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Fatigue detection (break recommendation)
Introduction
This chapter contains information on the following subjects:
Function
168
Information messages
168WARNING■ 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, in adverse weather conditions,
or in bad road conditions).■
The fatigue detection system is designed primarily for motorway driving.
Function
First read and observe the introductory information and safety warn-ings
on page 168.
The fatigue detection system advises the driver on the basis of information about
the steering behaviour, to take a break from driving. The system recommends 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 possible
fatigue of the driver, it recommends to take a break from driving.
The system deletes the stored baseline analysis if one of the following condi-tions is met.
› The vehicle is stopped and the ignition is turned off.
› The vehicle is stopped, the seat belt is taken off and the driver's door is opened.
› The vehicle is stopped for more than 15 minutes.
If none of these conditions is met or the driving style is not changed, the system
recommends a driving break again after 15 minutes.
The system can be activated/deactivated in the Infotainment » operating instruc-
tions for Infotainment , chapter Vehicle settings (CAR button) .
Information messages
First read and observe the introductory information and safety warn-
ings
on page 168.
The icon appears and the following message for a few seconds in the display of the instrument cluster .
Driver alert. Take a break!
DRIVER ALERT TAKE A BREAK
An audible signal is also emitted.
168Driving
WARNING“Quick-charging” the vehicle battery is dangerous and requires a special
charger and specialist knowledge.
CAUTION
On vehicles with the START/STOP system, the pole terminal of the charger must
not be connected directly to the negative terminal of the vehicle battery, but only
to the engine earth » page 244, Jump-starting in vehicles with the START-STOP
system .
Note
We therefore recommend that vehicle batteries be rapid charged by a specialist
garage.
Replacing
First read and observe the introductory information and safety warn-
ings
on page 224.
When replacing a battery, the new vehicle battery must have the same capacity,
voltage, amperage and be the same size. Suitable vehicle battery types can be
purchased from a specialist garage.
We recommend having the battery replaced by a specialist garage, where the
new vehicle battery will be installed properly and the original battery will be dis-
posed of in accordance with national regulations.
Disconnecting and reconnecting
First read and observe the introductory information and safety warn-
ings
on page 224.
On disconnecting and reconnecting the vehicle battery, the following functions
are initially deactivated or are no longer able to operate fault-free:
OperationOperating measureElectrical power window (operational faults)» page 49Enter the radio/navigation system code num-
ber» Operating instructions for Info-
tainment Radio or » Operating
instructions for Infotainment
NavigationSetting the clock» page 14Data in the multifunction display are deleted» page 29
Note
We recommend having the vehicle checked by a specialist garage in order to en-
sure full functionality of all electrical systems.
Automatic load deactivation
First read and observe the introductory information and safety warn-ings
on page 224.
The vehicle voltage control unit automatically prevents the battery from discharg-
ing when the bettery is subjected to heavy loads. This manifests itself by the fol-
lowing.
› The idling speed is raised to allow the generator to deliver more electricity to
the electrical system.
› Where appropriate large convenience consumers, e.g. seat heaters, rear win-
dow heaters, have their power limited or in case of emergency shut off com-
pletely.
CAUTION
■ Despite such intervention by the vehicle electric system management, the vehi-
cle battery may be drained. For example, when the ignition is switched on a long
time with the engine turned off or the side or parking lights are turned on during longer parking.■
Consumers which are supplied via a 12 V socket can cause the vehicle battery to
discharge when the ignition is switched off.
Note
Driving comfort is not disrupted by any shutting off of consumers. Often the driv-
er is not aware of it having taken place.
227Inspecting and replenishing
690 kg
730 kg
775 kg
Speed symbol
This indicates the maximum permissible vehicle speed with mounted tyres for the respective category.
130 km/h
160 km/h
170 km/h
180 km/h
190 km/h
200 km/h
210 km/h
240 km/h
270 km/h
300 km/h
CAUTION
The information about the load index and the speed symbol for your vehicle are
listed in your vehicle documents.
Unidirectional tyres
First read and observe the introductory information and safety warn-
ings
on page 228.
The direction of rotation of the tyres is marked by arrows on the wall of the tyre.
