2018 AUDI A4 brakes

Intelligent Technology
& WARNING
- Only apply the brakes for the purpose of
cleaning the brake system whe n road and
t raffic conditions perm it . You must not en­
dange r othe r road users . This increases the
risk of an accide nt.
- Never let the vehicle roll while the e ng ine is
stopped because this increases the risk of a n
a cci den t.
([) Note
- Neve r let the brakes " rub" by pressing the
pedal lightly when braki ng is not actually
necessa ry . T his ca uses the bra kes to over­
h ea t an d inc reases br akin g d istance an d
c a uses wear .
- B efo re driv ing downhill a long distance on a
steep hi ll, decre ase your spee d an d se lec t a
l ower gear . This makes use of t he engine
b raking effe ct and re lieves the brakes . If
you nee d to b rake additionally, b rake in in­
tervals and not continuously .
(D Tips
- If the brake booste r is no t working, yo u
must press the brake pedal with much more
fo rce than normal.
- If you retrofit you r vehicle with a front spoil­
er, whee l covers o r similar items, ma ke sure
that the a ir flow to the front whee ls is not
i nte rr u pted. Othe rw ise the brake system
ca n become too hot.
Electromechanical
steering, Dynamic
steering
T h e electromechanical st eering supports the
driver's steering movements.
Power steering adapts electronically based on
the vehicle speed.
Indicator lights and messages
• St ee ring : malfunction! Plea se stop vehicle
150
If this indicato r light turns on and stays on and
this message appears, the power steering may
have failed.
Stop t he vehi cle in a sa fe location as soon as pos­
s ible . Do
not contin ue driving . See an authorized
Audi dealer or authorized A udi Service Facility for
ass istance .
'I- ij Steering: malfun ction! You may continue
driving
I f the indicato r light turns on and the message
a ppears, the steeri ng wheel may be more d iffi­
cu lt to move o r more sensitive than usu al. The
stee ring wheel may also be at a n ang le when
driving straight.
D rive slowly to an auth o rized Audi dea ler or au ­
thorized Aud i Serv ice Facili ty to have t he mal ­
f unct io n corre cted .
t$Jj Dynamic steering: correcting steering wheel
position
If the indicator light turns on and this message
appears , the dynamic steering * is re in it ia liz ing .
The s teer ing whee l will be easy to move afte r
st ar ting t he engine . Reinitializa tio n might be
ne cessary if the stee ring w heel was moved while
t h e engine was switched off. The disp lay t urns
off if the initialization was successfu l.
(D Tips
- If the . or krfl i ndi cato r ligh t only s tays on
f or a sho rt time, you may cont inue driving .
- Th e dynamic stee ring s tabili ty sys tem s
¢ page 14 6 are not av ailabl e in the event of
a system malfunction .
- For add ition al informa tion o n dynamic
s teering, see
¢ page 133.
ALL-wheel drive (quattro)
App lies to: vehicles wi th all wheel drive
General information
In all whee l dr ive, the dr iv ing power is dis trib ut-
ed between all fo ur whee ls when needed. This
happens automatically depending on your driving
behavior as we ll as the c urrent road conditions.
.,_

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 351.
@ Running direction
The arrows indicate the running
direction of unidirectional t ires .
You must always follow the speci­
fied running direction
¢page 366 .
336
@ Maximum 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.
338
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 33 7, 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
are listed on the safety compli­
ance sticker on the driver's side B­ pillar respectively on the front
end of the driver's door.
& 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.
348
Determining correct load
limit
Use the example below to calcu­
late the total weight of the pas­
sengers and luggage or other
things that you plan to transport so that you can make sure that
your vehicle will not be overload ­
ed.
Steps for Determining Correct Load Limit
1. Locate the statement "THE
COMBINED WEIGHT OF OCCU­
PANTS AND CARGO SHOULD
NEVER EXCEED XXX KG OR XXX
LBS" on your vehicle's placard
(tire inflation pressure label)
¢ page 344, fig. 277.
