brake AUDI A5 COUPE 2016 Workshop Manual

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Checking and Filling
Engine compartment
Engine compartment
These are the most important items that you can check.
Fig. 160 Typical layout for containers and e ngin e oil fille r cap
(D Eng ine o il filler cap ( @ Jump start po int(+) under a cover
@ Brake fluid reservoir
((0) ...... .
@ Coolant expansion tank (- L) .... .
® Jump start point( -) with hex head
195
202,237
199
198
screw . . . . . . . . . . . . . . . . . . . . . . . 202, 237
@ Windshield/headlight* washer con-
tainer
(W) . . . . . . . . . . . . . . . . . . . 204
The position of the engine oil filling hole
c:> fig. 160 (item @) can differ depending on the
engine design .
A WARNING
Before you check anything in the engine com­
partment, always read and heed all WARN­
INGS
c:> &. in Working in the engine compart­
ment on page 191.
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
table .
Audi oil quality standard
Gasoline
VW 502 00 or
engine vw 504 00
193

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-To avoid being burned, do not spill anti­
freeze or coolant on the exhaust system or hot engine parts. Under certain condi­
tions, the ethylene glycol in engine cool­ ant can catch fire.
- Antifreeze is poisonous. Always store anti­
freeze in its original container and well out
of the reach of children.
- If you drain the coolant, it must be caught
and safely stored in a proper container
clearly marked "poison".
(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 not continue driving. Seek professional
assistance.
- Coolant pollutes the environment and could
cause an engine fire. Excess coolant will be
forced out through the pressure relief valve
in the cap when the engine becomes hot.
-If, in an emergency, only water can be add­
ed, the correct ratio between water and an­
tifreeze c::>
page 196 must be restored as
soon as possible.
@) For the sake of the environment
Drained coolant should not be reused. Always
dispose of used coolant while observing all
environmental regulations.
Radiator fan
The radiator fan switches on automatically by it­
self.
The radiator fan is driven by the engine via the V­
belt . The viscous clutch regulates the speed of
the fan according to the temperature of the cool­
ant.
An auxiliary electric radiator fan* switches on and
off depending on coolant temperature and other
vehicle operating conditions.
After you switch the engine off, the auxiliary fan
can continue running for up to 10 minutes -even
Checking and Filling
with the ignition off. It can even switch on again
later by itself c::>
&, if
- the temperature of the engine coolant rises due
to the heat build-up from the engine in the en­
gine compartment, or
- the engine compartment heats up because the
vehicle is parked in intense sunlight.
A WARNING
-To reduce the risk of personal injury never
touch the radiator fan.
- The auxiliary electric fan is temperature
controlled and can switch on suddenly even
when the engine is not running.
- The auxiliary radiator fan switches on auto­
matically when the engine coolant reaches a
certain temperature and will continue to run
until the coolant temperature drops.
Brake fluid
Checking brake fluid level
The broke fluid level con be checked with o quick
glance .
Fig. 164 Engine compartmen t: Cover on the brake flui d
re servoir
Before you check anything in the engine compart ­
ment,
always read and heed all WARNINGS
c::> _.& in Working in the engine comportment on
page 191.
.,. Read the brake fluid level from the brake fluid
reservoir c::>fig.164,
c::>poge 193, fig .160 . The
brake fluid level must be between the "MIN"
and "MAX" markings.
199

