2011 AUDI S3 ECU

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& WA RNING (conti nued)
• Always bu ckle the child safety seat firmly in place even if a
child i s not sitting in it . A loo se child safety seat can fly around
during a sudden stop or in a crash.
• Always make sure the seat backre st to which the child restraint
is installed is in an up right position and securely latched into place
and cannot fold forward . Otherwise, the seatback with the child
safety seat attached to it could fly forward in the event of an acci ·
dent or other emergency situation.
• Alway s read and heed all WARNINGS wheneve r using a child
restrained in a vehicle is being used=>
page 167. Special precau­
tions apply when installing a ch ild safety seat on the front
passenger seat =>
page 147, "Child restraints on the front seat -
some important things to know ".•
Deactivating the convertible Locking
retractor
The convertible l ocking retrac tor for child restraints will
be d eactivated automatically when the belt is wound all
the way back into the retractor.
- P ress t he red butto n on t he safety be lt buckle . T he belt
to ngue will pop out o f the buckle.
- G uid e the s afety belt all the way back in to its stowed posi-
t ion .
Always le t the safety be lt retract comple tely i nto i ts s towed position.
T he safety bel t can now be used as an ord inary safety belt without the
convertib le locking ret ractor for ch ild rest raints.
If th e convertible locking r etractor should be activated inadve rtently,
the safety be lt must be un fastened and guided comp letely back into
i t s s towe d position to de activa te th is fe ature. If th e convert ible locking retractor is
not deact ivated, the safety belt w ill gradua lly
become tigh ter and uncomfo rtable to we ar.
& WARNING
Improperly in stalled child safety seats increase the risk of serious
personal injury and death in a collision.
• Never unfasten the safety belt to deactivate the convertible
lo cking retractor for child restraints while the vehicle is moving.
You would not be restrained and could be seriou sly injured in an
a ccident .
• Always read and heed all WARNINGS whenever u sing a child
restrained in a vehicle is being used =>
page 167. Special precau·
tions apply when in stalling a child safety seat on the front
passenger seat =>
page 147, "Child restraints on the front seat -
s ome important things to know ".•
LATCH Lower anchorages and
tethers for children
Child Restraint System anchors and how
are they related to child safety
T o prov ide a s imp le r a nd more practic able way to a ttach the child
restraint on the vehicle seat, Federal regulat ions require special
lowe r anch orages in ve hicl es and devi ces on new ch ild rest rain ts to
attac h to the veh icle anchorages.
Th e combination of the tether anchorages and the lower anchorages
is now gene rally called the
LATCH sys tem fo r "Lowe r Anch orages and
T ethers for Children ."
Forw ard -fa cing child res train ts manuf actured aft e r September 1,
1999, are required by U.S. federa l regu lat ions to comp ly with new
c hild head moveme nt performan ce requirements. These new per for -
~

mance requirements make a tether necessary on most new ch ild
seats.
Installing a child restra int that requires a top tether w ithout one can
seriously impair the performance of the chi ld restrai nt and its ability
to prote ct the child in a collision. Insta lling a child restraint tha t
requires a top tether without the top tether may be a violation of
state law.
Child restraint manufacturers offer LATCH lower anchorages on the ir
child seats with hook -on or push-on connectors attached to adjust­
able straps .
In addition to the LATCH lower anchorages, these child restraint
systems usually require the use of tet he r straps to he lp keep the child
restra int firm ly in place.
& WARNING
Improper installation of child restraints will increase the risk of
injury and death in a crash.
• Always follow the instructions provided by the manufacturer
of the child restraint you intend to install in your vehicle.
• Never install a child restraint without a properly attached top
tether strap if the child restraint manufacturer 's instructions
require the top tether strap to be used.
• Improper use of child restraint LATCH lower anchorage points
can lead to injury in a collision . The LATCH lower anchorage points
are designed to withstand only those loads imposed by correctly
fitted child restraints .
• Never mount two child restraint systems on one LATCH lower
anchorage point .
• Never secure or attach any luggage or other item to the LATCH
lower anchorages .
Safety first Vehicle OP-eration
Child Safety
(I) Tips
• In Canada, the terms "top tether" with "lower universal anchor­
ages" (or " lower universal anchorage bars") are used to describe the
system.
• In other countries, the term "ISO FIX" is used to descr ibe the lower
anchorages. •
Location
Fig. 148 Schematic
overview: LATCH
a nchorage point loca­
tions
Th e illustrat io n shows the seat ing locat ions in your vehicle whic h are
equipped with the lower anchorages system. •
Vehicle care Do-it-yourselt service iTechnical data

