2015 AUDI S4 clutch

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Transmission Manual transmission
Gearshift lever
App lies to vehicles: with manual transmission
The clutch pedal must be depressed all the
way before you can start the engine.
T he manual transmission in your Audi is
equipped with an
interlock-feature.
~ Depress the clutch pedal all the way.
~ Start the eng ine with the gearshift lever in
Neutral and the clutch pedal depressed.
(D Note
Always depress the clutch pedal fully when
changing gears . Do not hold the vehicle on
a hill with the clutch pedal partially de­
pressed. This may cause premature clutch
wear or damage .
@ Tips
-Resting your hand on the gearshift lever
knob while driving will cause premature
wear in the transmission.
- The back-up lights go on when you shift
into Reverse w ith the ignition on.
Gearshift pattern (6-speed manual
transmission)
Applies to vehicles: with manual transmission
Fig. 105 Gearshift pattern : 6-speed manual transmis­
sio n
Engaging reverse gear (R)
~ Move the shift lever all the way to the left,
press it down, then push it forward . Transmission
93
Especially after driving forward, stop the vehi­
cle completely, shift into
Neutral and rest the
shift lever br iefly in Neutral before shift ing in­
to
Reverse.
multitronic., S tronic.,
tiptronic
Introduction
Applies to vehicles: with multitronic/S tronic/tiptronic
The automatic transmission is controlled elec ­
tronically. The transmission upshifts or down­
shifts automatically depending on which drive
program is selected .
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
t ion, frequent changes in speed and trave ling
at the maximum speed.
If desired, the driver can also select the gears
manually (tiptronic mode)~ page 93 .
Various automatic transmissions may be in­
stalled, depending on the model:
multitronic transmission
The multitronic transmission is a continuously
variable transmission. Power is transferred us­
ing a multidisk clutch. In contrast to conven­
tional automatic transmissions using shifting
operations, the transmission ratio in the con­
tinuously var iable 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
tiona l automatic transmissions and allow the ..,_

"" N
0 ::.,: co ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
-Do not ride the brakes or press the brake
pedal too often or too long when driving
down a hill. Constant braking causes the
brakes to overheat and substantially re­
duces braking performance, increases
braking distance or causes complete fail­
ure of the brake system.
- To prevent the vehicle from rolling back
when stopping on inclines, always hold it
in place with the brake pedal or parking
brake.
- Never hold the vehicle on an incline with
a slipping clutch. The clutch opens auto­
matically when it becomes too hot from
the overload. An indicator lamp
mJ illu­
minates and a driver message appears
¢ page 99 when the clutch is overload­
ed .
- If the engine must remain running, never
have any driving position engaged when
checking under the hood. Make sure the
selector lever has securely engaged and
is locked in P with the parking brake set
¢ page 212. Otherwise, any increase in
engine speed may set the vehicle in mo­
tion, even with the parking brake ap­ plied .
0 Note
-S tronic- and tiptronic transmission:
When stopping on an incline, do not try
to hold the vehicle in place by pressing
the accelerator pedal while a driving gear
is selected. This can cause the transmis­
sion to overheat and can damage it. Acti­
vate the parking brake or press the brake
pedal to prevent the vehicle from rolling.
- S tronic- and tiptronic transmission: Al­
lowing the vehicle to roll when the en­
gine is stopped and the selector lever is in N will damage the transmission be­
cause it is not lubricated under those cir­
cumstances .
(D Tips
For safety reasons, the parking brake is re­
leased automatically only when the driv ­
er's safety belt is engaged in the buckle.
Transmission 97
Hill descent control
App lies to vehicles : wi th mult itronic/ S tro nic/tiptro nic
The hill descent control system assists the
driver when driving down declines .
Hill descent control is activated when these­
lector lever is in D/S and you press the brake
pedal. The transmission automatically selects
a gear that is suitable for the incline. Hill de­ scent control tries to maintain the speed ach­
ieved at the time of braking, within physical
and technical limitations. It may still be nec­
essary to adjust the speed with the brakes.
Hill descent control switches off once the de­
cline levels out or you press the accelerator
pedal.
On vehicles with the cruise control system*
¢ page 91 , hill descent control is also activat­
ed when the speed is set.
.&_ WARNING
-
Hill descent control cannot overcome
physical limitations, so it may not be able
to maintain a constant speed under all
conditions. Always be ready to apply the brakes .

