2015 AUDI A7 brake

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 vehi­
cle within a safe distance.
-Tires on a vehicle that has
been overloaded can fail
suddenly, including a blow­
out and sudden deflation,
causing loss of control and a
crash.
-Always make sure that the total load being transported - including the weight of a
trailer hitch and the tongue
weight of a loaded trailer - does not make the vehicle heavier than the vehicle's
Gross Vehicle Weight Rat­
ing .
Determining correct load
limit
Use the example below to cal­
culate the total weight of the
passengers and luggage or oth­
er things that you plan to trans­
port so that you can make sure
that your vehicle will not be
~ overloaded.
Tires and wheels 257
Steps for Determining
Correct Load Limit
1. Locate the statement "THE
COMBINED WEIGHT OF OC­
CUPANTS AND CARGO
SHOULD NEVER EXCEED XXX KG OR XXX LBS" on your ve­
hicle's placard (tire inflation
pressure label)
¢ page 247,
fig. 200.
2. Determine the combined
weight of the driver and pas­sengers that will be riding in
your vehicle.
3. Subtract the combined
weight of the driver and pas­
sengers from
"XXX" kilo­
grams or
"XXX" pounds
shown on the sticker
¢ page 247, fig. 200.
4. The resulting figure equals the available amount of car­go and luggage load capaci­
ty. For example, if the
"XXX"
amount equals 1400 lbs.
and there will be five 150 lbs. passengers in your vehi­
cle, the amount of available
cargo and luggage load ca­
pacity is 650 lbs. (1400-7 50
(5
X 150) = 650 lbs.)
5. Determine the combined
weight of luggage and cargo ""
•
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'

260 Tires and wheels
A WARNING
Sudden tire failure can lead
to loss of control, a crash and serious personal injury!
-Never drive a vehicle when the tread on any tire is worn down to the wear indica­
tors.
-Worn tires are a safety haz­
ard, they do not grip well on
wet roads and increase your risk of "hydroplaning" and
loss of control.
-Always keep chemicals that
can cause tire damage, such
as grease, oil, gasoline and brake fluid away from tires.
-Tires age even if they are
not being used and can fail
suddenly, especially at high
speeds. Tires that are more
than 6 years old can only be used in an emergency and
then with special care and at lower speeds.
-Never mount used tires on your vehicle if you are not sure of their "previous histo­
ry." Old used tires may have
been damaged even though
the damage cannot be seen
that can lead to sudden tire
-failure and loss of vehicle control.
New tires and replacing
tires and wheels
New tires and wheels have to
be broken in.
Fig. 204 Tire specification codes on
the sidewall of a tire
No. Description
CD Passenger car tire (where
applicable)
@ Nominal width of tire in
millimeters
® Ratio of height to width
(aspect ratio)
@ Radial
® Rim diameter code

Tires and wheels 265
sure of their "previous histo-and sudden deflation and •
ry." Old used tires may have loss of control. • '
been damaged even though -Temperature grades apply
the damage cannot be seen to tires that are properly in-
that can lead to sudden tire flated and not over or un-
failure and loss of vehicle derinflated.
control. -For technical reasons it is
-All four wheels must be fit- not always possible to use
ted with radial tires of the wheels from other vehicles -
same type , size (rolling cir-
in some cases not even
cumference) and the same wheels from the same vehi-
tread pattern. Driving with cle model.
different tires reduces vehi- -If you install wheel trim
cle handling and can lead to discs on the vehicle wheels,
a loss of control. make sure that the air flow
-If the spare tire is not the to the brakes is not blocked.
same as the tires that are Reduced airflow to the
mounted on the vehicle - for brakes can them to over-
example with winter tires - heat, increasing stopping
only use the spare tire for a distances and causing a col-
short period of time and lision.
drive with extra ca re. Refit -Run flat tires may only be
the normal road wheel as used on vehicles that were
soon as safely possible. equipped with them at the
-Never drive faster than the factory. The vehicle must
maximum speed for which have a chassis designed for
the tires on your vehicle are run flat tires. Incorrect use
rated because tires that are of run flat tires can lead to
driven faster than their rat- vehicle damage or acci-
ed speed can fail suddenly. dents. Check with an au-
M -Overloading tires cause heat thorized Audi dealer or tire N <(
build-up, sudden tire fail- specialist to see if your vehi-(.J
'SI: ,....,
ure, including a blowout cle can be equipped with ... \!) 1.1'1 ,...., 1.1'1 ,....,