Check ing and F illing
The brake fluid rese rvoir is located at the rear
partition of the engine compartment on the l eft
side
c!,> pag e 193 .
The fl uid level may drop slightly after some time
due to the automatic adjustment of the brake
pads . This is not cause for alarm.
If th e b rake fl uid level fa lls considerably be low
the "M IN" mark, the b rake warning/ind icator
lig ht ( U.S. mode ls :
1111 , Canadian models:. )
will come on
c!,> page 15 . Do not contin ue to oper ­
ate the vehicle . T he comp lete brake system
should be thoroughly checked by an authori zed
Aud i dealer or qualified workshop and the cause
corrected . If the brake flu id level is too low, the
b rake warning/indicator light will i llum inate.
Contact a n author ized Audi dealer
immediately .
{D) Tips
The brake fluid reservoir is located under­
neath the cover .
Changing brake fluid
Have the brake fluid changed by an experienced
technician .
Brake fluid absorbs mo isture from the air. If the
water content in the b rake fluid is too high, cor­
rosion in the brake system may resu lt afte r ape ­
riod of t ime. The boiling poi nt of the brake flu id
will also decrease cons iderably and decrease
b raking perfo rman ce.
Therefore, the brake fluid must be changed
every
two year s.
Always use new brake fluid wh ic h con­
forms to Fede ral Motor Veh icle Standard "FMVSS
1 16 DO T 4".
The brake fluid reservoir can be diff icult to reach,
therefore, we recommend that yo u have the
brake fl uid changed by yo ur autho rized
Audi
dealer .
Your dealer has t he corre ct tools, t he
right brake fluid and the know-how to do this for
you.
A WARNING
- Brake fluid is poisonous. It must be stored
only in the closed orig inal container out of
the reach of chi ldren!
200
- Bra ke fa ilure ca n result from old or inapp ro­
priate brake fluid . Observe these precau­
tions:
- Use only brake fluid t hat meets SA E speci­
fi ca ti on
J 170 3 and con forms to Federa l
Motor Ve hicle Standard 116 . Always check
wi th yo ur autho rized Audi dea le r to make
s ur e yo u are using the correct brake fluid .
The correct type of brake flu id is also ind i­
cated on the b rake fluid reservo ir .
- The brake fluid m ust be new . Heavy use of
the brakes can cause a vapo r lock if the
brake fluid is left in the system too long .
This can se riously affect the efficiency of
the b rakes as well as your safety . This
could resu lt in an accident .
(D Note
Brake fluid will damage the paint of your veh i­
cle.
@ For the sake of the environment
Because of the problem o f proper d isposa l o f
brake fluid as well as the spec ial too ls re­
q ui red a nd the necessary expertise, we rec­
omme nd that you have the bra ke f luid
changed by yo ur autho rized Aud i dea le r.
Battery
, General information
U nder normal operating condit ions, the battery
i n your Audi does not need any maintenance.
With
high outside temperatures or long daily
drives we recommend that you have the elect ro ­
lyte level c hecked by an au thorized Aud i dealer o r
qualified workshop. The electro lyte level shou ld
a lso be che cked each time the battery is c ha rged
c:!,> page 202.
Have the batte ry chec ked when you take yo ur ve­
hicle in for service. You are we ll adv ised to re­
pla ce a battery tha t is older than 5 yea rs.
With certain types of airbag deployment, t he
batte ry is d iscon nected from the ve hicle electri­
ca l system for safety reasons
c!,> .&. in Repair, care
and disposal of the airbags on page 1 42. .,.

be happy to provide more infor­
mation.
® Mud and snow capability
"M/5 " or "M+S" indicates the tire
has character istics that make it
suitable 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 tire. In general: the
more layers , the more weight a
tire can carry . Tire manufacturers
must also specify the materials
used in the tire. These inc lude
steel, nylon, polyester and other
materials.
@ Maximum permitted load
This number indicates the max i­
mum load in kilograms and
pounds that the tire can carry.
@ Uniform tire quality grade
standards for treadwear,
traction and temperature resistance
Treadwear, traction and tempera­
ture ranges ¢
page 222.
;:::: @ Running direction
~ ~ ...
'° V, ....
'° ....
The arrows indicate the running
direction of unidirectional tires .
Wheels
You must always follow the speci­
fied runn ing d irect ion
¢ page 231 .
@ Maximum permitted
inflation pressure
This number ind icates the maxi­
mum pressure to which a tire can
be inflated unde r normal operat ­
ing condit ions.
Glossary of tire and loading
terminology
Accessory weight
means the comb ined weigh t (in
excess of those standard items
which may be replaced) of auto­
matic transm ission, power steer­
ing , power brakes, power win­
dows, power seats, radio, and
heater, to the extent that these
items are available as facto ry-in­
stalled equipment (whether in ­
stalled or not) .
Aspect ratio
means the ratio of the heigh t to
the width of the tire in percent .
Numbers of 55 or lowe r indicate a
low sidewa ll for improved steer­
ing response and better overall
handling on dry pavement. .,.
207

(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options we ight
Ma ximum (permissible)
inflation pressure
means the maximum 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 kilograms)
times the number of occupants
seated in the veh icle up to the to­
tal seating capacity of your vehi­ c le.
Occupant distribution
means distribution of occupants
in a vehicle.
Outer diameter
means the overall diameter 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 .
Wheels
Ply
means a layer of rubber-coated
parallel cords .
Production options weight
means the combined weight of
those installed regular production
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 tire
means a pneumatic tire in which
the ply cords that extend to the beads are laid at substantially 90
degrees to the centerline of the
tread.
Recommended inflation
pressure
see ~ page 208, 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 .,.
209

different tire speeds. For this rea­son, in case of emergency, only
use a spare tire* that is the same
circumference as the regular
tires.
&_ 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.
Wheels
-Only use tires that are more
than 6 years old when abso­ lutely necessary and drive
carefully when doing so.
-If you install wheel covers on
the vehicle, make sure they al­
low enough air circulation to
cool the brake system. If they
do not, this could increase the
risk of an accident.
Tire wear/damage
Fig. 168 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.
-Driving quickly through curves, rapid acceleration and heavy
braking increase tire wear .
-Have an authorized Audi dealer
or authorized Audi Service Facili­
ty check the wheel alignment if
there is unusual wear. ..
213

