sensor AUDI A6 2015 Owner's Manual

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-Always make sure that there is nothing
on the front passenger seat that will
cause the capacitive passenger detection
system in the seat to s ignal to the A irbag
System that the seat is occupied by a person when it is not, or to signal that it
is occupied by someone who is heavier
than the person actu ally s itting on t he
sea t. The presence of additiona l objects
cou ld cause the passenger front airbag
to be t urned on when it sho uld be off, or
cou ld cause the airbag to work in a way
that is different from the way it wou ld
have worked without the object on the
seat .
- Make sure that the
PASSENGER AIR BAG
OFF
light comes o n and stays on all the
t ime whenever the ignition is switc hed
on.
Advanced Airbag System components
The front passenger seat in your vehicle has a
l ot of very important parts of the Advanced
Ai rbag System in it. These parts incl ude the
capacitive passenger detect ion system, wir ­
i n g, brackets, and more . The control unit
monitors the system o n the front passenger
seat when the ign ition is switched on and
turns the airbag indicator light on when a
malfunct ion in the one of the system compo­
nents is detected ¢
page 158 . Because the
fro nt passenger seat contains important pa rts
of the Advanced Airbag System, you must
t ake care to p reven t it from being damaged.
D amage to the seat may preven t the Ad­
vanced A irbag System for the front passenger
seat from doing its job in a crash .
The front Advanced Airbag System
consists of the following:
-Crash sensors in the fro nt o f the veh icle that
measure vehicle acceleration/dece leration
to provide information to the Advanced Air­
bag System about the severity of the crash .
- An electronic co ntrol unit, with integrated
c rash sensors for front and side impacts .
The cont ro l unit "decides" whether to fire
A irbag system 153
the front a irbags based on the in format ion
received from the crash sensors. The contro l
un it also "decides" whether the sa fety be lt
pretens ioners sho uld be activated .
- An Advanced Airbag with gas generator and
contro l valve for the driver ins ide the steer­
ing wheel hub.
- An Advanced A irbag w ith gas gene rator and
cont ro l valve inside the instrument pane l for
the front passenger.
- A capacitive passenger detection system un­
derneath the front passenger seat cover.
This system measures the electrical capac i­
tance of the perso n in the seat. The informa­
tion registered is se nt cont inuous ly to the
el ectr onic contro l un it to regu late d eploy­
m ent of the front Advan ced A irbag on the
p assenger side .
- An airbag monitoring system and ind icator
light in the instr ument cluster ¢
page 157 .
-A sensor in each front seat registers the dis­
t ance be twee n the respec tive seat a nd the
s teer ing whee l or inst rumen t pa nel. The i n­
forma tion regis tered is sent cont inuo usly to
the electronic cont ro l unit to regulate de­
p loyment of the front Adv a need Airbags.
- The
PASSENGER AIR BAG OFF light comes
on and stays on in the center of the instr u­
ment panel ¢
page 158, fig . 160 and tells
you when the front Advanced Airbag on the passenger side has been turned off.
- A sensor in the safety be lt latch for the driv­
e r and for the front seat passenger that
senses whether that safe ty belt is latched or
not and transmits this information to the
elect ronic control un it .
.&_ WARNING
D amage to the front passe ng er seat ca n
p revent the front air bag from wor king
p roperly.
- I mp roper repa ir or d isassembly of the
fro nt passenge r and dr iver sea t will pre­
vent the Advanced Airbag System from
functioning p roperly.
- Repair s to t he fron t passenge r seat m ust
be pe rformed by qualified an d properly
-
trained workshop person ne l. 111>
•
•

162 Airbag system
www .dtsc.ca.gov/hazardouswaste/per ­
chlorate. When the vehicle or parts of the
restraint system including airbag modules
and safety belts wit h pretens ioners are
scrapped, all applicable laws and regula­
tions must be observed. Your authorized
Aud i dea ler is familiar wit h these requ ire­
ments and we recommend that you have
your dea le r perfo rm this se rv ice for you.
