ABS AUDI A5 CABRIOLET 2010 User Guide

Safety belts protect
People think it's possible to use the hands to brace the
body in a minor collision. It's simply not true!
Fig . 1 9 1 Driv er is
c or re ct ly re stra ine d in
a s udden bra k ing
m ane uv er
Safety belts used properly can make a big diffe rence. Safety belts
help to keep p assengers in the ir seats, gradually reduce energy leve ls
applied to the body in an accident, and help prevent the uncontrolled
movemen t that can cause serious injuries . In add ition, safety belts
reduce the danger of being thrown out of the vehicle.
Safety be lts attach passengers to the car and give them the benefit of
being slowed down mo re gent ly or "softly" through the "give" in the
safety belts, crush zones and other safety features engineered into
today 's vehicles. By "absorbing" the k ineti c ene rgy over a longe r
period of time, the safety belts make the forces on the body more
"tolerable" and less likely to cause injury.
Al though these exam ples are based on a frontal co llision, safety belts
can also substantia lly reduce the risk of injury in other kinds of
crashes. So, whethe r you're on a long tr ip or just go ing to the corner
store, always bu ckle up and make sure others do, too. Accident statis­
ti cs show t hat vehicle occupants properly weari ng s afety belts have a
lower risk of being injured and a much better chance of surviving an
acc iden t. Prope rly usi ng sa fe ty belts a lso great ly increases the ab ility
of the supplemental a irbags to do their job in a collision. For this
reaso n, wearing a safety belt is lega lly requ ired in most countr ies
including much of the United States and Canada.
Safety first Vehicle OP-eration
Safety belts
Although your Audi is equipped with a irbags, you still have to wear
the safe ty belts provi ded. Fron t airbags, for ex ample, are activa ted
only in some frontal collisions. The front a irbags are not act ivated in
all fronta l co llisions, in side and rear co llisions, in roll overs or i n cases
whe re there is not enough decelerat ion through impact to the front
of the vehicle . The same goes for the ot her airbag systems in your
Audi. So, always wear your safety bel t and make sure eve rybody in
your vehicle is properly restrained! •
Important safety instructions about safety
belts
Safety belts must always be correctly positioned across
the strongest bones of your body.
- Always wear safety belts as illustrated and described in
this chapter.
- Make sure that your safety belts are a lways ready for use
and are not damaged .
& WARNING
Not wearing safety belts or wearing them improperly increases
the risk of seriou s personal injury and death. Safety belts can work
onl y when used correctly .
• Always fa sten your safety belts correctly before dr iving off and
m ake sure all passengers are correctly restrained .
• For ma ximum protect ion, safety belts must always be posi­
tioned properly on the body .
• Never st rap more than one person , including small ch ildren,
into any belt.
• Never place a safet y belt over a child s itting on you r lap.
• Always keep feet in the footwell in front of the seat while the
veh icle is being driven. .,
Vehicle care Do-it-yourselt service iTechnical data

ffl..,___A_ i_rb _ a_,g,:;._ s_, y'- s_ t_e _m ________________________________________________ _
listing of the child res traints that were used to certify your vehicle's
compliance with the US Safety Standard
~ page 224,
• weight less than a thresho ld level stored in the contro l unit is
detected on the front passenger seat.
When a perso n is detected on the front passenger seat, weigh ing
more than the tota l weight of a child that is about 1 year old
restra ined in one of the rear-facing or forward-fac ing infant
restraints (listed in Federal Motor Vehicle Safety Standard
208 with
w hich the Advanced Ai rbag System in you r ve hicle was cert ified), the
front airbag on the passenger s ide may or may not dep loy .
T he
PA SSEN GER AIR BAG OFF light comes on when the elect ronic
control un it detects a total weight on the front passenger seat that
requires the front airbag to be turned off. If the
PAS SENGER AIR
BAG OFF
light does not come on, the front a irbag on the passenger
side has not been turned off by the control unit and can deploy if the
cont rol unit senses an impact that meets the conditions stored in its
memory .