Wheels
plus maximum load . The maxi­
mum load includes the number of
passengers that the vehicle is in­
tended to carry ("seat ing 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
218
are listed on the safety compli­
ance sticker label located on the
driver's side B-pillar
~ page 215,
fig . 169 .
& 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.

Emergency assistance
Using the spare tire (compact spare tire)
The compact spare tire is only intended for emer­
genc ies until you can reach a repair shop. Repla ce
it as qu ickly as possible with a standard wheel
and tir e.
There are some restrictions on the use of the
compact spare tire. The compact spare tire has
been designed specifically for yo ur type of vehi­
cle. It must not be swapped with a compact
spare tire from another type of vehicle.
Snow chains
F or technica l reasons, the use of snow chains on
the compact spare tire is
not permitted .
If you do have to dr ive with snow cha ins and a
front tire fails, mo unt the spare wheel with t ire
instead of a rear tire. Install the snow chains on
the rear tire and use it to rep lace the defective
front tire .
A WARNING
-Never use the spare tire if it is damaged or if
it is worn down to the tread wear indicators.
-If the spare tire is more than 6 years o ld,
use it only in an emergency and with ex­
treme caution and carefu l dr iving .
- The spare tire is intended on ly for tempora­
ry and short-term use. It shou ld be replaced
as soon as possible with the normal wheel
and t ire.
- After mounting the compact spare t ire, the
t ir e pressure must be checked as soon as
poss ible. The tire pressure of the compact
spare tire must be 4.2 bar; otherwise, you
risk having an accident .
- Do not drive faster than SO mph (80 km/h).
You risk hav ing an accident.
- Avoid full-throttle accelerat ion, heavy brak­
ing, and fast cornering. You risk having an
acc ident.
- Never drive using more than one spare
wheel and tire. You risk having an accident .
- Normal summer or winter tires must not be
mounted on the compact spare wheel rim .
- For technical reasons, the use of tire chains
on the spare tire is not perm itted . If it is
226
necessary to drive with tire chains, the spare
wheel must be mounted on the front axle in
the event of a flat in a rear tire. The newly
ava ilable front wheel must then be installed
in place of the rear wheel w ith the flat tire.
Installing the tire chain before mounting
the wheel and tire is recommended.
- Loose items in the passenger compartment
can cause serious personal injury during
ha rd braking or in an accident. Never store
the spare tire or jack and tools in the pas­
senger compartment.
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 traffic and try to reach
level ground before you stop¢ A_.
.,. All passengers should leave the car and move
to a safe location (for instance, behind the
guardrail) ¢
&_.
.,. Engage the parking brake to prevent your vehi­
cle from rolling unintentionally ¢
A_.
.,. Shift into 1st gear on vehicles with manua l
transmission, or move the
selector lever to the
P position
on vehicles with automatic transmis­
sion.
.,. If you are towing a trailer: unhitch the trailer
from your vehicle.
.,. Take the
jack ¢ page 225 and the spare tire
¢ page 225 out of the luggage compartment .
A WARNING
You or your passengers could be injured while
changing a whee l if you do not follow these
safety precaut ions:
- If you have a flat tire, move a safe distance
off the road. Turn off the engine, turn the
emergen cy flashers on and use other warn­
ing devices to alert other motorists.

