
Automatic gearbox
96
the right. In the positions D and S the gear you have already engaged will be addition-
ally displayed on the display.
- Parklock
The driven wheels are locked mechanically in this position.
The Parklock must only be engage d when the vehicle is stationary .
If you wish to move the selector lever into or out of this position, you must press the
Shiftlock button in the handle of the selector lever and at the same time depress the
brake pedal.
- Reverse gear
Reverse gear must only be engaged when the vehicle is stationary and the engine
idling .
The brake pedal must be depressed and at the same time the Shiftlock must be
pressed, if you wish to obtain the selector lever positions R, P or N.
When the ignition is switched on an d the selector lever is in position R, the reverse
lights will come on.
- Neutral
The transmission is in Neutral in this position.
The brake pedal must be depressed (if the le ver is in its position for longer than 2
seconds) in order to move the selector lever out of the position N into the position D,
with the ignition switched on, on a vehicle travelling at less than 5 km/hour or on a
stationary vehicle.
- Position for driving forward
When the selector lever is in this position , the forward gears are shifted up and down
automatically in line with engine lo ad, vehicle speed and the dynamic shift
programme.
You must depress the brake pedal if you wish to move into position D from N when the
vehicle is travelling at less th an 5 km/hour or is stationary .
In certain circumstances (e.g. when driving in mountainous regions or when towing a
trailer) it may be beneficial to select the manual shift programme page 98 for a short
time in order to adapt the gearbox rati os manually to the driving situations. - Position for sporty style of driving
Shifting up later into a higher gear makes it possible to fully exploit the power potential
of the engine. The gearbox also then shifts down at higher engine speeds as in the posi-
tion D.
The gearbox does not shift into the 6th gear in the position S, because the maximum
speed is reached with the 5th gear
9).
The Shiftlock on the selector lever grip mu st be pressed when moving the selector
lever out of the position D into the position S.
WARNING
Never move the selector lever into position R or P when driving - risk of an
accident!
When the engine is running and the vehi cle is stationary, it is necessary to
hold the car with the brake pedal in all the positions of the selector lever (except
P and N) since the power transmission is never completely interrupted, also not
when the engine is idling - the vehicle creeps.
You must on no account unintentionally operate the throttle (e.g. by hand
from the engine compartment) if a driv e position is engaged when the car is
stationary. The vehicle would otherwise immediately start off - also when the
handbrake is firmly applied - risk of an accident!
You must move the selector lever into position P and firmly apply the hand-
brake first before you or any other person opens the bonnet and starts working
on the engine when it is running - risk of accident! It is also essential to observe
all warnings page 162, “Working in the engine compartment”.
Selector lever lockAutomatic selector lever lock
With the ignition on, the selector lever is locked when it is in the positions P and N. You
must first of all depress the brake pedal in or der to move the selector lever out of this
position. The warning light
page 30 lights up in the instrument cluster as a
reminder for the driver when the selector lever is in position P or N.
APARANAD
9)Not valid for vehicles with automatic gearbox DSG.AS
s16g.4.book Page 96 Wednesda y, February 10, 2010 3:53 PM

