2018 AUDI S4 Cluster

Safety belts
General information
Always wear safety belts!
Wearing safety belts correctly saves lives!
This chapter explains why safety belts are neces­
sary, how they work and how to adjust and wear
them correctly.
.. Read all the information that follows and heed
all of the instructions and WARNINGS.
A WARNING
Not wearing safety belts or wearing them im­
properly increases the risk of serious personal
injury and death.
- Safety belts are the single most effective
means available to reduce the risk of serious
injury and death in automobile accidents.
For your protection and that of your passen­
gers, always correctly wear safety belts
when the vehicle is moving.
- Pregnant women, injured, o r physically
im­
paired persons must also use safety belts.
Like all vehicle occupants, they are more
likely to be seriously injured if they do not
wear safety belts. The best way to protect a
fetus is to protect the mother
-throughout
the entire pregnancy.
Number of seats
Your Audi has a total of five seating positions:
two in the front and three in the rear. Each seat­
ing position has a safety belt.
A WARNING
Not wearing safety belts or wearing them im­
properly increases the risk of serious personal
injury and death.
- Never strap more than one person, includ­
ing small children, into any belt.
It is espe­
cially dangerous to place a safety belt over a
~ child sitting on your lap.
~ -Never let mo re people ride in the vehicle
:::l than there are safety belts available. 0 0
3 Safety belts
-Be sure everyone riding in the vehicle is
properly restrained with a separate safety
belt or child restraint.
Safety belt warning light
Your vehicle has a warning system for the driver
and front seat passenger to remind you about the importance of buckling-up.
Fi g. 227 Safety belt warn ing light in the instrument clus ·
te r
-enlarged
Before driving off, always:
.. Fasten your safety belt and make sure you are
wearing it properly.
"' 0 N ... m
.,. Make sure that your passengers also buckle up
and properly wear their safety belts.
.,. Protect children with a child restraint system
appropr iate for the size and age.
The warning light . in the instrument cluster
lights up when the ignit ion is switched on as a re­
minder to fasten the safety belts . In addition,
you w ill hear a warn ing tone for a certain period
of time.
Fasten your safety belt and make sure that your
passengers also properly put on their safety
belts.
A WARNING
-
- Safety belts are the sing le most effective
means available to reduce the risk of serious
injury and death in automobile accidents.
For your protection and that of your passen­
gers, a lways correctly wear safety belts
when the vehicle is moving .
- Failure to pay attention to the warning light
that comes on could lead to personal injury.
263

a co .... N ,....
N .... 0 0
3 co
Airbag System for the front passenger seat from
doing its job in a crash.
The f ront Ad vanced Airb ag S ystem con sists
of t he follo wing :
-Crash sensors in the front of the vehicle that
measure vehicle acceleration/deceleration to
provide information to the Advanced Airbag
System about the severity of the crash.
-An electronic control un it, with integrated
crash sensors for front and side impacts. The
control unit "decides" whether to fire the front
airbags based on the information received from
the crash sensors. The control unit also
"de­
c ides" whether the safety belt pretens ioners
shou ld be activated .
-An Advanced Airbag with gas generator and
contro l valve for the driver ins ide the steer ing
wheel hub.
-An Advanced Airbag with gas generator and contro l valve inside the instrument pane l for
the front passenger.
-A capac itive passenger detect io n system unde r­
neath the front passenger seat cover. This sys­
tem measures the elect rical capac ita nce of the
person in the seat. The i nformation registe red
is sent continuously to the electron ic control
unit to regulate deployment of the front Ad­
vanced Airbag on the passenger side.
-An airbag monitoring system and indicator
light
m in the instrument cluster .
-A sensor in each front seat reg isters the dis­
tance between the respective seat and the
steering wheel or instrument panel. The infor­
mation reg istered is sent continuously to the
electronic control unit to regulate deployment
of the front Advanced A irbags.
-The PA SS EN GER AIR BAG OFF ~; ON@ light
comes on in the
headliner¢ page 283,
fig. 241 and tells you the status of the Ad­
vanced Airbag on the passenge r side .
-A sensor in the safety belt latch for the dr iver
and for the front seat passenger that senses
whether that safety belt is latched or not and
transm its this info rmat ion to the elect ronic
contro l unit.
Airb ag sys tem
_& WARNING
Damage to the front passenger seat can pre­
vent the front airbag from working properly.
- Improper repair or disassembly of the front
passenger and driver seat will prevent the
Advanced Airbag System from funct ion ing
properly.