Other things that can affect Advanced
Airbag performance
Changing the vehicle's suspension system can
change the way that the Advanced Airbag Sys­
tem performs in a crash. For example, using
tire-r im combinations not approved by Aud i,
lowering the vehicle, changing the stiffness of
the suspension, including the springs, suspen­
sion st ruts, shock absorbers etc. can change
the forces that are measured by the a irbag
sensors and se nt to the electron ic control
un it. Some suspension changes can, for exam­
p le, increase the force levels meas ured by the
sensors and make the airbag system deploy in
crashes in which it would not deploy if the
changes had not been made. Other kinds of
changes may reduce the force levels meas­ ured by the sensors and prevent the a irbag
from deploying when it should.
A WARNING
Changing the vehicle's suspension includ­
ing use of unapproved tire -rim combina­
tions can change Advan ced A irbag per­
formance and increase the risk of serio us
personal in jury in a crash.
- Never install suspension components
that do not have the same performance character istics as the components origi­
nally installed on your vehicle.
- Never use tire-rim combinatio ns that
have not been approved by A udi.
Knee airbags
Description of knee airbags
Applies to vehicles: with knee airbags
The knee airbag system can provide supple­
mental protection to properly restrained
front seat occupants.
F ig . 1 61 Driver's knee airbag
The driver knee airbag is in the ins trumen t
pane l underneath t he steering wheel
¢ fig. 161, the airbag for the passenger is at
about the same height in the instrument pan­
el underneat h the glove compartment.
T he knee airbag offe rs additional p rotection
to the driver 's and passenger's knees and up­
per and lower th igh areas and supplements
the protection provided by the safety belts.
If t he front airbags dep loy , the knee ai rbags
also dep loy in frontal coll isions when the de­
ployment threshold stored in the contro l unit
is met
<=> page 155, More important things to
know about front airbags.
In addition to their norma l safety function,
safety belts help keep the dr iver or front pas­
senger in position in a fronta l collision so that
the a irbags can provide supplemental protec­
t ion .
The airbag system is not a substit ute for your
safety belt. Rather, it is part of the overa ll oc­
cupant restra int system in your vehicle. Al­
ways remember that the a irbag system can
o nly help to protect you if you are weari ng
your safety belt and wea ring i t properly. This
is why you should always wear your safety
belt, not just beca use the law requi res you to
do so
r::!;>page 136, General notes . ..,.

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caused by airbags when they inflate, particu­
l arly when the occupant sitting next to it is
not seated properly. The s ide a irbag for the
front passenger seat can be used with proper ­
ly installed chi ld res traints. Please be sure to
read the important information and warnings
whenever us ing a child restraint in a veh icle :
Safety belts
c::;, page 136, A irbag system
c::;, page 14 5, Child safety ~ page 171.
The side airbag system basically con sists of:
- the e lectronic control module and external
s ide impact sensors
- the two airbags located in the sides of the
front backrests and the two airbags* located
in the rear backrest
- the airbag warning light in the instrument
cluster.
The airbag system is monito red elect ron ica lly
to make certain that it is functioning properly
at all times. Each time you switch on the igni­
tion, the airbag system indicator light will
come on for a few seconds (self diagnostics) .
T he side airbag system supplements the safe­
ty belts and can help to reduce the risk of in ­
jury to the driver's, front and rear passenger's upper torso on t he side of the vehicle that is
struck in a side collision . The airbag deploys
only in s ide impac ts and on ly when the veh icle
acceleration registered by the control u nit is
hi gh enough . If this rate is below the refer­
e nce va lue progr ammed i nto the con trol un it,
the side airbags will not be triggered, even
though the ca r may be badly damaged as a re­
sult of the collision . It is not possible to de­
f ine an a irbag trigger ing range that will cover
eve ry possible angle of impact, since the cir­
cumstances will vary considerably between
one co llision and another . Important facto rs
in clude, for examp le, the natu re (hard o r soft)
of the impacting objec t, the ang le of impact ,
ve hicl e speed, etc. ~
page 1 66, Impor tan t
safety instructions on the side airbag sy stem.
Aside from the ir no rmal safety function, safe­
ty belts wor k to he lp keep the d river or front
passenger in posi tion in the event of a side
Airbag system 165
collision so that the side airbags can provide
protection.
T he airbag system is
not a substi tute fo r your
s af ety belt . Ra ther, it is part o f the over all oc­
cupant restra int system in you r vehicle . A l­
ways remember that the side airbag system
can on ly help to protect yo u if you are wearing
your safety be lt and wearing it proper ly. This
is another reason why you should always wear
your safety be lts, not just because the law re­
quires you to do so c::;,
page 136, General
notes.