Automatic gearbox97
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Praktik
Technical Data
A time delay element ensures that the selector lever is not blocked when rapidly
switching over the position
N (e.g. from R to D). This does, for example, allow one to
seesaw out a stuck vehicle. The selector lever lo ck will click into place if the lever is in
the N position for more than 2 seconds without the brake pedal being pressed.
The selector lever lock is only active if the vehicle is stationary or moving at speed of
less than 5 km/hour. The lock is swit ched off automatically into position N when the
car is travelling at a higher speed.
Shiftlock button
The Shiftlock button in the hand le of selector lever prevents certain selector lever posi-
tions being engaged inadvertently. The selector lever lock is cancelled when you press
the Shiftlock button.
Keylock - Ignition key withdrawal lock
You can only withdraw the ignition key after switching off the ignition if the selector
lever is in position P. If the ignition key is withdrawn, the selector lever is blocked in
position P.
Kickdown function
The kickdown function provides you with maximum acceleration
power.Fully depressing the accelerator pedal allows the kickdown function to be activated in
the desired driving program. This function has precedence over the driving
programme and serves for maximum acceleration of the vehicle when exploiting the
maximum power potential of the engine wi thout taking into account the current
selector lever position ( D, S or Tiptronic ). The gearbox shifts down to one or several
gears in line with the driving state 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.
WARNING
Please note that using the kickdown function can result in the driven wheels
spinning on a smooth or slippery road surface - risk of skidding!
Dynamic shift programmeThe automatic gearbox of your vehicle is controlled electronically. Shifting up and
down through the gears is performed automatically on the basis of pre-defined driving
programmes.
Adopting a moderate style of driving will cause the gearbox to select the most
economical driving programme. Shifting up into a higher gear as soon as possible and
shifting down as late as po ssible will have a favourable effect on your fuel consump-
tion.
Adopting a sporty style of driving with rapid movements of the accelerator pedal
combined with sharp acceleration and freque nt changes in speed, exploiting the top
speed of the car or depressing the accelerator pedal (kickdown function), will cause
the gearbox to switch over to this style of driving and shift down earlier with frequent
changes in gears in comparison to the moderate style of driving.
Selecting the most appropriate driving programme for the particular style of driving is
a continuous process. Irrespective of this it is, however, possible to switch or shift down
into a dynamic shift programme by depressi ng the accelerator rapidly. The gearbox
shifts down into a lower gear matching the speed of the car and this allows you to
accelerate rapidly (e.g. when overtaking) without having to depress the accelerator
pedal fully into the kickdown range. The or iginal programme will be reactivated to
match your particular styl e of driving once the gearbox has shifted up again.
When driving in hilly regions, the gears are selected to match uphill and downhill
sections. This avoids the gearbox frequently shifting up and down when negotiating an
uphill stretch. When driving downhill, it is possible to shift down into the Tiptronic
position, in order to exploit the engine brake torque.
s16g.4.book Page 97 Wednesda y, February 10, 2010 3:53 PM

Automatic gearbox
98
Tiptronic
The Tiptronic allows the driver to also shift gears manually.Fig. 98 Manual shifting: Selector lever / large information displayThe selector lever position you have engaged is indicated in the information display of
the instrument cluster together with the engaged gear fig. 98 on the right.Switching over to manual shifting– Push the selector lever to the right out of position D. After switching over, the
current engaged gear is indicated in the display.Shifting up gears– One-touch forward of the selector lever (in the Tiptronic position) fig. 98 .Shifting down gears– One-touch back of the selector lever (in the Tiptronic position) .
It is possible to switch over to manual both when the car is stationary and also when
driving.
When you accelerate, the gearbox shifts up automatically into the higher gear just
before the maximum permissible engine speed is reached.
If you select a lower gear, the automatic gearbox does not shift down until there is no
risk of the engine overrevving.
If you operate the kickdown function, the gearbox shifts into a lower gear in line with
the vehicle speed and engine speed.
Emergency programme
An emergency programme exists in the event of a fault in the system.The gearbox operates in a corresponding emergency programme if there are func-
tional faults in the gearbox electronics. This is indicated by all of the segments in the
display lighting up or going out.
A functional fault can ha ve the following effect:
The gearbox only shifts into certain gears.
The reverse gear R cannot be used.
The manual shift programme (Tiptronic) is switched off in the emergency mode.
If the gearbox has switched over to emergency mode, drive to the nearest
specialist garage in order to have the fault rectified.
Selector lever-emergency unlockingIn case of interruption of the power supply (e.g. flat vehicle battery, defective fuse) or
defect of the selector lever lock, the select or lever can no longer be shifted from the
position P in the normal way and the vehicle ca n no longer be moved. The selector
lever must be unlocked in case of emergency.
– Apply the handbrake firmly.
– Carefully pull up the front left and right cover.
– Pull up rear cover.
– Use the finger to press the yellow plastic part downwards fig. 99 .
A+
A-
Fig. 99 Selector lever-emergency
unlocking
s16g.4.book Page 98 Wednesda y, February 10, 2010 3:53 PM

Automatic gearbox99
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Praktik
Technical Data
– Simultaneously press the shiftlock button in
the handle of the selector lever in the
position N
10).
Tow-starting and towing vehicle Tow-starting a vehicle
It is not possible to tow-start vehicles fitted with automatic gearbox page 188.
you can use jump-start cables connected to the battery of another vehicle for starting
your car if the vehicle battery is flat page 187.
Towing a vehicle
Please pay attention to the following information if it comes necessary to tow-in your
car page 188.10)If the selector lever is moved again into the position P, it is once again blocked.
s16g.4.book Page 99 Wednesday, February 10, 2010 3:53 PM