- Repairs to the front passenger seat must be
performed by qualified and properly trained
workshop personnel.
- Never remove the front passenger or driver seat from the vehicle.
- Never remove the upholstery from the front
passenger seat.
- Never disassemble or remove parts from the
seat or disconnect w ires from it.
- Never carry sharp objects in your pockets or
put them on the seat. The capacit ive pas­
senger detect ion mat in the front passenger
seat will not function p roperly if it is punc­
tured.
- Never carry things on your lap or carry ob­
jects on the front passenger seat. S uch ob­
jects can influence the capacitance reg is­
tered by the capacitive passenger detection
system, so that incorrect informa tion is pro­
vided to the airbag control unit.
- Never store i tems unde r the front passenger
seat . Parts of the Advanced Airbag System
under the passenger seat could be dam­
aged, p reventing them and the airbag sys­
tem from working proper ly.
- Never p lace seat covers or replacement up­
holstery that have not been specifically ap­
proved by Audi on the front seats.
- Seat covers can prevent the Advanced A ir­
bag System from recognizing chi ld re­
stra ints or occupants on the front passenger
seat and prevent the side airbag in the seat
backrest from deploying properly.
- If a seat heater has been retrofitted or oth­
erwise added to the front passenger seat,
never install any child restra int system on
this seat.
- Never use cushions, p illows, blankets, or
similar items on the front passenge r seat .
279

Airbag syste m
The additio na l l ayers prevent the capacitive
passenger detection system from accurately
measuring the capac itance of the ch ild safe­
ty seat and/or the person on the seat and
thus keep the Advanced Airbag System from
working p roperly.
- Never place or use any electrical device (such as a laptop, CD player, elect ronic
games dev ice, power inverte r or seat heater
for child seats) on the front passenger seat
if the device is connected to the 12-vol t
socket or the cigarette lighter socket . S uch
devices can infl uence the capacitance regis­
tered by the capacitive passenger detection
system, so that incorrect information is pro­
vided to the airbag control unit.
- If you must use a c hild restraint on the front
passenger seat and the child restraint man­
ufacturer's instructions require the use of a
towel, foam cushion or something else to prope rly position the ch ild restraint, make
certain that the
PASSENGER AIR BAG OFF
~; light comes on and stays on whenever
the chi ld restraint is installed on the front
passenge r seat .
-If the PASSENGER AIR BAG OFF ~; light
does not come on and s tay on , immediate ly
ins tall child restra int in a rea r seating posi­
tion and have the airbag system inspected
by you r A udi dealer.
_& WARNING
If the front passenger seat gets wet, dry it im­
mediately.
- If liquid soaks into the front passenger seat,
this can keep the a irbag system from work ­
ing prope rly and may, for instance, deact i­
vate the passenger frontal airbag. If this happens, the
PASSENGER AIR BAG OFF ~;
light will come on and stay on togethe r with
the a irbag ind icator
light E,I in the inst ru­
men t cluster.
- If liquid is poo led on the seat, bu t has not
soa ked i n, this may also keep the airbag sys­
tem from wo rking properly and ca use the
passenge r frontal a irbag to be enabled
(tu rned on), even though there is a properly
280
installed child rest raint system on the seat .
Wet towels or other wet things on the seat
cushion can have the same effect.
If the
front passenger fronta l airbag is turned on,
t he
PASSENGER AIR BAG OFF ~; light light
w ill go out.
How the Advanced Airbag System
components work together
The front Advanced A irbag System and the side
airbags supp lement the p rotection offered by the
front three-point safety be lts and the adjustable
head restraints to he lp reduce the risk of injury in
a wide range of accident and crash situat ions. Be
sure to read the important i nformat ion about
safety and heed the WARNINGS in this chapter .
Deployment of the Advanced A irbag System and
the activation of the safety belt pretensioners de­ pend on the dece leration measured by the crash
sensors and registered by the elec tronic contro l
u nit . Crash severity depends on speed and decel­
e ration as well as the mass and stiffness of the
vehicle or object invo lved in the cras h.
On the passenger side, regard less of safety be lt
u se, the front passenge r frontal airbag will be
turned off if t he e lectr ica l capaci tance m easured
by the capaci tive p assenge r detection system o n
t h e fron t passenger sea t is less th an the amou nt
programmed in t he e lec tronic cont ro l unit. The
front passenger frontal airbag wi ll also be turned
off if the capacitance measured by the system for
the front passenger seat equals that of an infant
of about one year of age in one of the child seats
that was used to certify the Advanced Airbag Sys­
tem under Federal Motor Vehicle Safety Standard 208. The
PASSENGER AIR BAG OFF ~; light
comes on and stays on to tell you whe n the front
Advanced Airbag System on the passenge r side
has been tu rned
off~ page 283.
