D - Mode for forwards travel (normal programme)
In mode D, the forward gears are automatically changed according to the engine
load, accelerator pedal actuation and driving speed.
The brake pedal must be depressed before setting into position D from position
N .M
- Manual gearshift (Tiptronic)
Further information » page 72.
Manual gearshift (Tiptronic)
Fig. 72
Selector lever: manual shifting/instrument cluster: engaged gear
First read and observe the introductory information and safety warn- ings
on page 71.
Tiptronic mode makes it possible to manually shift gears on the selector lever.
The gearshift indicator must be observed when changing gear » page 12.
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 insert into position M. The selector lever position you
have engaged appears in the instrument cluster display
1
» Fig. 72 .
Shifting up gears
›
Press the selector lever forwards
+
» Fig. 72 .
Shifting down gears›Press the selector lever backwards - » Fig. 72 .
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 riskof the engine overrevving.
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 69, Information on braking .
Starting-off and driving
First read and observe the introductory information and safety warn-
ings
on page 71.
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. 71 on page 71 and insert into position D .
›
Release the brake pedal and accelerate.
Stop
›
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.
Parking
›
Fully depress and hold the brake pedal and bring the vehicle to a stop.
›
Firmly apply the handbrake.
›
Move the selector lever to the right in the direction of the arrow » Fig. 71 on
page 71 into position N .
Kick-down
The Kick-down function allows you to achieve the maximum acceleration of your
vehicle while driving.
72Driving
When the accelerator pedal is fully depressed, the Kick-down function is activated
in any forward driving mode.
The gearbox shifts down one or more gears depending on the vehicle speed and engine speed, and the vehicle accelerates.
The gearbox does not shift up into the highest gear until the engine has reached
its maximum revolutions for this gear range.WARNINGRapid acceleration, particularly on slippery roads, can lead to loss of vehicle
control – risk of accident!
Operational faults
First read and observe the introductory information and safety warn-
ings
on page 71.
In the event of a fault in the automatic gearbox, warning lights may light up in the instrument panel » page 20,
Automated transmission
.
Emergency programme
The transmission switches to the emergency programme, if there is a fault in the
automatic transmission.
Indications of an activated emergency programme include the following.
› Only certain gears are selected.
› The reverse gear
R cannot be used.
Gearbox overheating
The gearbox may become too hot due to frequent repeated starting or stop-and-
go traffic, for example.
The vehicle does not start off after engaging the selector lever position
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.
Running in
Introduction
This chapter contains information on the following subjects:
New engine
73
New tyres
74
New brake pads
74
New engine
First read and observe the introductory information given on page 73.
The engine has to be run in during the first 1 500 kilometres.
Up to 1 000 kilometres
›
Do not drive faster than 3/4 of the maximum speed of the gear in use, i.e. 3/4 of
the maximum permissible engine speed.
›
No full throttle.
›
Avoid high engine speeds.
›
Do not tow a trailer.
From 1 000 up to 1 500 kilometres
Gradually increase the power output of the engine up to the full speed of the
gear engaged, i.e. up to the maximum permissible engine speed.
The red scale of the rev counter indicates the range in which the system beginsto limit the engine speed.
During the first operating hours the engine has higher internal friction than later until all of the moving parts have harmonized. The driving style which you adopt
during the first approx.1 500 kilometres plays a decisive part in the success of running in your car.
Never drive at unnecessarily high engine speeds even after the running-in period.
On vehicles fitted with a manual gearbox, at the very latest shift up into the next
gear when the red area is reached. Observe the recommended gear » page 12,
Recommended gear . Very high engine speeds when accelerating (accelerator) are
automatically restricted »
.
73Starting-off and Driving
CAUTIONAll the speed and engine revolution figures apply only when the engine is at its
normal operating temperature.
Looking ahead
First read and observe the introductory information and safety warn-
ings
on page 74.
A vehicle's highest fuel consumption occurs when accelerating, therefore unnec-
essary accelerating and braking should be avoided. If looking ahead when driving, less braking and consequently less accelerating are required.
If possible, let your vehicle coast to a stop, or use the engine brake, if you can see that the next set of traffic lights is on red, for example.
Economical gear changing
Fig. 73
Principle sketch: Fuel consump-
tion in litres/100 km depending
on the selected gear
First read and observe the introductory information and safety warn-
ings on page 74.
Shifting up early saves on fuel.
Manual gearbox › Drive no more than about one length of your vehicle in first gear.
› Shift up into the next gear at approx. 2000 rpm.
An effective way of achieving good fuel economy is to shift up early. Observe the
recommended gear » page 12, Recommended gear .
A suitably selected gear can have an effect on fuel consumption » Fig. 73.
Automatic gearbox
› Slowly
apply the accelerator pedal. However, do not depress it to the Kick-down
position » page 72 .
› An economic driving programme is automatically selected if the accelerator ped-
al is only depressed slowly.
Avoiding full throttle
Fig. 74
Principle sketch: Fuel consump-
tion in litres/100 km. and speed
in km/h.
First read and observe the introductory information and safety warn-
ings on page 74.
Driving more slowly saves fuel.