The indicated direction of rotation must be adhered to in order to obtain the best
benefits from the characteristics of these tyres.
These characteristics are mainly. › Increased driving stability.
› Reduced risk of aquaplaning.
› Reduced tyre noise and reduced tyre wear.
959799MQRSTUHVWYTyre control displayFig. 191
Button for setting the tyre infla-
tion pressure control value
First read and observe the introductory information and safety warn-
ings on page 228.
Calibration
After changing the tyre inflation pressure » page 229, in section Introduction ,
after changing one or several wheels, the position of a wheel on the vehicle or
when the warning light lights up while driving, a calibration of the system must
be carried out as follows:
›
Inflate all of the tyres to the specified inflation pressure » page 229.
›
Switch on the ignition.
›
Start the system calibration.
On vehicles with Infotainment » Operating instructions for Infotainment , chap-
ter Vehicle settings (CAR button) .
On vehicles with the radio preinstallation .
›
Press the symbol button
» Fig. 191 for longer than 2 seconds.
While pressing the button,
the warning light comes
on. At the same time,
the system memory is cleared and the new calibration process is started. This is
confirmed by an acoustic signal followed by the warning light
going off.
If the warning light
does not go out after the calibration, this indicates a sys-
tem fault. Seek help from a specialist garage.
Tyre pressure indicator
The warning light
lights up when any of the following conditions are true.
› The tyre inflation pressure is low.
› The structure of the tyre is damaged.
› The vehicle is loaded on one side.
231Wheels
›The wheels of one axle are loaded more heavily (e.g. when towing a trailer or
when driving uphill or downhill).
› Snow chains are mounted.
› The spare wheel is mounted.
› One wheel per axle was changed.
For vehicles with Infotainment 1)
it can be determined which tyres should be
checked » Manual Infotainment , chapter Vehicle settings (key CAR) .WARNING■
When the warning light illuminates, immediately reduce the speed and
avoid sudden steering and brake manoeuvres. Stop the vehicle as soon as
possible and inspect the tyres and their inflation pressure.■
Under certain circumstances (e.g. sporty style of driving, wintry or unpaved
roads) the may light up after a delay, or not at all.
CAUTION
■
The tyre control display does therefore not replace the regular tyre inflation
pressure control, as the system cannot detect an even loss of pressure.■
The system cannot warn in case of very rapid tyre inflation pressure loss, e.g. in
case of sudden tyre damage. In this case carefully bring the vehicle to a standstill
without sudden steering movements or sharp braking.
■
To ensure a proper functioning of the tyre control display, it is necessary to re-
peat the basic setting every 10000 km or once a year.
Spare wheel
Fig. 192
Luggage compartment: Spare
wheel
First read and observe the introductory information and safety warn-
ings on page 228.
The spare wheel is located in a well under the floor covering in the boot and is
fixed in place with a special bolt » Fig. 192.
Take out wheel
›
Open the boot lid.
›
Raise the floor covering in the boot » page 99.
›
Remove the box with the tool kit.
›
Pull out safety lock
1
» Fig. 192 in the direction of the arrow.
›
Unscrew the
2
bolt in a counterclockwise direction.
›
Remove the wheel.
Store wheel away
›
Place the replaced wheel into the spare wheel well with the wheel rim pointing
downward.
›
Screw in bolt
2
» Fig. 192 in a clockwise direction, until the wheel is secure.
›
Insert safety lock
1
» Fig. 192 in the opposite direction to which the arrow is
pointing.
›
Place the box with the tool kit back into the spare wheel and secure it with the
tape.
›
Fold back the floor covering in the boot » page 99.
›
Shut the boot lid.
Install a wheel having the appropriate version and dimensions as soon as possi-
ble.
If the dimensions or design of the spare wheel differ from the tyres fitted to the
vehicle (e.g. winter tyres or low-profile tyres), it must only be used briefly in the
event of a puncture and if an appropriately cautious style of driving is adop-
ted »
.
Temporary spare wheel
A yellow warning label is displayed on the rim of the temporary spare wheel.