_& WARNING
T o reduce the ris k of injury when an airbag in ­
f lates, always wea r safety belts prope rly.
- If you are un res trained, leaning forward, sit­
ting sideways or out of position in any way,
your r isk of injury is much higher.

an authorized Audi dealer or authorized Audi
Service Facility for assistance.
Fuel filler door emergency release
If the central locking system is faulty, the fuel
filler door can be unlocked manually.
Fig. 262 Luggage co mpartment: opening the side trim
panel
Fig . 263 Luggage compartment: fuel filler door e merge ncy
r elease
The emergency opening mechanism is located
behind the right side trim panel in the luggage
compartment.
... Open the cover in the side panel ¢fig. 262.
... Loosen the loop c;, fig. 263 from the retainer
and then pull on the loop carefully
¢(D . The
filler door is released .
... Press on the left side of the fuel filler door to
open it
¢ page 317, fig. 260.
(D Note
Only pull on the loop until you feel resistance.
You will not hear it release . Otherwise you
could damage the emergency release mecha­
nism.
Checking and Filling
Selective catalytic
reduction (AdBlue/DEF)
General information
Applies to: vehicles with selec tive catalytic reduction
In vehicles with selective catalytic reduction, a
urea solution (AdBlue/DEF) is injected into the
exhaust system in front of a nitrogen oxide cata­
lytic converter to reduce nitrogen emissions. The
urea solution is known as Ad Blue or DEF (Diesel
Exhaust Fluid). The information that follows w ill
use the name AdBlue.
The Ad Blue is carried in a separate tank in the ve­
hicle. The AdBlue usage accounts for approxi­
mately 1.0% to 4 .0% of the diesel fuel that is
used .
When a message about refilling the AdBlue ap­
pears in the instrument cluster display, you must
refill the AdBlue yourself or have it refilled by an
authorized Audi dealer or authorized Audi Service
Facility
c;, page 320 .
{D Tips
-The display indicates the distance remaining
that can be dr iven
c;, page 319. If the Ad Bl­
ue tank is completely empty, the engine will
not start again after the ignition is switched
off.
-Ad Blue is required by law to operate this ve­
hicle.
Messages in the instrument cluster display
Appl ies to: vehicles wi th selective catalytic reduction
The display indicates if the Ad Blue level is low or
if there is a system malfunction.
AdBlue level low
You will be informed in the instrument cluster
display if the AdBlue in the tank drops below a
certain level. Add at a minimum the amount of
AdBlue shown in the message:
II Refill with at least x qt (l) Ad Blue. Range
x mi (km )
319

Checking and Filling
This message appears when there is only enough
Ad Blue left to drive the distance indicated in the
instrument cluster . Fill the Ad Blue .
• Refill with at least x qt (l) Ad Blue. No en­
gine start in x mi (km). See owner's manual
This message appears when there is only enough
Ad Blue left to drive the distance indicated in the
instr ument cluster. Fill the Ad Blue. Otherwise
the engine will not start again if you stop it once
the d istance indicated has been driven .
• Refill with at least x qt (l) AdBlue. Engine
start not possible . See owner's manual
This message appears when the AdBlue tank is
empty. Fill the AdB lue. Otherwise you will not be
able to start the engine again once you stop it .
The AdBlue must be refilled when the amount in
the tank has reached the minim um level
c::> page 320, Preparation.
Incorrect filling/system malfunction
A message appears if the Ad Blue tank was filled
with a fluid other than AdBlue and the system has detected that the tank was fi lled incorrectly ,
or if there is a system malfunction .
II Ad Blue: malfunction! No engine start in
x mi (km). See owner's manual
This message appears when it is only possible to
drive the d istance ind icated in the instrument
cluster. Drive to the nearest authorized Audi
dealer or authorized Aud i Serv ice Facility to have
the malfun ction corrected. Otherwise the engine
will not start again if you stop it once the dis­
tance indicated has been driven .
• Ad Blue: malfunction! No engine start possi­
ble. See owner's manual
This message appears if the system has detected
that the tank was filled incorrectly or that there
is a malfunction . Drive immediately to the near ­
est authorized Aud i dealer or authorized Audi
Service Facility to have the malfunction cor rect­
ed. Otherwise you will not be able to start the en­
g in e again once you stop it .