2. Determine the combined
weight of the driver and pas­ sengers that will be riding in
your vehicle.
3. Subtract the combined weight
of the driver and passengers
from
"XXX" kilograms or "XXX"
pounds shown on the stick­
er ¢ page 344, fig. 2 77.
4. The resulting figure equals the
available amount of cargo and luggage load capacity . For ex­
ample, if the "XXX" amount
equals 1400 lbs. and there will
.,.

a co .... N ,....
N .... 0 0
3 co
wash operator to reduce the risk of acci­dents.
- To reduce the risk of cuts, protect yourself
from sharp metal components when wash­
ing the underbody or the inside of the wheel
housings .
- After washing the vehicle, the brak ing effect
may be delayed due to mo isture on the
brake rotors or ice in the w inter . This in­
creases the risk of an acc ident. The brakes
must be d ried fi rst w ith a few careful b rake
applications.
(D Note
- If you wash t he vehicle in an automatic car
wash, yo u m ust fold the exte rior m irrors in
to reduce the risk of damage to the mirrors.
Power folding exte rior m irrors* must on ly
be fo lded in a nd out using the power folding
fu nct ion.
- To reduce the risk of damage to the rims
and tires, compare the width between the
whee ls on your vehi cle w it h t he dis tan ce be­
tween the g uide rai ls in the
car wash.
- To reduce t he risk of damage, compare the
height and width o f you r vehicle wi th the
Ca re and cleaning
height and w idth of the inside of the car
was h.
- T o red uce the risk of pa int damage, do not
was h the vehicle in d irect sun light .
- T o red uce the risk of d am age to the s urf ace,
do not use insect removing sponges, k itche n
sponges or similar items .
- Mat te finish painted veh icle components:
- To reduce the risk of damage to the sur-
face, do not use polishing agents or hard
wax .
- Never use 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 cou ld be damaged
when the stickers or magne ts are re­
moved .
@ For the sake of the environment
Only wash t he vehicle in facilities s pec ially de­
s ign ed for that pu rpose . This will reduce the
r isk of dirty wate r contaminated with oil from
ente ring the sewe r sys tem.
Cleaning and care information
W hen cleani ng and ca ring for individua l vehicle
components, refer to the follow ing tables . The
i n formation contained there is simply recom­
mendations. For quest ions or for components t
h at are not liste d, co n su lt an autho riz ed Au di
dealer or authorized A udi Se rvice Fac ility . Also
fo llow the information found
in ¢ .&. .
Exterior cleaning
Component Situation Solution
Windshield wiper
Deposits c:> page 61, Cleaning the wiper blades
blades
Headlights /
Deposi ts So
ft spo nge wi th a mild so ap sol ution3>
Tail light s
S ensors /
Deposits Sensors: soft cloth w it h solvent-free cleaning solut ion
Camera len ses Camera le nses: soft clot h w ith alcohol-free cleaning solu-
tion
Snow/ice H
and br ush/solvent-free de-icing spray
Wheels Road salt Water
Brake dust Acid-free special cleaning solution
355

Index
Audi p re sense . . . . . . . . . . . . . . . . . . . . . . . 120
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Sett ings . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Aud i Serv ice Repair Ma nuals and Literature 383
Aud i side assist . . . . . . . . . . . . . . . . . . . . . . . 128
Aud i smartphone interface . . . . . . . . . 246, 250
Aud i virt ua l cockp it
refer to Instr ume nt cl uster . . . . . . . . . . . . . 10
AUTO Automatic headlights . . . . . . . . . . . . . . . . . 54
Auto Lock (centra l locki ng system) . . . . . . . . 37
Automatic belt ret ractor . . . . . . . . . . . . . . . 266
Automatic climate control . . . . . . . . . . . . . . . 76
Aud i drive select. . . . . . . . . . . . . . . . . . . . . 134
