5 – 1.5 m.
›
Press twice the symbol button
» Fig. 148 .
155Assist systems
The display shows the following » Fig. 148 - .
The search area for the parking space on the driver's side is automatically indi- cated on the display.
Activate the turn signal on the driver's side if you wish to park on this side of
the road. In the display the search area for the parking space is indicated on
the driver's side.
If suitable parking space is found, its parameters are stored until another suit-
able parking space has been found or until a distance of 10 m had been driven
after finding the parking space.
To change the parking mode when searching for a parking space, press the
symbol button again.
Note
If the symbol (km / h) is shown in the display , the vehicle speed should be
reduced below 40 km / hr (parallel parking) or below 20 km / hr (Transverse
parking) .
Parking
Fig. 149
Display
Read and observe
and on page 155 first.
Display Parking place recognised with the information to drive on.
Parking place recognised with the information to engage the reverse gear.
Indication for selecting the forward gear.
Indication for selecting the reverse gear.
ABCDIf the system has recognised a suitable parking space, this parking space is
shown in the display » Fig. 149 - .›
Continue driving forwards until the display appears » Fig. 149 -
.
›
Stop and make sure that the vehicle does not move forward until the start of
the parking procedure.
›
Select reverse gear or move the selector lever into position R.
›
As soon as the following message is shown in the display: Steering int. ac-
tive. Monitor area around veh.! , let go of the steering wheel. The steering
will be taken over by the system.
›
Observe the direct vicinity of the vehicle and reverse carefully.
If necessary, the parking procedure can be continued with further steps.
›
If the display of the arrow forward flashes » Fig. 149 -
, then 1 Select gear or
move the selector lever into position D.
The display shows the icon (brake pedal).
›
Depress the brake pedal and wait until the steering wheel automatically ro-
tates into the required position, the symbol goes out.
›
Carefully drive forwards.
›
If the backwards arrow is flashing in the display
» Fig. 149 -
, select reverse
gear again or move the selector lever into position R .
The display shows the icon (brake pedal).
›
Depress the brake pedal and wait until the steering wheel automatically ro-
tates into the required position, the symbol goes out.
›
Carefully move backwards.
These steps can be repeated several times one after the other.
As soon as the parking procedure is completed, an audible signal sounds and
the following message appears in the display.
Park Assist stopped. take over steering!
Automatic brake assist in speeding
If a velocity of 7 km / h is exceeded during the parking manoeuvre for the first
time, the speed will be automatically reduced by the system to less than 7 km /
h. This prevents the parking manoeuvre from aborting.
Automatic termination
The system cancels the parking procedure if one of the following cases occurs:
› A speed of 7 km / h is exceeded for the second time.
› The time limit of 6 minutes is exceeded.
› The system key is pressed.
156Driving
›The ASR system is turned off.
› There is a driver intervention in the automatic steering operation (wheel
stop).
› When there is a system fault (system temporarily not available).
› There is an automatic emergency braking.
If any of the above events occurs, the following message is dis-
played » page 157 .
Departing from a parallel parking space
Read and observe
and on page 155 first.
Manoeuvring out
›
Press the symbol button » Fig. 148 on page 155
once .
›
Activate the turn signal for side of the vehicle where the parking space is out
of which you wish to manoeuvre.
›
Select reverse gear or move the selector lever into position R.
›
As soon as the following message is shown in the display: Steering int. ac-
tive. Monitor area around veh.! , let go of the steering wheel. The steering
will be taken over by the system.
›
Observe the direct vicinity of the vehicle and reverse carefully.
›
Follow the system instructions shown in the display.
As soon as the parking procedure is completed, an audible signal sounds and
the following message appears in the information display:
Please take over steering and drive on.
Automatic termination
The system terminates the manoeuvring procedure if one of the following ca-
ses arises.
› The system key is pressed.
› The ASR system is turned off.
› There is a driver intervention in the automatic steering operation (wheel
stop).
› When there is a system fault (system temporarily not available).
› There is an automatic emergency braking.
If any of the above events occurs, the following message is dis-
played » page 157 .
Automatic emergency braking
Read and observe
and on page 155 first.
If the system detects a risk of collision during parking, automatic emergencybraking takes place to prevent a collision.
The parking is terminated by the emergency braking.
CAUTION
If the parking is aborted due to the speed exceeding 7 km / h for the second
speed, then the automatic emergency braking is not triggered by the system!
Information messages
Read and observe
and on page 155 first.
Park Assist: Speed too high.
If a speed of 50 km / h is exceeded while searching for a parking space, the
system with the key symbol is must be reactivated.
Speed too high. take over steering!