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Audi adaptive cru ise control and brakin g guar d 103
Vehicles with manual transmission
Applies to vehicles: with Audi adaptive cruise control
The adaptive c ruise control is avai lab le from
the 2nd gear through the 6th gea r in the cus­
tomary RPM.
When the adapt ive cruise control is turned on,
you must p ress the clutch to shift gears (as
usual) . When sh ifting normally or when press­
ing the cl utch, the adap tive c ruise control re­
mains turned on.
Afte r you have engaged the gear, you do
not
need to press the gas peda l. The adaptive
cru ise control accelerates automat ica lly if nec­
essary.
I f you press dow n on the clutch fo r too long or
shift/coup le improperly, the adaptive cruise
control may turn off automat ically.
{D) Tips
You cannot tu rn on the adapt ive cru ise
contro l during a sh ifting operation.
Audi adaptive cruise
control
Description
App lies to vehicles: with Audi adaptive cruise control
Fig. 1 16 Detect ion range
What can Audi a dapt ive crui se cont rol d o?
The adaptive cruise control works in conjunc ­
tion with a radar sensor installed in the front
of the vehicle
¢page 101, fig. 113, which is
subject to designated system limits
<=:> page 103 . Stationary objects are disregard­
ed . On open roads with no traffic, adaptive cruise
control works like a regular cruise contro l sys­
tem. The stored speed is maintained . When
approaching a moving vehicle detected up
ahead, the adaptive cruise control system au­
tomat ically slows down to match that vehi ­
cle's speed and then maintains the distance
that the driver previously stored . As soon as
the system does not detec t a vehicle up
ahead, adaptive cruise contro l ac celerates
back up to the stored speed .
Which functions can be controlled ?
When you switch adaptive cruise control on,
you can set the current speed as the "contro l
speed "
¢ page 104, Switching on and off.
When dr iving, you can stop cru ise control
¢ page 105 or change the speed ¢page 105
at any time.
You can also set the distance to the object
ahead and set the adapt ive cru ise control driv ­
ing program
¢ page 106 .

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,...., ..,., ,....,
Audi adaptive cruise control and braking guard 109
-If you restrict or switch off the ESC, the
braking guard also switches itself off
¢page 187.
- Switch braking guard off when you are
loading the vehicle onto a vehicle carrier,
tra in, ship or other type of transporta­
tion. This can prevent undesired warn­ i ngs from the braking guard system.
Messages
App lies to vehicles: with Audi adaptive cruise co ntrol
Braking guard: Off
This driver message appears if the system is
turned off via the radio/MM!*. Otherwise, if
the system is turned off, the information ap­ pears every time shortly after the start of the
tr ip.
The driver message also appears if the system is not avai lab le due to a malfunction or if the
ESC is not switched on¢
page 187. If this is
the case, the system will not provide warnings
about a possible collision.
Braking guard: Activated
This driver message appears if sharp brake
press ure was applied due to an acute warning.
•••
Three wh ite dots appear if a setting cannot be
selected with the operat ing lever . For exam­
p le , this happens if you want to raise/lower
the speed even though there was no previous­
l y saved speed .
ACC: Deactivation
The driver message appears in vehicles with
manual transmission . If the clutch pedal was
pressed down for too long, the adaptive cruise
control turns off . A chime sounds as a rem ind­
er .
ACC: Sensor blocked
This message appears if the sensor view is ob ­
structed, for example by leaves, snow, heavy
spray or dirt. Clean the sensor¢
page 101,
fig. 113.
ACC: not available
The driver message appears if there is a mal­
function . The adaptive cruise contro l turns off .
A chime sounds as a reminder. Have the sys ­
tem checked by an authori zed Aud i dea ler or
authorized Aud i Service Fac ility.
ACC: unavailable
The driver message appears if, for example,
the brake temperat ure is too high. The adap­
tive cruise control is temporarily unavailable .
A chime sounds as a reminder.
Engine speed!
This driver message appears in vehicles with
manua l transmission if the driver had not up­
shifted or downs hifted in time while using
adaptive cruise control braking or accelerat­
ing, caus ing the vehicle to exceed or no t reach
the permitted limit speed. The adaptive cruise
control turns off. A chime sounds as a remind­
er .
Shift lever position!
Vehicles with an automat ic transmission: the
driver message appears if the selecto r lever is
shifted to the N position. Th e adaptive cruise
control is no t available while in this position.
Vehicles with manua l transm ission: the driver
message appears for vehicles with manual
transmission if there is no forward gear en­
gaged, meaning if the reverse gear or the 1st
gear is engaged or if the selector leve r is in
the neutral position . The adaptive cr uise con­
trol is not available while in th is position.
Stabilization control (ESC)
This message appears if the electronic stabili­
z ation control ( ESC) is taking action to stab i­
lize the vehicle. The adaptive cruise contro l
turns off. A chime sounds as a reminder .
Speed too low
This message appears if the current speed is
too low
to set or to maintain the desired
speed .
The speed be ing saved must be at least
20 mph (30 km/h). The cruise control is
turned off for speeds lower than 12 mph

