2018 AUDI A4 brake fluid

Table of content s
Media ... . ... ... .. .. ..... ... .. .. ...
227
Introduction . . . . . . . . . . . . . . . . . . . . . . . . 227
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Media drives . . . . . . . . . . . . . . . . . . . . . . . . 228
Bluetooth audio player . . . . . . . . . . . . . . . 230
W i- F i aud io player . . . . . . . . . . . . . . . . . . . 231
O nline med ia and Internet radio . . . . . . . . 232
Mu ltimedia connect io ns . . . . . . . . . . . . . . 233
P lay ing media . . . . . . . . . . . . . . . . . . . . . . . 236
Addit io nal sett ings . . . . . . . . . . . . . . . . . . 239
Supporte d media and file formats . . . . . . 242
Troubleshooting . . . . . . . . . . . . . . . . . . . . . 243
Audi smartphone interface ...... 246
Se tup ... .. .... ... . ...... ... .. .. ... 246
Operating . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Troubleshoot ing . . . . . . . . . . . . . . . . . . . . . 24 7
System settings . . . . . . . . . . . . . . . . . . 248
Setting the date and time . . . . . . . . . . . . . 248
MMI sett ings . . . . . . . . . . . . . . . . . . . . . . . 248
Connection manager . . . . . . . . . . . . . . . . . 249
System update . . . . . . . . . . . . . . . . . . . . . . 251
Sound settings . . . . . . . . . . . . . . . . . . . . . . 252
Volume sett ings . . . . . . . . . . . . . . . . . . . . . 252
Restart ing the M MI . . . . . . . . . . . . . . . . . . 253
Sof twa re license i nfo rm at ion 253
Safety first . . . . . . . . . . . . . . . . . . . . . . . 2 54
Driving safety . . . . . . . . . . . . . . . . . . . . 254
B asics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
Correct passenger se ating positions . . . . . 255
D river's and front passenger 's footwell . . 2S8
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Storing cargo correctly . . . . . . . . . . . . . . . 259
Reporting Safety Defects . . . . . . . . . . . . . . 261
Safety belts . . . . . . . . . . . . . . . . . . . . . . 263
Gene ral information . . . . . . . . . . . . . . . . . 263
Why use safety belts? . . . . . . . . . . . . . . . . 264
Safety belts . . . . . . . . . . . . . . . . . . . . . . . . 266
Belt tensioners . . . . . . . . . . . . . . . . . . . . . . 269
Airbag system .................... 271
Important information . . . . . . . . . . . . . . . 27 1
Front airbags ....................... 275
M on itor ing the Advan ced Airbag System . 283
Knee airbags . . . . . . . . . . . . . . . . . . . . . . . . 28 7
4
Side a irbags . . . . . . . . . . . . . . . . . . . . . . . . 289
Side curtain airbags . . . . . . . . . . . . . . . . . . 292
Child safety . . . . . . . . . . . . . . . . . . . . . . 295
Important information . . . . . . . . . . . . . . . 295
Child safety seats . . . . . . . . . . . . . . . . . . . . 301
Securing child safety seats . . . . . . . . . . . . 306
LATCH system (lower anchorages and
tethers for c hildren) . . . . . . . . . . . . . . . . . 309
Additional informat ion . . . . . . . . . . . . . . . 314
Maintenan ce and Care ........... 31S
Checking and Filling . . . . . . . . . . . . . 31S
Gasoline ........................... 315
D iesel fue l . . . . . . . . . . . . . . . . . . . . . . . . . 316
Refueling . . . . . . . . . . . . . . . . . . . . . . . . . . 31 7
Se lective cata lytic red uction (AdBlue/
DE F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 19
Emissions control systems . . . . . . . . . . . . 322
Engine compartment . . . . . . . . . . . . . . . . . 323
Engine o il . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Cooling system . . . . . . . . . . . . . . . . . . . . . . 329
Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . 330
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Windshie ld washer system . . . . . . . . . . . . 332
Se rvice interva l display 333
Wheels ........ ................ ... 334
Whee ls and Tires . . . . . . . . . . . . . . . . . . . . 334
T ire p ressure mo nitoring system 351
Care and cleaning . . . . . . . . . . . . . . . . 354
Genera l information . . . . . . . . . . . . . . . . . 354
Car w ash es . . . . . . . . . . . . . . . . . . . . . . . . . 35 4
Cleaning an d care information . . . . . . . . . 355
Placing your vehicle out of service . . . . . . 3 59
Do It Yourself ... .. .. ........... .. 3 60
Emergency as sistance . . . . . . . . . . . 360
Genera l information . . . . . . . . . . . . . . . . . 360
Eq uipment . . . . . . . . . . . . . . . . . . . . . . . . . 360
Tire mobility kit . . . . . . . . . . . . . . . . . . . . . 361
Replacing a whee l . . . . . . . . . . . . . . . . . . . 363
Space-sav ing spare t ire . . . . . . . . . . . . . . . 367
Collaps ible spa re ti re . . . . . . . . . . . . . . . . . 367

