2015 AUDI A6 clutch

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Automatic Transmission
multitronic, 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 se lected .
When a
moderate driving style is used, the
transmission selects the most economical
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 als o se lect the gears
manually (tiptronic mode) q page 111.
Various automatic transmissions may be in­
stalled , depending on the model:
multitronic transmission
The multitron ic transmission is a continuously
variable transmission. Power is transferred us­
ing a multidisk clutch . In contrast to conven­
tional automat ic transm iss ions using shift ing
ope rat ions, the transmiss ion ratio in the con­
tinuously variab le transmission is changed
continuously. This optimizes the comfort level
and conserves fuel.
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 converter used in conven­
tional automatic transm issions and allow the
vehicle to accelerate without a noticeable in­
terruption in traction.
Automatic Transmission 107
tiptronic transmission
In the tiptronic transmission, power is trans­
ferred by a torque converter.
Selector lever positions
Fig. 114 Disp lay in the instrument cluster: selector
l ever positio n
The selector lever position engaged appears
next to the se lector lever as we ll as in the in­
strument cluster display.
P- Park
In this selector lever position the transmis­
sion is mechanically locked. Engage P on ly
when the vehicle is
completely stopped q .&.
in Driving the automatic transmission on
page 110.
To shift in or out of positio n P, you must first
press and hold the brake pedal and then press
the re lease button in the selector lever handle
while moving the selector lever to or from P.
You can shift out of this position only with the
ignition on.
R - Reverse
Select R only when the vehicle is at a full stop
and the engine is running at idle speed i:> & in
Driving the automatic transmission on
page 110 .
Before you move the se lector lever to R, press
both the button in the handle of the selector
lever
and the brake pedal at the same time .
When the ignition is on, the backup lights illu­
minate when the selector lever is moved into
R. ..,.

110 Automatic Tran sm iss ion
multitronic transmission : Your vehicle is
equipped with
hill hold assist allowing you to
start while on an incline. The system is acti­
vated when the brake pedal is pressed down
and held
f o r a few s econds . The brake pres­
sure will hold for
a moment after the brake
pedal loosens to prevent the veh icle from roll­
ing backwards whi le starting up .
A WARNING
- The veh icle can also roll when the engine
is stopped.
- Unintended veh icle movement can cause
serious injury .
- Never leave your vehicle with the eng ine
running wh ile in gea r. If you must leave
yo ur 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 whee ls
when the engine is running at idle . To
prevent the vehicle from "creeping", you
must keep your foot on the brake when
the engine is running and the selector
lever is in D/S or R or "tiptronic" mode is
selected.
- Do not press the accelerator pedal when
changing the selector lever pos ition
wh ile the vehicle is stat io nary and the
engine is running .
- Never shift into R or P wh ile driving .
- Before driv ing down a steep slope, re-
duce your speed and shift into a lower
gear with "tiptronic" .
- Do not ride the brakes or press the brake
pedal too often or too long when dr iving
down a hill. Constant braking causes the
brakes to overheat and substant ially re­
duces b raking performance, inc reases
braking distance or causes comp lete fail­
ure of the brake system.
- T o prevent the veh icle from rolling back
when stoppi ng on incl ines, always hold it
in place with the brake peda l or parking
brake.
- Never hold the veh icle on an incl ine with
a slipping clutch. The clutch opens auto ­
matically when it becomes too hot from the overload. An indicato
r lamp
ml illu­
minates and a driver message appears
¢ page 112 when the clutch is overload­
ed.
- If the engine must remain running, never
have any driving posit io n engaged when
checking under the hood . Make sure the
selector lever has securely engaged and is locked in P w it h the park ing brake set
¢ page 222 . Otherwise, any increase in
eng ine speed may set the vehicle in mo­
tion, even with the parking brake ap­ plied .
(D Note
-S tronic- and tiptronic transmission :
When stopping on an incl ine , do not try
t o hold the vehicle in place by pressing
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.
- S tronic- and tiptronic transmission : A l­
lowing the vehicle to ro ll when the en­
gine is stopped and the selector lever is
in N will damage the transmission be­
cause it is not l ubricated unde r those cir­
cumstances.
{!) Tips
For safety reasons, the parking brake is re­
l eased automatically only when the d riv­
er's safety belt is engaged in the buckle.
Hill descent control
The hill descent control system assists the
driver when driving down declines.
Hill descent contro l is activated when these ­
lector lever is in D/S and you press the brake
pedal. The transmission automatically selects
a gear that is su itable fo r the incline. H ill de­
scent contro l tries to ma inta in the speed ach­
ieved at the time o f braking, within phys ica l
and technical limitations. If may sti ll be nec -
essary to adj ust the speed with the brakes . ..,..