2015 AUDI S7 clutch

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Automatic Transmission
S tronic, tiptronic
Introduction
The automatic transmission is controlled elec­
tronically. The transmission upsh ifts or down­
shifts automatically depending on which drive
program is selected.
When a
moderate driving style is used, the
transmission selects the most econom ica l
driving mode. It will then change up early and
delay the downshifts to give better fuel econ­
omy.
The transmission switches to a sporty mode
after a kick-down or when the driver uses a
sporty driving style characterized by quick ac­
celerator pedal movements, heavy accelera­
tion, frequent changes in speed and traveling
at the maximum speed.
If desired, the driver can also select the gears
manually (tiptronic mode) ¢ page 113.
Various automatic transmissions may be in­
stalled, depending on the model :
S tronic transmission
The S tronic is a dual-clutch transmission.
Power is transferred using two clutches that
work independently from one another . They
replace the torque convert er used in conven­
tional automatic transmissions and allow the
veh icle to accelerate without a noticeable in­
terruption in traction.
tiptronic transmission
In the tiptronic transmission, power is trans­
ferred by a torque converter .
Automatic Transmission 109
Selector lever positions
Fig. 118 D isp lay in the instrument clus te r: se le ctor
lever pos itio n
The selector lever position engaged appea rs
next to the selector lever as well as in the in­
str ument cluster display.
P- Park
In this selector lever position the transm is­
s ion is mechanica lly locked . Engage P only
when the vehicle is
completely stopped Q .&.
in Driving the automatic transmission on
page 111.
To shift in or out of posit ion P, you must first
press and hold the brake pedal and then press
the release button in the selector lever handle
whi le moving the selector lever to or from P.
You can shift out of this position on ly with the
ignit ion on .
R- Reverse
Select R only when the vehicle is at a full stop
and the engine is running at idle speed ¢.&. in
Driving the automatic transmission on
page 111.
Before you move the selector lever to R, press
both the button in the hand le of the selec tor
lever
and the brake pedal at the same t i me .
When the ignition is on, the backup lights illu­
minate when the selector lever is moved into
R.
N -Neutral
The transmission is in neutral in this pos ition .
Sh ift to th is position for standing with the
brakes applied
¢.&. in Driving the automatic
transmission on page 111. ..,.

112 Automatic Tran sm iss ion
-Never leave your vehicle with the engine
running while in gear. If you must leave
your vehicle when the engine is running, act ivate the park ing brake and move the
selector lever to P.
- Power is st ill transmitted to the wheels
when the eng ine is running at idle . To
prevent the vehicle from "creeping", you
must keep your foot on the brake when
the engine is runn ing and the selecto r
lever is in D/S or R or "tiptronic" mode is
selected .
- Do not press the accelera tor pedal when
changing the selector lever pos ition
whi le the vehicle is stationary and the
engine is running.
- Never shift into
R or P whi le driving.
- Before driv ing down a steep slope , re-
duce you r speed and shift into a lower
gear with "tiptronic".
- Do not ride the brakes or press the brake
peda l too often or too long when dr iving
down a hill. Constant braking causes the
brakes to overheat and substant ially re­
duces braking per formance, increases
braking distance or causes complete fail­
ure of the brake system.
- To prevent the veh icle from rolling back
when stopping on inclines, always hold it in place with the brake peda l or parking
brake .
- Never hold the veh icle on an incline with
a slipping clutch . The clutch opens auto ­
matically when it becomes too hot from
the overload . An indicator lamp@] illu­
minates and a dr iver message appears
9 page 114 when the clutch is overload­
ed.
- If the engine must remain running, never
have any driv ing pos ition eng aged when
check ing under the hood. Make sure the
selector lever has secure ly engaged and
is locked in P with the parking brake set
9 page 225. Otherwise, any increase in
engine speed may set the vehicle in mo­
t io n, even with the park ing brake ap ­
plied .
(D Note
-When stopping on an incline, do not try
to hold the vehicle in place by press ing
the acce lerator pedal while a driving gear
is se lected. This can cause the transmis­
sion to overheat and can damage it . Acti ­
vate the parking brake or press the brake
peda l to prevent the vehicle from roll ing .
- Allowing the vehicle to roll when the en ­
gine is stopped and the selecto r lever is
in N will damage the transmission be­
cau se it is not l ubricated unde r th ose cir­
c umstances.
(D Tips
Fo r safety reasons, the pa rking brake is re­
l eased automatically o nly when t he d riv­
er's safety belt is eng aged in the buckle.
Hill descent control
The hill descent control system assists the
driver when driving down declines.
Hill descent cont rol is activated when these­
lector lever is in D/S and yo u press the brake
peda l. The transmission automa tical ly selects
a gear tha t is suitable fo r the incline. H ill de ­
scent cont ro l tries to ma inta in the speed ach ­
ieved at the time of braking, within physica l
and tec hnical lim itations. If may sti ll be nec­
essary to ad just the speed with the brakes.
Hill descent cont ro l sw itches off once the de ­
cline leve ls o ut or yo u press the acce lerator
pedal.
On vehicles with the cru ise cont ro l system *
9 page 84 , hill descent control is also activa t­
ed when the speed is set.
A WARNING ,____ -
Hill descent control cannot overcome
physica l lim itations, so it may not be ab le
to maintain a constant speed under all
conditions . A lways be ready to apply the
brakes .