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,...., ..,., ,....,
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of wheel bolts is matched to the
factory installed r ims. If differen t rims are fit­
ted, the correct wheel bolts with the right l ength and correctly shaped bolt heads must
be used. This ensures that wheels are fitted
securely and that the brake system functions
correctly .
In certain circumstances, you may not use
wheel bo lts from a different vehicle -eve n if it
i s the same model
~ page 296.
_&. WARNING
Improperly tig htened or maintained whee l
bolts can become loose ca using loss of
contro l, a co llision and serious persona l in­
jury.
- Always keep the wheel bolts and the threads in the wheel hubs clean so the
whee l bolts can turn easily and be prop­
erly t ightened.
- Never grease or oil the wheel bo lts and
the threads in the wheel hubs. They can become loose wh ile driving if greased or
o iled, even if tightened to the specif ied
torque .
- Only use wheel bolts that belong to the
rim being installed.
- Never use different whee ls bolts on your
vehicle .
-Always maintain the correct tighten ing
torque for the wheel bo lts to reduce the
risk of a wheel loss . If the tightening tor ­
que of the wheel bolts is too low, they
can loosen and come out when the vehi­
cl e is moving.
If the tightening torque is
too high, the whee l bolts and threads
can be damaged and the wheel can be­
come loose.
Q;) Note
The spec ified torque fo r the wheel bo lts is
90 ft lb (120 Nm) w ith a toleran ce of± 7,4
ft lb(± 10 Nm). Torque wheel bo lts diago-
Tire s an d wheel s 269
nally . After changing a whee l, the torq ue
must be checked as soon as possible with a
torque wrench -preferably by an author­
i zed Audi dealer or qualif ied workshop.
Low aspect ratio tires
Your Audi is factory-equ ipped w ith low aspect
ratio tires . These tires have been thoroughly
tested and been selected specifically for your model for their superb perfo rmance, road fee l
and hand ling u nder a variety of driving condi­
tions . Ask your au thorized Aud i dealer for
more details .
T he low aspect ratio of these t ires is ind icated
by a numera l of
55 or l ess in the tire's si ze
designation. The n umera l represents the ra tio
of the ti re's sidewall height in relation to its
tread width expressed in percentage . Conven­
tiona l tires have a height/width ratio of 60 or
more.
The perform ance o f low-a spe ct-r atio tire s is
p ar ticul arl y s ens it iv e to imp ro per infl ation
pressur e. It is t herefo re im porta nt t hat low
a spect ratio t ires are inflat ed to the specified
pr essure and that the inflation pressure is
r e gularly checked and ma int ained. Tire pr es­
s ure s should be check ed at lea st on ce a
month and alwa ys befor e a long trip
~ page 252 , Checking tire pressure.
What you c an do to avoid tire and rim
damage
Low aspect ratio tires can be damaged more
easily by impact w it h potholes, curbs, gull ies
o r r idges on the road, pa rtic ularly if the tire is
u nder infla ted .
In order to minimize the occurrence of impact
damage to the tires of your vehicle, we recom­
mend that you observe the following p re ca u­
tions:
- Always ma inta in recommended inflation
p ressures . Check your tire pressu re eve ry
2 ,000 miles (3,000 km) and add air if neces­
sary .
- Dr ive caref ully on roads wi th potholes , deep
gullies o r ridges. The impact from driv ing ..,. •
•

