2009 AUDI S8 trailer

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& WARNING (continued )
• The Audi parking system is not a substitute for being careful
and alert when backing up. Be especially careful during parking
and similar maneuvers . Always watch where you are driving and
make sure that nothing is in the way.
• When maneuvering or parking, do not only use the MMI Display
for orientation . Certain objects • depending on the screen resolu­
tion -may not , or not entirely , be displayed ; for example trailer
hitches , chains , narrow posts , or fence s.
• Improper reliance on the Audi parking system can cause colli­
sions and serious personal injury.
- Never rely only on parking assist when changing backing up .
- Always check rear view mirrors to make sure it is safe to ba ck
up. •
Applies to veh icles : wit h Ad vanced Pa rk ing System w ith rea r view c ame ra
Notes on distance information
Fig . 205 MMI Displ ay:
di splayed red l ine
touche s the bumpe r F
ig . 206 Actu al
distan ce from bumpe r
The red line in the MMI Display~ fig. 205 indicates the distance you
should maintain from an obstacle, when parking. If an obs tac le is
l ocated at road l eve l, you can approach the obstacle unti l the red
l ine to uche s the obstac le ( 1.3
ft, or 4 0 cm , distance). On the o the r
h a n d, if an obstacle is no t locat ed a t road level (the bu mpe r of a
vehic le, for examp le), you should not approach this obstac le unti l
t h e red line touc hes the obstacle.
F or instance, if you back u p toward another vehicle, it will a ppear as
thou gh the gui de help line s and s urface s are be ing pushed over the
vehic le behind you~ fig. 205 . In this example, it can be reco gnized
in the M MI Display that t he re d l in e exac tly touc hes the bum per o f
th e ve hicle behind you . Ind eed, however, the red line@~ fig. 206
does not touch the bumper, b ut has rather been pushed underneath
t h e b umpe r. T h e actual d istance (dashed line G) l to the vehicle
behind you is meanwhile less than 1.3 ft ( 40 cm). Your vehicle
bu mper must als o be taken into co nsiderat ion for the d istance
~&. .
& WARNING
• Please note that objects not touch ing the ground can appear to
be further away than they really are (for example , the bumper of a
parked vehicle , a trailer hitch, or the rear of a truck) . In this case ,
you should not use the guide help lines to measure distance -
danger of accident ! .,_

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& WARNING (continued)
• Maintain plenty of distance from an obstacle, so that your
outside mirror or a corner of your vehicle does not collide with any
obstacles -danger of accident!
• The Audi parking system is not a substitute for being careful
and alert when backing up. Be especially careful during parking
and similar maneuvers. Always watch where you are driving and
make sure that nothing is in the way.
• When maneuvering or parking , do not only use the MMI Display
for orientation. Certain objects -depending on the screen resolu­
tion -may not, or not entirely, be displayed; for example trailer
hitches , chains, narrow posts, or fences . •
Appl ies to vehicles: with Advanced Park ing System with rear view came ra a nd a trailer hitch
i nsta lle d acco rding to fac tory s pecif ications
Towing hitch
For vehicles with a trailer hitch installed according to factory speci­
fications, the rear acoustic parking sensors are not activated when
the vehicle is put in reverse gear while an electrical connection to
the trailer socket* is established. No distance alert occurs in the rear
~ page 173. The rear-view camera picture~ page 176 is displayed
wi thou t orienta tion lines and without blu e surfaces .•
Controls and equip ­
ment
Settings in the MMI
A pplies to v ehicles: with Advanc ed Park ing System w ith rear view camera
Adjusting the chimes -option 1
The volume and the pitch (frequency) of the chimes can
be adjusted in the MM/.
Press the [CAR] function button.
Select
Systems in the CAR menu.
- Select
Audi parking system .
Fig. 207 MMI display :
Selection menu
- Select Front volume to change the volume of the front
audible signal generator, or
Rear volume to change the
volume of the rear audible signal generator.
Select
Front frequency to change the frequency of the
front audible signal generator or
Rear frequency if you
want to change the frequency of the rear audible signal
generator.
When you adjust the volume and frequency, the new setting will
sound for approximately 2 seconds from the signal generator
affected.
I • •

