brake AUDI Q5 2017 Repair Manual

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Checking and Filling
Engine compartment
Engine compartment
These are the most important items that you can check.
Fig. 196 Typical layout for containers and e ngin e oil fille r cap
(D Jump start po int(+) under a cover 227,267
@ Brake fluid reservoir (CO)) . . . . . . . 224
@ Engine oil filler cap(~) . . . . . . . 221
@ Coolant expansion tank (- L) . . . . . 223
® Jump start point( -) with hex head
screw . . . . . . . . . . . . . . . . . . . . . . . 227, 267
@ Windshield/headlight washer con -
tainer
(W) . . . . . . . . . . . . . . . . . . . 229
The position of the engine oil filling hole
c:> fig. 196 (item@) can differ depending on the
engine design .
A WARNING
Before you check anything in the engine com­
partment, always read and heed a ll WARN­
INGS
c:> &. in Working in the engine compart­
ment on page 217.
Engine oil
Engine oil specifications
The engine oil used must conform to exact speci­
fications.
T he serv ice interval display in the instrument
cluster of your vehicle will inform you when it is
time for an oi l change . We recommend that you
have your oi l changed by an authorized Audi Serv­
ice Advisor.
If you have to top off the oil between oil changes,
use the Audi oil quality standard specified in the
tab~ .
~
219

Checking and Filling
cooling system is not leakin g, a loss can come
from t he coolant boiling through overheat ing
an d be ing pushed out o f the coo ling system .
A WARNING
-
-The cooling system is under pressure. Do
not open t he coolant expansion tank ca p
when the eng ine is hot. This inc reases the
risk of bu rns .
- The coolant add itive and the coolant can be
dangerous to your health. For this reason,
keep the coolant in the o rigina l container
and away from children. There is a risk of
po isoning .
- When working in the eng ine compartmen t,
r emembe r that the rad iator fan ca n switch
on even if the ign ition is swi tc h ed off, which
in creases the risk of in jury.
(D Note
Do not add coolant if the expansion tank is
empty. Air could enter the cooling system and
damage the engine. If this is the case , do no t
cont inue driv ing. See an authorized Audi deal­
er or author ized Audi Se rvice Facility for assis­
tance .
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a quick
glance.
F ig. 19 9 En gi ne co mpa rtme nt: cove r on the brak e fluid
r ese rvoi r
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Before you check anyth ing in the eng ine compart­
ment,
a lways read and h eed all WARNING S
224
¢.&. in Working in the engine compartment on
page 217.
.,. Read the bra ke fluid level from the brake f lu id
reservoir ¢
fig. 199, ~ page 219, fig. 196. The
brake fluid leve l must be between the "M IN"
and "MAX" markings.
The brake flu id reservoir is located a t the rear
partition of the engine compartment on the left
side
¢ page 219.
The fluid level may drop slightly afte r some t ime
due to t he automatic adjustme nt of the brake
pads. This is not ca use for a larm.
If the brake fluid level falls considerably below
the
" M IN " mark, the bra ke warn ing/ indica tor
li gh t (U.S. models:
11111 . Canadian models: .
will come on ¢
page 15 and¢ page 25. Do not
continue to ope rate the veh icle. The comp lete
brake system shou ld be thoroughly checked by an
a uthor ized Audi dealer or qualified workshop and
the cause corrected. If the brake fluid level is too l ow, the brake warn ing/ indicator light w ill illumi­
nate. Contact a n author ized Audi dealer
immedi­
ately .
Chang ing brake fluid
Have the brake fluid changed by an experienced
technician .
Brake fluid absorbs moisture from the air. If the
water content in the brake fluid is too high, cor­
rosion in the brake system may result after ape ­
riod of time . The boiling po int of the brake fluid
will a lso decrease considerably and decrease
bra king pe rformance.
Therefore, the brake fluid must be changed
every
two years .
Always use new brake f lu id which con­
fo rms to Federa l Moto r Vehicle S tandard " FMVSS
116 DO T 4".
The brake fluid reservoir can be diff icult to reach,
therefore, we recommend that you have the
brake fluid changed by your author ized
Audi
dealer .
Your dealer has the correct tools, the
right brake fluid a nd the know -how to do t his for
you . ..,.