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Automatic climate control system Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Automatic transm ission . . . . . . . . . . . . . . . . . 9 1
E me rgency prog ram . . . . . . . . . . . . . . . . . . 96
Hill descent contro l . . . . . . . . . . . . . . . . . . . 94
Kick -down . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Launch control program . . . . . . . . . . . . . . . 95
Manual sh ift ing . . . . . . . . . . . . . . . . . . . . . . 94
Parking lock emergency re lease . . . . . . . . . 97
Selector lever pos itions . . . . . . . . . . . . . . . . 91
Automatic wipe/wash system . . . . . . . . . . . . 60
Auto Safety Hotline . . . . . . . . . . . . . . . . . . . 26 1
AUTO (button) Automatic climate control . . . . . . . . . . . . . . 78
Auxiliary heater (automatic climate control) 79
AUX input . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Average consumption . . . . . . . . . . . . . . . . . . . 17
Ave rage spee d . . . . . . . . . . . . . . . . . . . . . . . . 17
B
BACK button . . . . . . . . . . . . . . . . . . . . . . . . . 155
Balance (sound) . . . . . . . . . . . . . . . . . . . . . . 252
Bass (sound) . . . . . . . . . . . . . . . . . . . . . . . . . 252
Ba tte ry
J u mp starting . . . . . . . . . . . . . . . . . . . . . . . 374
also refer to Veh icle bat tery . . . . . . . . . . . 33 1
Before driving . . . . . . . . . . . . . . . . . . . . . . . . 254
Belt tensione rs . . . . . . . . . . . . . . . . . . . . . . . 269
Blended gasoline . . . . . . . . . . . . . . . . . . . . . 315
Blower (automatic cl imate control) . . . . . . . . 78
388
B luetoot h
Audio player . . . . . . . . . . . . . . . . . . . . . . . . 230
Connect ing a cell phone . . . . . . . . . . . . . . 175
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . 2SO
Boost...... .. .. .. .. .. ............. ... 11
Booster seats . . . . . . . . . . . . . . . . . . . . . . . . 305
Boost pressure indicator . . . . . . . . . . . . . . . . 11
B rake fl uid
Check ing the b rake fluid level . . . . . . . . . . 330
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Brake ass ist . . . . . . . . . . . . . . . . . . . . . . . . 146
B rake fl uid . . . . . . . . . . . . . . . . . . . . . . . . . 330
El ec trome chanical parking b rake . . . . . . . . 88
E mergency b raking function . . . . . . . . . . . . 88
New brake pads . . . . . . . . . . . . . . . . . . . . . 149
Worn brake pads . . . . . . . . . . . . . . . . . . . . . 33
Breaking in New bra ke pads . . . . . . . . . . . . . . . . . . . . . 149
New engine . . . . . . . . . . . . . . . . . . . . . . . . . 80
New t ires . . . . . . . . . . . . . . . . . . . . . . . . . . 3 41
Browser
refer to M edia center . . . . . . . . . . . . . . . . . 237
Bu lbs ............................... 373
Buttons Cont ro l panel (M MI) . . . . . . . . . . . . . . . . . 155
Multifunctio n steering whee l . . . . . . . . 13, 16
P rogramming (multifunction steering
whee l) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
C
Cable ( USB adapter/AUX connector cab le) 233
Californ ia Pr opos ition 65 Wa rning . . . . . . . 3 24
Battery specific . . . . . . . . . . . . . . . . . . . . . 331
Call list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Call options . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Capacities AdBl ue ... .. .. .. .. .. ... .......... .. 319
Fuel t ank . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
Washer fluid reservoir . . . . . . . . . . . . . . . . 381
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
Cargo area
refer to Loading the luggage compart-
ment .............................. 259
C atalytic converter . . . . . . . . . . . . . . . . . . . . 322
CD d rive (med ia d rives) . . . . . . . . . . . . . . . . 229