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& WARNING (continued )
Be especially careful to check for small children and animals
before backing up . Small children and animals will not always be
shown in the rear-view display .
• The Audi parking system is not a substitute for being careful
and alert when backing up . Be especially careful during parking
and similar maneuvers . Always watch where you are driving and
make sure that nothing is in the way .
• Do not allow yourself to be distracted from traffic by the rear­
v iew camera pictures.
• When maneuvering or parking , do not only use the MMI Display
for or ientation . Certa in objects -depending on the screen resolu­
tion -may not , or not entirely , be di splayed; for example trailer
hitches , chains , narrow posts , or fences .
• Only use the rear -view camera for aid if it shows a good, clear
picture . The image may be obscured , for example , by the sun
shining into the lens, dirt on the lens , or as the result of a defect ·
danger of accident!
• If the image is hazy when the MMI Display is switched on or the
area behind the vehicle is not visible (for example , as the result of
a dirty or defective lens ), the rear -view camera must not be used
for aid in maneuvering -danger of ac cident!
• The rear -view camera generates two -dimensional images . For
this reason, please note that recesses in the ground and
protruding parts on another vehicle , or protruding objects fixed to
the ground , will be more difficult or impossible to recognize on the
MMI Display, due to the missing spacial depth.
• If the position and the installation angle of the camera has
changed , for example, after a rear end collision, do not continue to
use the system for safety reasons . Have it checked by an autho­
rized Audi dealer or qualified workshop .
• Only use the rear-v iew camera when the rear lid is fully closed.
Make sure that objects mounted on the rear are not obscuring the
camera v iew .
Controls and equip ­
ment
& WARNING (continued )
• Remove ice, preferably with de-icing spray .
0 Note
• Never use warm or hot water to remove snow or ice from the
rear -view camera lens -danger of crack format ion on t he lens!
• Whe n cleani ng t he le ns, neve r use care p ro d uc ts wi th a n abr a­
s ive effect.
[ i ] Tips
The positio ns of t he orientation lines/ surfaces are disp laced up or
down if the par king p rocess is car ried out with the rear -view camera
i n A dap tive A ir Susp ens ion
=> p ag e 2 1 dyna m ic or lift mode. T here ­
fore , the accuracy is red uced. •
I • •

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[ i] Tips
The vehicle jack mode is switched off automatically at speeds above
9 mph (15 km/h). •
Towing a Trailer
Automatic lowering is not desirable when towing a trailer.
Fig. 214 MMI display :
Activate towing opera­
tion
If you are going to tow a trailer, you must activate the trailer
towing mode.
Switching the trailer towing mode on and off
manually
- Press the ICAR)function button. The main menu
Adaptive Air Suspension appears.
- Press the !SETUP] function button. The menu
Adaptive
Air Suspension
appears ~ fig. 214.
- Select
Trailer towing mode on or off as desired.
Level Adjustment when Towing a Trailer
The following applies to vehicles with Adaptive Air Suspension: • Before
hitching up the trailer
and before adjusting the tongue
weight at the trailer, the automatic or standard mode
must be
selected, so that the vehicle is at normal level=>
page 191, "Setting
the Driving Modes".
• If driving in dynamic mode is desired, this mode
must be
selected before hitching up the trailer and before adjusting the
tongue weight . However, note that your vehicle is lowered and
ground clearance is reduced.
• If you have to drive under difficult road conditions, you can
select lift mode after hitching up the trailer or after adjusting the
tongue weight .
The following applies to vehicles with
sport suspension Adaptive Air
Suspension -Sport*:
• Before hitching up the trailer
and before adjusting the tongue
weight at the trailer, the automatic, standard or dynamic mode
must
be selected, so that the vehicle is at normal level=> page 191,
"Setting the Driving Modes".
• If you have to drive under difficult road conditions , you can
select lift mode after hitching up the trailer or after adjusting the
tongue weight .
Restrictions when Operating with a Trailer
When operating with a trailer, the lift mode can only be selected up
to about 25 mph (40 km/h). The system automatically goes out of lift
mode when speed exceeds about 31 mph (50 km/hl.
If the vehicle is in automatic, standard or lift mode before the trailer
towing mode is activated, the dynamic mode cannot be activated -
except on vehicles with
sport suspension Adaptive Air Suspension -
Sport*.
If the vehicle is in dynamic mode before towing operation is acti­
vated, it can be driven in this mode. If the suspension is shifted from
this mode to automatic mode, dynamic mode cannot be re-selected.~