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Description
The lower anchorage positions are marked for quick
locating.
Fig. 149 Rear seat­
backs: locator buttons
fo r lower anchorages
Fig . 150 Rear seats:
lower anchorage
bracket locations
Attachment locator markers for lower anchorages
Circu lar locator buttons on the rear seatback indicate the lower
anchorage locations on the rear seating positions:::;, fig. 149.
Lower anchorages
The lower anchorage attachment points are located between the rear
seatback and rear seat cushion:::;, fig . 150.
Lower anchorages secure the child restraint in the seat without us ing
the vehicle's safety belts. Anchorages prov ide a secure and easy-to- use attachme
nt and minimize the possibility of improper child
restrain t installat ion.
All ch ild restraints manufactured after September 1, 2002, must
have lower anchorage attachments for the
LATCH system.
Remember that the lower anchorage points are only intended for
installat ion and attachment of ch ild restraints specifically certif ied
for use with
LATCH lower anchorages . Child restraints that are not
equ ipped with the lower anchorage attachments can st ill be installed
in compliance with the ch ild restraint manufact urer's instructions on
using vehicle safety belts .
& WARNING
Improper use of LATCH lower anchorages can cause serious
per sonal injury in an accident.
• Always carefully follow the child restraints manufacturer 's
instructions for proper installation of the child restraint and
proper use of the lower anchorages or safety belts in your vehicle.
• Never secure or attach any luggage or other items to the
LATCH
lower anchorages.
• Always read and heed the important information about child
restraints in this chapter and WARNINGS :::;,
page 167, "Child
Safety". •

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Installing a child restraint with LATCH
lower anchorages
Whenever you install a child restraint always follow the
child restraint manufacturer's instructions .
Mounting
Fig. 151 Lower
anchorages: proper
mounting
- Remove the cover* to access the lower anchorage attach ­
ment points.
- Make sure the seatback of the rear seat bench is in the
upright position and securely latched in place .
- Attach both hook-on connectors with the spring catch
release on the child safety seat onto the LATCH lower
anchorage so that the connectors lock into place
=> fig. 151.
-Pull on the connector attachments to make sure they are
properly attached to the LATCH lower anchorage.
- Pull straps tight following the child restraint manufac­
ture r's instructions.
Controls and equip­
ment Safety first Vehicle operation
Releasing
-
Loosen the tension on the straps following the child
restraint manufacturer's instructions.
- Depress the spring catches to release the anchorage hooks
from the lower anchorages .
Remember: Use tether straps to help keep the child restraint firmly
in place.
& WARNING
Improper use of the LATCH system can increase the risk of serious
personal injury and death in an accident.
• These anchors were developed only for child safety seats using
the "LATCH" system.
• Never attach other child safety seats, belts or other objects to
these anchors.
• Always make sure that you hear a click when latching the seat
in place. If you do not hear a click the seat is not secure and could
fly forward and hit the interior of the vehicle, or be ejected from
the vehicle.
& WARNING
Improper installation of child restraints will increase the risk of
injury in an accident.
• Always follow the child restraint system manufacturer's
instructions for proper installation of the child restraint system
and proper use of tether straps as well as the lower anchorages or
safety belts in your vehicle.
• Always read and heed the important information and WARN­
INGS about child safety and the installation of child restraint
systems =>
page 167, "Child Safety". •
Vehicle care Do-it-yourself service Technical data

