2015 AUDI S4 warning lights

200 Trailer towing
Tire pressure
When towing a trai le r, inflate the tir es of your
vehicle to the cold tire pressure listed under
"Full load" on the label located on the driver 's
side B-pillar (visible when the door is open).
Inflate trailer tires to trailer and tire manufac ­
turers' specifications.
Lights
The headlight settings should be checked with
the trailer attached before dr iving off. Check
to make sure both vehicle and tra iler lights
are working properly.
Safety chains
Be sure trailer safe ty cha ins are properly con­
nected from the trailer to the hitch on the ve­
hicle. Leave eno ugh slack in the chains to per ­
mit turning corners. When you install safety
cha ins, make sure they w ill not drag on the
road when you are driving.
The chains shou ld cross under the trai ler
tongue to prevent it from dropping in case of
separation from the hitch.
Driving instructions
Driving with a trailer always requires extra
care and consideration.
To obtain the best possible handling of vehicle
and trai ler, p lease note the following:
.,. Do not tow a loaded trailer when your car it­
self is not loaded .
.,. Be especia lly careful when passing other
vehicles .
.,. Observe speed limits .
.,. Do not drive at the maximum permissible
speed.
.,. Always apply brakes early.
.,. Monitor the temperature gauge.
Weight distribution
Towing a loaded trai ler with an empty car re­
sults in a highly unstable distribution of
weight . If this cannot be avo ided, drive at very
low speeds only to avoid the risk of losing
steering control. A "ba
lanced" rig is easier to operate and con­
tro l. This means that the tow vehicle should
be loaded to the extent possible and permissi­
ble, while keep ing the trai ler as light as possi­
ble under the c ircumstances. Whenever poss i­
ble, transfer some cargo to the luggage com ­
partment of the tow veh icle while obse rving
tongue load requi rements and vehicle load ing
considerations.
Speed
The higher the speed, the more d iff icu lt it be­
comes for the driver to control the rig. Do not
drive at the maximum permissible speed. Re­
duce your speed even more if load, weather or
wind conditions are unfavorable -pa rticularly
whe n going downhill.
Reduce veh icle speed
immediately if the trail­
er shows the slightest s ign of sway ing.
Do not
try to stop the swaying by accelerating.
Observe speed limits . In some areas, speeds
for vehicles tow ing tra ilers are lower than for
regular vehicles .
Always apply brakes early. When driving
downh ill, shift into a lower gear to use the en ­
gine braking effect to slow the vehicle. Use of
the brakes alone can cause them to overheat
and fail.
Coolant temperature
The coolant temperature gauge c> page 10
must be observed carefully . If the needle
moves close to the upper end of the scale, re­
duce speed immediately and/or turn off the
air conditioner.
If the coolant temperature warning light •
i n the i nstrument cluster starts flashing, pull
off the road, stop and let the engine
idle for
abo ut two minutes to prevent heat build-up .
_& WARNING
Anyone not properly restrained in a mov­
ing vehicle is at a much greater risk in an
accident . Never let anyone ride in your car
who is not p roper ly wea ring the restraints
provided by Audi.
-

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Vehicle care and cleaning 205
Component Situation Solution
Te xtile s,
Stains adhering to Vacuum cleaner
Vinyl, the surface
Alcantara Water-based stains Absorbent cloth and mild soap solutiona>
such as coffee, tea, blood, etc.
Oil-based stains Apply a mild soap solutiona>, blot away the d issolved oil
such as oil, make- or dye, treat afterward w ith water, if necessary
up, etc.
Special stains such Special stain remover, blot with absorbent material,
as ballpoint pen, treat afterward with mild soap solutiona>, if necessary
na il polish, latex
pa int, shoe polish,
etc.
Natural leather Fr es h stains Cotton cloth with a mild soap solutiona)
Water-based stains Fresh sta ins: absorbent cloth
such as coffee, tea, Dr ied stains: sta in remover suitable for leather
blood, etc.
Oil-based stains Fresh sta ins: absorbent cloth and stain remover suitable
such as oil, make- for leather
up, etc . dried sta ins: Oil cleaning spray
Special stains such Stain remover suitable for leather
as ballpo int pen,
na il polish, latex
pa int, shoe polish,
etc .
