2015 AUDI Q3 brake

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Checking and filling Engine hood
Releasing and opening the engine hood
The engine hood is released from inside the
vehicle .
Fig. 1 43 Dr iver's side footwell: eng ine hood release
lever
F ig . 144 Re lease lever un der the engine hood
Make sure the wiper arms are not raised up
from the w indshield. Otherw ise the paint
could be damaged .
.. With the driver's door open, pu ll the lever
under the instrument panel in the direction
of the arrow
c> fig. 143.
.. Raise the hood slightly c> .&,
.. Press the rocker switch under the hood up­
ward
c> fig. 144 . This releases the catch .
.. Open the hood.
A WARNING
Hot engine coo lant can burn you.
- T o reduce the r is k of being burned, never
open the hood if you see or hear steam
or coolan t escaping from the engine
compartment. Wait until no steam or
coolant can be seen or heard be fore care­
fully opening t he hood.
Checkin g and fillin g 179
Closing the engine hood
.. Pull the hood down un til the pressure from
t he stru ts is reduced.
.. Let the hood
drop down and latch in p lace .
Do not try to push it shut; it may fail to en­
gage¢ .&,.
A WARNING
-
A hood that is not completely latched
could fly up and b lock your view while dr iv­
ing.
- When you close the engine hood , check it
to make sure the safety catch has proper­
ly engaged. The hood shou ld be flush
with the surround ing vehicle body parts.
- If you notice while dr iving that the hood
is not secured properly, stop at once and
close it.
Working in the engine compartment
Be especially careful whenever you work in
the engine compartment.
Whene ve r you must pe rform an y wo rk in the
eng ine compa rtment , for e xample check ing
and filling different fluids, there is a risk of
injury , burns and accidents. To prevent per­
so nal injury alway s observe th e foll owing
WARNINGS . Th e engin e compartm ent of an y
v e hicle i s a ha zardou s area
c> .&, .
A WARNING
To help avoid injury, be fore yo u check any­
thing under the hood:
- Tu rn off the engi ne .
- Remove the ignition key.
- Apply the parking brake .
- Move selector leve r of automatic trans-
miss ion to "P" (Park) .
- Always let the engine cool down. Hot
components w ill bur n skin on contact.
- To reduce the risk of being burned, never
open the hood if you see or hear steam
or coo la nt escaping from the eng ine
compa rtment. Wait unt il no steam or

180 Checking and filling
coolant can be seen or heard before
carefully opening the hood.
- Keep children away from the engine com­
partment.
- Never spill fluids on hot engine compo­
nents. They can cause a fire.
- Never touch the radiator fan. The auxili­ ary electric fan is temperature controlled
and can switch on suddenly.
- Never open the coolant reservoir cap
when the engine is still warm. The cool­
ant system is pressurized and hot cool­
ant could spray out .
- Protect your face, hands and arm from
steam or hot engine coolant by placing a
thick rag over the cap when you open the
coolant reservoir .
- Do not remove the engine cover under
any circumstances. This increases the
risk of burns.
- If work on the fuel system or the electri­
cal system is necessary:
- Always disconnect the battery .
- Never smoke or work near heaters or
open flames. Fluids in the engine com­
partment could start a fire.
- Keep an approved fire extinguisher im­
mediately available.
- To avoid electrical shock and personal in­
jury while the engine is running or being
started, never touch:
- Ignition cables
- Other components of the high voltage
electronic ignition system.
- If you must perform a check or repair
with the engine running:
- First, fully apply the parking brake,
move selector lever of automatic trans­
mission to "P" (Park) .
-Always use extreme caution to prevent
clothing, jewelry, or long hair from get- ting caught in the
radiator fan, V-belts
or other moving parts, or from contact­
ing hot parts. Tie back hair before
starting, and do not wear clothing that
will hang or droop into the engine .
- Minimize exposure to emission and
chemical hazards
c> A .
A WARNING
-California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain
or emit chemicals known to the State of
California to cause cancer and birth de­
fects and reproductive harm. In addition,
certain fluids contained in vehicles and
certain products of component wear con­
tain or emit chemicals known to the
State of California to cause cancer and
birth defects or other reproductive harm.
