2013 AUDI S4 SEDAN cooling

Safety belts . . . . . . . . . . . . . . . . . . . 136
General notes . . . . . . . . . . . . . . . . . . . . 136
Why safety be lts? . . . . . . . . . . . . . . . . 137
Safety belts . . . . . . . . . . . . . . . . . . . . . 139
Safety belt pretens ioners . . . . . . . . . . 142
Airbag system ................ .
Important things to know ......... .
Front airbags ................... .
Mon itor ing the Advanced Airbag
System ........................ .
Side airbags ............. .... .. . .
Side curta in a irbags .............. .
Child Safety ........ .... ... .. . .
Impor tant th ings to know ......... .
C hi ld safety sea ts ................ .
I nstall ing a chi ld safety seat . ... .. . .
L A T CH Lower anchorages and tether
for children ... .... .... ... .. .. .. . .
Addit ional Information
Vehi cle operat ion ..... .. .. .. . .
Intelligent technology .. .. .. . .
Not ice about data recorded by vehicle
control modules .......... .... .. . .
Electronic Stabilization Control (ESC) .
Braking .. ... ................ ... .
E lect ro-mechanical power assist ,
dynamic stee ring ................ .
Driving w ith your qu attro ® ... .. .. . . 144
144
148
155
1 59
162
165
165
17 1
175
179
183
184
184
184
184
187
188
189
E nergy management . . . . . . . . . . . . . . 190
Driving and environment . . . . . 192
The first 1,000 miles (1,500 km) and
afterwards . . . . . . . . . . . . . . . . . . . . . . 192
Avoid damaging the vehicle . . . . . . . . . 192
Driving through water on roads . . . . . 192
Catalytic converter . . . . . . . . . . . . . . . . 193
Operate your vehicle econom ically and
minim ize pollution . . . . . . . . . . . . . . . . 194
Trailer towing . . . . . . . . . . . . . . . . . 196
Driving w ith a trailer . . . . . . . . . . . . . . 196
Trailer towing tips . . . . . . . . . . . . . . . . 198
Table of contents 3
Vehicle care . . . . . . . . . . . . . . . . . . .
199
Cleaning and protection . . . . . . 199
Genera l information . . . . . . . . . . . . . . 199
Care of exterior . . . . . . . . . . . . . . . . . . 199
Care of interior . . . . . . . . . . . . . . . . . . . 205
Fuel supply and filling your
fuel tank ... .. .. .. . .............
210
Gasoline . . . . . . . . . . . . . . . . . . . . . . . . 210
Fuel tank .. .. .. .. .. . .. .... ...... . 212
Checking and filling . . . . . . . . . . . 21S
Engine hood . . . . . . . . . . . . . . . . . . . . . 215
Engine compartment . . . . . . . . . . . . . . 217
E ngine oil . . . . . . . . . . . . . . . . . . . . . . . 217
E ngine cooling system . . . . . . . . . . . . . 222
B ra ke fluid . . . . . . . . . . . . . . . . . . . . . . 224
Battery . . . . . . . . . . . . . . . . . . . . . . . . . 225
Windshie ld/headlight* washer
container . . . . . . . . . . . . . . . . . . . . . . . 229
Tires and wheels . . . . . . . . . . . . . . 230
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Tire pressure monitoring system 248
Do-it-yourself service . . . . . . . . . 251
What do I do now? . . . . . . . . . . . . 251
Vehicle tool kit . . . . . . . . . . . . . . . . . . . 251
Space-saving spare tire (compact
spare tir e) . . . . . . . . . . . . . . . . . . . . . . . 251
Changi ng a wheel . . . . . . . . . . . . . . . . . 252
Fuses and bulbs . . . . . . . . . . . . . . . 258
Fuses ... .. .. .. .. .. . .. .... ...... . 258
Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Emergency situations . . . . . . . . . 262
General . . . . . . . . . . . . . . . . . . . . . . . . . 262
Starting by pushing or towing . . . . . . . 262
Star ting with jumpe r cables . . . . . . . . 262
U se of jumpe r cables . . . . . . . . . . . . . . 263
E mergency towing with commercia l
tow truck . . . . . . . . . . . . . . . . . . . . . . . 264
Lifting vehicle . . . . . . . . . . . . . . . . . . . . 266
•
•

Instrument s and warning /indicator lights 11
,&_ WARNING
- Always observe the warning in
¢ page 208, Engine compartment, be­
fore opening the hood and checking the
engine coolant level.