If the total weight o n the fron t passenge r seat is more than that of a
typical
1 year-old, but less than the weight of a small adult, the fron t
airbag on the passenge r side may deploy (the
PASSENGER AIR BAG
OFF
light does not come on).
F o r example , the ai rbag may deploy if:
• a small chi ld tha t is heavie r th an a typ ica l 1 year-o ld child is on the
front passenger seat (regard less of whether the chi ld is in one of the
child safety seats listed ~
page 224),
• a child who has outgrown child restraints is on the front passenge r
seat.
If the front passenger a irbag is turned off, the
PASSENG ER AIR BAG
OFF
light in the center of the instrument panel wi ll come on and stay
on .
The front a irbag on the passenger side may
not deploy (the
PASSENGER AIR BAG OFF l ight does no t ill um inate and s tay lit) if:
• a small adu lt or teenager is on the front passenger seat •
a passenger who is not sitting upr ight w ith their back against a
non-recli ned backrest w ith their fee t on the vehi cle floor in front of
the seat is on the front passe nger seat.
If the front passenger airbag deploys, the Federal Standard requires
the airbag to meet the "low risk" deployment criter ia to help reduce
the risk of inj ury through interaction with the a irbag. "Low r isk"
dep loymen t oc cur s in those crashes t hat take pl ace at lower de celer­
ations as defined in the electronic contro l unit.~
page 211
Alway s remember: Even though your ve hicle is eq uipped with
Adva nced A irbags, the safest place for children is properly restra ined
on the back seat. Please be sure to read the important information in
the sections that follow and be sure to heed all of the WAR NINGS.
& WARNING
To reduc e the risk of injur y when an airbag inflates , alwa ys wear
s a fet y belt s properl y.
• If you are un restrained, leaning forward, s itting sideways or
ou t o f po sit ion in any way , your r isk of injury i s much higher .
• You will also receive seriou s injuries and could e ven be killed if
you are up against the airbag or too close to it when it inflate s -
even with an Advanced Airbag
~ p age 200.
& WARNING
A child in a rearward-facing ch ild safety seat installed on the front
pa ssenger seat will be seriou sly injured and can be killed if the
front airbag inflate s -even with an Ad vanced Airbag S ystem .
• Although the Advanced Airbag System in your vehicle is
designed to turn off the front airbag when a rearward-facing child
restraint has been installed on the front p asseng er seat , nobody
can absolutely gua rantee th at deployment i s imposs ible in all
con ceivabl e situation s that may happen during the u seful life of
your vehicle . .,_

_____________________________________________ A ~i..:_r ,::b :=:a ~g !...:: s'.:!y '..:s~ t~ e ~ m~ --
& WARNING (co ntinued )
• Always make sure that the side airbag can inflate without
interference:
-Never install se at covers or replacement upholstery over the
front seatbacks that have not been specifically approved by
Audi .
- Never use additional seat cushions that cover the areas
where the side airbags inflate .
- Damage to the original seat covers or to the seam in the area
of the side airbag module must always be repaired immedi­
ately by an authorized Audi dealer.
• The airbag sy stem can be activated only once. After an airbag
has inflated, it must be replaced by an authorized Audi dealer or
qualified technician who has the technical information , training
and special equipment necessary.
• The airbag sy st e m can be deployed only onc e. After an airbag
has been deployed, it must be replaced w ith new replacement
parts de signed and approved es pecially for your Audi model
version . Replacement of complete airbag systems or airbag
components must be performed by qualified workshops only.
Make sure that any airbag service action is entered in your Audi
Warranty
& Maintenance booklet under AIRBAG REPLACEMENT
RECORD.
• In accidents when an airbag is deployed, the vehicle battery
separates the alternator and the starter from the vehicle electrical
system for safety reason s with a pyrotechnic circuit interrupter.