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'SI: ,...., \!) ..,.,
,...., ..,., ,....,
Changing a wheel
Before changing a wheel
Observe the following precautions for your
own and your passenger's safety when chang­
ing a wheel .
.,. After you experience a tire fa ilure, pull the
car well away from moving traffic and try to
reach
level gro und before you stop¢.&_ .
.. All passengers should
leav e the car and
move to a safe location (fo r instan ce, be hind
the guardra il) ¢.&_ .
.. Engage the
parkin g brake to prevent your
vehicle from ro lling unintentionally ¢.&_ .
.. Move
selecto r le ver to p osition P ¢ .&_ .
1> Ifyou are towing a trai ler, unh itch the tra iler
from your vehicle .
.,. Take the
jack and the spare tire out of the
luggage compartment
¢ page 273,
¢ page 274 .
.8, WARNING
You or your passengers cou ld be injured
while changing a whee l if yo u do not fol­
low t hese safety precautions:
- If you have a flat t ire, move a safe dis ­
tance off the road. Tur n off the eng ine,
turn the emergency f lashers on and use
other warning dev ices to alert other mo­
torists.
- Make sure that passengers wait in a safe
place away from the ve hicle and well
away from the road and traff ic.
- To help p revent the vehicle from moving
s u dden ly and possibly slipping off the
jack, always fully set the parking brake
and block the wheel diagonally opposite
the wheel being changed. Whe n one
front wheel is lifted off the ground, plac­ ing the A utomat ic Transm iss ion in P
(Pa rk) will
not p revent the vehicle from
moving.
- Before you change a wheel, be su re the
ground is level and fi rm. If ne cessa ry,
use a st urdy board under the jack.
-
What do I do now? 275
- Always store the vehicle tool kit, the jack
and the replaced tire in the luggage com­ partment
c::>page 134.
(D Tips
Before changing the whee l, you must acti­
vate the jacking mode, so that the auto­ matic controls for the Adaptive Air Sus­
pension* do not make it more d iff icult to
lift the vehicle with the jack
c::> page 2 77 .
Changing a wheel
When you change a wheel , follow these­
quence described below s tep-by-s tep and in
exactly that order .
l. Activate the vehicle jack mode*
¢page 277 .
2. Remove the decorativ e wheel co ver* . For
more details see also
c::> page 2 76, Deco­
rative wheel covers
or c::> page 2 76,
Wheels with wheel bolt caps .
3. Loosen the wh eel bolt s ¢page 277.
4 . Loca te the p roper moun ting poin t for the
jack and align the jack be low that point
¢ page 277 .
5.
R ais e the car with the jack¢ page 2 77.
6. Remove the
wheel with the flat tire and
then install
the spar e c::>page 279.
7. Tighten all whee l bolts lightly .
8.
Lo wer the vehicle with the jack .
9 . Use the wheel bolt w rench and
firmly
t ighten al l wheel bolts ¢ page 2 77.
10 . Replace the decorative
wh eel c ov er* .
11. Deactivate the vehicle jack mode* in the
MM I:
ICARI f u nction button > (Car )* sy s­
tems
contro l button > S erv ici ng & che cks
> A ir s usp .: jac k mode > Off .
The vehicle jack mode * switches off automati­
ca lly at speeds above 6 mph (10 km/h) .
.8, WARNING
-Always read and fo llow all WARNINGS and
i nformat ion
c::> A in Raising the vehicle on
page 278
and c::> poge 280.
•
•

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Loosening and tightening the wheel
bolt s
The wheel bolts must be loosened before rais­
ing the vehicle.
Fig . 212 Changing a wheel: loosening the whee l bo lts
Loosening
.. Slide the wheel wrench onto the wheel bolt
as far as it wi ll go .
.. Take tight hold of the
end of the wrench
hand le and turn the whee l bolts
counter­
clockwise
about one single turn in the direc­
tion of arrow c:>
fig. 212.
Tightening
.. Slid e the wheel wrench onto the whee l bolt
as far as it will go.
.. Take tight hold of the
end of the wrench
handle and turn each wheel bolt
clockwise
until it is seated.
A WARNING
- Do not use force or hurry when changing
a whee l -you can cause the vehicle to s lip
off the jack and cause serious personal
injuries.
- Do not loosen the wheel bolts more than
one turn
before you raise the vehicle with
the jack. -You risk an injury.
(D Tips
-Never use the hexagonal socket in the
handle of the screwdriver to loosen or
tighten the wheel bolts.
-If a wheel bolt is very tight, you may find
it easier to loos en by carefully pushing
down on the end of the wheel bolt
wrench with
one foot only . As you do so,
What do I do now? 27 7
hold on to the car to keep your balance
and take care not to slip.
Raising the vehicle
The vehicle must be lifted with the jack first
before the wheel can be removed.
Fig . 213 Sill panels : marking s
Fig. 214 Sill: position ing the vehicle jack
.. Activate the vehicle jack mode* in the MMI:
!CARI function button> (Car)* systems con­
trol button>
Servicing & checks > Air susp .:
jack mode > On .
.,. Engage the parking brake to prevent your
veh icle from rolling unintentionally.
.,. Move the
selector lever to position P .
.. Find the marking (imprint) on the sill tha t is
nearest the whee l that will be changed
r=>fig. 213. Behind the marking, there is a
lifting point on the sill for the veh icle jack .
.. Veh icles with a sill: remove the cover from
the sill before lift ing the veh icle with a vehi­
cle jack
c:>page 278 .
.,. Turn the vehicle jack located under the lift­
ing point on the sill to raise the jack unti l its
arm @c:>
fig. 214 is located under the des­
ignated plastic mount c:> &, c:>(D .
.. Align the jack so that its arm@c:>
fig. 214
engages in the designated lifting point in
the door sill and the movable base@ lies
~