- Never open the engine hood if you see or
hear steam, or if you see engine coolant
dripping from the engine compartment.
You could burn yourself. Let the engine cool off first so that you cannot hear or
see any steam or engine coolant .
(D Note
-Mounting additional lights or accessories
in front of the air inlets reduces the cool­
i ng effect of the radiator. At h igh outside
temperatures or high engine load, the
engine could overheat.
- The front spo iler has been designed to
properly distribute the cooling air when
the veh icle is moving. If the spoiler is
damaged, this could reduce the cooling
effect and the engine could then over­
heat. Ask your authorized Audi dealer for
assistance.
Tachometer (engine rev counter)
The tachometer indicates the engine RPM
(revolutions per minutes).
If engine RPM d rops be low 1,500 , you should
downshift to the next lower gear. The red area
at the end of the scale indicates maximum
permissible engine RPM after the break-in pe­
riod. Before reaching this area, move these­
lector lever to position D/S or ease your foot
off the accelerator pedal.
(D Note
The tachometer needle@¢ page 10,
fig . 3
shou ld only briefly be in the red
zone: you could damage your engine! The
beg inning of the red zone varies depend­
ing on the engine.
@) For the sake of the environment
Upshifting early saves fuel and reduces en­
gine noise.
~ button
You can perform different functions with this
button.
Fig. 4 SET button in th e in strument cluste r
The !SET ! button performs the following func­
tions:
Switching on time, date, temperature
display , and odometer
The display appears for approximately 30 sec­
onds when you press the
!SET I button ¢ fig. 4
with the ignition off.
Starting the Auto-Check sequence
The Auto-Check system constantly monitors
certain individual functions and components
of the vehicle when the ignition is turned on
and when the vehicle is moving .
With the ignition turned on, you can start the "Auto-Check sequence" by pressing the
! SET !
button . You can perform an Auto-Check se­
quence when the vehicle is stationary and the
ignition is turned on or when the veh icle is
moving slower than 3 mph (5 km/h).
In addition, the number of keys init ialised for
your vehicle is disp layed .
L2 3/3 means that
three keys have been initialised. This feature
enables used car buyers to ma ke sure they
have received all of the keys.
If you are given only two keys, for instance,
you should take the vehicle and the existing
keys to an Audi dea ler to have the missing key
II>-

14 Instrum ent s and w arn ing /indic ato r light s
Engine cooling system Tire pressure monitor ing
¢ page 18
system,/
¢page249
Steering column lock Tire pressure monitoring system
¢ page 18
1181~1 ¢page249
Ignition lock
Im
Electronic power cont ro l ,/
r:::;,page 18
c:>page20
U SA mod els:
•
Malfunction indicator Lamp
Speed warning system (MIL),/
r:::;, page 79
c:> page 20
Canada models :
•
Engine speed limitation
Speed warning system c:>page 21
r:::;,page 79
Engine oil level
Aud i adapt ive cru ise control./
•
c:>page 17
¢ page 100
•
Engine o il sensor
Yellow indic ato r lights c:> page 21
Yellow symbols indicate a priority 2 ma lfunc-
-
&1
Battery
tion -Warning!
c:>page 17
Jj]
Electron ic Stabilization Control
Ill
Tank system
(ESC) ,/
c:>page 21
r:::;, page 19
-Electronic Stabilization Control
•
Warm up engine *
ti
(ESC) ./ c:>
page 211
r:::;, page 19
•
Windshie ld washer fluid level
U SA m odel s: c:>page 21
~
Anti-lock braking system (ABS)
defective ,/
m
Windshield wipers
r:::;, page 19 c:>page
21
Canada models :
le
Remote control key
[I]
Anti-lock braking system (ABS)
c:>page 75
defective ,/
r:::;, page 19
I!