Intelligent Technology
136
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 31, “Brake system ”.
WARNING
Only 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 jeop-
ardy.
When retrospectively mounting a front spoiler, solid wheel hubs etc. one
must ensure that the air supply to the front wheel brakes is not reduced other-
wise the braking system could run too hot.
Allow for the fact that new brake pads do not achieve their full braking effi-
ciency until approximately 200 kilometres. New brake pads must be first “run
in” before they develop their optimal friction force. You can, however, compen-
sate for this slightly reduced braking force by increasing the pressure on the
brake pedal. This guideline also applie s to any new brake pads installed at a
future date.Caution
Never allow the brakes to rub by applying sl ight pressure if you do not wish to brake
the vehicle. This causes the br akes to overheat and can also result in a longer braking
distance and excessive wear.
Before negotiating a steep downhill sectio n, please reduce your speed and shift
down into the next lower gear (manual gear box) or select a lower driving stage (auto-
matic gearbox). This enables you to make full use of the braking power of the vehicle
and reduces the strain on the brakes. Any ad ditional braking should be done intermit-
tently, not continuously.Note
The brake light flashes automatically in case of an emergency braking at speeds greater
than 60 km/h or with the intervention of th e ABS, which lasts longer than 1.5 seconds.
After the speed was reduced below 10 km/h or the vehicle was stopped, the brake light
stops flashing and the hazard warning light system switches on. The hazard warning
light system is switched off automatically after accelerating or driving off again.
Brake boosterThe brake booster boosts the pressure whic h you generate with the brake pedal. The
necessary pressure is only genera ted when the engine is running.
WARNING
Never switch off the engine befo re the vehicle is stationary.
The brake booster only operates when the engine is running. Greater phys-
ical effort for braking is required when en gine is switched off. Because if you do
not stop as normal, this can cause an accident and severe injuries.
Antilock brake system (ABS)ABS prevents the wheels locking when braking.General
The ABS contributes significan tly to enhancing the active safety of your vehicle.
Compared to a vehicle not fitted with the ABS brake system, you are able to retain
optimal steering ability even during a full br ake application on a slippery road surface
because the wheels do not lock up.
You must not expect, however, that the braking distance will be shorter under all
circumstances as a result of the ABS. The braking distance for example on gravel and
fresh snow, when you should anyway be driv ing slowly and cautiously, will be longer.
Operating principle
As soon as the vehicle speed has increased to about 20 km/hour an automatic test
procedure is conducted during which you will be able to hear a pumping noise for
about 1 second.
The brake pressure will be reduced on a wheel which is rotating at a speed which is too
low for the speed of the vehicle and tending to lock. This control cycle is noticeable
from a pulsating movement of the brake pedal which is accompanied by noises.
This is consciously intended to provide the driver with the information that the wheels
are tending to lock (ABS control range). You must always keep the brake pedal
depressed to enable the ABS to optimally control the brake application in this braking
range. Never interrupt the application of the brakes!
s16g.4.book Page 136 Wednesda y, February 10, 2010 3:53 PM

Driving and the Environment141
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Praktik
Technical Data
Driving and the EnvironmentThe first 1 500 kilometres and then afterwardsA new engine
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, that is 3/4 of
the maximum permissi ble engine speed.
– Do not use full throttle.
– Avoid high engine revolutions.
– Do not tow a trailer.From 1 000 up to 1 500 kilometres– Increase the power output of the engine gradually up to the full speed of the gear
engaged, that is up to the maxi mum permissible engine revolutions.
During the first operating hours the engine ha s higher internal friction than later until
all of the moving parts have harmonized. Th e driving style which you adopt during the
first approx.1 500 kilometres plays a decisive part in the success of running in your
vehicle.
You should not drive at unnecessarily high engine revolutions even after the
running-in period is complete . The maximum permissible en gine speed is marked by
the beginning of the red zone on the scale of the revolutions counter. Shift up into the
next higher gear on a vehi cle fitted with manual gear box before the red zone is
reached. During acceleration (depressing the accelerator) exceptionally high engine
speeds are automatically reduced, yet the engine is not protected against too high
engine speeds which are caused by incorrectly shifting down the gears resulting in a
sudden increase of the engine speeds above the permitted maximum revolutions
which can lead to engine damage.
For a vehicle fitted with a manual gearbox the converse situation also applies: Do not
drive at engine revolutions which are too low. Shift down as soon as the engine is no
longer running smoothly.
Caution
All the speed and engine revolution figures ap ply only when the engine is at its normal
operating temperature. Never rev up an engine which is cold, neither when the vehicle
is stationary nor when driving in individual gears.
For the sake of the environment
Not driving at unnecessari ly high engine revolutions and shifting to a higher gear as
early as possible are ways to minimise fuel consumption, operating noise levels as well
as protects the environment and contributes to a longer life and reliability of the
engine.New tyresNew tyres have to be “run in” since they do not offer optimal grip at first. You should
take account of this fact for the first 500 kilometres and drive particularly carefully.New brake padsAllow for the fact that new brake pads do no t achieve their full braking efficiency until
approximately 200 kilometres. New brake pads must be first “run in” before they
develop their optimal friction force. You ca n, however, compensate for this slightly
reduced braking force by increasing the pressure on the brake pedal.
This guideline also applies to any new brake pads installed at a future date.
During the running-in pe riod, you should avoid excessive stresses on the brakes. This
includes, for example, violent braking, part icularly from very high speeds, and also
when crossing mountain passes.
s16g.4.book Page 141 Wednesda y, February 10, 2010 3:53 PM