- Work on the pyrotechnic circu it interrupter must only be
performed by a qualified dealer -risk of an a ccident!
- If the vehicle or the circu it interrupter is scrapped, all appli­
cable safety precautions must be followed .
Controls and equip­ ment Safety first Vehicle operation
'£' For the sake of the environment
U
ndeployed airbag modules and pretens io ners mig ht be classified as
Perch lorate Material -special handling may app ly, see
www.d ts c. ca.gov/ha za rdouswaste/pe rchlorate . W he n t he vehicle or
parts of the restraint system includi ng a irbag modules safety belts
w ith pretens io ners are s crappe d, all ap plic abl e laws and reg ulat ion s
must be observed. Your author ized Aud i dealer is familiar with these
req uir ements and we recommen d that yo u have yo ur dea le r pe rform
this service for you .•
Other things that can affect Advanced
Airbag performance
Chang ing the ve hicle's suspension system can change the way that
t he Adv anced Airbag System pe rforms in a crash . For example, using
tire-r im combinations not approved by Aud i, lower ing the veh icle,
c hang ing the st iffness o f the suspe nsio n, incl uding the s prings,
s u spension str uts, shoc k absorbe rs etc. can change the forces that
are meas ured by the airb ag sensors and sen t to the ele ctron ic con trol
uni t. Some suspension changes ca n, for examp le, increase the force
levels measu red by t he sensors and ma ke the airbag system dep loy in
crashes in which it wou ld not deploy if the changes had not bee n
made . Other kin ds of changes may re duce the force levels meas ured
by the senso rs and p revent the airbag from dep loyi ng when it should .
The sensors in the safety belt buckle for the d river and front
p assenger se at tell the e le ct ro nic co ntro l mo dule if the sa fe ty belt is
latc hed or not . If the safety be lt is be ing used, the fron t airbag w ill
dep loy at a s ligh tly hig her ra te o f ve hicl e decelerat io n t han if the
safety belt is not be ing used. T he refo re, in a part icular collis io n, it is
poss ible that an a irbag wi ll not deploy at a seating posit ion where the
safety belt is being used but wi ll inflate at the posi tion whe re the
safety belt is not bei ng used. It is important that not hing interfere
w ith the s afe ty be lt bu ckles so t hat th e sensor s can sen d the correct
information about safety belt use to the electronic contro l unit. ..
Vehicle care Do-it-yourself service Technical data

Child Safety -
-------------------"'---
- Always make su re t hat t he chi ld can proper ly wear the lap
port ion of the belt low across the th ighs or pe lvis a nd
never over the s tomac h or a bdo men.
Child ren up to at leas t 8 yea rs o ld (o ver 40 lbs. o r 18 kg) are best
protected in c hild safety seats designed for their age and weight.
E xpe rts say t hat the s ke letal str uctu re, pa rticularly t he pe lvis, of
these ch ildren is not fully deve loped, and they must not use the
vehicle safety belts without a suitable ch ild restraint.
Children up to abou t 40 lb s ( 18 kg) are bes t pro tec ted in child safety
seats des igned for the ir age and weight. Experts say that the ske letal
s tr uct ure, particula rly t he pe lv is, o f these ch ildren is no t fully deve l­
oped, and they must not use the vehicle safety belts without a suit­
able child r estrain t.
It is usually best to p ut these ch ild ren in approp riate booster seats .
Be sure the booster seat meets all a pplicable safety standar ds.
B ooster se ats raise the sea ting pos it io n of the c hild a nd reposi tion
both t he lap and shoulder parts of the safety belt so that they pass
acro ss t he child' s body i n t he righ t pla ces . Th e routin g of th e be lt ove r
the ch ild's body is very important fo r the ch ild's protection, w het her
or not a boos ter seat is used . Children age 12 and unde r m ust always
r ide in the rea r seat.
