The TCS should normally always be enabled. The system should be deactivated
only in the following situations, for example.
› When driving with snow chains.
› When driving in deep snow or on a very loose surface.
› When “rocking a car free” when it has become stuck.
Ensure the TCS is activated again afterwards.
Antilock Braking System (ABS)
First read and observe the introductory information and safety warn-
ings
on page 111.
ABS prevents the wheels locking when braking. Thus helping the driver to main-
tain 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 pressure
on the brake pedal.
Traction Control System (TCS)
First read and observe the introductory information and safety warn-
ings
on page 111.
If the wheels are slipping, the TCS adapts the engine speed to the conditions of
the road surface. The TCS makes it much easier to start off, accelerate and climb
steep hills even if the conditions of the road surface are unfavourable.
The TCS function is activated automatically each time the ignition is switched on.
If your vehicle is fitted with the ESC system, the ASR is integrated into the ESC
system » page 111 .
During an intervention of the system, the TCS warning light 1)
flashes in the in-
strument cluster.
Electronic Differential Lock (EDL)
First read and observe the introductory information and safety warn-
ings
on page 111.
If one of the wheels starts to spin, the EDL system brakes the spinning wheel and transfers the driving force to the other wheels. This ensures the stability of the
vehicle and a quick journey.
The EDL switches off automatically in order to avoid excessive heat generation
on the brake of the wheel being braked. The vehicle can continue to be driven
and has the same characteristics as a vehicle not fitted with EDL. The EDL
switches on again automatically as soon as the brake has cooled down.
Hydraulic Brake Assist (HBA)
First read and observe the introductory information and safety warn-ings
on page 111.
The HBA increases the braking effect and helps to reduce the braking distance.
The HBA is activated by the very quick operation of the brake pedal. In order to
achieve the shortest possible braking distance, the brake pedal must be applied
firmly until the vehicle has come to a standstill.
The HBA function is automatically deactivated when the brake pedal is released.
The ABS is activated faster and more effectively with the intervention of the HBA.
Hill Hold Control (HHC)
First read and observe the introductory information and safety warn-ings
on page 111.
When driving on slopes, HHC allows you to move your foot from the brake pedal
to the accelerator pedal without having to use the handbrake.
The system holds the brake pressure produced by the activation of the brakepedal for approx. 2 seconds after the brake pedal is released.
1)
Valid for vehicles without Electronic Stability Control (ESC).
112Driving
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.
Activation/deactivation
First read and observe the introductory information and safety warn-
ings
on page 113.
The system is activated automatically by engaging the reverse gear. This is con-
firmed by a brief audible signal.
The system is deactivated by disengaging reverse gear.
Note
For vehicles with a factory-fitted towing device, the system cannot be activated
when towing a trailer.
Cruise Control System
Introduction
This chapter contains information on the following subjects:
Activating/deactivating
115
Storing and maintaining speed
115
Changing the stored speed
115
Switching off temporarily
115
The Cruise Control System (CCS) maintains a set speed, more than 25 km/h, with-
out you having to actuate the accelerator pedal.
This is only possible within the range which is permitted by the power output and
braking power of the engine.
The warning light
illuminates in the instrument cluster when the cruise control
system is switched on.
WARNING■ For safety reasons, the cruise control system must not be used in dense
traffic or on unfavourable road surfaces (such as icy roads, slippery roads,
loose gravel) – risk of accident!■
The saved speed may only be resumed if it is not too high for the current
traffic conditions.
■
Always deactivate the cruise control system after use to prevent the system
being switched on unintentionally.
CAUTION
■ The cruise control system is not able to maintain a constant speed when driving
in areas with steeper gradients. The weight of the vehicle increases the speed at which it travels. In such cases, select a lower gear or brake the vehicle using the
footbrake.■
The cruise control system cannot be activated when first gear or reverse gear is
selected (vehicles with manual transmission).
■
The cruise control system cannot be activated when the selector lever is in po-
sitions P, N or R (vehicles with automatic transmission).
■
The cruise control system may automatically switch off when some brake assist
systems (e.g. ESC) intervene, when the maximum permissible engine speed is ex-
ceeded, etc.
114Driving
START-STOP
Introduction
This chapter contains information on the following subjects:
Starting/shutting down the engine
116
Operating conditions of the system
117
Manually activating/deactivating the system
117
Information messages
118
The START-STOP system helps you to save fuel while at the same time reducing
harmful exhaust emissions and CO 2 emissions.