Care Regularly
apply conditioning cream that protects from
light and penetrates into the material. Use specially-col-
ored conditioning cream, if necessary.
Carbon parts Dirty Clean the same way as plastic parts
al Mild soap solution: maximum two tablespoons neut ral soap in 1 quart (I liter) of water
& WARNING
The windshie ld may not be treated with
water-repelling windshie ld coating agents .
Unfavorab le conditions such as wetness,
darkness, or low sun can result in in­
creased glare. W iper blade chatter is also
possible.
- Headlights/tail lights
- Never clean headlights or tail lights
w ith a dry cloth or sponge. -
Do not use any cleaning product that
contains alcohol, because they could
cause cracks to form .
-Wheels
-Never use any paint polish or other
abrasive mater ials.
- Damage to the protective layer on the
rims such as stone chips or scratches
must be repaired immediately.
- Sensors/camera lenses
- Never use warm or hot water to re-
move snow or ice from the camera
len s. This could cause the lens to crack .
IJII>
•
•

Using the proper engine oil is important for
the functionality and service life of the en­
g ine. Your engine was factory -filled with a
h igh-quality oil which can usually be used
t h roughout the entire year.
Your Limited New Vehicle Warranty does not cover damage or ma lf u nctions due to
fa ilure to follow recommended mainte­
nance and use requirements as set forth in
the Audi Owner's Manual and Warranty
&
Ma intenance booklet .
- Use only a high quality eng ine oil that ex­
pressly complies w ith the Audi o il quality
sta ndard specified for your veh icle's e n­
gine . U sing any other oil can cause seri­
ous eng ine dam age.
- Do not m ix any l ubrica nts o r othe r addi­
tives into the eng ine oi l. Doing so can
ca use eng ine damage.
I f you need to add oil and there is no ne
availab le tha t mee ts the Audi o il qua lity
s t andard your engine requires, yo u may
add a tota l of no more than 0 .5 quart/ liter
of a high -quality "synthetic"oil t hat meets
the following specifications.
- Vehicles with gaso line engine: ACEA A3
or API S M with a viscosity grade of
SAE 0W-30, SAE SW-30 or SA E SW-40.
- For more information abo ut eng ine oil
that has been app roved for your vehicle,
please contact either your a uthori zed
Audi dealer or Audi Customer Relations
at 1 (800) 822 -2834 or visit our web site
at www.a udiusa .com or
www .aud icanada .ca .
Engine oil consumption
The engine in your vehicle depends on an ade ­
quate amount of oil to lubricate and cool all
of its moving parts.
In order to provide effective lubrication and
cooling of inte rnal engine components, all in-
~ ternal combustion eng ines consume a certai n ,....,
Checking and fillin g 215
amoun t of oil. Oil consumpt ion varies from
engine to engine and may change significantly
over the life of the engine . Typically, engines
with a spec ified break-in period (see
¢
page 193) consume more oil during the
break -in period than they consume after o il
consumption has stabilized .
U nder normal cond itions, the rate of oil con ­
sumption depends on the quality and viscos ity
of the oil, the RPM (revolutions per minute) at
which the engine is operated, the ambient
temperature and road conditions. Further fac­
tors are the amount of oil dilut ion from water
condensa tion or fue l resid ue an d the oxida­
t ion level of the o il. As any engine is subject to
wear as mi leage b uilds up, the oil consump ­
tion may increase over time until replacement
of worn components may become necessary.
With a ll these variab les coming into p lay, no
standard rate of oil consumption can be es ­
tablished or specified. There is no alternative
to regular and frequent check ing of the o il lev ­
el, see
Note .
If the yellow engine oil leve l warning symbo l
El in the instrument cl uster lights up, you
sho uld check the oil leve l as soon as possib le
¢
page 216. Top off the oil at your earliest
convenience
¢ page 216.
A WARNING
Before you c heck anythi ng in the engine
compartmen t, always read a nd heed all
WAR NINGS ¢&.
in Working in the engine
c ompar tment on page 212.