Children who are at least 4 ft. 9 in . (57 inches/1.45 meters) ta ll can
gen erally use th e vehi cle' s three poin t lap an d should er b elts. Never
use the lap belt port ion of the vehicle's safe ty be lt a lone to restra in
a ny child, reg ardl ess of how big the child is . A lw ay s re membe r tha t
children do not have the p ronounced pelvic structure required for the
pr op er f unc tion of l ap bel t po rt io n o f the vehicle 's three poin t la p an d
shoulder be lts . The child's safe ty abso lutely requires that a lap belt
port ion o f the safe ty be lt be fastened snugly and as low a s possible
around the pelvis. Never let t he lap bel t po rtion of the safety belt
pass over t he child's stomach o r ab dome n.
I n a cr ash, airbags must in flate wi thin a blink o f an eye and with
considera ble force. In order to do its job, the airbag needs room to
Controls and equip­
ment Safety first Vehicle operation
inflate so
tha t it w ill be the re to protect the occ upa nt as the occupant
mo ves forwar d into th e airba g.
A vehicle occ upant who is o ut of po sit ion and too close to the a irbag
gets in the way of an inflati ng airbag . W hen an occ upant is too close,
he or sh e will be s truck violently and will re ce ive serio us or po ssibly
even fatal in jury.
I n or der for the air bag to o ffer pr ote ction , it is import an t that all
veh icle occupa nts, espec ia lly any chi ldre n, who m ust be in the front
seat beca use of exceptiona l ci rcumstances, be p ro perly restra ined
and as far away from t he a irbag as possib le. By keepi ng room
between the child 's body and t he front of the passenge r com part ­
men t, the airbag ca n infl at e co mple tely a nd pro vid e su pp le ment al
protection in certa in frontal colli sions .
& WARNING
Not using a booster seat, using the booster seat improperly, incor­
rectly installing a booster seat or using the vehicle safety belt
improperly increases the risk of serious personal injury and death
in a collision or other emergency situation . To help reduce the risk
of serious personal injury and/or death:
• Always make sure to position the shoulder portion of the three­
point belt over the middle of child's shoulder.
• Never let the shoulder portion of the belt rest against or across
the neck , face , chin , or thro at of the child.
• Always make sure the lap belt portion of the three-po int belt is
worn snug and passes as low as possible across the child's pelvi s.
Never let the belt pass over the soft abdomen.
• Failure to properly route safety belts over a child 's body will
cause severe injuries in an accident or other emergency situation
~ page 190 .
• Children on the front seat of any car, even with Advanced
Airbags, can be seriously injured or even killed when an airbag inflates.
Vehicle care Do-it-yourself service Technical data

Intelligent technology
--------------------------------------------------' "---.L==--
The system operates across the entire speed range in combination
with the ABS system. If the Anti-Lock Brake System (ABS) malfunc­
tions, the ESP will also shut down.
How the system works
The Anti-Lock Brake System (ABS), Electronic Differential Lock (EDL)
and the Anti-Slip Regulation System (ASR) are integ rated in the elec­
tronic stabilization program . In addition to the data provided by
these functions, the ESP control unit requires additional measure­
ment data provided by high performance sensors . The rotational
speed of the vehicle about its vertical axis, vehicle acceleration in the
fore-and-aft and lateral directions, the brake pressure, and the
steering angle are all measured .
Th e direction in which the driver wishes to travel is determined with
the aid of the steering angle and vehicle speed and is con tinually
compared with the actual behavior of the vehicle. If the two do not
match, for example, when the vehicle starts hydroplaning on a wet
road, ESP will automatically brake the appropriate whee l to correct
the problem.
The vehicle is then stabilized by the forces acting on the whee l during
brak ing.
If the vehicle is oversteering (the vehicle turns too sharply
and the rear wheels slide toward the outside of a curve), the brakes
are mainly applied on the wheel that is on the outside of the curve. In
the case of a vehicle that is
understeering (the vehicle does not turn
sharply enough and pushes out of a curve), the brakes are applied as
needed on the wheel that is on the inside of the curve or additionally
on the other wheels. An acoustic signal indicates when ESP brake
application cuts in=> &.