320
Preparation
App lies to : vehicles with selective cata lyt ic reduct ion
Fig. 264 R ig ht re ar sid e o f th e ve hicle: removing th e Ad B l­
ue cap
The Ad Blue tank open ing is located near the die­
sel tank opening. Add at least the amount of
Ad Blue shown in the instrument cluster display.
This is the minimum amount required to ensure
the system detects the refilling and to start the
engine. You can add a maximum of 6 .3 gallons
(24
L) .
Requ irement: the request to add Ad Blue must
appear in the instrument cluster display .
.. Switch the ignition off.
.. Open the tank fille r doo r c::> page 317 .
.. Turn the tank filler neck cap to the left to re­
move
c::> fig. 264 .
.. Refill Ad Blue using a pump no zzle c::> page 321,
a canister c::> page 321 or a bottle c::>page 321.
A WARNING
AdBlue can irritate the skin, eyes and respira­
tory system .
If there is contact with the fluid,
flush immed iately w ith plenty of water . Con­
sult a physician if necessary .
(D Note
-Only use Ad Blue that conforms to the
standard ISO 22241-1. Do not mix any addi­
ti ves wi th the Ad Blue and do not dilute it
with water .
- Do not add AdBlue to the diesel tank or add
diesel fuel to the Ad Blue tank. Do not start
the engine under any circumstances if the
wrong fuel is filled in the tank. There is a

-If the hood is not latched completely, it
could fly up while you are driving and ob­
struct your vision.
Engine compartment overview
The most important check points.
Checking and Filling
Fig. 268 Typical location of the reservoir a nd t he engine o il filler ope ning
(!) Washer fluid reservoir (O) c::> page 332
@ Jump start po int( +) under a cover,(-) w ith
hex head screw
¢page 332 c:>page 374
@ Engine oil filling opening ( © Engine oil label* w ith VW standard
c:> page325
® Coolant expansion tank (- L) c::> page 329
® Brake fluid reservoir ((0) c::> page 330
The location of the engine oil filling opening and
the coolant expansion tank ¢
fig. 268 (items@
and@) may differ depending on the engine ver­
sion .
_& WARNING
-Read and follow all WARNINGS before check-
in g anything in the engine compartment
c:> page 323.
Engine oil
Engine oil specifications
The engine oil used must conform to exact speci­
fications.
The service interval display in the instrument
cluster of your vehicle will inform you when it is
time for an oi l change . We recommend that you
have your oil changed by an authorized Audi Serv-
ice Advisor.
.,..
325

Check ing and F illing
I f you must add oi l between oi l changes, use an
oil that matches the Audi oi l quality standard
listed on the st icker. The sticker is located at the
front of the engine
compartment <=> page 325,
fig. 268.
Au di r ec omm end s
ocastrol i/g/g'fE:@t P'r(w.:::-..~J.D,'JAJ..
A udi r ecommends Longli fe high performa nce
e ngin e oil from Audi G enuin e Part s
Using the proper engine oil is important for the
functionality and service life of the eng ine. Your
engine was factory-filled with a h igh-quality oil
which can usually be used throughout the entire
yea r.
0 Note
Your Limited New Vehicle Warranty does not
cover damage o r malfunctions due to failure
to follow recommended maintenance and use
requirements as set fo rth in the Aud i Owner's
Man ual and Warranty
& Maintenance booklet.
- Use only a high qual ity eng ine oi l th at ex-
p ressly complies with the Audi oil q uality
standard specified for your vehicle's engine .
Using any other oil can cause se rious engine
damage .
- Do not mix any lubricants or other additives into the engine oil. Doing so can cause en­
gine damage.
(D Tips
If you need to add oil and there is none availa ­
ble that meets the Audi oi l quality standard
your engine requi res, you may add a total of
no more than 0.5 qt (0.5 l) of a h igh-quality
"synthet ic" o il that meets the following speci­
fications.
- Vehicles with gasoline eng ine: ACEA A3 or
API SM with a viscosity grade of SAE OW-30,
SAE 5W-30 or SAE 5W-40.
- Vehicles w ith diesel eng ine: ACEA C3 or
API CF with a v iscosity grade of SAE OW-30
or SAE 5W-30 .
- For more information about engine oi l that
has been approved for your vehicle, please
contact eithe r your authorized Aud i dealer
or Audi Custome r Relat ions at
326
1 (800) 822-2834 or visit our web site at
www.audi usa .com or www .audicanada .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 ports.