(D Note
D riving w it h an insufficient o il level is like ­
l y to cause sever e damage to the e ngine .
(D Tips
- The oil pressure warning display. is
not an indicator of the oil level. Do not
rely on it. Instead, check the oil level in
your engine at regular intervals , pref­
erably ea ch time you r efuel, and alway s
before going on a long trip . .,.
•
•

222 Check ing and filling
@ For the sake of the environment
Becau se of the pr oblem of proper disposa l
of brake flu id as we ll as the special tools
requ ired and the necessary expert ise, we
recommend that you have the brake fluid
changed by your author ized Audi dealer.
Battery
General information
Unde r normal operating conditions, the bat ­
tery in your Audi does not need any mainte ­
nance. With
high outside temperatures or
long daily dr ives we recommend that you have
the electro lyte level checked by an authorized
Aud i dea ler o r qualified workshop . The elec­
trolyte leve l sho uld a lso be checked each t ime
the battery is charged ¢
page 224.
Have the battery checked when you take your
ve hicle in for service . Yo u are well adv ised to
replace a bat tery that is older tha n 5 yea rs .
W ith certa in types of a irbag deployment, t he
battery is d isconnected from the vehicle elec­
tr ica l system fo r safety reasons ¢
& in Re­
pair, core and disposal of the airbags on
page 157.
Disconnecting the battery terminals
Some veh icle functions (power w indow regu­
lato rs, for example) are lost if the battery ter­
m inals a re discon nected. These functions have
to be re lea rned after the batte ry terminals a re
connec ted agai n. T o prevent this, the battery
should o nly be d isconnec ted from the vehicle
e lec trica l syste m when absolu tely necess ary
for repairs.
Vehicles not driven for long periods
I f yo u do not drive you r vehicle over a pe riod
of severa l days or weeks, elec trical co m po­
nen ts are gr adually cu t back o r swi tched off .
T his reduces energy consumption and main­
tains sta rting capab ility over a lon ger period
¢ page 191.
Some o f the conven ien ce f unct ions m ay no t
ope rate, su ch as the in ter ior lights o r the power seat adjus
tment. The convenience
funct ions wi ll be available again when yo u
tu rn on the ignition and sta rt t he engine.
Winter operation
Du ring the w inte r mon ths , b att ery capac ity
tends to dec rease as temperatures drop . This
is beca use more power is a lso consumed w hile
starting, and the headlights, rear win dow de­
f ogger, etc., are used more often.
Avoid unnecessa ry powe r consumpt ion, pa r­
ticu lar ly in ci ty traffic o r when traveling only
sho rt distances . Let yo ur autho rized A udi
dealer check the capacity of the vehicle bat ­
tery before w inter sets in ¢
page 224. A well
charged battery will not on ly prevent starting
problems when the weather is cold, but will
also last longer .
@ Tips
If your vehicle is left standing for seve ral
weeks at extremely low temperatures, the
vehicle battery s hou ld be removed and
s tored w her e it w ill not freeze. This will
preve nt i t fr om be ing d amaged and having
t o be repla ced .
Working on the battery
Be especially careful when working on or near
the battery.
The battery is located in the luggage compar t­
ment under the floor . Befo re you che ck any­
t hi ng in the luggage co mpartment,
read and
heed all WARNINGS
¢ .&, .
Always heed the safety warnings , when work­
i ng on the veh icle ba tte ry or the vehicle e le c­
t ric al sys tem to p reven t inju ry.
The following WARNINGS are very
important when working on the battery:
Always heed the following WARNING SYM ·
BOLS and safety precautions when working
on the battery .
®
Always wear eye protection .

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&
Battery acid contain s sulfuric acid. Al ·
wa ys wear glove s and e ye protection .
@
No
· sparks
- flame s
- smoking .
~
When a battery i s ch arged, it p roduce s
. hy drogen g as whi ch i s exp losive and
could cau se per sonal inju ry.
®
Always keep the batt ery well out of
re ach of children .
