2008 AUDI S8 ECU

easy-to-use attachment and minimize the possibility of improper
child restraint installation.
All child restraints manufactured after September 1, 2002, must
have lower anchorage attachments for the LATCH system.
Please re member that the lower anchorage points are only intended
for installation and attachment of chi ld restraints specifically certi ­
fied for use with LATCH lower anchorages. Child restraints that are
not equipped with the lower anchorage attachments can still be
installed in compliance with the child restraint manufacturer's
instructions on using vehicle safety be lts .
& WARNING
Improper installation of child restraints will increase the risk of
injury in a crash.
• 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 243 , "Child
Safety".•
Child Safety
Guidance fixtures far lower anchorages
Special guidance fixtures increase the convenience of the
lower anchorages and are available from your authorized
Audi dealer.
Fig. 247 Outer rear
seats : in stallin g the
guidance fixtures
Fig. 248 Close-up:
fitting the guidance
fixture over the lower
anchorage bracket
T h e lower anchorage attachment points are located on the
rear seats between th e seatback and the seat cushion.
Spec ial guidan ce fixtures increase the co nvenience of the
lower anchorages and help protect th e seat material from
possible damage when installing child restraints that have
rigid lower anchorages and not straps with hooks.
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•
Vehicle care I I irechnical data

--~C:!:h ~i~
ld ~ S~a ~f ~e ~t ,rY ____________________________________________ _
Installing the guidance fixtures
- Push down on the seat cushion so that the lower anchor ­
ages are visible.
- Hold the guidance fixture with the part number facing downward and push it in the direction of the arrow onto
the
anchorage => page 259, fig. 248.
- Make sure that each of the two guidance fixtures per seat snaps into place.
Removing the guidance fixtures
- Remove the child restraint according the child restraint manufacturer's instructions.
- Push down on the seat cushion so that the lower anchor ­
ages are visible.
- Pull off the guidance fixtures from the lower anchorages.
-Always remove the guidance fixtures and keep them in a
safe place when not in use.
You may find it easier to install child restraints equipped with hooks
attached to straps without the guidance fixtures in place . If this is
the case, remove the guidance fixtures by pulling them off the
anchorages. However, the guidance fixtures can help you to locate
the
LATCH anchorages.
& WARNING
Improper use of tether anchorages or lower anchorages can cause
serious personal injury in a crash.
• Always carefully follow the child restraint manufacturer's
instructions for proper installation and use of child restraint
systems.
& WARNING (continued)
• Never use the LATCH or tether anchorages to attach safety
belts or other kinds of occupant restraints.
• Child restraint tether attachments and lower attachments are
only designed to secure a child restraint that has been equipped
to use these anchorages.
• Tether anchorages and lower anchorages are designed to with­
stand only those loads imposed by correctly fitted child restraints.
Under no circumstances can they be used safely for adult or child
safety belts or harnesses.
• Never mount more than one child restraint to a single tether or
to a lower anchorage point. Attaching two child restraints to a
single anchorage point can cause the anchorage to fail and cause
serious personal injury in a crash.
0 Note
• Remove the guidance fixtures before folding the rear seatback to
prevent damaging the seat cushion.
• If you leave the guidance fixtures installed for several days, they
could leave a mark on the upholstery on the seat cushion and back­
rest in the area that the guidance fixtures were installed. The uphol ­
stery would also be permanently stretched around the guidance
fixtures . This applies especially to leather seats.
[ i] Tips
• Always remove the guidance fixtures when not in use .
• Please keep the guidance fixtures in a safe place with the vehicle
when not in use. •

Installing a child restraint using the lower
anchorages of the LATCH system
Child safety seats equipped with the LATCH system can
quickly and easily be secured to the rear seats.
0 N ;;; t1.
~
Fig . 249 LATCH -type
seat with both latch
bars extended
Fig. 250 Installation of
child safety seat with
rigid latches on bars
Whenever you install a child restraint always refer to the
child restraint manufacturer's instructio ns .
-Make sure the seat back of the rear seat bench is in the
uprig ht positio n and securely latched in place.
-Insta ll the guidance fixtures ~ page 259.
-Insert the latches onto the lower anchorages==> fig. 250.
Child Safety
-Make sure you hear the child restraint click securely into
place. This indicates that the seat is securely mounted on
the anchors.
-Pull on the child restraint once you have mounted it to
make sure it is secure.
& WARNING
Improper use of the LATCH system can increase the risk of serious
personal injury and death in an accident.
• These anchors were developed solely 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 243, "Child Safety". .,
Vehicle care I I irechnical data