The system operates across the entire speed range in combination
with the ABS system =>
page 245. If the Anti- Lock Brake System
(ABS) malfunctions, the ESP will be out of action as well.
Activating
When you turn on the engine, ESP will automatically be activated and
w ill perform a self-test. As soon as the test is comp leted, the system
is in normal operating mode.
Controls and equip­
ment Safety first Vehicle operation
You can activate a
deactivated ESP or deactivated ESP/ ASR if required
by pressing the =>
page 240, fig. 214 => page 240, fig. 213 button.
When they are activated, the message
ESP/ ASR on appears briefly
in the display.
Deactivating
The ESP should normally be activated all the time. If necessary, you
can deactivate Anti-Slip Regulation (ASR) or the Electron ic Stabiliza ­
tion Program (ESP) by press ing the button =>
page 240, fig. 214 .
• Deactivating ASR: Tap the button . In certain exceptional s itua­
t ions (e.g. driving with tire chains), the Anti-Slip Regu lation (ASR) can
be deact ivated =>
page 242. The message ASR off appears in the
display as we ll.
• Deactivating ESP/ASR Press the button for more than 3 seconds .
With the ESP/ASR deactivated, the ESP check light comes on, see
=>
page 14. The message ESP switched off appea rs in the display as
well.
& WARNING
The Electronic Stabilization Program is nevertheless subject to the
laws of physics. It is particularly important to pay attention to
this fact on wet and slippery roads. It is therefore important that
you always adapt your driving to the condition of the road and
traffic conditions . Do not allow the increased safety provided by
the Electronic Stabilization Program system to lull you into
accepting additional safety risks.
u
Vehicle care Do-it-yourself service Technical data

Intelligent t echnology
---------------------------------------
Electronic differential lock (EDL)
The elec tronic differen tial lock monitors the rotational
speed of the drive wheels.
G en era l not es
The electronic differentia l lock (EDL) helps the ca r to sta rt moving,
accelerate and climb a gradient on surfaces provid ing poor or almost
no grip . W ithout ED L, this would be d iff icu lt, if not impossible.
How the sy stem works
The EDL operates automatically. It mo nitors the rota tional speed of
wheels with the help of the ABS sensors=>
page 245. If a not iceab le
slip is detected at the wheels (e.g. on slippery g round on one side),
the spinn ing wheels are braked and power is transferred to the other
wheels . This is done up to a speed of about 60 mph (100 km/h).
No ises from the brake system signal that wheel sp in is being
controlled.
Driv ing off
When d riving off, always be s ure to keep road conditions in mind as
you accelerate. If one drive wheel spins because it is on a surface with
less grip, apply
plenty of throttle until the car starts to move.
O verheating of bra kes
To prevent the disc b rake of the bra ked wheel from ove rhea ting if
subjected to excessive loads on this wheel, the EDL cuts out tempo­
ra rily. The vehicle remains operat io nal and be haves in the same way
as a veh icle without EDL.
As soon as the brake has coo led down, EDL switches on again auto ­
matically.
Electronic limited slip differential
In vehicles w ith front wheel drive *, an e lectron ic lim ited slip d ifferen­
tial engages when driving on curves . The brakes are applied spec ifi­
cally to the front wheel that is on the inside of the curve. T his m ini­
m izes sliding on the front wheels and enables precise and neutral dr
iv ing t hrouge curves. The electronic lim ited slip differentia l does
no t engage whe n driving in we t cond it io ns or snow.
& WARNING
• Wh en acc elerating on slipp ery s urface s, such a s on ice or snow,
always be careful when depre ssing the accele rator pedal. Even
with the EDL and the electroni c limited slip differential working,
the dr ive wh eels can spin and reduce you r ability to control your
c ar . -Ri sk of cra sh!