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& WARNING
-Brake fluid is poisonous. It must be stored
only in the closed original container out of
the reach of children!
- Brake failure can resu lt from old or inappro­
priate brake fluid. Observe these precau­
t ions:
- Use only brake flu id that meets SAE speci­
fication
J 1 703 and confo rms to Fede ral
Motor Vehicle Standard 116. Always check
with your author ized Audi dealer to make
sure you are using the correct brake fluid.
The correct type of brake fluid is a lso indi­
cated on the brake flu id reservoir.
- The brake fluid must be new. Heavy use o f
the brakes can cause a vapor lock if the
brake fl uid is left in the system too long.
This can serious ly affect the efficiency of
the brakes as well as your safety. This
could result in an acc ident.
Brake fluid w ill damage the pa int of yo ur vehi­
cle.
@) For the sake of the environment
Because of the prob lem of proper disposal of
brake flu id as we ll as the special tools re­
qui red and the necessary expertise, we rec­
ommend that you have the brake fluid
changed by your author ized Audi dealer.
Battery
General information
Under normal operating conditions, the battery
in your Audi does not need any maintenance.
W ith
high outside temperatures or long da ily
drives we recommend that you have the electro­ lyte level checked by an authorized Audi dea ler or
qua lified workshop. The e lectrolyte level should
a lso be checked each t ime the batte ry is charged
¢ page 22 7.
H ave the battery checked when you take your ve­
hi cle in for serv ice. You a re well advised to re­
p lace a batte ry that is o lde r than 5 years .
Check ing and Filling
Hybrid dr ive *: you can find important in format ion
about the high voltage battery under
¢ page 100.
Disconnecting the battery te rminals
Some vehi cle functions (power window regula ­
tors, for examp le) are lost if the batte ry te rm i­
nals a re disconnected . These functions have to be
re learned after the battery terminals a re con­
nected again. To prevent this, the battery should
only be disconnected from the vehicle electrical
system when absolutely necessary for repa irs.
Vehicles not dr iven for long p eriod s
If you do not drive your vehicle over a period of
severa l days or weeks, electrical compone nts are
gradually cut back or switched off. This reduces
energy consumpt ion and maintains starting ca­
pability over a longer per iod
¢ page 192.
T ake into consideratio n that when you unlock
your vehicle, some convenience functions, suc h
as the inter ior lights or the power seat adjust­
ment, may not be ava ilab le. The conve nience
funct ions will be available again when you turn
on the ignition and sta rt the eng ine.
Winter operation
D uring the winter months, battery capacity tends
to decrease as temperatures drop. This is be­
cause more power is also consumed while start­
i ng, and the headlights, rear w indow defogger,
etc., are used more ofte n.
Avo id unnecessary power consumption, pa rtic u­
larly in city traff ic or when traveling only short
distances . Let your author ized Audi dealer check
the capacity of the veh icle batte ry before winter
sets in
¢ page 22 7. A we ll charged batte ry will
not only p reve nt start ing prob lems when the
wea the r is co ld, but will also last longer.
Working on the battery
Be especially careful when working on or near
the battery.
T he battery is loca ted in t he luggage compart­
ment unde r the floo r. B efo re yo u check any thing .,..
225

Wheel s
® Mud and snow capability
"M/5" or "M+S" indicates the tire
is sui table for driving on mud and
snow.
& indicates a winter tire.
@ Composition of the tire cord
and materials
The number of plies indicates the
number of rubberized fabric lay­
ers in the t ire. In general: the
more layers, the more weight a
tire can carry . Tire manufacturers
must also specify the materials
used in the tire. These include
steel, nylon, po lyester and other
materials.
@ Maximum permitted load
This number indicates the maxi­
mum load in kilograms and
pounds that the tire can carry .
@Uniform tire quality grade
standards for treadwear,
traction and temperature resist ance
Treadwear, traction and tempera­
ture ranges ¢
page 247.
@ Running direction
The arrows indicate the running
direction of unidirectional t ires .
You must always follow the speci­
fied running direction
¢page 259.
232
@ Ma ximum permitted
inflation pressure
This number indicates the maxi­
mum pressure to which a tire can
be inflated under normal operat ­
ing condit ions.
Glossary of tire and loading
terminology
Acces sory we ight
means the combined weight (in
excess of those standard items
which may be replaced) of auto­ matic transmission, power steer­
ing, power brakes, power win­
dows, power seats, radio, and
heater, to the extent that these
items are available as factory-in­
stalled equipment (whether in ­
stalled or not) .
Aspect ratio
means the ratio of the height to
the width of the tire in percent .
Numbers of 55 or lower indicate a
low sidewall for improved steer­
ing response and better overall
handling on dry pavement.
Bead
means the part of the tire that is
made of steel wires, wrapped or
reinforced by ply cords and that is
shaped to fit the r im . ...