___ C_h _i_ld _ S_a _f_e _t ~y ____________________________________________ _
0 Note
On vehicles with power individual rear seats* some criteria must be
observed when attaching the child restraint using the
LATCH
system:
• To attach the child restraint securely, the seat must be moved to
the farthest rear position, the seat height set to the lowest position and the head restraint must be adjusted to the vertical position
=> page 97.
• If a child safety seat is attached to one of the rear seats, this seat
must not be adjusted using the power controls under any circum­
stances. The easy entry function for this seat must also be deacti ­
vated in the
MMI => page 100 . The child safety seat as well as the
rear seat can be damaged by the adjustment process .•
Mounting and releasing the anchorage hook
If you use a child restraint system with hooks or other
latches attached to adjustable straps.
Mounting
- Press the anchorage hook with the spring catch release
onto the lower anchorage so that the anchorage hook
locks into place .
- Pull on the anchorage hook to make sure that it has
securely engaged the lower anchorage.
- Tighten the strap following the child restraint manufac­
turer's instructions.
Releasing
-Loosen the tension on the strap following the child
restraint manufacturer's instructions .
- Depress the spring catch on the hook. -
Hold the spring catch in depressed position.
-Move the hook in the direction of the vehicle floor so that
there is enough space to release the anchorage hook
from the lower anchorage.
& WARNING
• Improper installation of child restraints will increase the risk of
injuries in a crash.
• Always refer to 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.
•
Tether anchors
Fig . 251 Tether
anchors: recess flaps
behind the rear seat­
backs
Beginning with model year 2000 , the rear seating positions are
equipped with three tether anchors .
The tether anchors for the three rear seating positions are located
in recesses in the rear window
shelf=> fig. 251 . Vehicles with power
individual rear seats* are equipped with two tether anchors.
.,

& WARNING
Improper installation of child restraints will increase the r is k of
injury and death in a crash .
• Improper use of child restraint an chors (tether anchors ) could
lead to injury in a collision. The anchor s are designed to withstand
only tho se loads imposed by correctly fitted child restraints .
• Never mount two child restraint systems on one LATCH lower
anchor point .
• Never attach two child restraint sy stems to one tether strap or
tether anchorage .
• Always follow the instructions provided by the manufacturer of
the child restraint you intend to install in your Audi .
• Never use child restraint tether anchorages to secure safety
belts or other kinds of occupant restraints.
• Never atta ch a tether strap to a tie -down hook in the luggage
compartment.
• Never secure or atta ch any luggage or other items to the LATCH
lower anchorages or to the tether anchors .
• If a tether or other strap is used to atta ch a child restraint to the
front passenger seat , make sure that it is not so tight , that it
c auses the weight -sensing mat to measure more weight than is
actually on the seat.
• The heavier weight registered can make the 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. •
Child Safety
Tether strap
A tethe r is a st raight or V-s hape d s trap t hat atta ch es the
to p pa rt of a chil d re st ra int to s peci al a ncho rag e poin ts in
t h e vehicle.
Fig . 252 Tether strap:
prope r routing and
mounting
The p urpose of the tether is to reduce the forward movement of the
c hi ld restraint in a crash, in o rde r to he lp reduce th e risk o f head
injury that could be caused by striking the vehicle interior.
F o rward facing c hild res train ts manufact ure d after Sep tember 1 ,
1999, are required by U.S . federal r egulations to comply with child
head m ovement perfor mance requ iremen ts . T h ese new pe rfo r­
mance requirements make a tether necessary on most new child
safety seats .
& WARNING
Improper installation of child restraints will increase the risk of
injury in a crash .
• Never attach a child safety seat tether strap to a tie -down hook
in the luggage compartment .
• Never secure or attach any luggage or other items to the LATCH
lower anchorages or to the tether .
• 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
._
I .
Vehicle care I • irechnical data

___ C_h_ i_ld _ S_ a_ f_ e_ t-= y'-------------------------------------------------
& WARNING (continued)
causes the weight-sensing mat to measure more weight than is
actually on the seat.
• The heavier weight registered can make the 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 .•
Using tethers on rear-facing child restraint
systems
Currently, few rear-facing child restraint systems come with a tether.
Please read and heed the child restraint system manufacturer's
instructions carefully to determine how to properly install the
tether.
& WARNING
A child in a rearward -facing child safety seat installed on the front
passenger seat will be seriously injured and can be killed if the
front airbag inflates -even with an Advanced Airbag System.
• The inflating airbag will hit the child safety seat or infant
carrier with great force and will smash the child safety seat and
child against the backrest, center arm rest, or door .
• A tight tether or other strap on a rearward-facing child restraint
attached to the front passenger seat can put too much pressure
on the weight-mat in the seat and register a heavier weight in the
Advanced Airbag System. The heavier weight registered can make
the 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,
& WARNING (continued)
immediately install the rear-facing child safety seat in a rear
seating position and have the airbag system inspected by your
Audi dealer .
•
Securing the upper tether strap to the anchor
bracket
Fig . 253 Tether strap:
proper routing and
mounting
Securing the child restraint tether strap to the
tether anchor
- Release or deploy the tether strap on the child restraint
according to the child restraint manufacturer's usage instructions.
- Guide the upper tether strap
under the rear head
restraint => fig. 253 (raise the head restraint if necessary).
- Tilt the recess flap -detail
view-~ fig. 253 up to expose
the anchor bracket.
- Slide the tether strap hook over the anchor bracket.
- Pull on the tether strap hook so that the spring catch of
the hook engages. _.