It is important to remember that wh ile the
suppleme nta l side airbag system is desig ned
to r educe the likelihood of ser ious injuries,
othe r injur ies, for exampl e, swelling, bru is ing ,
friction bur ns and m ino r abrasions can a lso be
associ ated w ith dep loye d side airbags. Re­
member too, si de a irbags w ill dep loy o nly
once an d only in ce rtain kinds of accidents -
yo ur safety be lts a re a lways there to offer p ro ­
tection .
Vehicle damage, repair costs o r even the lack
of ve hicle damage are not necessarily a n indi ­
cation of ove r-sensitive or failed airbag activa­
tion. In some coll is ions, both front and side
a irbags may inflate. Remember too, that air­
bags will deploy only once a nd only in certain
ki nds of col lisions - you r safety belts a re a l­
ways t he re to offe r protection in those acc i­
dents i n which a irbags are not supposed to
deploy or when they have a lready deployed .
The side airbag system will not deploy:
-when the ignit io n is switched off
- in side co llisions whe n the acceleration
meas ured by t he sensor is too low
- in front-end collisions
- in rear -end co llisions
- in rollove rs .
In some types of accidents the front airbags,
s ide cu rtain airbags and s ide a irbags may be
t rigge red together. .,,. •
•

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-Never use additional seat cushions that
cover the areas where the side airbags
deploy.
- Damage to the original seat covers or
to the seam in the area of the side air­ bag module must always be repaired
immediately by an authorized Audi
dealer .
- Objects between you and the airbag can
increase the risk of injury in an acc ident
by interfering with the way the airbag
unfolds or by be ing pushed into you as
the airbag inflates.
- Never p lace or attach accessories or
other objects (such as cup holders., tel­
ephone brackets, or even large, bulky
objects) on the doors, over or near the
area marked "AIRBAG" on the seat
backrests .
- Such objects and accessories can be­ come dangerous projectiles and cause
injury when the supplemental s ide air­
bag deploys.
- Never carry any objects or pets in the
deployment space between them and
the airbags or allow children or other
passengers to travel in this position .
- Always use the built-in coat hooks only
for lightwe ight clothing. Never leave any
heavy or sharp-edged objects in the
pockets that may interfere with side air ­
bag dep loyment and can cause personal
injury in an accident.
- Always prevent the side airbags from be­
ing damaged by heavy objects knocking
against or hitting the sides of the seat­
backs.
- The airbag system can only be triggered once. If the airbag has been triggered,
the system must be replaced by an au­
thorized Aud i dealership.
- Damage (cracks, deep scratches etc.) to
the original seat covers or to the seam in
the area of the side airbag module must
always be repaired immediately by an au­
thorized Audi dealer.
Airbag system 167
-If children are seated improperly, their
risk of injury increases in the case of an
accident
Q page 171, Child Safety.
- Never attempt to modify any compo­
nents of the airbag system in any way .
- In a side coll ision, side airbags will not
function properly if sensors cannot cor­
rectly measure increasing air pressure in­
side the doors when air escapes through
larger, unclosed openings in the door
panel.
- Never drive with interior door trim pan­
els removed.
- Never drive when parts have been re ­
moved from the inside door panel and
the openings they leave have not been
properly closed.
- Never drive when loudspeakers in the
doors have been removed unless the
speaker holes have been properly
closed.
- Always make certain that openings are covered or filled if additional speakers
or other equipment is installed in the
inside door panels.
- Always have work on the doors done by
an authorized Audi dealer or qualified
workshop .
Side curtain airbags
Description of side curtain a irbags
The side curtain airbag system can provide
supplemental protection to properly restrain­
ed occupants .
Fig. 165 Side curta in air bags, driver's s ide: s ide curta in
airbag location ....

168 Airbag sys tem
The side curtain airbags are located on both
sides of the interior above the front and rear
side windows ¢
fig. 165. They are ident ified
by the word "AIRBAG" on the windshie ld
frame and the center roof p illar.