Driving and the Environment143
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Praktik
Technical Data
guidelines given in this chapter in order to
make best use of these characteristics and
to maintain their effectiveness.
Looking ahead when driving
A vehicle's highest fuel consumption occurs it accelerates.Avoid accelerating and braking unnecessarily. If you drive with forsight you will not
need to brake so often and will also then not have to accelerate so much. Let your
vehicle coast to a stop, for example, if this is possible, when you see that the next set of
traffic lights is at red.Shifting gears and saving energy
Shifting up early saves on fuel.Fig. 129 Fuel consumption / Shift recommendation for changing gearsManual gearbox– Drive no more than about one length of your vehicle in first gear.
– Shift up into the next higher gear at approx. 2 000 to 2 500 revs.Automatic gearbox– Depress the accelerator pedal slowly. Do not depress it beyond the kickdown
position, however.
An effective way of achieving good fuel economy is to shift up early. You will consume
more fuel if you drive at unnecessaril y high revolutions in any given gear. The
fig. 129 shows the ratio of fuel consumption to the speed of your vehicle in the
relevant gear. Fuel consumption in 1st gear is the highest. The consumption is the
lowest in the highest gear.
You will achieve good fuel economy by shif ting up early and shifting down late.
Shift recommendation for changing gears*
An information for the engaged gear fig. 129 is shown in the display of the
instrument cluster.
In order to minimise the fuel consumptio n, a recommendation for shifting into
another gear is indicated in the display.
If the control unit recognises that it is appropriate to change the gear, an arrow is
shown in the display. The arrow points up or down, depending on whether it is recom-
mended to shift into a higher or lower gear.
At the same time, the recommended gear is indicated instead of the currently engaged
gear .
Note
Also use the information supplied by the multi-functional indicator* page 18.Avoiding full throttle
Driving more slowly means saving fuel.Sensitive use of the accelerator will not only significantly reduce fuel consumption but
also positively influence environmenta l pollution and wear of your vehicle.
AA
AB
AA
Fig. 130 Fuel consumption in litres/100
km. and speed in km/h.
s16g.4.book Page 143 Wednesday, February 10, 2010 3:53 PM

Driving and the Environment147
Using the system
Safety
Driving Tips
General Maintenance
Breakdown assistance
Praktik
Technical Data
This particularly applies to
models with a lowered suspen sion (sport suspension) and
also when your vehicle is fully laden.
Driving through bodies of water on roadsIn order to avoid damage to the vehicle, for example when driving through flooded
roads, observe the following:
Determine the depth of the water when driv ing through bodies of water. The water
can reach at the maximum the web on the lower sill of the vehicle fig. 132 .
Drive no more than at walking speed. At a higher speed, a water wave can form in
front of the vehicle which can cause water to penetrate into the air induction system of
the engine or into other parts of the vehicle.
Never let the vehicle stand in the water, never drive backwards and do not switch
off the engine.
WARNING
Driving through water, mud, sludge etc. can reduce the braking power and
extend the braking distance - risk of accident!
Avoid sudden and severe braking manoeuvres immediately after driving
through bodies of water.
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
purpose 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 bodies of water, pa rts of the vehicle such as the engine,
gearbox, catalytic converter, chassis or electrics can be severely damaged.
Oncoming vehicles can generate water waves which ca n exceed the permissible
water level for your vehicle.
Potholes, mud or rocks can be hidden under the water making it difficult or impos-
sible to drive through the body of water.
Do not drive through salt water. The salt can lead to corrosion. Immediately rinse
all the parts of the vehicle, which came into contact with the salt water, with fresh
water.Note
After driving through a body of water, we recommend that the vehicle is checked by a
specialist garage.
Fig. 132 Crossing bodies of water
s16g.4.book Page 147 Wednesda y, February 10, 2010 3:53 PM