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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 additional load
wi ll affect durability, economy and performance.
Trai ler 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 operating and driving instructions
provided and use common sense.
0 Note
If you are going to tow a trai ler, you must activate the trailer opera­
tion mode =>
page 192, "Towing a Trailer".
Technical requirements
Tra iler hitch
Use a weight-carrying hitch conforming to the gross trailer weight .
The hitch must be suitable for your vehicle 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 with the trai ler hitch manufacturer to make sure that
you are using the correct hitch .
Do not use a bump er hit ch.
The hitch must be installed in such a way tha t it does not interfere
with the impact-absorbing bumper system. No modifications should be made to the vehic le exhaust and brake systems. From time to time, check that all hitch mounting bolts remain securely
fastened.
When you are no
t towing a trailer, remove the traile r hitch ball
mount. This prevents the hitch from causing damage shou ld your
vehic le be struck from behind=>& .
Traile r br akes
If your trailer is equipped with a braking system, check to be sure
that it conforms to al l regu lations .
The trai ler hydraulic brake system must no t be direct ly connected to
the vehicle's hydraulic brake system.
S afet y c hains
Always use safety chains between your vehicle and the trailer.
Trailer light s
Trailer lights must meet all regulations. Be sure to check with your
Audi dealer for correc t wiring, swi tches and relays .
Mirrors
If you are unable to see the traf fic behind you using the regu lar
outside mirrors, then you
must install extended mirrors. It is impor­
tant that you
always have c lear vision to the rear.
& WARNING
After rem oving the tr aile r hitch , do not store it in your vehi cle. In
ca se of sudde n braking , the hit ch co uld fl y for ward and injure you
or your p asseng ers. a

Operating instructions
Max im um tra iler weight
A trailer for your vehicle is limited to a typical class 1 or class 2
trailer.
T ra ile r l oa d di stributio n
Be sure the load in the trailer is he ld securely in place to prevent it
from shifting forward, backward or sideways .
Never allo w a passe nger to r ide in a tr aile r~ & in "Driving instruc­
tions" .
Engin e c oolin g sys te m
Towing a trailer makes the eng ine 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 pr ess ure
When towing a trailer, inflate the tires of your vehicle to the 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 trai ler 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 sure traile r safety chains are properly connected from the trailer
to the hitch on the vehicle. Leave enough slack in the chains to
perm it turning corners . When you i nsta 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
Tr
aile r t owing
0 Note
If you are going to tow a trai ler, you must activate the trailer opera­
tion mode ~
page 192, "Towing a Trailer". •
Driving instructions
Driving with a trailer always requires extra care and
consideration.
To obtain the best possible handling of veh icle and trailer,
please note t he following :
- Do not tow a loaded trailer when your car itself is not
loaded.
Be espec ia lly careful whe n passing other vehicles.
- Observe s peed limits .
Do not drive at the maximum permiss ible speed .
Always apply brakes ear ly.
Moni tor t he temperature ga uge.
Weight distr ibution
Towing a loaded trailer with an empty car results in a highly
unstable distr ibution 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
the tow vehicle should be loaded to the extent possible and perm is ­
s ib le, while keeping the trailer as light as possib le under the circum ­
stances . Whenever possible, transfe r so me cargo to t he 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

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Speed
The higher the speed, the more difficult it becomes for the driver to
control the rig. Do not drive at the maximum permissible speed. Reduce your speed even more if load, weather or wind conditions
are unfavorable -particularly when going downhi ll.
Reduce vehicle speed
im med ia tel y if the trailer shows the slightest
sign of swaying.
Do not try to s top the swayi ng by accelerating.
Observe speed limits. In some areas, speeds for vehicles towing
trai lers are lower than for regular vehicles .
Always apply brakes ear ly. When driving downhill, shift into a lower
gear to use the engine braking effect to slow the vehicle. Use of the
brakes a lone can cause them to overheat and fail.
C ool ant t emp era tur e
The coolant temperature gauge=> page 12 must be observed care­
fully. If the needle moves close to the upper end of the scale, reduce
speed immed iately and/or turn off the air conditioner.
If the coolant temperature warning light in the instrument cluster
starts flashing
- F- , pull off the road, stop and let the engine idle for
about two minutes to prevent heat build-up.
& WARNING
A nyo ne n ot properly re str aine d in a moving vehi cle i s at a mu ch
g re ater ri sk in an accident . Never let any on e r ide in y our car who
is n ot pr operl y wea ring th e re stra ints pr ovided b y Audi . •
Trailer towing tips
Important to know
Your vehicle handles differently when towing a trailer because of
the additional weight and different weight distribution. Safety, performance and economy will greatly depend on how carefully you
l
oad your trailer and operate your r ig.
Before you actually tow your trailer, practice turning, stopping and
backing up in an area away from traffic . Keep practicing unti l you
have become comp letely familiar with the way your vehicle-trai ler
combination behaves and responds.
Back ing up is difficult and requires practice. Backing up with a
trailer generally requires steering action opposite to that when backing up your vehic le without a tra iler.
Ma intain a greater distance between your veh ic le and the one in
front of you . You will need more room to stop. To compensate for
the trai ler, you w ill need a larger than norma l turning radius.
When passing, remember that you cannot accelerate as fast as you nor mally wou ld because of the added load . Make su re you have
enough room to pass. After passing, allow plenty of room for your
trai ler befo re changing lanes again .
Avoid jerky starts, sharp turns or rapid lane changes.
[ i ] T ips
• Do not tow a trailer during the break -in period of your vehicle.
• I f you tow a trailer, your Audi may require more frequent main te­
nance due to the extra load=>
page 382. •
Parking on a slope
Do n ot park on a slope with a trailer. If it cann ot be
avoi ded, do so only after d oing the followi ng:
When p arking :
-Apply the foot brake.
- Have someone p lace chocks under both the vehicle and
the trailer wheels. ._