.... N
0 I­co .... .... -Make sure that passengers wait in a safe
place away from the vehicle and well away
from the road and traffic.
- To help prevent the vehicle from moving
suddenly and possibly slipping off the jack,
always fully set the parking brake and block
the wheel diagonally opposite the wheel be ­
ing changed with the folding chocks or oth­
er objects. When one front wheel is lifted
off the g round, plac ing the Automatic
T ransmission in "P" (Park) will
not prevent
the vehicle from moving .
- Before you change a wheel, be su re t he
ground is level and firm. If necessary, use a
stu rdy board under the jack.
- Always sto re the veh icle tool k it, the jac k*
and the replaced tire in the luggage com­
partment ¢
page 118 .
(1) Note
If you are cha nging the whee l on a steep in­
cline, use a rock or similar objec t to block the
opposi te whee l to prevent the veh icle from
moving.
@ Tips
Obey all laws .
Changing a wheel
When you change a wheel, follow the sequence
described below step-by-step and in exactly that
order.
1. Remove the deco rative wheel cover * or the
whe el bolt cap s*. For more deta ils see also
¢ page 228, Decorative wheel covers or
¢ page 228, Wh eels with wh eel bolt caps.
2. Loosen the wheel bol ts ¢ page 228.
3 . Locate the proper mounting point for the
jack and align the jack below that point
¢ page 229.
4. Lift the car with the jack¢ page 229.
5 . Remove the
whe el with the flat tir e and then
insta ll the
s pare tire ¢ page 230 .
6. Tighten all wheel bo lts lightly.
7 .
Low er th e ve hicle w it h the ja ck .
Em ergenc y ass is tanc e
8. Use the wheel bolt wrench and firmly tighten
all wheel bo lts in a crisscross pattern
¢ page 228.
9. Replace the deco rati ve w heel co ver* or the
wheel bolt caps* .
A WARNING
Always read and follow all WARNINGS and in­
fo rmation
¢ .&. in Raising the vehicle on
page229and ¢page 231.
After changing a wheel
A wheel change is not complete without the do ­
ing the following .
.,. Always store the vehicle too l kit, the jack*, and
the replaced tire in the luggage compartment
¢ page 118 .
.,. Check the tire pres sure of the spare tire as soon
as poss ible.
.,. As soon as poss ib le, have the
tigh tening tor ­
qu es
on a ll wheel bolts checked with a torque
w rench. The correct tightening torque is
90 ft
lbs.
(120 Nm) .
.,. Hav e the flat tire
repl aced as soon as possible .
(D Tips
-If you notice that the wheel bo lts are co r­
roded and difficult to turn while changing a
tire, they shou ld be replaced before you
check the tightening torque.
- Drive at reduced speed unti l yo u have the
tightening torques checked.
227

Emergency assistance
-Make sure that passengers wait in a safe
place away from the vehicle and well away
from the road and traff ic.
- Make sure jack position is correct, adjust
as necessary and then cont inue to raise
the jack.
(D Note
Do not lift the vehicle by the sill. Position the
vehicle jack only at the designated lifting points on the sill. Otherwise, your vehicle will
be damaged.
Taking the wheel off /installing the spare
tire
Follow these instructions step-by-step for chang­
ing the wheel .
Fig. 179 Changing a wheel: using the screwdriver handl e
(with the blade removed) to turn the bolts
Fig. 180 Changing a wheel: alignment pin insid e the top
hole
After you have loosened all wheel bolts and raised the vehicle off the ground, remove and re­
place the whee l as follows:
Removing the wheel
• Remove the topmost wheel bolt comp letely
with the
hexagonal socket in the screwdriver
230
handle (vehicle tool kit) ¢ fig. 179 and set it
aside on a
clean surface.
• Screw the threaded end of the
alignment pin
from the tool kit hand-tight into the empty bolt
hole ¢
fig. 180.
• Then remove the other wheel bolts as described
above.
• Takeoff the whee l leaving the alignment pin in
the bolt hole¢ (!).
Putting on the spare tire
• Push the spare tire over the alignment pin.
• Screw on the wheel bolts and tighten them
slightly using the hexagonal socket.
• Remove the alignment pin and insert and t ight­
en the remaining wheel bolt slightly like the
rest.
• Tur n the jack hand le counter-clockw ise to lower
the vehicle until the jack is fully released.
• Use the wheel bolt wrench to tighten a ll wheel
bolts firmly ¢
page 228. Tighten them in a
crisscross pattern,
from one bolt to the (ap­
proximately) opposite one, to keep the wheel
centered.
• Perform the steps required after chang ing the
wheel¢
page 227, A~er changing a wheel.
The hexagonal socket makes it easier to remove
the wheel bo lts from the rim . Care should be tak­
en when removing the reversible blade.
(D Note
When removing or installing the wheel, the
rim could hit the brake rotor and damage the
rotor . Work carefully and have a second per­
son to help you.
(D Tips
-When mounting tires with unidirectional
tread design
make sure the tread pattern is
pointed the right way¢
page 231.
-The wheel bolts should be clean and easy to
turn. Check for dirt and corrosion on the
mating surfaces of both the wheel and the
hub. Remove all dirt from these surfaces be­
fore remounting the wheel.