- Battery posts, terminals and related ac­
cessories contain lead and lead com­
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive harms. Wash hands after handling.
(D Note
When adding fluids, always make sure that
they are poured into the proper container
or filler opening, otherwise serious dam­
age to vehicle systems will occur.
@ For the sake of the environment
To detect leaks in time, inspect the vehicle
floor pan from underneath regularly. If
you see spots from oil or other vehicle flu­
ids, have your vehicle inspected by an au­
thorized Audi dealer.

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Checking and fillin g 181
Engine compartment
Engine compartment
These are the most important items that you can check.
Fig. 14 5 Typical layout for containers and engine oil filler cap
(D Coolant expansion tank (- L) . . . 186
@ Engine oil dipstick . . . . . . . . . . . 184
@ Eng ine oi l filler cap ('t::r.) . . . . . 184
@ Brake fl uid reservoir (0)) . . . . . 189
® Jump start point(+) under a cov-
er, ....................... 192, 228
@ Jump start point(-) with hex
head screw, . .. ..... ... .. .. . 192, 228
(J) Windshield washer conta iner
Cw) . . . . . . . . . . . . . . . . . . . . . . 193
The position of the engine o il filling hole
(item @) can differ depending on the engine
des ign .
A WARNING
Before yo u check anything in the engine
compartment, always read and heed all
WARN INGS
~ .& in Working in the engine
compartment on page 179.
-
Engine oil
Engine oil specifications
The engine in your Audi needs the right kind
of oil.
The eng ine in your Audi is a sophisticated
power p lant that was bu ilt to exacting specifi­
cations. This eng ine needs the right k ind of
engine oil that meets specifications regarding
quality and viscosity so that it can run
smooth ly and reliab ly. Choosing the rig ht o il
and changi ng oil within the t ime and mileage
in tervals printed in you r vehicle's Warranty
&
Maintenance booklet matters a lot more to ­
day than it did years ago . Audi has developed
a specia l quality standard for engine oil that
will help assure that your vehicle's engine w ill
get the lubr ication it needs for proper opera-
tion. .,..

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Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
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Fi g. 149 Eng ine compartment: Cover on the brake flu ­
id reservoir
Before you check anything in the engine com­
partment,
a lwa ys read and heed all WARN­
ING S c:> .&.. in Working in the engine compart­
ment on page 179 .
~ Read the brake fluid level from the brake
fluid reservoir
c:> fig. 149, <=> page 181,
fig . 145.
The brake flu id level must be be­
tween the "MIN" and "MAX" markings.
The brake fluid reservoir is located at the rear
partition of the engine compartment on the
left side <::;>
page 181 .
The fluid level may drop slightly after some
time due to the automatic adjustment of the
brake pads . This is not cause for alarm .
If the brake fluid level falls
considerably be­
low the "MIN" mark, the brake warning/indi­
cator light (USA models: ., Canada models:
• will come on
<::;> page 13. Do not continue
to operate the vehicle . The complete brake
system should be thorough ly checked by an
author ized Audi dealer or qua lified workshop
and the cause corrected.
If the brake fluid lev­
e l is too low, the brake warning/indicator ligh t
will illuminate . Contact an authorized A ud i
dealer
immediately.
@ Tips
The brake f luid reservoir is located under­
neath the cover .
Checking and fillin g 189
Changing brake fluid
Have the brake fluid changed by on experi­
enced technician.
Brake fluid absorbs moisture from the air. If
the water content in the brake fluid is too
high, corrosion in the brake system may result
after a period of time . The boiling point of the
brake flu id will also dec rease considerably and
decrease braking pe rformance.
Therefore, the brake fluid must be changed
ev ery two years. Always use new brake flu id
which conforms to Federal Motor Vehicle
Standard "F MVSS 116 DOT 4".
The brake fluid reservo ir can be d iff icult to
reach, the refore, we recommend that you
have the brake fluid changed by your author­
i zed
Audi d ealer. Your dealer has t he correct
tools, the right brake fl uid and t he know-how
to do this for you .