The side curtain airbags contain features that provide e jection m itigat ion to he lp prevent ve­
h icle occupants or parts of their bodies from
be ing completely or partially ejected from the
ve hicle interior in certain side impacts and ve ­
h icle rollovers.
The s ide curtain airbag system supp lements
the safety belts and can help to reduce the risk of injury for occupants' heads and upper
torso. The s ide curtain airbag inflates in side
impacts and only when the vehicle acce lera­
tion registered by the control u nit is high
enough. If t his rate is below the reference val­
ue programmed into the control unit, the s ide
curtain ai rbag will not be triggered, even
though the car may be badly damaged as a re ­
sult of the collision. It is not possible to de­
f ine an a irbag tr igger ing range that will cover
every possible angle of impact, since the cir­
cumstances wi ll vary considerably between
one coll ision and another. Important factors
include, for examp le, the natu re (hard o r soft)
of the impacting object, the ang le of impact ,
ve hicl e speed, etc. ¢
page 169, How side cur­
tain airbags work .
Aside from their normal safety function, safe­
ty belts wor k to he lp keep t he d river or front
passenger in posi tion in the event of a co ll i­
sion so tha t the side curta in ai rbags can pro­
vide protection.
The airbag system is not a s ubst itute for your
safety be lt. R athe r, it is p art of the overall oc ­
cupant restraint system in your ve hicle . Al­
ways remember that the airbag system can
on Ly help to protect you if you are wearing
your safety belt and wear ing it properly. Th is
is another reason w hy you should always wear
your safety belts, not just because the law re­ qu ires you to do so¢
page 136, General
notes .
It is important to remembe r that wh ile the
side curtain airbag system is designed to help
reduce the likelihood of ser ious injuries, other
injur ies, for example, swelling, br uising, fric­
t ion burns and minor abras ions can also be as­
sociated w ith these airbags upo n deployment .
Remember too, these airbags will deploy only
once a nd on ly in ce rtain kinds of accide nts -
yo ur safety belts a re always the re to offer p ro­
tection .
The side curtain airbag system basic ally
consists of:
- The e lectro nic co ntrol module and external
side impa ct sensors
- The side curtain a irbags above the front and
rea r side windows wit h ejection mitigation
fe atu res
- The a irbag i ndicator lig ht in the inst rument
pa nel
The airbag system is mon itored electronically
to make ce rtain it is functioning prope rly at all
t imes. Each time you sw itch on the ign ition,
t h e airbag system ind icator light will come on
f o r a few seconds (sel f diagnos tics) .
The side curtain airbag is not activated:
-if the ignition is sw itched off,
- in side co llisions whe n the acceleration
measu red by the sensor is too low,
- in rear-end collisions.
A WARNING
-Safety belts and the airbag system will
only provide protection when occupants
are in the proper seating posi tion
¢ page 52, General re commendations.
- If the ai rbag ind icator light ¢ page 19
comes when the veh icle is being used,
have the system inspe cted immedia tely
by your au thori zed A udi deale r.
It is pos­
sible tha t the airbag will infla te when it
is not supposed to, or will not inflate
when it should.

190 Audi pre sense
Audi pre sense
Preventative passenger
protection
A pp lies to veh icles: with Audi pre se nse
Audi pre sense can initiate steps to help pro­
tect vehicle occupants in certain situations.
The functions described depend on equ ipment
installed in your vehicle:
Audi pre sense basic*
The following functions can be triggered in
certain driving situations:
- Tightening of the safety belts (for example,
during heavy braking) : the front safety belts
have reversible belt pretensioners. If a colli­
sion does not occur, the safety belts loosen
slightly and are ready to be tightened again.
- Closing the windows and the sunroof*: the
windows and the sunroof* close leaving a
small open gap.
Audi pre sense basic functions can be trig­
gered at speeds above 20 mph (30 km/h).
Vehicles with Aud i drive select*: the deploy­
ment time is adapted in
Dynamic mode.
Audi pre sense front (vehicles with
adaptive cruise control*)
Audi pre sense front includes the functions in
Audi pre sense basic. In addition, within the
limits of the system, the likelihood of a colli ­
sion with the vehicle immediately ahead is al­
so calculated . If the system senses an immi­
nent collision the following functions can be
tr iggered :
- Braking guard c::>poge
90
-Tightening the safety be lts
- Closing the windows and the sunroof* (leav -
ing a small open gap)
Audi pre sense rear (vehicles with Audi
side assist*)
Audi pre sense rear includes the functions in
Audi pre sense basic. In addition, the likeli­
hood of a rear-end collision with the vehicle
coming from behind is also calcu lated.