The function is automatically activated each time the ignition is switched on.
In the start-stop mode, the engine automatically switches to the vehicle's idle phase, e.g. when stopped at traffic lights. The engine restarts automatically
where necessary.
The system can work only if the following basic conditions are 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.
WARNING■ The brake servo unit and power steering only operate if the engine is run-
ning.■
Never let the vehicle roll with the engine switched off.
CAUTION
Always deactivate the START-STOP system before driving through wa-
ter » page 109 .Note■
If the driver's seat belt is removed for more than approx. 30 seconds or the driv-
er's door is opened during stop mode on vehicles with manual transmission or au- tomatic transmission (when the selector lever in position P), the engine must be
started manually.■
After manually starting the engine on vehicles with manual transmission, auto-
matic engine shut down is not possible until the vehicle has travelled the re-
quired minimum distance for START-STOP mode.
■
If, on vehicles with automatic transmission, the selector lever positions D, S or N
are selected after driving in reverse, the vehicle will first need to achieve a speed
of over 10 km/h before automatic engine shut down can take place again.
■
Changes to the outdoor temperature can have an effect on the internal temper-
ature of the vehicle battery even after several hours. If the vehicle remains out-
doors for a long time in minus temperatures or in direct sunlight, it can take sev-
eral hours until the internal temperature of the vehicle battery reaches a suitable temperature for proper operation of the START STOP system.
■
If Climatronic is running in automatic mode, the engine may not switch off auto-
matically under certain conditions.
Starting/shutting down the engine
First read and observe the introductory information and safety warn-ings
on page 116.
Vehicles with manual transmission
›
Stop the vehicle (where necessary, apply the handbrake).
›
Put the gear stick into Neutral.
›
Release the clutch pedal.
Automatic engine shut down (STOP phase) takes place. The warning symbol
appears in the instrument cluster display.
›
Depress the clutch pedal.
The automatic start procedure takes place again (START phase). The warning
symbol
goes out.
Vehicles with automatic transmission
›
Bring the vehicle to a stop and depress the brake pedal.
Automatic engine shut down takes place. The warning symbol
appears in the
instrument cluster display.
›
Release the brake pedal.
116Driving
The automatic start procedure takes place again. The warning symbol goes
out.
Further information on automatic transmission Engine shut down takes place when the selector lever is in positions 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. Start the engine by pressing the gas pedal or by moving the selector lever into a different mode and releasing the brake pedal.
If the selector lever is moved into position R during the STOP phase , the engine
will re-start.
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.
Operating conditions of the system
First read and observe the introductory information and safety warn-ings
on page 116.
The START-STOP system is very complex. Some of the procedures are hard to check without servicing.
No engine shut down is carried out
Before each STOP phase, the system checks whether certain conditions have
been met. No engine shut down takes place in the following situations.
› The engine has not reached the minimum temperature for the START STOP
mode.
› The temperature inside the vehicle has not reached the desired temperature
set in the air-conditioning system/heating.
› The external temperature is very low/high.
› The intensive windscreen heater (Climatronic) or windscreen heater/ventilation
is switched on with the maximum air temperature setting (manual air condition-
ing system).
› The parking aid is activated.
› The charge state of the vehicle battery is too low.
› The stationary vehicle is on a steep slope or a steep downhill section.
› The idling speed is too high.
› The steering angle is too large (manoeuvring).
› The selector lever position
R is selected (e.g. when parking).
The warning symbol appears in the instrument cluster display.
The automatic start procedure takes place again
During the STOP phase, the engine fires up without any active driver intervention, e.g. in the following situations.
› The vehicle begins to roll, e.g. on a slope.
› The difference between the temperature setting of the air-conditioning sys-
tem/heating and the temperature of the interior is too large.
› The intensive windscreen heater (Climatronic) or windscreen heater/ventilation
is switched on with the maximum air temperature setting (manual air condition-
ing system).
› The brake pedal was pressed several times (the pressure in the braking system
is too low).
› The charge state of the vehicle battery is too low.
› The current consumption is too high.
Manually activating/deactivating the system
Fig. 103
Button for the START-STOP sys-
tem
First read and observe the introductory information and safety warn-
ings on page 116.
Activation/deactivation
›
Press the symbol button
» Fig. 103 .