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Tether anchors and tether straps
Fig . 152 Tether
an chors: a ttachment
ho ok locatio ns behind
t h e rea r seatba cks
The tether anchors for the rear seat ing pos itions are located on the
backside of the rear seat backs
=> fig. 152.
A tethe r is a st raight o r V-sha ped strap that a tta che s the to p pa rt of
a ch ild restraint to spec ial anchorage po ints in the vehicle .
T he pu rpose of the te the r is to reduce t he fo rw ar d m ovemen t of the
child restraint in a crash, in order to help reduce the risk of h ead injury
t ha t could be c ause d by st riking the ve hicle in terio r.
Forwar d fac ing chi ld re stra in ts manu fac tur ed after Sept em ber 1,
1 999, are requ ired by U.S . federa l reg ulations to comply with new
child head movem ent pe rformanc e req uirem ents. T h ese new p erf or­
mance requirements make a tether necessary on most new chi ld
saf ety seats.
& WARNING
Improper installation of child restraints will increase the risk of
injury and death in a crash.
• Always follow the instructions provided by the manufacturer
of the child restraint you intend to install in your Audi.
• Improper use of child restraint anchors (including tether
anchor s) can lead to injury in a collision. The anchors are designed
& WARNING (co ntinued )
to withstand only those loads imposed by correctly fitted child
restraint s.
• Never mount two child restraint systems on one LATCH lower
anchor po int .
• Never attach two child restraint systems to one tether strap or
tether anchorage.
• Never attach a tether strap to a tie-down hook in the luggage
compartment.
• Never use child restraint tether anchorages to secure safety
belts or other kinds of occupant restraints.
• Never secure or attach any luggage or other items to the LATCH
lower anchorages or to the tether anchors .
• If a tether or other strap is used to attach a child restraint to
the front passenger seat, make sure that it is not so tight, that it
causes the weight-sensing mat to measure more weight than is
actually on the seat .
• The heavier weight registered can make the Advanced Airbag
System work as though an adult were on the seat and deploy the
Advanced Airbag when it must be suppressed causing serious or
even fatal injury to the child.
• If you must install a rearward facing child safety seat on the
front passenger seat because of exceptional circumstances and
the PASSENGER AIR BAG OFF light does not come on and stay on,
i mmediately install the rear-facing child safety seat in a rear
seating position and have the airbag system inspected by your
Audi dealer. •

Trailer towing
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Trailer towing
Driving with a trailer
General information
Your Audi was designed primarily for passenger transpor ­
tation .
If you p lan to tow a t railer, p lease remember that the additional load
w ill affect durability, economy and performance.
Tr ailer towing not on ly p laces mo re s tress on the vehicle, it also calls
for more concentration from the driver.
For this reasons, a lways fo llow the operating and driv ing instr uctions
prov ided and use common sense .•
Technical requirements
Trailer hitch
Use a we ight-carrying hitch conforming to the gross trai ler weight .
Th e h itch mus t be suit able for your veh icle and t railer and mus t be
mounted securely on the vehicle's chassis at a
technically sound l oca­
t ion. Use on ly a tra ile r hi tch w ith removable b all moun t. Alw ays check
w ith the trailer hitch manufacturer to make sure that you are using
t he correc t hitch.
Do not use a bumper hitch .
The hitch must be installed in such a way t hat it does not interfere
w ith the impact -ab sorb ing bumper system. No mod ifi cations s houl d
be made to the vehicle exhaust and brake systems . From t ime to
t ime, che ck t hat all hitch mou nting bolts rema in securely faste ned.
W hen you are no t tow ing a trai ler, remove the trailer hitch ball
mount. This prevents the hitch from ca using damage should your
veh icle be s truck from behind=>&.
Tire pressure
When towing a tra iler, inflate the tires of you r vehicle to the cold tire
pressu re listed under "Full lo ad"on t he st ick er o n the r ight doo rjamb.
I n flate trailer t ires to trai ler and tire manufacturers' specifications .
Lights
The headlight settings should be checked with the tra iler attached
befo re d riving o ff. Have the headlights adjusted as necess ary s o that
you can see the road ahead but not b lind oncoming t raffic.
Check to make s ure bo th vehicle and t railer lights a re wor king prop­
er ly.
Engine cooling system
Towing a trailer ma kes t he engin e work harder. It is important t hat
t he cooling sys tem' s per formance stands up to the add ition al stra in.
M ake sure that the coo ling sys tem has eno ugh fluid .
Trailer brakes
If your trai ler is equipped with a braking system, check to be su re that
it confo rms to all regula tions .
Th e tra ile r hydrau lic brake system must not be directly con nected to
the vehicle's hydraulic b rake system.
Safety chains
Be sure trailer safety cha ins are p roper ly connected from the t rai ler
to the hitch on the vehicle. Leave enough s lac k in t he chai ns to permit
t u rni ng corners. When you insta ll safety chains, ma ke s ure t hey will
not d rag on t he road when yo u are d riving .
The chai ns should cross under the trailer tongue to prevent it from
drop ping in ca se of separat io n from t he hitch.
Trailer lights
Trailer lights must meet all regulat ions. Be su re to chec k w ith your
author ized A udi dealer for correct wiring, switches and relays. _.