Battery in remote control key
USA models: c:>page 34
I
Safety systems ,/ --
l:J
Defective light bulb warning ' r:::;, page 20
c:>page 21
Canada models :
El
Safety systems ,/
•
Fog lights
<=>page20 c:>
page 21
•
Worn brake pads
E
Rear fog light(s)*
<=> page 20
c:>page 21
•
Electromechanical parking brake
II
Headlight range control *
<=>page
77 c:> page 22

18 Instrum ent s and w arn ing /indic ato r light s
...L Engine cooling system
A malfunction in the engine cooling system
must be repaired as soon as possible .
• Turn off engine and chec k coolant le vel
If the indicator light t urns on and the mes ­
sage appears, the coo lant temperature is too
high or the coo lant level is too low.
> Pu ll off the road.
> Stop the vehicle .
> Turn off the engine.
> Check coolant level ¢ page 222.
> Add coolant if necessary¢ page 223.
> Continue driving only after the eng ine cool­
ant warn ing/ indicator light goes out .
> Contact your authorized Audi dealer for as-
s istance if necessary .
If the engine coolant level is correct, then the radiator fan may be the cause of the malfunc­
tion .
• Coolan t tempe rature! Let engine run w ith
v eh icl e s tationary
If the indicator light turns on and the mes ­
sage appears in trailer mode*, let the engine
run at idle for a few m inutes to cool down.
A WARNING
- If your veh icle should break down for
mechanical or other reasons, park at a
safe distance from moving traffic, turn
off the engine and turn on the hazard
wa rning lights ¢
page 46, Emergency
flashers.
-
- Never open the hood if you see or hea r
steam or coolant escap ing from the en­
gine compartment - you risk being scald ­
ed. Wait until you can no longer see or
hear steam or coo lant escaping .
- The engine compartment of any vehicle
is a dangerous area. Before you perform
any work in the engine compartment,
turn of the eng ine and allow it to cool.
Follow the warning stickers¢
page 208,
Engine compartment .
(D Note
Do not continue driving if the . symbol
ill um inates . There is a malfunction in the
engine cooling system -you could damage
your engine.
@ -Steering column lock
• Stee ring d efec tive ! Do not dri ve vehicle!
If the indicator light turns on and the mes­
sage appears, there is an electronic steering
column lock malfunct ion. You cannot switch
the ignit ion on .
Do
not tow yo ur vehicle because it cannot be
steered . Seek professional assista nee.
l!J:I Steering lock : Cont act de ale r!
If the indicator light turns on and the mes­
sage appears, there is an e lectronic stee ring
co lumn lock malfunct ion .
Drive to your authori zed A udi dealer immedi­
ately to have the ma lfunction corrected .
A WARNING
-
Your vehicle must not be towed in the
event of a malfunction in the elect ronic
steering co lumn lock beca use it cannot be
steered due to the loc ked steering . If it is
towed with the steering locked, there is
the r isk of an accident.
© -Ignition lock
• Ignit ion lo ck defecti ve . Contact dealer!
If the indicator light turns on and the mes­
sage appears, do
n ot switch the ignit ion off
because you may not be ab le to sw itch it on
again.
Drive to your authorized A udi dealer immedi ­
ately to have the malfunction corrected .
On vehicles with convenience key*, the engine
shou ld not be switched
off using the
I S TAR T ENGINE ST OPI button beca use the en­
gine cannot be started again after the ignition
has been switched
off. ..,.

68 Warm and cold
Warm and cold Climate controls
Description
The climate control system warms, cools and
adds humidity to the air in the vehicle interior.
It is the most effect ive when the windows and
sunroof are closed . If there is a build-up of
heat inside the vehicle, ventilation can help to
speed up the cooling process.
I n all heating mode functions except
defrost,
the blower on ly switches to a higher speed
once the engine coolant has reached a certain
temperature.
Condensat ion from the cooling system can
drip and form a puddle of water under the ve­
hicle. This is normal and does not mean there
is a leak.
Pollutant filter
The pollutant filter removes pollutants s uch
as dust and pollen from the air.
The air pollutants filter must be changed at
the intervals spec ified in you r Warranty
&
Maintenance booklet, so that the air condi­
tioner can properly work.
If you drive your vehicle in an area with h igh
a ir po llution, the fi lter may need to be
changed more frequent ly than specified in
your Aud i Wa rranty
& Ma intenance booklet. If
in doubt, ask your authorized Audi Service Ad ­
visor for advice .