A WARNING
Whenever working on the battery or on
the electrical system, there is the r isk of
injury, acc ident and even fire. Read and
heed the following WARNINGS :
- Always wear eye protection. Do not let
battery acid or any lead particles get on
your sk in or cloth ing. Sh ield your eyes .
Explosive gases can cause blindness o r
other injury.
- Battery acid contains sulfuric acid . Sulfu­
ric acid can cause blind ness and severe
burns.
- Always wear gloves and eye p rotection.
Do not tilt the battery because ac id
could leak out of the vent ilation open ­
ings.
- If you get battery acid in yo ur eyes or
on your sk in, immed iately r inse with
cold water for severa l m inutes and get
medical attention.
- If you should ingest any battery acid,
seek med ica l attention immediately.
- Do not expose the battery to an open
flame, electric sparks or an open light.
- Do not smoke.
- Do not interchange the positive and neg-
ative cab les .
- When working on the battery, be sure
not to short-circuit the terminals with
tools or other metal objects. This would cause the battery to heat up very quickly,
wh ich could lead to damage or explosion
and personal injury.
-
Checkin g and fillin g
-When a battery is charged, it produces
hyd rogen gas which is explos ive and
could cause personal injury.
- Always keep the battery well out of the
reach of children.
- Before work is done on the elect rical sys ­
tem, disconnect the negative ground ca­ ble.
- Before performing any work on the e lec­
trical system, switch
off the eng ine and
ignit ion as well as any electrical equip­
ment. The negative cable on the battery
must be disconnected. If yo u are just go­
ing to replace a light bulb, then it is
enough to switc h
off the lights.
- Before disconnecting the battery, switch
off the anti-theft alarm system! Other­
wise you wi ll set
off the al arm.
- When disconnecting the battery, first
discon nect the negat ive cab le and then
the posit ive cab le.
- Before reconnecting the batte ry, ma ke
sure all e lectr ica l cons umers are sw itch ­
ed off . Re connect the pos it ive cable first
and then the negative cable. Neve r in ter ­
change the cables -this could start a fire!
- Never cha rge a frozen or a thawed-out
battery.
It could exp lode! If a battery has
frozen, then it must be replaced . A dis­
charged battery can freeze over at 32°F
(QOC).
- Make s ure the vent hose is always attach­
ed to the opening on the side of the bat­
tery.
- Never use batteries which are damaged.
There is the danger of an explosion! A l­
ways rep lace a damaged batte ry.
A WARNING
Ca lifornia Proposition 65 Warning:
- Battery posts, terminals and related ac­
cessories conta in lead and lead com­
pounds, chemicals known to the State of
Ca lifornia to cause cance r and reproduc­
tive problems. Wash hands after han- dling.
~
223
•
•

272 Fuses and bulb s
No. Consumer
5 Electromechanical parking
brake
6 Electronic damping control
7
Electromechanical parking
brake
8 Rear exterior lighting
9 quattro sport
10 Rear exterior lighting
11 Central locking
12 Terminal
30
Fuse panel © (brown)
No. Consumer
1 Luggage compartment lid
contro l module (allroad)
2 12-volt
socket, cigarette
lighter
3 DCDC converter path 1
4 DCDC converter path 2,
so und amp lifier, radio
6
Right upper cab in heat ing
(Cabr iolet)
7
Electromechanical parking
brake
Right front door (w indow
9 regu lator, central locking,
mirror, switch, lighting)
1 0 Left upper cabin
heating
(Cabr iolet)
T wo -door models : rear right
window regu lator; Four-
11 door models: rear r
ight door
(window regulator, central
locking, sw itch, lighting)
12 Cell phone prep
Fuse panel © (black)
No. Consumer
1 Right front seat heating
4
MMI
5 Radio
6 Rear view camera
Amps
5
15
30
30
35
30
20 5
Amps
30
20
40
30
30
30
30
30
30
5
Amps
15
7,5
5
5
No . Consumer Amps
7 Rear window heater (all-
30
road)
8 Rear Seat Entertainment s
Bulbs
Replacing bulbs
For your safety, we recommend that you hove
your authorized Audi dealer replace any bulbs
for you.