When start-stop mode is deactivated, the warning light in the button lights up.
Note
If the system is deactivated during the STOP phase, the automatic start proce-
dure takes place.
117Assist systems
Driving with a trailerFig. 112
Swivel out the 13-pin power
socket
First read and observe the introductory information and safety warn-
ings on page 123.
Before the journey
›
Grip the 13-pin socket on the handle
A
and swing out in the direction of the
arrow » Fig. 112 .
›
Lift off protective cap
5
» Fig. 104 on page 119.
After the journey
›
Grip the 13-pin socket on the handle
A
and swing in the opposite direction to
the arrow » Fig. 112.
›
Place the protective cover
5
» Fig. 104 on page 119 onto the tow bar.
Safety eyelet
The purpose of the safety eyelet
B
» Fig. 112 is to attach the breakaway cable of
the trailer.
When attaching the breakaway cable to the safety eyelet, it must sag freely
against the vehicle in all trailer positions (sharp bends, in reverse etc.).
Exterior mirrors
You have to have additional exterior mirrors fitted if you are not able to see the
traffic behind the trailer with the standard rear-view mirrors. The national legal requirements must be observed.
Headlights
The front of the vehicle may lift up when a trailer is being towed and the head-
lights may dazzle other road users.
Adjust the headlights using the headlight beam control » page 41.
Driving speed
For safety reasons, do not drive faster than 80 km/h when towing a trailer.
Immediately reduce your speed as soon as even the slightest swaying of the trail-
er is detected. Never attempt to stop the trailer from “swaying” by accelerating.
Brakes
Apply the brakes in good time! If the trailer is fitted with a trailer brake, apply the
brakes gently at first, then brake firmly. This will avoid brake jolts resulting from
the trailer wheels locking.
On downhill sections shift down a gear in good time to also use the engine as a brake.
Engine overheating
If the needle for the coolant temperature gauge moves into the right-hand area
or the red area of the scale, the speed must be reduced immediately.
Stop and switch off the engine if the indicator light
in the instrument cluster
starts to flash » page 16. Wait a few minutes and check the level of cool-
ant » page 169 .
The following guidelines must be observed » page 16.
The coolant temperature can be reduced by switching on the heating.WARNING■ Never use the safety eyelet for towing!■Adapt your speed to the conditions of the road surface and to the traffic sit-
uation.■
Improper or incorrectly connected electric cables can energise the trailer and
cause functional faults to the vehicle's entire electrical system as well as acci-
dents and severe injuries.
■
Work on the electrical system must only be carried out by specialist garages.
■
Never directly connect the trailer's electrical system with the electrical con-
nections for the tail lights or other current sources.
Note
■ After coupling the trailer and connecting the power socket, check that the rear
lights on the trailer are working correctly.■
If there is an error in the trailer lighting, check the fuses in the fuse box in the
dash panel » page 197.
124Driving
■Contact between the breakaway cable and the safety eyelet can result in me-
chanical wear on the surface protection of the eyelet. Such wear does not impair
the functioning of the safety eyelet and does not constitute a fault. It is excluded from the warranty coverage.■
If you tow a trailer frequently, you should also have your vehicle inspected be-
tween service intervals.
■
The handbrake on the towing vehicle must be applied when coupling and un-
coupling the trailer.
Anti-theft alarm system
First read and observe the introductory information and safety warn-
ings
on page 123.
When the vehicle is locked, the alarm is activated when the electrical connection
to the trailer is interrupted.
Always switch off the anti-theft alarm system before a trailer is coupled or uncou- pled » page 36 .
Conditions for including a trailer in the anti-theft alarm system. The vehicle is factory-fitted with an anti-theft alarm system and towing de-
vice.
The trailer is electrically connected to the towing vehicle via the trailer sock-
et.
The electrical system of the vehicle and trailer is functional.
The vehicle is locked with the vehicle key and the anti-theft alarm system is
activated.
Note
For technical reasons, trailers with rear LED lights cannot be connected to the an-
ti-theft alarm system.
125Towing a trailer
Safety
Passive Safety
General information
Introduction
This chapter contains information on the following subjects:
Safety equipment
126
Before setting off
126
What influences the driving safety?
127
In this section you will find important information, tips and notes on the subject
of passive safety in your vehicle.
We have combined everything here which you should be familiar with, for exam- ple, regarding seat belts, airbags, child seats and safety of children.