Sensitive use of the accelerator will not only significantly reduce fuel consump- tion but also positively influence environmental pollution and wear on your vehi- cle.
The maximum speed of your vehicle should ideally never be used. Fuel consump-
tion, pollutant emissions and vehicle noises increase disproportionally at high
speeds.
The » Fig. 74 shows the ratio of fuel consumption to the speed of your vehicle.
Fuel consumption will be halved if you drive at only three-quarters of the possible top speed of your vehicle.
Reducing idling
First read and observe the introductory information and safety warn-
ings
on page 74.
Idling also costs fuel.
75Starting-off and Driving
In vehicles not equipped with the START-STOP system, turn off the engine when
in a traffic jam, at a level crossing or traffic lights with longer wait times.
Even after just 30 – 40 seconds you will have saved more fuel than that is needed
when you start the engine up again.
If an engine is only idling it takes much longer for it to reach its normal operating
temperature. Wear-and-tear and pollutant emissions, though, are particularly
high in the warming-up phase. Therefore, start driving as soon as the engine has
started, High engine speeds should however be avoided.
Avoiding short distances
Fig. 75
Principle sketch: Fuel consump-
tion in l/100 km at different tem-
peratures
First read and observe the introductory information and safety warn-
ings on page 74.
Short distances result in an above-average high fuel consumption. We therefore
recommend avoiding distances of less than 4 km if the engine is cold.
A cold engine consumes the most fuel immediately after the start. Fuel consump-tion drops to 10 litres/100 km after just 1 kilometre. The consumption stabilises
once the engine and catalytic converter have reached their operating tempera- ture.
An important factor in this connection is also the ambient temperature. The im-
age » Fig. 75 shows the different levels of fuel consumption after driving a certain
distance at a temperature of +20 °C and at a temperature of -10 °C.
The vehicle has a higher fuel consumption in winter than in summer.
Checking tyre inflation pressure
First read and observe the introductory information and safety warn-ings
on page 74.
Tyres which are correctly inflated save fuel.
Always ensure the tyre inflation pressure is correct. If the inflation pressure is too
low, the tyres will have to overcome a higher rolling resistance. This will not only increase fuel consumption but also tyre wear and the driving behaviour will wor-
sen.
Always check the tyre inflation pressure when the tyres are cold.
Avoiding unnecessary ballast
First read and observe the introductory information and safety warn-
ings
on page 74.
Transporting ballast costs fuel.
Each kilogramme of weight increases the fuel consumption. Therefore, we rec-
ommend to carry no unnecessary weight.
It is particularly in town traffic, when one is accelerating quite often, that the ve-
hicle weight will have a significant effect upon the fuel consumption. A rule of
thumb here is that an increase in weight of 100 kilograms will cause an increase in fuel consumption of about 1 litre/100 kilometres.
At a speed of 100 - 120 km/h, your vehicle that is fitted with a roof rack crossmember without a load will use about 10 % more fuel than normal due to the in-
creased aerodynamic drag.
Regular maintenance
First read and observe the introductory information and safety warn-
ings
on page 74.
A poorly tuned engine uses an unnecessarily high amount of fuel.
By having your vehicle regularly maintained by a specialist garage, you create the conditions needed for economical driving. The maintenance state of your vehicle has a positive effect on traffic safety and value retention
76Driving
NoteYou can find more detailed information about the trade-in and recycling of old
cars from a specialist garage.
Avoiding damage to your vehicle
Introduction
This chapter contains information on the following subjects:
General information
78
Driving through water on streets
78
General information
First read and observe the introductory information given on page 78.
Pay attention to low-slung parts of the vehicle, such as the spoiler and exhaust,particularly in the following situations.
› When driving on poorly maintained roads and paths.
› When driving over kerbs.
› When driving on steep ramps, etc.
Particular attention is required for vehicles with sport suspension and when the vehicle is fully laden.
Driving through water on streets
Fig. 76
Driving through waterFirst read and observe the introductory information given on page 78.
The following instructions must be observed if vehicle damage is to be avoided
when driving through water (e.g. flooded roads).
›
Determine the depth of the water before driving through.
The water level must not reach above the bar on the lower beam » Fig. 76.
›
Do not drive any faster than at a walking speed.
At a higher speed, a water wave can form in front of the vehicle, which can cause
water to penetrate into the engine's air induction system or other parts of the ve-
hicle.
›
Never stop in the water, do not reverse and do not switch the engine off.
›
Deactivate the START-STOP system before driving through water » page 85,
START-STOP .
WARNING■
Driving through water, mud, sludge etc. can impair the braking power and
extend the braking distance – risk of accident!■
Avoid abrupt and sudden braking immediately after water crossings.
■
After driving through bodies of water, the brakes must be cleaned and dried
as soon as possible by intermittent braking. Only apply the brakes for the pur-
pose of drying and cleaning the brake discs if the traffic conditions permit this.
Do not place any other road users in jeopardy.
CAUTION
■ When driving through water, some parts of the vehicle such as the engine,
gearbox, chassis or electrics can be severely damaged.■
Oncoming vehicles can generate water waves which can exceed the permissible
water level for your vehicle.