The parking is terminated if the speed exceeds 7 km / hr. Steering intervention by the driver: take over steering!
The parking procedure is terminated due to a driver steering intervention. Park Assist stopped. ASR deactivated.
The parking procedure cannot be carried out because the TCS system is deac-
tivated. Activate the TCS.
ASR deactivated. take over steering!
The parking procedure was ended because TCS was deactivated during the parking procedure.
Trailer: Park Assist stopped.
The parking procedure cannot be carried out because a trailer is hitched. Time limit exceeded. take over steering!
The parking procedure was ended because the time limit of 6 minutes was
passed.
Park Assist currently not available.
157Assist systems
Operating conditions of the systemFig. 151
Maxi DOT display: Engine is auto-
matically switched off / automat-
ic engine cut off is not possible
Read and observe on page 159 first.
For system-dependent automatic engine shutdown
to work, the following conditions must be met.
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.
No trailer is coupled.
Some additional conditions for the system to function correctly cannot be in-
fluenced or recognised by the driver. Therefore, the system can react differ-
ently in situations which are identical from the driver's perspective.
If after stopping the car, the message UNABLE TO START STOP appears in the
segment display or the
» Fig. 151 check mark appears in the MAXI DOT dis-
play, then the conditions for automatic engine shutdown are not met.
Running the engine is essential for the following reasons, for example.
› 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 capacity (high fan speed, big difference between the
desired and actual interior temperature).
Note■ If the vehicle remains outdoors for a long time in minus temperatures or in
direct sunlight, it can take several hours until the internal temperature of the
vehicle battery reaches a suitable temperature for proper operation of the
START STOP system.■
If the driver's seat belt is removed for more than approx. 30 seconds or the
driver's door is opened during stop mode, the engine will have to be started
manually.
■
After the manual engine start and with a manual gearbox the automatic en-
gine shutdown can take place only when a minimum distance required for the
system function has been covered.
Operation in vehicles with manual gearbox
Read and observe
on page 159 first.
In compliance with the operating conditions, automatic engine shutdown / au-
tomatic engine start takes place as described.
Automatic engine shutdown
›
Stop the vehicle.
›
Put the gear stick into Neutral.
›
Release the clutch pedal.
Automatic engine shutdown takes place, segment display shows START STOP
ACTIVE or a check mark appears in the MAXI DOT display
» Fig. 151 on
page 160 .
Automatic engine start
›
Depress the clutch pedal.
The automatic start procedure takes place again.
Operation in vehicles with automatic gearbox
Read and observe
on page 159 first.
In compliance with the operating conditions, automatic engine shutdown / au-
tomatic engine start takes place as described.
Automatic engine shutdown
›
Bring the vehicle to a stop and depress the brake pedal.
160Driving
Automatic engine shutdown takes place, segment display shows START STOP
ACTIVE or a check mark appears in the MAXI DOT display » Fig. 151 on
page 160 .
Automatic engine start›
Release the brake pedal.
The automatic start procedure takes place again.
Further information on automatic transmission
The automatic engine shut down takes place when the selector lever is in po-
sitions P, D , S and N and in Tiptronic mode.
When the selector lever is in position P, the engine remains shut down even
after you release the brake pedal. The engine starts automatically by pressing
the gas pedal or by moving the selector lever into a different mode and releas-
ing the brake pedal.
If the engine is off due to the automatic and the selector lever is put to the R
position then the automatic starts the engine.
If the gear selector is moved from position R to the position D, S or N, the vehi-
cle must reach a speed of more than 10 km / h before the automatic engine
shutdown starts.
There is no automatic engine shutdown when the system detects a vehicle
moving due to a large steering angle.
No automatic engine shutdown takes place when the vehicle is moving at low
speed (e.g. during a traffic jam or when tuning) and remains stationary after
pressing the brake pedal lightly. Automatic engine shutdown takes place if you
press the brake pedal down with more force.
System related automatic start-up
Read and observe
on page 159 first.
When the engine is off, the system can automatically start the engine before
the desired journey continues. Some possible reasons for this are:
› The vehicle begins to roll, e.g. on a slope.
› The brake pedal has been actuated several times.
› The current consumption is too high.
Manually deactivating/activating the systemFig. 152
Button for the START-STOP sys-
tem
Read and observe on page 159 first.
Deactivating/activating
›
Press the button
» Fig. 152 .
When start-stop mode is deactivated, the indicator light in the button lights
up.
Note
If the system is deactivated when the engine is turned off automatically, then
the automatic start process takes place.
Information messages
Read and observe
on page 159 first.
The messages and information are indicated in the instrument cluster display. Start the engine manually!