WARNING■ This chapter contains important information on how to use the vehicle for
the driver and his occupants.■
You can find further information on safety concerning you and those travel-
ling with you in the following chapters of this owner's manual.
■
The complete on-board literature should always be in the vehicle. This ap-
plies in particular, if you rent out or sell the vehicle.
Safety equipment
First read and observe the introductory information and safety warn-ings
on page 126.
The following list contains only part of the safety equipment in your vehicle.
› Three-point seat belts for all the seats.
› Belt force limiters for the front seats.
› Belt tensioners for the front seats.
› Seat belt height adjusters for the front seats.
› Front airbag for the driver and the front passenger.
› Side airbags.
› Head airbags.
› Anchoring points for child seats using the ISOFIX system.
› Anchoring points for child seats using the TOP TETHER system.
› Head restraints adjustable for height 1)
.
› Adjustable steering column.
The specified safety equipment works together, in order to optimally protect you and those travelling with you in accident situations.
The safety equipment does not protect you or the people travelling with you, if
you or your occupants adopt an incorrect seated position or the equipment is not
correctly adjusted or used.
If the seat belt is not fastened properly, this may result in injuries if an airbag is
activated in the event of an accident.
Before setting off
First read and observe the introductory information and safety warn-
ings
on page 126.
For your own safety and the safety of the people travelling with you, please pay
attention to the following points before setting off.
› Ensure that the lighting and the turn signal system are functioning properly.
› Check the tyre inflation pressure.
› Ensure that all of the windows offer good visibility to the outside.
› Secure all items of luggage
» page 64.
› Ensure that no objects can obstruct the pedals.
1)
Not valid for sports seat.
126Safety
WARNINGInformation for the front passenger■Maintain a distance of at least 25 cm to the dash panel. Not maintaining this
minimum distance will mean that the airbag system will not be able to proper-
ly protect you – risk to life!■
Always keep your feet in the footwell when the car is being driven – never
place your feet on the dash panel, out of the window or on the surfaces of the
seats. You will be exposed to increased risk of injury when braking or in the
event of an accident. If an airbag is deployed, you may suffer fatal injuries
when adopting an incorrect seated position!
Correct seated position for the driver
Fig. 113
The correct distance of the driver to the steering wheel/correctly
adjusted head restraint
First read and observe the introductory information and safety warn-ings
on page 127.
For your own safety and to reduce the risk of injury in the event of an accident,
we recommend the following setting.
› Adjust the steering wheel so that the distance
A
» Fig. 113 between the steer-
ing wheel and your chest is at least 25 cm.
› Adjust the driver’s seat in the forward/back direction so that the pedals can be
fully depressed with slightly bent legs.
› Adjust the seat backrest so that the highest point of the steering wheel can be
reached with your arms at a slight angle.
› Adjust the head restraint such that the top edge of the head restraint is at the
same level as the upper part of your head 1)
B.
› Correctly fasten the seat belt
» page 130, Using seat belts .
Driver seat adjustment » page 53, Adjusting the front seats .
Correct seated position for the front passenger
First read and observe the introductory information and safety warn-ings
on page 127.
For the safety of the front passenger and to reduce the risk of injury in the event
of an accident, we recommend the following setting.
› Position the front passenger seat back as far as possible. The front passenger
must maintain a distance of at least 25 cm to the dash panel so that the airbag
offers the greatest possible safety if it is deployed.
› Adjust the head restraint such that the top edge of the head restraint is at the
same level as the top of your head 1)
B
» Fig. 113 on page 128.
› Correctly fasten the seat belt
» page 130, Using seat belts .
In exceptional cases the front passenger airbag can be deactivated » page 139,
Deactivating airbags .
Front passenger adjustment » page 53, Adjusting the front seats .
Correct seated position for the passengers in the rear seats
First read and observe the introductory information and safety warn-
ings
on page 127.
To reduce the risk of injury in the event of a sudden braking manoeuvre or an ac-
cident, the occupants on the rear seats must observe the following.
› Adjust the head restraint such that the top edge of the head restraint is at the
same level as the top of your head
B
» Fig. 113 on page 128 » page 128.
› Correctly fasten the seat belt
» page 130, Using seat belts .
› Use a suitable child restraint system if transporting children in the vehi-
cle » page 142 , Transporting children safely .
1)
Not valid for sports seat.
128Safety