• The increased safet y afforded b y EDL and the electronic l imited
slip differ ential d oes not mean th at you can take safety risks .
Alw ay s adapt your d riving st yle to the road c onditions and traffi c
si tuation.
[ i ] Tips
If a fa ult occurs in the ABS, the EDL is also not funct ioning. This is
ind icated by the ABS warn ing light=>
page 16 . •
Anti-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the driven
wheels from spinning when the car is a ccelerating.
General notes
T he Anti-Slip Regu lation System (ASR) is in tegrated in the electronic
stabilization program (ESP) . When the veh icle starts up and acceler­
a tes, the wheels are preven ted from sp inning by adjust ing the engine
power to match the amount of grip ava ilable from the road surface.
How the system works
ASR performs automatica lly, i.e. without the driver's intervent ion.
With the a id o f the ABS sensors=>
page 245, ASR moni tors the speed
of the driven wheels. If the wheels start to spin, engine torque is
reduced automatically unti l the tires find enough grip to lock onto
the road s urface. The system is active across the entire speed range . .,

Intelligent technology
--------------------------------------------------' "---.L==--
The ASR works in conjunction with the ABS. If a malfunction should
occur in the ABS, the ASR w ill also be out of action.
Activating
The ESP is automatically activated when the engine is started and it
performs a self-test. You can activate a deactivated ASR if required by
pressing the=>
page 240, fig. 214 button. When it is activated, the
message
ESP/ASR on appears briefly in the display .
Deactivating
You can deactivate the ASR if required by pressing the button (for less
than 3 seconds) =>
page 240, fig. 214. With the ASR deactivated , the
ESP check light comes on, see=>
page 14 . The message ASR off
appears in the display as well. The ASR can be deactivated at any
speed .
The ASR should normally be activated a ll the time. Only in certain
exceptional situations when some slip is desirable does it make sense
to deactivate the ASR. Examples:
• when driving with tire chains
• when driving in deep snow or on loose ground and
• when rocking the vehicle loose after it has become stuck .
When the abnormal situation is over, you should activate the ASR again.
& WARNING
The increased safety afforded by ASR does not mean that you can
take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
[I] Tips
To ensu re that the ASR works properly, all four whee ls must be fitted
with ident ical t ires. Any differences in rolling radius of the t ires can
cause the system to reduce eng ine power when this is not desired.
See also=>
page 307, "New tires and replacing tires and wheels". •
Safety first
Braking
General information
What affects braking efficiency?
Operating conditions and driving habits
The brakes on today's automobiles are still subject to wear,
depending la rgely on ope rating conditions and driving habits=>& .
On vehicles that are either driven mostly in stop-and-go city traffic or
are driven hard, the brake pads should be checked by your authorized
Audi dealer more often than specified in the
Warranty & Mainte­
nance booklet.
Failure to have your brake pads inspected can result
in reduced brake performance .
On steep slopes, you should use the braking effect of the engine. This
way, you prevent unnecessary wear on the brake system. If you must
use your brakes, do not hold the brakes down continuously. Pump the
brakes at intervals.
Noises may occur when brak ing depending on the speed, braking
force and outside cond itions such as temperatu re and humid ity.
Moisture or road salt
If you are driving faster than 31 mph (50 km/h) and the windshield
wipers are on, the brake pads will briefly touch the brake discs in
regula r interva ls so as to improve reaction time when braking on wet
surfaces. You, the driver, will not not ice anything.
Under certain condit ions, for example, when driving through water or
very heavy rai n, or even after washing your vehicle, the braking effect
can be reduced due to moisture (or in free zing conditions ice) on the
bra ke pads. A few careful brake applications should dry off the brake
pads or remove any ice coatings.
Th e effectiveness of the brakes can be reduced when the vehicle is
dr iven on a salt-covered road and the brakes are not used. H ere too,
you should clean off accumu lated salt coating from brake discs and
pads with a few careful applications of the brake=>&,.