Key coded settings
The climate control settings are automat ically
stored and assigned to the remote control key
that is in use.
A WARNING
Reduced visibility is dangerous and can
cause accidents.
-
- For safe driving it is very important that
all windows be free of ice, snow and con­
densation.
- Comp letely familiarize yourself with the
proper use and function of the heating
and ventilation system and especially how to defog and defrost the windows.
- Never use the windshield wiper/washer
system in freez ing weather unt il you
have warmed the windshield first, using
the heating and ventilation system. The
washer solution may freeze on the wind­ shie ld and reduce visib ility.
(D Note
- If you suspect that the air conditioner
has been damaged, switch the system
off to avoid further damage and have it
inspected by a qualified dealership.
- Repairs to the Audi air conditioner re­
quire special technical know ledge and
special tools. Contact an authorized Aud i
dea ler fo r assistance.
@ For the sake of the environment
By reducing the amount of fuel you use,
you also reduce the amount of pollutants
emitted into the air.
(D Tips
-Keep the air intake s lots (in fro nt of the
w indshield) free from ice, snow and de ­
bris in order to maintain the proper func­
tion of the climate control system.
- T he energy management system may
switch the seat heating* or rear window
defroster off temporarily . These systems
are available again as soon as the energy
balance has been restored.
- Air escapes through vents under the rear
window. When placing items of clothing
on the luggage compartment cover, en­
sure that the openings are not covered.

Warm and cold 69
Operation
We recommend pressing the IAUTO I button and setting the temperature to 72 °F (22 °C).
Fig. 70 Automatic cl imate control system: control
Fig. 71 3-zone deluxe automatic cl imate control': controls
Press the buttons to turn the functions on or
off. Use the d ials to adjust the temperature,
the blower speed and the a ir distribution. The
LE D in a button will light up when the func­
tion is switched on. The settings are displayed
for a few seconds in the radio or MMI* display.
In vehicles with a 3-zone deluxe automat ic cl i­
mate control systems *, the dr iver and front
passenger side can be adjusted separately.
The settings are also d isplayed in the climate
con trol system display.
IOFFI Switching the climate control
system on/off
The IOF FI button switches the climate control
sys tem on or off.
It also switches on when you press the knob. Airflow from
outside is
blocked when the climate control system is
switched off.
IACI Switching cooling mode on/off
The air is not coo led and humidity is not re­
moved when cooling mode is switched off.
This can cause fog on the w indows. Cooling
mode switches off automatically when the
outside temperature is be low zero.
1- 1 Switching recirculation mode on/off
In recircu lation mode, the air inside the vehi ­
cle is circulated and filtered. This prevents the
unfiltered air outside the vehicle from enter­
ing the vehicle interior. We recommend

70 Warm and cold
switching recirculation mode on when driving
through a tunnel or when sitting in traffic
c:::> &. .
The IAU TO I button or I@ FRON T I butt on
switches recircu lation mode off .
IAUTO I Switching automatic mode on
Automatic mode mainta ins a constant tem­
perature inside the vehicle. Air temperature,
airflow and air distribution are controlled au­
tomatically.
Adjusting the temperature
Temperatures between 60 °F (+16 °C) and
84 °F ( +28 °C) can be set . Outside of this
range,
LO or HI will appea r in the climate con­
trol system disp lay. At both of these settings,
the climate control system runs continuously
at maximum cooling or heating power . There
is no temperature regu lation.
~ Adjusting the airflow
You can adjust the airflow manually to su it
your needs . To have the airflow regulated au­
tomatically , press the
!AUTO ! button.
~ Adjusting the air distribution
You can manually select the vents where the
a ir will flow . To have the air d istribution regu­
lated automatically, press the
IAUTOI button .
~ Adjusting seat heating*
Pressing the button switches the seat heating
on at the highest sett ing (level 3) . The LEDs
indicate the temperature leve l. To reduce the
temperature, press the button again . To
switch the seat heating off , press the button
repeatedly until the LED turns off .
After 10 minutes , the seat heating automati­
cally switches from level 3 to leve l 2.