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Taking the wheel off/installing the spare
Follow these instructions step-by-step for
changing the wheel.
Fig. 216 Changing a wheel: using the screwdriver han­
dle (with the blade removed} to turn the bo lts
F ig . 2 17 Changing a wheel: alignment pin ins ide the
top hole
After you have loosened a ll wheel bolts and
ra ised the veh icle off the ground, remove and
replace the wheel as follows:
R emoving the wheel
.. Use the hex agon al so ck et in th e screw driv­
e r handle
to comp letely remove the top­
most wheel bo lt and set it aside on a
clean
s u rface ¢fig. 216.
.. Screw the threaded end of the alignm ent
pin from the tool k it hand -tight into the
empty bolt hole
¢fig. 217.
.. Then remove the other wheel bo lts as de­
scribed above .
.. Take off the wheel leav ing the alignment pin
in the bolt hole
¢ (D.
Putting on the spar e wheel
.. Lift the spare wheel and carefully slide it
over the alignment pin to guide it in place
¢(D.
What do I d o now ? 2 79
.. Use the hexagonal socket in the screwdriver
handle to screw in and tighten all wheel
bolts
slightly.
.. Remove the alignment pin and insert and
tighten the remaining wheel bolt slightly like the rest.
.. Turn the jack handle counter-clockwise to
lower the veh icle until the jack is fully re­
leased .
.. Use the wheel bo lt wrench to tighten all
wheel bo lts f irm ly
¢page 277. Tighten
them
crosswise, from one bolt to the (ap­
proximately) opposite one, to keep the
wheel centered.
(D Note
When removing or installing the whee l,
the rim could hit the brake rotor and dam­
age the rotor. Work carefu lly and have a
second person help you.
@ Tips
Neve r use the hexagonal socket in the han ­
dle of the screwdriver to loosen or tighten
the w heel bo lts.
- Pull the reversible blade from the screw­
dr iver before you use the hexagonal
socket in the hand le to turn the wheel
bolts.
- When mount ing tires w ith
unidi rectional
tread design
make sure the tread pat­
tern is po inted the right way
~page 280.
-The wheel bo lts shou ld be clean and easy
to turn. Check for dirt and corrosion on
the mating surfaces of both the wheel
and the hub. Remove all d irt from these
surfaces before remounting the whee l.

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Fuses and bulbs
Fuses
Replacing fuses
Fuses that have blown will have metal strips
that have burned through.
Fig . 2 18 Dr iver side of the cockp it: fuse panel cove r
The fuses are located at the front left and
r igh t of the cockpit and behi nd the trim on
the right side of the luggage compartment .
.. Switch the ign ition and the affected electr i­
ca l equ ipment off .
.. Check the following table to see which fuse
belongs to the consume r .
.. Remove the cover
r:!;> fig. 218 or r:!;> page 221,
Opening the side trim .
.. To remove the purple plastic cl ip if necessa­
ry
ll, hold onto it at the small s ide and pull
it out of the fuse panel
r:!;> page 281,
fig. 219 .
.. Remove the clamp from the rea r side of the
fuse cover ¢
fig. 218 .
.. Remove the fuse using the cl amp and re­
pla ce the blown fuse w ith an identical new
one.
& WARNING , -
Do not repair f uses and never replace a
blown fuse w ith one that has a higher amp
rating. This can cause damage to the e lec­
trical system and a fire.
"' rl
~ 11 You can dis pose of the plastic clip after removing it.
Fu se s and bulb s 281
(D Note
If a new fuse burns out again after short ly
have you have insta lled it, have the electri ­
ca l system c hecked by yo ur authorized
A udi dealer .
{!) Tips
-The following table does not list fuse lo ­
cat ions that are not used .
- Some of the equipment items listed are
opt ional or only available on certa in
mode l configurations.
Driver side cockpit fuse assignment
Fi g. 21 9 Driver side cockpit : fuse pa nel w ith plastic
bracket
Fuse panel @ (blac k)
No . Equipment Amps
Switch panel, electromechanica l
1 parking brake, seat heating, 5
starting assist, control module
2 Au toma tic d imm ing in terior
5 rearview mir ro r, horn
3 Exhaust system (diesel engine) 10