A WARNING -.
-Brake fluid is poisonous . It must be stor­
ed only in the closed original container
out of the reach of children!
- Brake failure can resu lt from o ld or inap­
propriate brake f luid. Observe these pre­
cautions:
- Use only brake fluid that meets SAE
spe cificat ion
J 1 7 03 and conforms to
Federa l Moto r Ve hicl e Standard 116.
Always check with yo ur authorized Audi
dealer to make sure yo u are using the
correct bra ke fluid. The correct type of
brake f luid is also indicated on the
brake f luid reservoir.
- The brake fluid must be new. Heavy use
of the brakes can cause a vapor lock if
the brake fluid is left in the system too
l ong . This can seriously affect the effi­
c iency of the brakes as well as your
safety. This cou ld resu lt in an accident.
(D Note
Brake fluid will damage the paint of your
vehicle .

190 Checking and filling
@ For the sake of the environment
Because of the problem of proper disposa l
of brake flu id as we ll as the special tools
req uired and the necessary expert ise, we
recommend that you have the b rake fluid
changed by your author ized Audi dealer.
Battery
General information
Unde r normal operating conditions, the bat ­
tery in your A udi does not need any mainte ­
nance. With
high outside temperatures or
long daily dr ives we recommend that you have
the elect ro lyte level checked by an authorized
Aud i dea ler o r qualified workshop . The elec­
trolyte leve l sho uld a lso be c hecked each t ime
the battery is c harged
c::> page 192.
H ave the battery checked when you take your
ve hicle in for service . Yo u are well adv ised to
replace a bat tery that is older tha n 5 yea rs .
W ith certa in types of a irbag deployment, t he
battery is d isconnected from the vehicle elec­
tr ica l system fo r safety reasons
c::> & in Re ­
pair, core and disposal of the airbags on
page 126.
Disconnecting the battery terminals
Some veh icle functions (power w indow regu­
lato rs, for example) are lost if the battery ter­
m inals a re discon nected. These functions have
to be re lea rned after the batte ry terminals a re
c onnec ted agai n. T o prevent this, the battery
should o nly be di sconnec ted from the vehicle
e lec trica l syste m when absolu tely necess ary
for repairs.
Vehicles not driven for long periods
I f yo u do not dr ive you r vehicle over a pe riod
of severa l days or weeks, elec trical co m po­
n en ts are gr adually cu t back o r swi tched off .
T his reduces energy cons ump tion and main ­
tains sta rting capab ility over a lon ger perio d
c::> page 159 .
Some o f the conven ien ce f unct ions m ay no t
ope rate, su ch as the in ter ior lights o r the power seat adjus
tment . The convenience
funct ions wi ll be available again when yo u
tu rn on the ign ition and sta rt t he engine .
Winter operation
During the w inte r mon th s, batt ery c apac ity
tends to dec rease as tempera tures drop . This
is beca use more power is a lso consumed w hile
starting, and the headlights, rear win dow de­
f ogger, etc., are used more often.
Avoid unnecessa ry powe r consumpt ion, pa r­
ticu lar ly in ci ty traffic o r when traveling only
sho rt distances . Let yo ur autho rized A udi
dealer check the capacity of the vehicle bat ­
tery before w inter sets in
<=:> page 192. A well
charged battery will not on ly prevent starting
problems when the weather is cold, but w ill
also last longer .
@ Tips
If your vehicle is left standing for seve ral
w eeks at extremely low temperatures, the
vehicle battery s hou ld be removed and
s tored w her e it w ill not freeze. This will
preve nt i t fr om be ing d amaged and having
t o be repla ced .
Working on the battery
Be especially careful when working on or near
the battery.
T he battery is loc ated in the luggage compar t­
ment under the floo r. B efo re you che ck any­
t hi ng in the luggage co mpartmen t,
read and
heed all WARNINGS
c::> .&_ .
Always heed t he safety warnings , when work­
i ng on the veh icle ba tte ry or the vehicle e le c­
t ric al sys tem to p reven t inju ry.
The following WARNINGS are very
important when working on the battery:
Always heed the following WARNING SYM ·
BOLS and safety precautions when working
on the battery .