llffll.___T_ r_a _il _e_ r_ t_o _w_ i_ n """g"'- ---------------------------------------------------
Trailer towing
Driving with a trailer
General information
Your Audi was designed primarily for passenger transpor­
tation.
If you plan to tow a trailer, please remember that the add it ional load
wi ll affect durability, economy and performance.
Tra iler towing not on ly p laces more stress on the vehicle, it a lso ca lls
for more concentration from the driver.
For this reason, always fol low the ope rating and driv ing instruc tions
provided and use common sense.
(D Note
If you are go ing to tow a trai ler, you must activate the trailer opera ­
tion
mode => page 189, "Towing a Trailer". •
Technical requirements
Traile r hit ch
Use a we ight-carrying hitch conforming to the gross trai ler weight.
The hitch must be suitable for your vehic le and trailer and must be
mounted secure ly on the ve hicle's chass is at a
technically sound
location. Use only a trailer hitch with a removable ball mount.
Always check wit h the trai ler hitch manufacturer to make s ure that
you are using the correct hitch .
Do not use a bumper hit ch.
The hitc h must be installed in such a way t hat it does not interfere
with the impact-absorbing bumper system. No modifications
should be made to the veh ic le exhaust a nd brake systems. F rom time to time, check that all hitch mounting bolts remain secure
ly
fastened .
When yo u are no t towing a trailer, re move the tra ile r hitch ball
mount. This prevents the hitch from causing damage shou ld your
vehic le be struck from
behind =>& .
Traile r br ake s
If your tra iler is equipped with a braking syste m, check to be sure
that it conforms to al l regu lations .
The tra iler hydraul ic brake sys tem must not be di rect ly co nnected to
t he vehic le's hydrau lic brake system .
Safety chains
Always use safety chains between your vehicle and the trailer.
Trailer light s
Trai ler lights must meet a ll regulations. Be sure to check with your
Aud i dea ler for correc t wir ing, sw itch es and relays .
Mirrors
If you are unable to see the traf fic behind you using the regu lar
outside mirrors, then you
must instal l extended mirrors. It is impor ­
t ant that you
always have c lear v ision to the rear.
& WARNING
After removing the tr ailer hitch , do not store it in your vehi cle . In
ca se of sudden braking , the hitch could fl y forward and injure you
or your p assenger s.•

____________________________________________________ T_r_a _i_l e_ r_t_ o _ w_ i
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Operating instructions
M ax im um tra iler weig ht
A trailer for your vehicle is limited to a typ ical c lass 1 or class 2
trailer.
T ra ile r l oad d is tributi on
Be sure the load in the trailer is he ld securely in place to prevent it
from shifting forward, backward or s ideways .
Never a llow a pass enger to r ide in a trailer:::::, & in "Driving instruc­
t ions" .
Engin e coo lin g sys te m
Tow ing a trai ler makes the engine work harder. It is important that
the cooling system's performance is up to the additiona l load. Make
sure that the coo ling system has enough fluid .
Tire press ure
When towing a trailer, inflate the tires of your veh icle to t he co ld tire
pressure listed under "Full load" on the labe l located either on the
driver's side B -pil lar (visible when the door is open) or inside the fuel
filler flap . Inflate trailer tires to trai ler and tire manufacturers' spec­
ifications.
L ig ht s
The head light settings should be checked wit h the trai ler attached
before driving off. Check to make sure both vehicle and trai ler lights
are working properly .
Safe ty c ha in s
Be s ure trailer safe ty chains are properly connected from the trailer
to the hitch on the vehicle. Leave enough slack in the chains to
permit turning corners . When yo u insta ll safety chains, make sure
they will not drag on the road when you are driving.
T he chains should cross under the trailer tongue to prevent it from
dropping in case of separat ion from the hitch.
Controls and equip­
ment Safety first
Vehicle operation
0 Note
If you are go ing to tow a trai ler, you must activate the tra iler opera­
tion
mode :::::, page 189, "Towing a Trailer". •
Driving instructions
Driving with a trailer always requires extra care and
consideration.
To obtain the best possib le handling of ve hicle and trailer,
p lease note t he following :
- Do not tow a loaded trailer when your car itself is not
loaded.
- Be especia lly careful whe n passing other vehic les .
- Observe speed limits .
- Do not drive at the maximum permiss ible speed .
- Always apply brakes early.
- Monitor t he temperature ga uge .
W eight d istr ibu tion
Towing a loaded trailer with an empty car results in a highly
unstable d istribution of weight. If this 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
t he tow vehicle should be loaded to the extent possible and permis ­
sib le, while keeping the trailer as light as possib le under the circum ­
stances . Whenever possible, transfer some cargo to the luggage
compartment of the tow vehicle whi le observing tongue load
requirements and vehicle loading considera tions .
.,,.
Vehicle care Do-it-yourself service Technical data