Vehicle care Technical data

Intelligent technology
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Functioning of Anti-Lock Brake System
(ABS}
ABS prevents the wheels from locking up under braking.
The ABS contributes effectively to vehicle control since it prevents the
w heels from
locking whe n the brakes are applied . This means t hat t he
vehicle rema ins steerable and is less likely to skid.
With ABS you do not need to pump the brake. Ju st hold the brake
pedal down .
However, do not expect the ABS to shorten braking distance under all
circu mstances. When d riving on gr ave l o r on new ly falle n snow o n top
of icy s urfaces, braking distance may be even longer, therefore, under
t he se c ir cu mstances, i t is especially importa nt that you dr ive slowly
and with great care.
How the ABS system works
An a utomat ic check is made when a speed of about 12 mph (20 km/h)
is reached. When this happens, a pumping noise can be heard.
If an individ ual w heel beg ins to rotate too slow ly in relat ion to vehicle
speed and tends to lock, t he ABS automat ic al ly reduces brake pres­
sure to prevent t hat wheel from locking .
Thi s automatic adjustment process w ill cause a
slight vibrat ion of
t he bra ke ped al and some noises to aler t you th at vehicle s peed mus t
be adapted to existing road and traff ic conditions.
& WARNING
Although the ABS is very effective , always remember that braking
capability i s limited by tire traction . Always adjust your driving
speed acco rding to the road and traffic condition s. Do not let the
extra safety afforded by the ABS tempt you into taking extra risk s.
T he ABS cannot overcome the laws of physics .
Controls and equip­ ment Safety first Vehicle operation
(I] Tips
•
If ABS is no t fun ct io ni ng prope rly, a wa rning light will come on .
See =>
page 16.
• If a fault occurs in the A BS, the EDL is also not functioning . This is
indicated by t he ABS warn ing light .•
Brake assist
Brake assist is designed to achieve the optimum braking
effect.
Bra ke ass ist helps to i ncrease the effe ctive br aking power and thus to
achieve a shorte r stopping distance . If the d river presses the brake
peda l very quickly, brake assist automatically boosts the bra king
force to the max imum level, up to the po int whe re the anti-lock b rake
function (ABS) intervenes to stop t he wheels from locki ng . You
should then keep the br ake peda l pressed unti l the ve hicle has braked
to the required speed . Brake ass ist switches itself off as soon as you
re le ase the br ake pedal.
& WARNING
Please remember that the accident risk always increases if you
drive too fast , especially in corners or on a slippery road , or if you
follow the vehicle ahead of you too clo sely. Increased ri sk of an
accident cannot be compensated for even by brake assist , so
alway s maintain a safe speed. •
Vehicle care Do-it-yourself service Technical data

Trailer towing
Driving with a trailer
General information
Your Audi was designed primarily for passenger transpor ­
tation.
If yo u plan to tow a t rai ler, p lease rem emb er that the add itiona l load
wi ll affect durab ility, economy and performance.
T railer tow ing not on ly p laces mo re s tress on the vehicle, it a lso calls
for more concentrat ion from the driver.
For this reason, a lways follow the ope rating and dr iv ing instr uctions
prov ided and use common sense .
Technical requirements
Trailer hitch
Use a weight-carrying hitch conforming to the gross trailer weig ht.
Th e hitch mus t be suitable for yo ur vehicle a nd tra ile r and mus t be
mounted secure ly on the vehicle's chassis at a
technically sound l oca­
t ion. Use only a trailer hitch wi th a remov ab le b all m ount. Alw ays
check w ith the tra iler hitch manufacturer to make sure that you are
using t he cor re ct hi tch.
Do not use a bumper hitch.
The h itch must be installed in such a way t hat it does not interfere
w ith the impa ct-absorbing b umper system. No mod ifi cat ions sho uld
be made to the vehicle exhaust and brake systems. From time to
ti me, chec k tha t all hitc h mou ntin g bol ts rem ain secure ly f aste n ed.