®
Always wear eye protection .

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Tires and wheels
Tires
General notes
Tires may be the least appreciated and most
abused parts of a motor vehicle .
Tires may be the least appreciated and most
abused parts of a motor vehicle . Tires are,
however, one of the most important parts of a
vehicle, particularly considering the compara­
tively small patch of rubber on eac h tire that
assures that a ll- important contact between
you, you r vehicle and the road.
Ma intaining the correct tire pressure, mak ing
sure that your vehicle and its tires do not have
to carry mo re weight than they can safely han­
d le, avoiding damage from road hazards and
r eg ularly inspec ting t ires for damage i nclud­
ing cuts, slashes irreg ular wear and ove ra ll
condition are the most important things that
you can do to he lp avoid sudden tire failure in­
cluding tread separat ion and blowouts.
Avoiding damage If you have to d rive over a curb or similar ob­
stacle, drive very slow ly and as close as possi ­
b le at a right angle to the curb.
A lways keep chemicals includ ing grease, o il ,
gasoline and brake fluid off the t ires .
I nspect the t ires regularly for damage (cuts,
cracks or b listers, etc.). Remove any fo reign
bod ies embedde d in the treads.
Storing tires Mark tires when you remove them to indicate
the direction of rotation . T his ensures you to
be ab le to mount them correctly when you re­
i nstall them .
When removed, the whee ls or t ires should be
sto red in a cool, d ry and preferably dark place .
Store tires in a vertical pos ition if they are not
mounted on rims, in a horizontal pos it ion if
they are mounted on rims .
Tires an d wheel s 195
New tires
New tires h ave to be broken in ¢ & .
The tread depth of new t ires may vary, accord­
ing to the type a nd make of t ire and the tread
pa tte rn.
Hidden damage
Damage to tires and rims is ofte n not readily
visible . If you notice unusual v ib rat io n or the
vehicle p ulls to one s ide, th is may ind icate
that one of the t ires has been damaged . T he
ti res m ust be chec ked immed iate ly by an au­
t horized Audi dea le r or q ua lified wor kshop .
Unidirectional tires
A un idirectional tire can be identified by ar­
rows on the sidewa ll, that po int in the direc­
tion the t ire is designed to rotate. You mus t
f ol low the specified d irection o f rotation . T his
is necessary so that these tires can develop
their optimum characteristics regarding grip, road noise, wear and hydrop laning resistance.
For more information
¢page 223.
A WARNING
New tires or t ires that are o ld, worn or
damaged cannot provide maximum con­
trol and braking ability .
-
-New tires tend to be slippery and must
also be b roken-in. To reduce the risk of
losing control , a collision and serious
pe rsonal injuries, drive w it h special care
for the first 350 miles (560 km).
- Driving with worn or damaged tires can
lead to loss of control, sudden tire fail­
ure, including a blowout and sudden de­
fl ation, c ras hes and se riou s personal in­
juries . Have wo rn or damaged t ires re­
placed immediate ly.
- Ti res age even if they are no t being used
an d can fai l sudden ly, especially at hig h
spee ds. Tires that are more than 6 years
old can only be used in an emergency
and then w ith special care and at low
speed.
•
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196 Tire s and wheel s
-Never mount used tires on yo ur vehicle if
yo u are not sure of their "previous histo­
ry." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden t ire failure
and loss of vehicle control.
- If you notice unusual vibration or if the
vehicle pulls to one side when driving, al­
ways stop as soon as it is safe to do so
and check the wheels and tires for dam­
age.
(D Note
- Please note that summer and winter
tires are designed for the cond itions that
a re typ ica l in those seasons. Aud i recom-
Glossary of tire and loading terminology
Accessory weight
means t he comb ined we ight (in excess of
those sta ndard items wh ich may be rep lace d)
of automa tic transmission, power s teering ,
power brakes, power wi ndows, power seats,
radio, and heater, to the extent that thes e
items are availab le as factory-installed equip­
ment (whether ins talled or not) .