Please note the following if you intend to use the temporary spare wheel. › The warning label must not be covered after installing the wheel.
› Be specially attentive when driving.
› The inflation pressure for the temporary spare wheel is identical to the maxi-
mum inflation pressure of the standard tyres.
› Only use this temporary spare wheel to reach the nearest specialist garage, as it
is not intended for long-term use.
1)
Does not apply to vehicles with the Infotainment Blues and Swing system.
232General Maintenance
Winter operation
Introduction
This chapter contains information on the following subjects:
Winter tyres
234
Snow chains
234
Winter tyres
First read and observe the introductory information given on page 234.
The handling of your vehicle will be significantly improved when driving on wintry
roads if you fit winter tyres. Summer tyres on ice, snee and at temperatures be-
low 7 °C have less grip. This is especially true of low-profile tyres or high-speed
tyres .
To achieve the best possible handling properties, winter tyres must be fitted on
all 4 wheels, the minimum tread depth must be 4 mm and tyres must be no older than 4 years.
Winter tyres of a lower speed category can be used provided that the permissible
maximum speed of these tyres is not exceeded even if the possible maximum
speed of the vehicle is higher.
The winter tyre speed limit is set in the Infotainment system » Operating instruc-
tions for Infotainment , chapter Vehicle settings (CAR button) .
For the sake of the environment
Fit the summer tyres on again in good time as they provide better handling prop-
erties, a shorter braking distance, less tyre noise, and reduced tyre wear on roadswhich are free of snow and ice as well as at temperatures above 7 °C. The fuelconsumption is also lower.
Snow chains
First read and observe the introductory information given on page 234.
When driving on wintry roads, snow chains improve not only traction, but also the
braking performance.
Snow chains must only be mounted on the front wheels.
For technical reasons, it is only permissible to fit snow chains with the following wheel/tyre combinations.
Wheel sizeDepth (D)Tyre size6J x 15 a)43 mm195/65 R156J x 16 b)48 mm205/55 R166J x 17b)48 mm205/50 R17a)
Only fit snow chains with links and locks not larger than 13 mm.
b)
Only fit snow chains with links and locks not larger than 12 mm.
CAUTION
■
The chains must be removed when driving on roads which are free of snow.
They adversely affect the handling of your vehicle, damage the tyres and are rap-
idly destroyed.■
Remove the full wheel trims before installing the snow chains.
234General Maintenance
Technical data
Technical data
Vehicle data
Introduction
This chapter contains information on the following subjects:
Vehicle identification data
263
Dimensions
265
Vehicle-specific information depending on engine type
267
The details given in the vehicle's technical documentation always take prece-
dence over the details in the Owner's Manual.
The listed performance values were determined without performance-reducing
equipment, e.g. air conditioning system.
Vehicle identification data
Fig. 236
Vehicle data sticker/type plate
First read and observe the introductory information given on page 263.
Vehicle data sticker
The vehicle data sticker » Fig. 236 - is located underneath the floor covering in
the boot.
The vehicle data sticker contains the following data: Vehicle identification number (VIN)
Vehicle type
Gearbox code/paint number/interior equipment/engine output/engine code Partial vehicle description
Operating weight (in kg) Fuel consumption (in ltr./100 km) - intra-urban/extra-urban/combined
CO 2 emission levels - combined (in g/km)
The indicated positions
5
,
6
and
7
on the vehicle data sticker are only valid for
some countries.
Type plate
The type plate » Fig. 236 -
is located at the bottom of the B-pillar on the driv-
er's side.
The type plate lists the following weights: Maximum permissible gross weight
Maximum permissible towed weight (towing vehicle and trailer)
Maximum permissible front axle load
Maximum permissible rear axle load
Vehicle identification number (VIN)
The vehicle identification number - VIN (vehicle body number) is stamped into the
engine compartment on the right hand suspension strut dome. This number is al- so located on a sign on the lower left hand edge below the windscreen (together
with a VIN bar code).
The VIN can also be displayed in Infotainment » Operating instructions for Info-
tainment , chapter Setting vehicle systems (CAR button) .
Engine number
The engine number (three-digit identifier and serial number) is stamped on the engine block.
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