In order to prov ide effect ive lub ricat ion and cool ­
ing of internal engine components, all internal
combustion engines consume a certain amount
of oil. Oil consumption var ies from engine to en­
gine and may change significantly over the life of
the engine. Typically, engines w ith a specified
break-in period
(see<=> page 80) consume more
o il dur ing the break-in per iod than they consume
after o il consumption has stabi lized .
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 m inute) at
wh ich the engine is operated, the amb ient tem­
perature and road condit ions. Furthe r facto rs a re
t h e amo unt of o il di lution from wate r condensa­
t ion or fue l residue a nd the oxidat ion level of the
oi l. As any engine is subject to wear as mileage
builds up, the oi l consumption may increase ove r
ti me until replacement of worn components may
become necessary.
With a ll these variab les coming into p lay, no
standard rate of oil cons umption can be estab ­
li shed or specified . There is no alternative to reg­
ular and frequent checking of the oil level, see
Note .
If the yellow engine oil leve l warning symbo l El
in the instrument cluster lights up, you should
check the o il level as soon as possible
<=> page 32 7. Top off the o il at your earliest con­
venience
<=> page 32 7.
A WARNING
Before you check anyth ing in the e ngine com­
partment, always read and heed all WARN­
I NGS<=> .&. in Working in the engine compart-
ment on page 323.
1iJ>,

Check ing and F illing
@ For the sake of the environment
- Oil should never enter the sewer system or
come into contact with the gro und.
- Pay attention to legal requirements when
disposing of empty oil containers .
@ Tips
- The oil leve l indicator in the d isplay is only
an informationa l disp lay .
If the oil leve l is
too low, a minimum oil warning appea rs in
the instrument cluster. Add oil and close
the hood . The current oil level is displayed
i n the instrument cluster the next t ime the
i gnition is switched on .
- The engine oil consumption may be up to
0 .5 quart/600 miles (0 .5 liter/1,000 km),
depend ing on driving style a nd operating
cond itions . Consumption may be higher
d ur in g the first 3,000 miles (5,000 km). Be­
cause of t his, the engi ne oil level m ust be
chec ked regular ly.
It would be best to check
each time you ref uel your veh icle and before
l ong drives.
Changing the engine oil
We recommend that hove your oil changed by an
authorized Audi dealer or a qualified service sta ­
tion .
Before you c heck a nyth ing in the eng ine compart­
men t,
alway s read and heed all WARNINGS ¢.&
in Working in the engine compartment on
page 323.
T he engine oil must be change d accord ing to the
intervals specified in your Warranty
& Mainte ­
nance booklet . This is very important because the
lubricat ing propert ies of oi l diminish gradually
during normal vehicle use.
Under some circ umstances the engine o il should
be changed more frequently. Change oil more of­
ten if yo u drive most ly short distances, operate
the vehicle in dusty areas or under predominantly
stop-and-go traffic cond it ions, or have yo ur vehi­
cle where temperatures remain below freezing
for extended periods .
328
Detergent add itives in the oi l will make fres h oil
l ook dark after the engine has been r unning for a
sho rt time . This is normal and is not a reason to
change the oil more often than recommended.
Because o f the p roblem o f prope r disposa l, along
with t he specia l too ls and necessary expertise re­
quired, we strongly recommend that yo u have
yo ur oil changed by an authori zed
Audi dealer or
a qua lified service station.
If you choose to change your oil yourself , please
note the fo llow ing important information:
_& WARNING
To reduce the risk of persona l injury if you
must change the eng ine oil in your vehicle
yourself:
- Wea r eye protect ion.
- To red uce the r is k of bur ns from hot engine
oil, let the engine cool down to the touch.
-
- W hen removin g the oil drain plug with your
fingers, stay as far away as possible. Always
keep your forearm pa rallel to the gro und to
he lp prevent hot oil from run ning down your
arm .
- Drain the oil into a container designed for
this purpose, one la rge enough to hold at
least the tota l amount of oi l in you r engine.
- Engi ne oil is poisonous. Keep it well out of
the reach of childre n.
- Continuous contact with used eng ine o il is
ha rmf ul to your skin . Always protect your
skin by washi ng oil off thoroughly with soap
a nd wate r.
(D Note
N eve r mix oil additives with you r engine oil.
These add itives can damage your engine and
advers ely affect you r Audi Limit ed New Veh i­
cle Warranty .
@ For the sake of the environment
-Before cha ng ing you r oi l, first make s ure
you know where you can properly dispose o f
t h e used oil.
- Always dispose of used e ngine o il pro perly .
Do not dump i t on garden soil, wooded