Tires and wheels -
----------------
•
& WARNING (continued)
• The brakes on a vehicle that has been overloaded may not be
able to stop the vehicle within a safe distance.
• Tires on a vehicle that has been overloaded can fail suddenly
causing loss of control and a crash.
• Always make sure that the total load being transported -
including the weight of a trailer hitch and the tongue weight of a
loaded trailer -does not make the vehicle heavier than the
vehicle's Gross Vehicle Weight Rating.
& WARNING
• Incorrect tire pressures and/or underinflation can lead to a
serious or fatal accident.
• Incorrect tire pressures and/or underinflation cause increased
tire wear and can affect the handling of the vehicle.
• Incorrect tire pressures and/or underinflation can also lead to
sudden tire failure, including a blowout and sudden deflation,
causing loss of vehicle control. •
Checking tire pressure
The correct tire pressure for the tires originally installed
on your vehicle is listed on the tire pressure label located
either on driver's side 8-pillar or inside the fuel filler flap.
The recommended tire pressures are on the tire pressure label and
in the table~
page 330, "Cold tire inflation pressure".This means
that the pressure must be checked and adjusted when the tire has
not been driven for more than a couple of miles (kilometers) at low
speeds during the previous three hours. Air in the tires expands
when the tire heats up as a result of internal friction as it flexes in
use. The tire pressure is higher when the tire has warmed up than
when it is "cold ." It
is the inflation pressure in a "cold" tire that counts. Therefore, you
should never let air out of a warm tire to match "Cold tire inflation
pressure" recommendations~
page 330. The tires would then be
underinflated and could fail suddenly.
The tire pressure label on your Audi lists the recommended cold tire
inflation pressures at maximum capacity for the new, original equip ­
ment tires that were on your vehicle at the time it was manufac­
tured. For the location of the label
~ page 330, fig. 274.
Most tires lose air naturally over time. They can also lose some air if
you drive over a pothole or hit a curb while parking. It is usually not possible to see whether the radial tires used today are underinflated
just by looking at them.
Therefore, be sure to check tire pressures at least once a month and
always before going on a long trip. Make sure to take the number of
people and the amount of luggage into account when adjusting tire
pressure for a trip -even one that you would not consider to be
"long ." See~
page 335, "Tires and vehicle load limits" for more
important information.
Always use an accurate tire pressure gauge when checking and
adjusting inflation pressures . Check all of the tires and be sure not
to forget the spare tire . If the pressure in any tire is too high when
the tire is "cold," let air out of the tire slowly with the edge of the tire
gauge and keep checking the pressure until you reach the pressure
that is correct for the load (passengers and luggage) and kind of
driving you plan to do.
If the pressure in any tire is too low, note the difference between the
pressure in the cold tire and the pressure you need and add the air
that you need to reach the correct pressure for the vehicle load
(passengers and luggage) for the tires on your vehicle as listed on
the on your vehicle and in this manual and the kind of driving you
plan to do.
Never exceed the maximum inflation pressure listed on the tire
sidewall for any reason.
Remember that the vehicle manufacturer, not the tire manufacturer,
determines the correct tire pressure for the tires on your vehicle. .,,_
Vehicle care I t •