I@ FR ON T I Switch the defroster on/off
The windshield and s ide windows are defrost­
ed or cleared of condensation as quickly as
possible . The max imum amount of air flows
mainly from the vents below the windshield.
Recirculation mode switches off . Th e tempera­
ture is controlled automatically. T
he
!AUTO I button switches the defroster off.
l !iiil R EAR I Switching rear window heater
on/off
T he rea r window heater only operates when
the engine is running. It switches off auto­
matically after a few m inutes, depending on
the outside temperature .
T o prevent the rea r window heater from
switching off automatically, press and hold
the
l oo REAR I button for more than 2 seconds .
This remains stored until the ignition is
switched off.
Air vents
You can open and close the center and rear air
vents using the thumbwhee ls. The levers ad ­
just the direction of the airflow from the
vents.
In vehicles with a 3-zone deluxe automatic cli­
mate control system*, you can adjust the air
temperature in the rear by turning the thumb­
wheel toward the red side to make it warmer
or toward the b lue s ide to make it cooler.
A WARNING
-- Do not use the recirculation for extended
periods of time . The windows could fog
up since no fresh air can enter the vehi­
cle . If the windows fog up, press the air
recir culation butto n aga in imm ediately
to switch off the air recirculation func­
tion or se lect defrost.
- I ndivid uals w ith reduced sensitivity to
pa in or temperature could develop burns
when using the seat heating function . To
red uce the risk of injury, these individu­
als shou ld not use seat heating.
(D Note
To avoid damage to the heating elements
in the seats, do not kneel on the seats or
place heavy loads on a small area of the
seat.

196 Trailer towing
Trailer towing Driving with a trailer
General information
Your Audi was designed primarily for passen­
ger transportation .
If you plan to tow a trai ler, p lease remember
that the additional load will affect durability,
economy and performance .
Trailer towing not on ly places more stress on
the vehicle, it also calls for more concentra­
tion from the driver.
For this reason, always fo llow the operating
and driving instructions provided and use
common sense.
Technical requirements
Trailer hitch Use a weight-carrying hitch conforming to the
gross trailer weight. The hitch must be suita­
ble for your vehicle and trailer and must be
mounted securely on the veh icle's chassis at a
technically sound location. Use only a trailer
hitch with a removable ball mount. Always
check with the trailer hitch manufacturer to
make sure that you are using the correct
hitch.
Do not use a bumper hitch.
The hitch must be installed in such a way that
it does not interfere with the impact-absorb­
ing bumper system . No modifications should
be made to the vehicle exhaust and brake sys­
tems . From time to time, check that all hitch
mounting bolts remain securely fastened.
When you are not towing a trailer, remove the
trailer hitch ball mount. This prevents the
hitch from causing damage should your vehi­
cle be struck from behind
¢ A.
Trailer brakes
If your tra iler is equipped with a braking sys­
tem, check to be sure that it conforms to a ll
regulations . The trailer
hydraulic brake system must not be
direct ly connected to the vehicle's hydraulic
brake system
~ A.
Safety chains
Always use safety chains between your vehicle
and the trai le r.
Trailer lights
T railer lights must meet all regulations. Be
sure to check w ith your authorized Audi dealer
for correct wiring, sw itches, and relays.
Mirrors
If you are unable to see the traffic behind you
using the regular outside mirrors, then you
must install extended mirrors . It is important
that you
always have clear vis io n to the rear.
,8. WARNING
- If a trailer has electrical brakes please
note that these brakes are not activated
by the factory-fitted control unit -risk of
accident!
- Afte r removing the trailer hitch, do not
store it in your vehicle. In case of sudden
braking, the hitch could fly forward and
injure you or your passengers.
Operating instructions
Maximum trailer weight
-
A trailer for your vehicle is limited to a typical
class 1 or class 2 tra iler.
Trailer load distribution Be sure the load in the trailer is held secure ly
in place to prevent it from shifting forward,
backward or sideways.
Never allow a passenger to ride in a trailer
¢ A in Driving instructions on page 197.
Engine cooling system
T owing a trailer makes the engine work hard ­
er. It is important that the cooling system's
performance is up to the additional load.
Make sure that the cooling system has enough
fluid . .,..