When you a re not tow ing a tra iler, remove the tra iler hitch ba ll
mount. This prevents the hitc h from caus ing damage should yo ur
vehicle be struck from behind=> &.
Controls and equip­
ment Safety first Vehicle operation
Trailer brakes
If your trailer is eq
uipped with a braking system, check to be s ure that
i t confo rm s to all regula tions.
The tra iler hydraulic brake system must not be directly connected to
the vehicle's hydraulic brake system=>& .
Safety chains
Alw ays use safety chains be twee n your vehicle and the trai ler.
Trailer lights
Tr ailer l ights m ust meet all reg ulat io ns. Be su re to check with your
author ized Audi deale r for correct wir ing, switches, and re lays.
Mirrors
If you are unab le to see the traffic behind you us ing the regular
outside m irro rs, then you
must install extended m irro rs. It is impor­
tant that yo u
always have clear vision to the rear.
& WARNING
• If a trailer has electrical b rake s please note that these brakes
are not activated by the factory-fitted control unit -ri sk of acci­
dent!
• After removing the trailer hitch , do not store it in your vehicle.
In case of sudden braking, the hitch could fly fo rward and injure
you or your passengers. •
Operating instructions
Maximum trailer we ight
A trailer for your vehicle is limited to a typical class 1 or class 2 trailer . .,.
Vehicle care Do-it-yourself service Technical data

Observe speed limits. In some areas, speeds for vehicles towing
t railers are lowe r than for regular veh icles.
Always apply brakes early. When dr iv ing downh ill, sh ift in to a lower
gear to use the engine braking effect to slow the vehicle. Use of the
brakes alone can cause them to overheat and fail.
Coolant temperature
The coolant temperature gauge~ page 8 must be observed care­
fully. If the needle moves close to the upper end of the scale, reduce
speed immediately and/or turn off the air conditione r.
If the coolant temperature warning light in the instrument cluster
star ts flashing
-t- , pull off the road, stop and let the engine idle for
about two minutes to prevent heat bu ild-up.
& WARNING
Anyone not properly restrained in a moving vehicle is at a much
greater risk in an accident. Never let anyone ride in your car who is
not properly wearing the restraints provided by Audi. u
Trailer towing tips
Important to know
------------
Your vehicle handles differently when tow ing a tra iler because of the
additiona l weight and different weight distribution. Safety, perfor ­
mance and economy will greatly depend on how carefu lly you load
your trailer and operate your rig .
Before you actua lly tow your trailer, practice turning, stopping and
backing up in an area away from traffic. Keep pract icing until you have
become completely familiar with the way your vehicle-t railer combi­
nation behaves and responds.
Controls and equip­
ment Safety first Vehicle operation
Backing up
is d iff icult and requ ires practice . Backing up with a trailer
generally requires steering action opposite to that when backing up
your vehicle without a trailer.
Maintain a greater distance between your vehicle and the one in front
of you. You will need more room to stop . To compensate fo r the
trailer, you will need a larger than norma l turning radius.
When passing, remember that you cannot accelerate as fast as you
normally would because of the added load. Make sure you have
enough room to pass. After passing, allow plenty of room for you r
trailer before changing lanes again.
Avoid jerky starts, sharp turns or rapid lane changes .
[I) Tips
• Do not tow a trai ler during the break-in per iod of your vehicle.
• If you tow a tra iler, your Audi may requi re more frequent mainte­
nance due to the extra toad~
page 343. •
Parking on a slope
Do not park on a slope with a trailer. If it cannot be
avoided, do so only after doing the following:
When parking:
-Apply the foot brake.
- Have someone place chocks under both the vehicle and the
trailer wheels.
- With chocks in place, slowly release the brakes until the
wheel chocks absorb the load.
- Turn the wheels towards the curb.
- Apply the parking brake .
- Move the se lector lever to
P.
Vehicle care Do-it-yourself service Technical data