Mirrors
If you are unable to see the traffic beh ind you using the regular
outs ide mirrors, then you
must i nstall extended mirrors. It is impor­
tant that you
always have clear vision to the rear.
& WARNING
After 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 lim ited to a typ ical class 1 or class 2 tra iler.
Trailer load distribution
Be sure the load in the trailer is held securely in place to guard aga inst
shifting, be it fo rwa rd, backward or sideways.
Never allow a passenger to ride in a trailer ~ & in "Driving instruc­
tions".
Tire pressure
When towing a tra iler, inflate the tires of yo ur veh icle to the co ld tire
pressure listed unde r "Full load" on the sticker on the right doorjamb.
Inflate trailer tires to trai ler and tire manufacturers' specifications.
Lights
T he headlight settings sho uld be checked with the trailer attached
before driving off . Adjust as necessary so that you can see the road
ahead but not blind oncoming traffic.
Check p roper working of vehicle and tra iler lights.
Controls and equip­
ment Safety first Vehicle operation
Safety
chains
Be sure trailer safety chains are properly connected from the trailer
to the hitch on the vehicle. Leave enough s lack in the chains to permit
turning corners . When you install safety chains, make sure they will
not drag on the road when you are driving.
The chains should cross under the trailer tongue to prevent it from
dropping in case of separation from the hit ch. •
Driving instructions
Driving with a trailer always requires extra care and
consideration.
To obtain the best possible handling of vehicle and trailer,
please note the following:
- Do not tow a loaded trailer when your car itself is not
loaded .
- Be especially 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 distribut ion
Towing a loaded trailer with an empty car results in a highly unstable
distribution of we ight. If th is cannot be avoided drive at very low
speeds only to avoid the risk of losing steering control.
A "balanced " rig is easier to operate and control. This means that the
tow vehicle should be loaded to the extent possible and permiss ible
whi le keeping the trai ler as light as possible under the circumstances .
Whenever possible, transfer some cargo to the luggage compart-
Vehicle care Do-it-yourself service Technical data

___ C_ h_ e_c _k _i _ n _g ~ a_n _d_ f_il _l_in _ g _________________________________________ _
Closing the engine hood
- Pull the hood down until the pressure from the strut is
reduced.
- Let the hood
drop down and latch in place . Do not try to
push it shut;
it may fail to engage=> &.
& WARNING
A hood that is not completely latched could fly up and block your
view while driving.
• When you close the engine hood, check it to make sure the
safety catch has properly engaged. The hood should be flush with
the surrounding vehicle body parts.
• If you notice while driving that the hood is not secured prop­
erly, stop at once and close it. •
Working in the engine compartment
Be especially careful whenever you work in the engine
compartment!
Whenever you must perform any work in the engine compartment,
for example checking and filling different fluids, there is a risk of
injury, burns and accidents. To prevent personal injury always
observe the following WARNINGS. The engine compartment of any
vehicle is a hazardous area!~
&
& WARNING
To help avoid injury, before you check anything under the hood :
• Turn off the engine.
• Remove the ignition key.
• Set the parking brake fully.
& WARNING (continued)
• Move selector lever of automatic transmission to "P" (Park);
put manual transmission in Neutral.
• Always let the engine cool down. Hot components will burn
skin on contact.
• To reduce the risk of being burned, never open the hood if you
see or hear steam or coolant escaping from the engine compart­
ment. Wait until no steam or coolant can be seen or heard before
carefully opening the hood.
• Keep children away from the engine compartment.
• Never spill fluids on hot engine components. They can cause a
fire.
• Never touch the radiator fan. The auxiliary electric fan is
temperature controlled and can switch on suddenly.
• Never open the coolant reservoir cap when the engine is still
warm. The coolant system is pressurized and hot coolant could
spray out!
• Protect your face, hands and arm from steam or hot engine
coolant by placing a thick rag over the cap when you open the
coolant reservoir.
• If work on the fuel system or the electrical system is necessary:
-Always disconnect the battery .
- Never smoke or work near heaters or open flames. Fluids in
the engine compartment could start a fire.
- Keep an approved fire extinguisher immediately available.
• To avoid electrical shock and personal injury while the engine is
running or being started, never touch:
- Ignition cables
- Other components of the high voltage electronic ignition
system.
• If you must perform a check or repair with the engine running: .,_