Wheel s
Maximum (permissible)
inflation pressure
means the max imum cold infla­
tion pressure to which a t ire may
be inflated . Also called "maxi ­
mum inflation pressure."
Normal occupant weight
means 150 lbs. (68 k ilograms)
times the number of occupants seated in the vehicle up to the to­
tal seating capacity of your vehi­
cle .
Occupant distribution
means distribution of occupants
in a vehicle.
Outer d iameter
means the overall diamete r of an
inflated new tire.
Overall width
means the linear distance be­
tween the exteriors of the side ­
walls of an inflated tire , including
elevations due to labeling, deco­ rations, or protective bands or
ribs .
Ply
means a layer of rubber-coated
para llel cords.
234
Production options we ight
means the combined weight of
those installed regular product ion
options weighing over 5 lbs . (2 .3
kg) in excess of those standard
items which they replace, not pre­
viously considered in curb weight or accessory weight , including
heavy duty brakes, ride levelers,
roof rack, heavy duty battery, and
special trim.
Radial ply ti re
means a pneumatic tire in which
the ply cords that extend to the beads are la id at substantially 90
degrees to the centerline of the
tread.
Recommended inflation
pressure
see ¢ page 233 , Cold tire infla­
tion pressure.
Reinforced tire
means a tire designed to operate
at higher loads and at higher in­
flation pressures than the corre­
sponding standard tire . Rein ­
forced tires may be identified as "XL", "xl", "EXTRA LOAD", or "RF"
on the sidewall. ...

Wheels
&,. WARNING -
-Only use tire/rim combina­
tions and suitable wheel bolts
that have been approved by
Audi. Otherwise, damage to
the vehicle and an accident could result.
-For technical reasons, it is not
possible to use tires from oth­
er vehicles -in some cases,
you cannot even use tires from
the same vehicle model.
-Make sure that the tires you
select have enough clearance
to the vehicle. Replacement
tires should not be chosen
simply based on the nominal
size, because tires with a dif­
ferent construction can differ
greatly even if they are the
same size. If there is not enough clearance, the tires or
the vehicle can be damaged and this can reduce driving
safety and increase the risk of
an accident.
-Only use tires that are more
than six years old when abso­
lutely necessary and drive
carefully when doing so.
-Do not use run-flat tires on
your vehicle. Using them when
238
not permitted can lead to ve­
hicle damage or accidents.
-If you install wheel covers on the vehicle, make sure they al­low enough air circulation to
cool the brake system. If they do not, this could increase the
risk of an accident.
Tire wear/damage
Fig. 203 Tire profile: treadwear indica­
tor
Tire wear
Check the tires regularly for wear.
-Inflation pressure that is too low
or high can increase tire wear
considerably.
-Dr iving quickly through curves,
rapid acceleration and heavy
braking increase tire wear.
-Have an authorized Audi dealer
or authorized Audi Service Facili­
ty chec k the wheel alignment if
there is unusual wear.
-Have the wheels rebalanced if an imbalance is causing noticeable
i.

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passengers that the vehicle is in­
tended to carry ("seating capaci­
ty") with an assumed weight of
150 lbs . (68 kg) for each passen­
ger at a designated seating posi­
tion and the total weight of any
luggage in the vehicle. If you tow
a trailer, the weight of the trailer hitch and the tongue weight of
the loaded trailer must be includ­
ed as part of the vehicle load.
The
Gross Axle Weight Rating
("GAWR") is the maximum load
that can be applied at each of the
vehicle's two axles .
The fact that there is an upper limit to your vehicle's Gross Vehi­
cle Weight Rating means that the
total weight of whatever is being
carried in the vehicle (including
the weight of a trailer hitch and
the tongue weight of the loaded
trailer) is limited. The more pas­
sengers in the vehicle or passen­ gers who are heavier than the
standard weights assumed mean
that less weight can be carried as
luggage.
The Gross Vehicle Weight Rating
and the Gross Axle Weight Rating are listed on the safety compli­
ance sticker label located on the
Wheels
driver's side B-pillar q page 240,
fig. 204.
&,_ WARNING
Overloading a vehicle can cause
loss of vehicle control, a crash
or other accident, serious per­
sonal injury, and even death.
-Carrying more weight than your vehicle was designed to carry will prevent the vehicle
from handling properly and increase the risk of the loss of
vehicle control.
-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 sud­
denly, including a blowout and
sudden deflation, causing loss
of control and a crash.
-Always make sure that the to­
tal load being transported -
including the weight of a trail­
er hitch and the tongue
weight of a loaded trailer -
does not make the vehicle
heavier than the vehicle's
Gross Vehicle Weight Rating.
243