Aspect ratio
means the ratio o f the height to the width of
the tire in percent. Numbers of 55 or lower in ­
d icate a low sidewall for improved steer ing re ­
sponse and better overall handling on dry
pavement.
Bead
means t he pa rt of the tire that is made of
steel wires, wrapped or reinforced by ply cords
and that is shaped to fit the rim .
Bead separat ion
means a b reakdown of the bond between
components in the bead.
Cord
means the strands forming the plies in the
tire. mends using winter tires during the w
in ­
ter months. Low temperatures signifi­
cantly decrease the elastic ity o f summe r
tires, which affects traction and braking ability . If summer tires are used in very
co ld temperatures, cracks ca n form o n
the tread bars, resu lting in permanent
tire damage that can cause lo ud driving
noise and unbalanced tires. Aud i is no t
responsib le for this type of d amage .
- Burn ished , polished or chromed rims
must not be used in winter road condi ­
tions. The s urface of the rims does not
have s uff ic ient corrosion protection for
this and could be permanently damaged
by road sa lt o r similar substances .
Cold tire inflation pressure
means the t ire p ress ure recommended by the
vehicle m anufacture r fo r a tire o f a des ign ated
s ize that has not been d riven for more than a
coup le of miles (ki lometers) at low speeds in
the three hour period before the tire p ress ure
is measured or adjusted .
Curb weight
means the we ight of a motor ve hicl e w ith
standard equipment including the maximum
capac ity of fuel, oi l, and coolant, air condi­
tion ing and additional weig ht o f optiona l
equipment.
E x tra load tire
means a t ire design to operate at higher loads
and at higher inflation pressures than the cor ­
responding standa rd tire . Extra load tires may
be identified as "XL", "x l" , "E X TRA LOAD", or
"RF" on the sidewall.
Gross Axle Weight Rating ("GAWR ")
means the load-carrying capa city of a s ingle
axle system, measured at the tire-ground in-
terfaces.
liJJ>

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Tires and wheels 197
Gross Vehicle Weight Rating ("GVWR") Ply
means the maximum total loaded weight of
the vehicle .
Groove
means the space between two adjacent tread
ri bs.
Load rating (code)
means the maximum load that a tire is rated
to carry for a given inflat ion pressure . You
may not find this informat ion on all tires be­
cause it is not requ ired by law.
Maximum load rating
means the load rating for a t ire at the max i­
mum permissible inflation pressure for that
tire .
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accesso ry weight
(c) Vehicle capacity weight, and
(d) Production opt ions we ight
Maximum (permissible) inflation pressure
means the maximum co ld inf lation pressure
to which a tire may be inflated . Also called
"maximum inflation pressure."
Normal occupant weight
means 150 lbs . (68 kilograms) times the
number of occupants seated in the vehicle up
to the tota l seating capacity of your vehicle.
Occupant distribution
means distribution of occupants in a veh icle.
Outer diameter
means the overall diameter of an inflated new
tire .
Overall width
means the linear distance between the exteri­
ors of the sidewalls of an inflated tire, includ­
ing e levations due to labeling, decorations, or
protective bands or ribs. means a layer of
rubber-coated parallel cords.
Production options weight
means the combined weight of those installed
regular production opt ions we ighing over 5
lbs. (2.3 kg) in excess of those standa rd items
which they replace, not previously considered
in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and spec ial trim.
Radial ply tire
means a pneumatic tire in which the ply cords
that extend to the beads are laid at substan­
tially 90 degrees to the centerline of the
tread.
Recommended inflation pressure
see r::!;> page 196, Cold tire inflation pressure .
Reinforced tire
means a tire design to operate at higher loads
and at higher inflation pressures than the cor­
responding standard tire. Reinforced tires
may be identified as "XL", "xl", "EXTRA LOAD",
or "RF" on the sidewal l.
Rim
means a metal support for a tire or a t ire and
tube assembly upo n which the tire beads are
seated .
Rim diamete r
means nominal diameter of the bead seat. If
you change your wheel s ize, you wi ll have to
purchase new tires to match the new r im di­
ameter .
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between rim flanges.
Sidewall
means that portion of a t ire between the
tread and bead .
•
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