If the risk
of a co llision is detected, the following
functions can be triggered:
- Tig htening the safety belts
- Closing the windows and the sunroof* (leav-
ing a small open gap)
Audi pre sense plus*
Audi pre sense plus includes the functions in
Audi pre sense front and Audi pre sense rear.
Error message
Audi pre sense: not available
Preventative passenger protection is not avail­
able. See your authorized Audi dealer immedi­
ately to have the malfunction corrected.
_& WARNING
-=
Audi pre sense cannot overcome the laws
of physics. It cannot prevent a collision. Do
not let the increased safety provided
tempt you to take risks. This will increase
the r isk of a collis ion and serious personal
in juries .
- The sensors cannot always detect all ob­
jects. This increases the risk of a colli­
s10n.
-Aud i pre sense does not detect people or
an im als or objects that are crossing the
veh icle's path c::> page
84.
-The radar sensor's vis ion can be reduced
by heavy rain, ice, snow, heavy road sp ray
and reflections from guard rails, tunnel
entrances, etc. These and similar condi­
tions can prevent vehicles from being ac ­
curately detected and in some cases they
may not be detected at all.
(D Note
The sensors can be displaced by impacts or
damage to the bumper, wheel housing and
underbody. This can affect the function of
the Audi pre sense system. Have your au­
thorized Audi dealer check to make sure
that the system is working properly.

198 Intelligent technology
Winter tires
When dr iv ing in the w inter, your ve hicl e w ith
a ll-whee l drive has an advantage,
even with
regular ti res . In winter road conditions it may
be advisable to mount winter tires (o r all-sea­
son t ires) for improved driveability and brak­
ing: these tires must be mounted on
all four
whe els .
See also c:> page 264, Winter tires.
Tire chains
Where tire cha ins are mandatory on certa in
roads, th is normally a lso applies to vehicles
with a ll-wheel drive
c:> page 265, Snow
chains.
Replacing wheel s/tir es
Vehicles w ith all-wheel drive must a lways
have tires of the same size . Also avoid tires
with d ifferent tread depths. For details see
page
c:> page 257, New tires and replacing
tires and wheels.
Off-Road driv ing?
Your Audi does not have enough ground clear ­
ance to be used as an off-road ve hicle . It is
therefore best to avoid rough tracks and un ­
even terrain as much as possible. Also refer to
c:> page 201.
A WARNING
Always adjust your driving to road and traf­
fic conditions . Do not let the ext ra safety
afforded by all-wheel dr ive tempt you into
taking extra risks.
- Alt hough the all-whee l dr ive is
very ef­
fec tive, a lways remember that b raking
c ap aci ty is limited by tire traction. Yo u
sho uld the re fo re not dr ive at excessive
speeds on icy or slippery road su rfaces.
- O n wet road s urfa ces, be c areful not to
drive too fast because the front wheels
cou ld begin to sli de on top of the water
(aq uaplaning) . If this sho uld occ ur, you
will have no warn ing from a sudden in­
crease in engine speed as with a front­
w heel d rive vehicle. A lways drive at
speeds w hich are suited to the road con­
ditions -risk of c rash.
Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting the engine.
If a vehicle with a conventiona l energy system
is not driven for a long period of t ime, t he bat­
te ry is discharged by idling current consume rs
(e .g. immobili ze r). In certa in circumstan ces it
ca n res ult in the re be ing insu ffic ien t energy
available to start the eng ine.
Intelligent energy management in your vehi­
cl e ha ndles the dist rib ution o f electr ica l ene r­
gy. Start ing abili ty is m arke dly improved and
the life of the battery is extended .
Bas ica lly, energy management consists of
battery diagnosis , idling current manage­
ment
and dynamic energy management .
Battery diagnosis
Battery diagnosis continuously determines
the state of the batte ry. Sensors determine
batte ry voltage, batt ery cu rr e nt and battery
tempe ratu re. This de termines the cur ren t
sta te o f cha rge and t he power o f th e battery.