START MANUALLY
One of the conditions for automatic engine start is not satisfied or the driver's
seat belt is not fastened. The engine must be started manually.
On vehicles with the system KESSY the ignition is turned off by the first press
of the start button, only after pressing for the second time is the start process
initiated.
Error: Start-stop system
ERROR START-STOP
A system error is present. Seek help from a specialist garage.
161Assist systems
Fatigue detection (break recommendation)
Introduction
This chapter contains information on the following subjects:
Function
162
Information messages
162WARNING■ For the driving ability is always the driver's responsibility. Never drive if
you feel tired.■
The system may not detect all cases where a break is needed.
■
Therefore, take regular, sufficient breaks during long trips.
■
There will be no system warning during the so-called micro-sleep.
Note
■ In some situations, the system may evaluate the driving incorrectly and thus
mistakenly recommend a break (e.g. sporty driving, adverse weather condi-
tions or poor road conditions).■
The fatigue detection system is designed primarily for motorway driving.
Function
Read and observe
on page 162 first.
The fatigue detection system advises the driver on the basis of informationabout the steering behaviour, to take a break from driving. The system recom-
mends a break at speeds of 65-200 km/h.
After the ignition has been switched on, the system evaluates the steering be-
haviour for 15 minutes. This baseline analysis is constantly compared with the
current steering behaviour.
If the system detects deviations from normal steering behaviour due to possi-
ble fatigue of the driver, it recommends to take a break from driving.
The system deletes the stored baseline analysis if one of the following con-
ditions is met.
› The vehicle is stopped and the ignition switched off.
› The vehicle is stopped, the seat belt removed and the driver's door opened.
› The vehicle is stopped for more than 15 minutes.
If none of these conditions are met or if the driving style is not changed, the
system recommends a driving break again after 15 minutes.
Activation/deactivation
The system can be activated/deactivated via the MAXI DOT display in the Wiz-
ards menu option » page 44.
Information messages
Read and observe
on page 162 first.
In MAXI DOT display the icon appears for a few seconds and the following
message.
Fatigue detected. Take a break!
An audible signal is also emitted.
162Driving
ReplenishingRead and observe
and on page 185 first.
›
Check the oil level » page 186.
›
Unscrew the cap of the engine oil filler opening » Fig. 161 on page 184 .
›
Replenish the oil in portions of 0.5 litres in accordance with the correct speci-
fications » page 185 .
›
Check the oil level » page 186.
›
Carefully screw on the oil filler opening cap and push the dipstick in fully.
Changing
Read and observe
and on page 185 first.
The engine oil must be changed according to prescribed service intervals or ac-
cording to the service interval display » Service plan .
Coolant
Introduction
This chapter contains information on the following subjects:
Capacity
188
Checking the coolant level
188
Replenishing
188
The coolant consists of water with coolant additive. This mixture guarantees
antifreeze protection, protects the cooling/heater system against corrosion
and prevents lime formation.
Vehicles exported to countries with a mild climate are already factory-filled
with a coolant which offers antifreeze protection down to about -25 ℃. In
these countries, the concentration of coolant additive should be at least 40%.
Vehicles exported to countries with a cold climate are already factory-filled
with a coolant which offers antifreeze protection down to about -35 °C. In
these countries, the concentration of coolant additive should be at least 50%.
If a higher concentration of antifreeze is required for climatic reasons, the con-
centration of coolant additive can be increased up to a maximum of 60% (anti-
freeze protection down to approx. -40 °C).
When refilling, only use the same antifreeze identified on the coolant expan-
sion vessel » Fig. 164 on page 188 .WARNING■
The engine compartment of your car is a hazardous area. The following
warning instructions must be followed at all times when working in the en-
gine compartment » page 182.■
Do not continue your journey if for some reason it is not possible to fill
with coolant under the current circumstances
. Switch off the engine and
seek assistance from a specialist garage.
CAUTION
■ The concentration of coolant additive in the coolant must never be under
40%.■
Over 60% of coolant additive in the coolant reduces the antifreeze protec-
tion and cooling effect.
■
A coolant additive that does not comply with the correct specifications can
significantly reduce the corrosion protection.
■
Any faults resulting from corrosion may cause a loss of coolant and can con-
sequently result in major engine damage!
■
Do not fill the coolant above the mark
A
» Fig. 164 on page 188 .
■
If a fault causes the engine to overheat, we recommend visiting a specialist
garage, as otherwise serious engine damage may occur.
■
Additional headlights and other attached components in front of the air inlet
impair the cooling efficiency of the coolant.
■
Never cover the radiator - there is a risk of the engine overheating.
187Inspecting and replenishing