It is becoming increasingly more and more
difficult to replace vehicle light bulbs since in
many cases, other parts of the car must first
be removed before you are able to get to the
bulb. This applies especially to the light bulbs
in the front of your car which you can only
reach through the engine compartment .
Sheet metal and bulb holders can have sharp
edges that can cause serious cuts, parts must
be correctly taken apart and then properly put
back together to help prevent breakage of
parts and long term damage from water that
can enter housings that have not been p roper­
l y resea led.
For your safety, we recommend that you have
you r authorized Aud i dea ler replace any bulbs
for you, since yo ur dealer has the proper too ls,
the correct bulbs and the expertise .
Gas discharge lamp s (Xenon lights)*:
Due to the high electr ical voltage, have the
bulbs replaced by a qualif ied techn ic ian.
Headlights wit h Xenon light are identified by
the high voltage sticker.
_&. WARNING
Changing Xenon lamps witho ut the neces­
sa ry equipment can cause serious persona l
injury.
- Bulbs are pressurized and can explode
when being changed. Potential risk of in­
jury!
-

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"' rl
"' rl
@ Tips
The discharged battery must be properly
connected to the vehicle's electrical sys­
tem. When jump starting or charg ing the
battery, never connect the negative
ground cable to the battery negat ive post
because the ba ttery manager system must
be ab le to detect the battery's state of
charge. Always connect the negative
g round cab le to the negative ground pos t
of t he battery manager cont ro l unit.
Use of jumper cables
Make sure to connect the jumper coble
clomps in exactly the order described b elow!
Fi g. 21 1 Eng ine co mpar tment: Co nnecto rs fo r jum per
c ab les a nd c har ge r
F ig. 212 Jump start in g w ith t he ba ttery of a not her ve ·
hi cle :@ booster battery, @ disc harged veh icle battery
The procedure described below for connecting
jumper cables is intended to provide a jump
start for your veh icle .
Vehicle with di scharged battery :
~Turnoff lights and accessories , move lever
of automatic transmission to N (Neutral) or P (Park) and set parking brake .
Emergency situ ation s 2 7 5
Connect POSITIVE(+) to POSITIVE(+ )
(red )
~ Remove the cover above the jump start con­
nection .
~ Open the cover on the positive pole
¢fig . 211 .
1. Connect one end of the red positive cable
on the
jump sta rt bolt c::;, fig. 212 (D
(Bolts under cove r= "posit ive ") of the ve­
hicle to be started @.
2 . Conne ct the othe r end to the pos itive ter -
mina l@ of the booster battery @.
Connect NEGATIVE (-) to NEGATIVE (-)
(black )
3. Co nnect one end o f the b lack neg ative c a­
ble to the nega tive te rmi na l@ of the
booster battery @.
4 . Connect the other end to the
jump start
bolt @
(Bolts with hex head = "negative")
of the vehicle to be started @.
Starting the engine
~ Start the engine of the ve hicle with the
booste r battery @. Run the engine at a
moderate speed.
~ Start engine with d ischarged vehicle battery
® in the usual manner .
~ If the engine fails to start: do not keep t he
starter cran king for lo nger than 10 seconds .
Wait for about 30 seco nds and the n try
aga in.
~ W ith engi ne runni ng, remove jumpe r cab les
from both vehicles in the exa ct
reverse o r­
der .
~ Close the cover on the positive pole .
T he b attery is vented to the o utside to p reven t
gases from en tering the veh icle in ter ior . Ma ke
s ur e that the j umper clamps a re well connect­
e d with their
metal ports in full contact with
the batte ry term inals.
A WARNING
To avoid serious personal injury and dam­
age to the vehicle, heed all warnings and
in structions of the jumper cable ma nufac-
turer . If i n dou bt, call for road servic e.