220 Check ing and filling
Do not fill coolant above the "MAX" mark. Ex­
cess coolant will be forced out through the pressure re lief valve in the cap when the en ­
g ine becomes hot.
A WARNING
- The coo ling system is under pressure and
can get very hot. Reduce the risk of
scalding from hot coolant by following
these steps.
- Turn
off the engine and a llow it to cool
down.
- Protect your face, hands and arms from
escaping fluid and steam by covering
the cap with a large, thick rag.
- Turn the cap slowly and very carefully in a co unte r-clockwise d irection while
apply ing light, downward press ure on
the top of the cap.
- To avoid being burned, do not spi ll an­
tifreeze or coolant on the exhaust sys­
tem or hot engine parts. Under certa in
conditions, the ethylene glyco l in en­
g ine coolant can ca tch f ire.
- Antifreeze is poisonous. Always store an­
t ifreeze in its original container and we ll
o ut of the reac h of children.
- If you drain the coolant, it must be
caught and safely stored in a p roper con­
ta iner clear ly ma rked "poison".
(D Note
- Do not add coolant if the expansion tan k
i s empty. A ir could enter the cooling sys­
tem and damage the eng ine. If this is
the case, do not continue driving. Seek professional assistance.
- Coolant po llutes the e nv ironment and
could cause an engine fire. Excess coo l­
ant will be forced ou t through the pres ­
su re rel ief v alve in the ca p when the en­
gine becomes hot .
- If, in an emergen cy, only water can be
added, the correct ratio be twee n wa te r
and antifr eeze¢
page 218 must be re ­
stored as soon as possib le .
{® For the sake of the environment
D rained coo lant should not be reused . A l­
ways d ispose of used coolant whi le observ­
i ng a ll environmental regulations.
Radiator fan
The radiator fan switches on automatically by
itself
T he rad iator fan is driven by the engine v ia the
V-belt. The viscous clutch regulates the spee d
of the fan acco rding to the temperature of the
coolant.
An a uxiliary electric radiator fan* sw itches on
and
off depending on coolant temperature
and othe r vehicle ope rat ing condit ions .
A ft er yo u sw itch the eng ine
off, the aux iliary
f an can continue running for up to 10 m inutes
- even wit h the ignition
off. It can even switc h
on again later by itself¢.&. , if
- t he temper ature of the engine coo lant rises
due to the heat build -up from the engine in
the engine compa rtment, or
- the engine compa rtment heats up because
the vehicle is parked in intense sunlig ht.
A WARNING ~
- To reduce the risk of perso na l inj ury nev -
er touch the radiator fan.
- The a uxiliary electric fan is tempe rat ure
contro lled and can sw itch on sud denly
even when the engine is not running.
- The a uxiliary radiator fan switches on a u­
tomatically when the engine coo lant
reac hes a certa in temperature and will
continue to ru n until the coolant temper­
ature drops.

2 70 Fuses and bulbs
No. Consumer Amps No. Consumer Amps
A/C system pressure sensor, Two-door models: rear left
electromechanical parking window regulator; Four-
brake, Homelink, automatic 11 door models: rear
left door
30
3 dimming interior rear view
5 (window regulator, central
m irror, air quality/outside locking, switch, lighting)
air sensor, Electronic Stab ili-
12 Rain
and light sensor
5
zation Control (button)
5 Sound actuator 5
Fuse panel© (red)
6 Headlight
range control/
5/7,5
head light (corner ing light)
No . Consumer Amps
3 Lumbar support 10
7 Headlight (cornering light) 7,5
4 Dynamic steering
35
Contro l modu les (electro-
5 Interior lighting (Cabriolet)
5
8 mechanical parking brake,
5
shock absorber, quattro
sport), DCDC converter
9 Adaptive cruise control 5 6
W
indshield washer system,
35
headlight washer system
7 Vehicle electrical system
20
control module 1
10 Shift gate/clutch sensor
5
11 Side ass ist 5
8
Vehicle electr ica l system
30
control module 1
12 Headlight range control,
5
parking system 9 Left rear window regulator
7,5/20
motor (Cabriolet)/sunroof
13 Airbag 5
14 Rear wiper (allroad) 15 10
Vehicle e
lectrica l system
30
control module 1
15 Auxiliary fuse (instrument
10
pane l) 11 Right
rear window regulator
7,5/20
(Cabriolet)/sun shade motor
16 Aux
iliary fuse terminal 15
40
(engine area) 12 Anti-theft alarm warning
s system
Fuse panel
@ (brown)
No. Consumer Amps
2 Brake light sensor 5
3 Fuel pump 25
4 Clutch sensor 5
5 Left seat heating with/with-
15/30
out seat ventilation
6 Electronic Stabilization
Con-
5
trol (electric)
7 Horn 15
Front left door (window reg-
8 ulator, centra
I locking, mi r-
30
ror, switch, lighting)
9 Windshield wiper motor 30
10 Electronic Stabi
lization Con-
25
trol (valves)