Emergency assistance
Performing the repair
Applies to: vehicles w ith tire repair k it
Fig. 213 Performing the repair
Preparations
.,. Park the vehicle as far as possible from moving
traffic in the event of a flat tire.
.,. Set the
parking brake to prevent the vehicle
from ro lling un intent ionally.
.,. Sh ift the
selector lever into the P po sition .
.,. Determ ine whether a repair with the tire repair
kit is possible or not¢
page 253.
.,. Let all of the passengers
exit the vehicle and
move a safe distance away¢_&. .
.,. Take the
sealant bottle and the compressor
out of the luggage compartment ¢ page 107,
fig. 121.
.,. Affix the label "max. 50 mph (80 km/h)", found
on the sealant bottle, to the instrument cluster
where it can be seen by the driver.
Filling a tire
.,. Shake the bottle thoroughly before fi lling.
.,. Screw the accompanying filling hose complete­
ly onto the bottle. This breaks through the foil
seal automatically at the connection .
.,. Remove the valve cap from the tire valve and
unscrew the valve insert using the accompany­
ing valve insert tool
~fig. 213 .
.,. Lay the valve insert on a clean surface .
.,. Remove the sealing plug from the filling hose
and connect the hose to the tire valve .
.,. Hold the bottle with the bottom facing upward
and empty the entire contents into the tire .
.,. Then pull out the hose and screw the valve in­
sert tightly back into the tire valve.
254
Inflating a tire
.,. Screw the filling hose for the compressor onto
the tire valve and insert the connector into the
cigarette lighter.
.. Inflate the tire to between 29 PSI (200 kPA)
and 36 PSI (250 kPA) and read the pressure on
the gauge .
.,. If this tire pressure is not reached, drive your
veh icle approximately 33
ft (10 meters) for ­
ward or backward so that the sealant can be re­
distr ibuted inside the tire. If at this time the re­
qui red air press ure st ill cannot be reached, the
tire is too badly damaged and cannot be re­
pa ired with the tire sealant .
Final inspection
.,. Stop the vehicle after dr iv ing for about 10 mi­
nutes and check the tire pressure.
.,. If the tire pressure is lower than 19 PSI
(130 kPA), then the t ire is too severely dam­
aged . Do not continue driving . Please seek pro­
fessional ass istance .
&_ WARNING
- Turn on the emergency flashers if you have a
flat tire while in moving traffic. This is for
your protection and the for the safety of
other drivers.
- Take care to move all of the passengers to a
safe place (behind a guard rail for example) .
- Read and follow the manufacturer's safety
precaut ions on the compressor and in the
instructions on the bottle of sealant!
- If a tire pressure of 29 PSI (200 kPA) cannot
reached after inflating for 12 minutes, then
the tir e is too severely damaged. Do not
continue driving.
- Obta in qualified help if it is not possible to
pe rform the repair with the tire sealant .
- If the tire pressure is less than 19 PSI
(130 kPA) after 10 minu tes of driv ing, then
the tire is too severely damaged . Do not
con tinue driv ing. Seek profess ional assis­
ta nce.