Idling current management
Idli ng cur rent management reduces energy
consumpt ion while the vehicle is standing .
With the ig nition sw itched off, it controls the
energy supp ly to the variou s ele ctri ca l compo ­
nen ts. Da ta from ba ttery d iagnos is is co nsid­
ered.
Depend ing on the batte ry's state of cha rge,
i ndivid ual con sume rs are g radually turned off
to prevent excessive discharge o f the battery
and th us main tain starting capabi lity.
Dynamic energy management
While the vehicle is being d riven, dynamic en­
ergy ma nagement distr ib utes the energy ge n­
era ted a ccord ing to t he needs of the indivi du-
al components .
It regula tes consumption, so
t h at more electrical energy is not being used ..,.

210 Vehicle care and cleaning
A WARNING
-Only wash the vehicle when the ignition
is off and follow the instructions from
the car wash operator to reduce the risk
of accidents .
- To reduce the risk of cuts, protect your­
self from sharp metal components when
washing the underbody or the inside of
the wheel housings.
- After washing the vehicle, the braking ef­
fect may be delayed due to moisture on
the brake rotors or ice in the winter. The
brakes must be dried first with a few
careful brake applications.
(!;) Note
- If you wash the vehicle in an automatic
car wash, you must retract the rear spoil­
er if necessary, and fold the exterior mir­
rors in to reduce the risk of damage.
Power folding exterior mirrors* must on­
ly be folded in and out using the power
folding function.
- To prevent paint damage, do not wash
the vehicle in direct sunlight. -
To reduce the risk of damage to the sur­
face, do not use insect removing spong­
es, kitchen sponges or similar items.
- Matte finish painted vehicle compo­
nents:
- To reduce the risk of damage to the
surface, do not use polishing agents or
hard wax.
- Never use car wash cycles that apply
protective wax.
It can destroy the
matte finish effect.
- Do not place any stickers or magnetic
signs on vehicle parts painted with matte finish paint. The paint could be
damaged when the stickers or magnets
are removed.
@ For the sake of the environment
Only wash the vehicle in facilities specially
designed for that purpose. This will reduce
the risk of dirty water contaminated with
oil from entering the sewer system.
Cleaning and care information
When cleaning and caring for individual vehi­
cle components, refer to the following table.
The information contained there is simply rec­
ommendations . For questions or for compo- nents that are not listed, refer to an author­
ized
Audi dealer or a qualified workshop. Also
follow the information found in¢,& .
Cleaning exterior
Component Situation Solution
Wiper blades
Dirty ¢ page 49, Cleaning windshield wiper blades
Headlights/ Dirty Soft sponge with a mild soap solutiona>
tail lights
Sensors/
Dirty Sensors: soft cloth with a solvent-free cleaning product
camera lenses Camera lenses: soft cloth with an alcohol-free cleaning
solution
Snow/ice Hand brush/solvent-free de-icing spray
Wheels Road salt Water
Brake dust Acid-free special cleaning solution
Exhaust tail Road salt Water, cleaning solution suitable for stainless steel,
if
pipes necessary

212 Vehicle care and cleaning
Component Situation Solution
T ex tile s,
Stains adhering to Vacuum cleaner
Vin yl, the surface
A lcan ta ra Water -based stains Absorbent cloth and mild soap solutiona>
such as coffee, tea,
blood, etc.
O il-based stains Apply a mild soap solutiona>, blot away the d issolved oil
such as oil, make- or dye, treat afterward w ith water, if necessary
up, etc.
Special stains such Special stain remover, blot with absorbent material,
as ballpoint pen, treat afterward with mild soap solutiona>, if necessary
na il polish, latex
pa int, shoe po lish,
etc.
N atu ral leather Fresh stains Cotton cloth with a mild soap solutiona>
Water-based stains Fresh stains: absorbent cloth
such as coffee, tea, Dr ied stains: sta in remover suitable for leather
blood, etc.
Oi l-based stains Fresh stains: absorbent cloth and sta in remover suitable
such as oil, make- for leather
up, etc. dried stains: Oil cleaning spray
Special stains such Stain remover suitable for leather
as ballpo int pen,
na il polish, latex
pa int, shoe polish,
etc.