■
Potholes, mud or rocks can be hidden under the water making it difficult or im-
possible to drive through the body of water.
■
Do not drive through salt water. The salt can lead to corrosion. Any vehicle parts
that have come into contact with salt water must be rinsed immediately with
fresh water.
78Driving
START-STOP
Introduction
This chapter contains information on the following subjects:
Starting/shutting down the engine
85
Operating conditions of the system
85
Manually activating/deactivating the system
86
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.
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 78 .Note■
If the driver's seat belt is removed for more than 30 seconds or the driver's door
is opened during stop mode, the engine must be started manually with the key.■
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-STOPmode.
■
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.
Starting/shutting down the engine
First read and observe the introductory information and safety warn-ings
on page 85.
›
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.
Operating conditions of the system
First read and observe the introductory information and safety warn-ings
on page 85.
The START-STOP system is very complex. Some of the procedures are hard tocheck 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.
85Assist systems
›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 windscreen defroster / ventilation is switched on at the maximum air tem-
perature (air conditioning) setting.
› 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 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 windscreen defroster / ventilation is switched on at the maximum air tem-
perature (air conditioning) setting.
› 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. 80
Button for the START-STOP sys-
tem
First read and observe the introductory information and safety warn-
ings on page 85.
Activation/deactivation
›
Press the symbol button » Fig. 80 .
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.
City Safe Drive
Introduction
Fig. 81
Laser sensor/detection range
This chapter contains information on the following subjects:
Activation/deactivation
88
Laser sensor
88
Special driving situations
89
The City Safe Drivesystem uses the laser sensor » Fig. 81 –
to take readings
about the traffic situation in front of the vehicle at a range of around 10 metres (11
yards) » Fig. 81 –
in a vehicle speed range of 5 - -30 km/h (3 - -19 mph).
If the driver does not respond to an imminent collision, the City Safe Drive system
can automatically apply the brakes to the vehicle to prevent a possible collision.
86Driving
In the following situation, it is possible that the tank cannot be fully filled with
natural gas.
› At very high ambient temperatures. The natural gas refuelling systems have
overheating protection. When the ambient temperature reaches a predefined value, the refuelling system automatically switches off.
› If the refuelling system has been in operation for a longer period, the filling
pressure of the natural gas refuelling system slightly drops.WARNING■ Stop the engine before refuelling.■Always switch off your mobile phone, do not smoke and do not use open
flames when refuelling with natural gas – risk of explosion!■
When refuelling, never get into the vehicle. If you have to get into your vehi-
cle in exceptional cases, close the door and touch a metal surface before you
touch the filling coupling again. This will avoid electrostatic discharges, which
may generate sparks. Sparks can cause a fire during refuelling.
■
Natural gas is highly explosive and flammable. Incorrect refuelling or improp-
er handling of natural gas can cause a fire, an explosion and injuries.
Note
■ The natural gas system of your vehicle is suitable both for fuelling from small
compressors (slow fuelling) and for fuelling from natural gas stations with large
compressors (quick fuelling).■
Noises that occur during refuelling represent no risk.
■
If the vehicle is parked for a longer period of time immediately after refuelling,
the situation may arise in which the pointer of the fuel tank gauge does not indi- cate exactly the same level as was the case immediately after refuelling when theengine is restarted. This is not due to any system leakages but a drop in pressurein the natural gas fuel tank due to technical reasons after a cooling phase directly
after refuelling.
■
For frequent short-haul traffic, especially at low outside temperatures, the vehi-
cle is driven more frequently in petrol mode than in natural gas mode. This is why the petrol tank runs empty faster than the natural gas tank.
■
The capacity of the natural gas tank is about 11 kg, of which about 1.5 kg are a
reserve.
■
The capacity of the petrol tank is about 10 l, of which about 5 l are a reserve.
Automatic switching from CNG to petrol mode
First read and observe the introductory information and safety warn-
ings
on page 123.
The vehicle automatically switches over from CNG mode to petrol mode when the following conditions are met:
› when starting the engine, if the coolant temperature is below 15 °C,
› when the natural gas tank is empty,
› after refuelling with natural gas.
Natural gas as fuel
First read and observe the introductory information and safety warn-ings
on page 123.
Natural gas is an alternative fuel for motor vehicles. Its main component is meth-
ane (CH 4). The rest is carbon dioxide and lower hydrocarbons.
The strict legal requirements for exhaust emissions of motor vehicles are decisive for the current significance of natural gas. In direct comparison to all other fossil
fuels, natural gas is one of the fuels which cause the lowest emissions.
Natural gas is odourless and lighter than air. For safety reasons, it is saturated
with odorous substances, so that is perceived even in very small amounts.
Regular gas system checks
First read and observe the introductory information and safety warn-ings
on page 123.
Every two years, the following inspections must be carried out:
› Check the condition of the fuel filler cap, filler neck and sealing ring, and clean
sealing ring if necessary.
› Check gas system for leaks.
The following checks must be carried out every four years: › Check gas tank mounting for secure attachment and possible damage.
The gas tank must be filled prior to the regular gas system check.
125Inspecting and replenishing