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(D Note
Special care is required if you are repairing
the tire on a steep incline.
@ Tips
- Do not operate the compressor for more
than 12 minutes continuously, otherwise it
can overheat. Once the compressor has
cooled, you can continue to use it.
- If sealant has spi lled out, let it dry and then
you can remove it by peeling it away like a
foil.
- Remember to obtain a new bott le of sealant
from your authorized Audi dealer after re­
pair ing a tire. After this, the functionality of
the tire repair set is restored .
- Obey all laws.
Replacing wheels
Before changing a wheel
Observe the following precautions for your own
and your passenger's safety when changing a
wheel.
"" After you experience a tire failure, pull the car
well away from moving traff ic and try to reach
level ground before you stop¢_& .
.. All passengers sho uld
leave the car and move
to a safe location (fo r instance, behind the
guardrai l) ¢ .&_ .
.. Engage the
par king b rake to prevent yo ur vehi ­
cle from roll ing unintentionally ¢&_ .
.. Move
selecto r le ver to po sitio n P ¢ &_ .
"" If you are towing a trailer: unh itch the trailer
from your veh icle.
"" Block the diagonally opposite wheel with the
folding chocks o r other objects .
""T ake the
jac k* and the inflatable spa re tir e*
out of the luggage compartment¢ page 250 .
A WARNING
You or your passengers cou ld be inj ured while
changing a wheel if you do not follow these
safety precautions:
- If you have a flat tire, move a safe distance
off the road. Turn off the engine, turn the
Em ergenc y ass is tanc e
emergency flashers on and use other wa rn­
ing dev ices to alert other motorists.
- Make sure that passengers wait in a safe
place away from the vehicle and well away
from the road and traff ic.
- To help prevent the veh icle from moving
suddenly and possib ly slipping off the jack*,
always fully set the parking brake and block
the wheel diagonally opposite the wheel be­ i n g changed with the fold ing c hocks or oth­
er objects . When one front whee l is lifted
off the ground, placing the Automatic
Transmission in P (Park) w ill
not prevent the
veh icle from moving.
- Before you change a wheel, be sure the
gro und is leve l and firm.
If necessary, use a
sturdy board under the jack*.
- Always s tore the vehicle too l kit, the jack*
and the replaced tire in the lugg age com­
partment
¢ page 136.
Changing a wheel
When you change a wheel, follow the sequence
described below s tep-by -step and in exactly that
order.
1. Remove the de corative wheel cover* . For
more detai ls see also
¢page 256, Decaro-
tive wheel covers
o r r::!> poge 256, Wheels
with wheel bolt cops .
2. Loosen the w
heel bolts¢ page 256 .
3. Locate the proper mounting point for the
jack* and align the jack* below that point
¢ page 257.
4. Li ft the car with the jack*¢ page 257.
s. Remove the wheel with th e flat tire and then
insta ll the
inflatable spar e tire*
¢ page 258.
6. Tighte n all whee l bolts lightly.
7 .
Lo wer the vehicle wi th the jack *.
8 . Use the whee
l bolt wrench and
firml y tighten
all wheel bo lts
r::!> poge 256 .
9. Replace the decorat ive wheel co ver* .
255
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.. Take t ight hold of the end of the wrench handle
and turn the wheel bolts
c o un ter-cloc kwi se
about one single tu rn in the d irection of arrow
r=> fig . 216.
Tigh tening
.. Install the wheel b olt w renc h over the wheel
bolt and push it down as far as it will go .
.. Take tight hold of the
end of the wrench handle
and turn each wheel bolt
cl oc kwise until it is
seated.
_& WARNING
- Do not use force or hurry when changing a
wheel - you can cause the vehicle to slip off
the jack* and cause ser ious personal inju­
ries.
- Do not loosen the wheel bolts more than
one turn
before you raise the vehicle with
the jac k*. -Yo u ris k an injury.
@ Tips
If a wheel bolt is very tight, you may find it
easier to loosen by carefu lly pushing down on
the end of the wheel bo lt wrench with
one
foot only.
As you do so, hold on to the car to
keep your balance and take care not to slip.
Raising the vehicle
The vehicle must be li~ed with the jack* first be­
fore the wheel can be removed .
Fig . 21 7 Sill pane ls: markin gs
Em ergen cy a ssis tanc e
Fig . 2 1 8 Sill: pos ition ing the jack
.. Engage the parking brake to prevent your vehi­
cle from rolling unintentionally
.. Move the
sel ecto r le ver to po sitio n P.
.. Find the mark ing (imprint) on the sill that is
nearest the wheel that will be changed
r=> fig . 217 . Behind the marking, there is a lift­
ing point on t he sill fo r the jack* .
"" Turn the
ja ck * located under the lifting point
on the sill to raise the jack until its arm @
r=> fig. 218 is located under the designated plas ­
tic mo unt
r=> A r=> (j) .
.. Align the jack* so that its arm@r=>fig. 218 en ­
gages in the designated lifting point in the door
sill and the movable base @ lies flat on the
ground. The base @ must be
vertical under the
lifting point @.
"" Wind the jack* up furthe r unt il the flat tire
comes off the g round
r=> _&. .
Pos ition the jack* onl y under the designated lift­
ing points on the s ill
r=> fig . 217 . There is exactly
one location for each wheel. The jack* must not
be pos itioned at any othe r loca tion
r=> & r=> @.
An un stable surf ace under the jack* can cause
the vehicle to slip off the jack* . Always prov ide a
firm base for the jack* on the ground .
If necessa­
r y place a s turdy board or similar support unde r
t h e jack*. O n
hard, slipp ery surfa ce s (such as
t il es) use a r ubber mat or sim ilar to prevent the
jac k* from slipp ing
r=> .&. .
_& WARNING
-
-You or your passengers could be i njured
while changing a wheel if you do not follow these safety precautions :
257