Care Regular
ly apply condit ioning c ream that protec ts from
light a nd penetrates into the materia l. Use specially-col-
ored conditioning cream, if necessary.
Carbon part s Dirty Clean tlhe same way as plastic parts
a) Mi ld soap so lut ion : maximum two tablespoons neut ra l soap in 1 quart (I lite r) of water
& WARNING
The windshie ld may not be treated with
water -repe lling windshield coating agents .
Unfavorab le conditions such as wetness,
darkness, or low sun can result in in­
creased glare. W iper blade chatter is a lso
possible .
(V Note
-Headlights /tail lights
- Never clean headlights or tail lights
w it h a dry cloth or sponge. -
Do not use any cleaning product that
contains alcohol, because they could
cause cracks to form.
-Wheels
- Never use any paint polish or other
abrasive mater ials.
- Damage to the protective layer on the
rims such as stone chips or scratc hes
must be repa ired immediately.
- Sensor s/camera len ses
- Never use warm or hot water to re-
move snow or ice from the camera
le ns. This could cause th e lens to crack . ""

M N
0 <.J 'SI: ,...., \!) 1.1"1 ,...., 1.1"1 ,....,
Before you check anything in the engine com­
partment,
al ways r ead and heed all W ARN­
ING S r=;, A in Working in the engine compart­
ment on page 222.
.. Park your vehicle on a level surface.
.. Switch
off the ignition .
.. Read the eng ine coolant leve l from the cool­
ant expansion tank¢
fig. 191, ¢ page 224,
fig. 188.
With a cold engine, the coolant
level should be between the "min" and
"max" markings. When the engine is warm,
the leve l may be slightly above the "max"
mark ing .
The location of the coolant expans ion tank
can be seen in the engine compartment illus­
tration ¢
page 224.
To obta in an accurate read ing, the engine
must be switched
off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor.
When the coo lant level is too low, the warning
light in the Auto-Check System
¢ page 16 will
illum inate until yo u add coolant and the level
has been restored to normal. Even though
there is an electric coo lant level sensor, we
still recommend you check the coolant leve l
from time to time .
Coolant loss
Coolant loss may indicate a lea k in the cooling
system. In the event of coolant loss, the cool­
ing system should be inspected immediately
by your authorized Audi dealer . It is not
enough merely to add coola nt.
In a
sealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheat ing .
A WARNING
The coo ling system is unde r pressure and
c an get ve ry ho t. Reduce the risk of s cald­
ing from h ot coolan t by followi ng these
steps .
- T urn
off the engine and allow it to coo l
down.
Checkin g and fillin g 229
-Protect your face, hands and arms from
escaping flu id and steam by covering the
cap with a large, th ick rag.
- Turn the cap slowly and very carefully in
a counter-clockwise d irect ion while ap­
plying lig ht, downward pressure on the
top of the cap .
- To avo id being burned, do not sp ill anti­
freeze or coolant on the exhaust system
or hot engine parts. Under certa in cond i­
tions, th e ethylene glycol in engine coo l­
ant can catch fire.
(D Note
Do not add any type of radiator leak sea l­
ant to your ve hicle's engine coolant. Add-
i ng radiator repa ir flui d may adverse ly af­
fe ct the funct ion a nd pe rfo rma nce of you r
co oling system and could re sult in damage
not covered by your New Vehicle Limi ted
War ranty.
Adding coolant
Be very careful when adding engine coolant.
Before you ch eck anyth ing in the eng ine com­
partment,
alway s re ad and heed all WARN­
INGS ¢ A in Working in the engine compar t­
ment on page 222.
.. Requirement: The re must be a residua l
amount of coolan t in the expansion ta nk
¢(D .
.. Tu rn off the engine.
.. Let the engine cool down.
.. Place a thick rag ove r th e coo lant expansion
tank
¢ page 228, fig . 191 and carefully
twist the cap counte r-clockwise ¢.&, .
.. Add coo lant m ixed in the correct ratio
¢
page 228, Coolant up to the MAX mark ­
ing .
.. Make s ure that the flu id leve l remains sta-
b le. Add more coo lant if ne cessary.
.. Twis t the cap o n again
t ightly.
Replacement engine coo lant must confo rm to
exact spec ificat ions
r=;, page 228, Coolant. ..,.
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