Ill>

288 Index .:..:..:..::....::.....:..._ ___________________________ _
A
A/C (automatic clima te control) .. .... . . 79
Acc esso ries . . . . . . . . . . . . . . . . . . . . 66, 285
adapt ive cruise control
Vehicles wit h manual transmission 103
A dap tive cr uise con trol .... .. .. .. .. .. . 10 1
C leaning the sensor .. ... .. .. .. .... . 203
M essages . . . . . . . . . . . . . . . . . . . . . . . . 109
Request for dr iver intervention . ..... . 10 7
Sett ing t he driving program .. .. .. ... 106
A dapt ive dampers .......... .... .... . 115
Adapt ive light ................ ... ... . 49
Ada ptive Lig ht (defective) ... .. .. .... .. 22
Adding Eng ine coolan t . . . . . . . . . . . . . . . . . . . . 219
E ng ine oil . .... .. ..... ... .. .. .... . 216
Windshie ld washe r fl uid ... .. .. .... . 225
Addit ional accesso ries
Addit ives 2
85
Eng ine oil .. ............. .. .. .. .. . 216
Ad justa ble s teer ing column . ... .. .... .. 82
Ad justing
A ir dist ribution (automatic climate con -
trol) . .. .. .. ............. .. .. .... .. 80
I ns trumen t illum ina tion . .. .. .. .. .. . . S 2
Steer ing column .. ..... ... .. .. .... .. 82
Tempe rature (automat ic climate control) 80
A irbag
War ning/ indica to r ligh ts ... .... .... .. 20
A irbag system . . . . . . . . . . . . . . . . . 144, 160
Advanced Airbag System . ...... .. .. . 148
Advanced Airbag System compone nts . 15 1
Ca re . .. .. .. ........ ..... .. .. .... . 157
C hil dren . ............... .. .. .. .. . 166
C hil d restr aints ........... .. .. .. .. . 16 7
Componen ts (front airbags) . . . . . . . . . 1 51
D anger of fitting a child safety seat on
the front passenger seat . . . . . . . . . . . . 145
Disposal . .... ........... .. .. .... . 157
Front airbags . . . . . . . . . . . . . . . . 148, 149
H ow do the front airbags work? . .. .. . 153
H ow ma ny airbags does my vehicle
have? ..... .......... ...... ... .. . 15 1
H ow t he Advan ced Airbag System com-
p o nents wo rk toge ther .... .. .. .. .. . 15 2
I mpor tan t things to know .. .. .. .. .. . 14 4 Indicator lig
ht ... ... .. ..... .... . .. 154
Monito ring . ..... .. ... ..... ... .. .. 154
PASSENGER AIR BAG OFF light ... .. .. 155
Repairs ... .... .. ............. .... 157
Safety instr uctions ............. .... 156
S ide a irbags ..... ................ . 159
S ide cu rtain airbags .... .. ... ..... .. 162
Weight-sensing mat .............. . 166
When must t he sys tem be inspected? 154
Alcantara Cleaning ...... .. .......... ...... . 205
all-wheel drive
All wheel d rive 190
Winter tires . .. .. .. ........... .. .. 254
Alternato r
refer to Generator ................ .. 16
Anti-freeze
refer to E ng ine coolant system ... .... 218
An ti-lock b rak ing system ......... .. .. 185
W arning/ind icator lights . . . . . . . . . 18 , 19
An ti-s lip reg ulation ................ . 185
Warning/ind icator lights ........... .. 18
Anti-theft a larm warning system ... .... . 31
An ti-the ft systems
El ectronic immob ilizer . . . . . . . . . . . . . . . 3 7
Arm rest ...... .. .. .. ... ... ... .. .. .. . 62
Asht ray .. .. .. .. .. ............. .. .. . 65
As te ris k
Wha t does i t mean when somet hing is
marked w it h an asterisk? . . . . . . . . . . . . . . 6
Audi braking guard
refer to b ra ki ng guard .......... .. .. 101
Audi drive select . .. ............. .... 115
Adaptive dampers .. .... .... ... .. .. 115
Desc ription ...... ................ . 115
Dynam ic steer ing . ..... ........... . 115
Setting the dr iv ing mode ........ .... 116
S po rt differential . ............. .... 115
Audi Serv ice Repai r Manuals and Li tera-
ture 283
A UTO
Automat ic climate contro l ..... .. .. .. . 80
Automat ic head lights .......... .. .. . 49
A ut o Lock . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Automat ic be lt ret ractor ...... ...... . 139