Cockpit over view
28
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Adapt ive cruise control*
¢ page 112, ¢page 115
Adapt ive cruise control*
¢ page 115
Traffic jam assist*
¢page 116
Active lane assist*
¢page 126
Predictive efficiency assist*
¢page 107
USA model s:
Predictive efficiency assist*
¢page 107
Canada mod els:
P redictive efficiency assist*
¢ page 107
Predictive efficiency assist*
¢page 107
Predictive efficiency assist*
¢page 107
Predictive efficiency assist*
E!)page 107
Hill descent assist*
¢page 148
Start/S top system *
¢page85
Start/Stop system*
¢ page 85
Remote cont rol key
¢ page85
Ad B lue *
¢page319
Automatic transm ission*
¢ page96
Dynamic steering"
¢page 150
Adapt ive cr uise control*
¢ page 112,
Traffic jam assist*
¢ page 118
Traffic jam assist *
¢page 118
D AUTO
Audi pre sense *
¢page 124
USA models:
Electromechanical parking brake
¢ page 29
Canad a models:
Electromechanical parking brake
¢ page29
Hill descent assist*
¢page 148
Child safety lock
¢ page48
USA models:
Speed warning system*
¢ page 102
Canada model s:
Speed warning system*
¢ page 102
Active lane assis t*
¢ page 126
Audi s ide assist*
¢ page 133
Camera-based traff ic sign recog ni­
tion*
High beam ass istant*
¢ page 55
High beams
¢ page 55,
High beam ass istant*
¢ page 55
BRAKE /CCD) Brake system
If this indicato r light turns on, t here is a malf unc­
t ion in the b rake system .
1111 (USA model s) /. (Canada model s)
Brakes : stop vehicle and chec k brake fluid level
Stop the vehicle and check the brake flu id leve l.
See an author ized Audi dealer or authorized Audi
Service Facility for assis tance if necessary .
1111 (USA models ) /. (Can ada model s)
Brakes : malfunction! Stop veh icle safely
..,.

If the indicator light turns on and this message
appears, there is a malfunction in the brake booster.
I f the ABS indicato r light
[I]) (USA mode ls) I
ti] (Canada mode ls), the ESC indicator light J.ft .
and the brake system indicator light 1111 (USA
models)
I . (Canada mode ls) all turn on and
this message appears, then the ABS, ESC and
braking distribution are malfunctioning
c::> ,&. .
Do not continue driving . See an authorized Audi
dea ler or authorized Aud i Serv ice Facility for as­
sistance
c::> ,&. .
1111 (USA model s) /. (C anada mod els ) Pa rk­
ing brake: malfun ction! Safel y stop vehicle . See
owner 's manu al
- If the indicator ligh t and the message appea r
when the vehicl e is stationar y or afte r switch­
ing the ignit ion on ,
check if you can release the
park ing brake. If you cannot re lease the park­
ing brake, see an authorized Aud i dealer or au­
thorized Aud i Serv ice Facility. If you can release
the parking brake and the message still ap­
pears, see an authorized Aud i deale r or author­
ized Audi Service Facility immediately to have
the malfunction correc ted.
- If the indicator light and message appea r
whil e
dri ving ,
the hill start assist or emergency brak­
ing function may be malfunctioning. It may not
be poss ible to set the pa rking brake or release
i t once it has bee n se t. Do not park your veh icle
on h ills. See an authorized Audi dealer or au­
thorized Aud i Service Facility for ass istance.
Brake boo ste r: re stricted . You can c ontinue driv ­
in g. Ple ase co ntact Servic e
There is a malfunction in the brake booster. The
brake booster is availab le, but its effectiveness is
reduced. B raking behavio r may be diffe rent from
how it normally fu nctions and the b rake peda l
may v ibrate.
Drive to an authorized Aud i dealer or authorized
Aud i Service Faci lity immediately to have the
a malfunct ion corrected. co .... N ,....
N .... 0 0
3 co
Coc kpit o ve rv iew
A WARNING
-Read and follow the warnings in
c::> page 323, Working in the engine com­
partment before opening the hood and
checking the brake fluid level.
- If the brake system indicator light does not turn off or it turns on wh ile driving, the
b rake fl uid leve l in the reservo ir is too low,
and this increases the risk of an accident.
S top the vehicle and do not continue d riv­
ing . See an authorized Aud i dealer o r au­
thorized Audi Service Facility for assistance.
- I f the brake system indi cator light turns on
together with the ABS and ESC indicato r
lights, the ABS/ESC regu lating function may
be malfunct ion ing. Funct ions that stabilize
the vehicle are no longer available. This
could cause the vehicle to swerve, which in­
creases the risk that the vehicle will slide. Do not cont inue driving. See an autho rized
Aud i deale r o r autho rized Audi Serv ice Facili­
ty fo r ass is tance.
PARK /(®)/~ Electrom echanical parking
b rake
If the -(U SA mode ls) I. (Canada models)
indicator light turns on, the parking brake was
set.
If the -( U SA mode ls) . (Canada models) in­
dicator light blinks, the braking force is not build ­
ing up enough o r not building up at a ll. Secu re
the vehicle also by selecting the 1st gear (man ual
transm ission) or select ing the P selector lever po­
s ition (automatic transm ission) . Make sure the
indicator light is off before you start driving.
l~j Parking brake : malf unction! Please contact
Ser vic e
There is a ma lfunction in the parking brake. Drive
to an autho rized Audi dealer or authorized Audi
Service Facility immed iate ly to have the malfunc­
t ion corrected.
11 ( USA model s)/ ,1~a (Can ada models) Parking
brake: caution! Vehicle parked too steep
29

a co .... N ,....
N .... 0 0
3 co
Trailer towing Driving with a trailer
General information
Your Audi was designed primarily for passenger
transportation .
If you plan to tow a trailer, please remember that
the additional load will affect durability, econo­ my and performance.
Trailer towing not only places more stress on the
vehicle, it also calls for more concentration from
the driver.
For this reason, always follow the operating and
driving instructions provided and use common
sense.
Technical requirements
Trailer hitch
Use a weight-carrying hitch conforming to the
gross trailer weight. The hitch must be suitable
for your vehicle and trailer and must be mounted
securely on the vehicle's chassis at a technically
sound
location . Use only a trailer hitch with a re­
movable ball mount . Always check with the trail­
er hitch manufacturer to make sure that you are
using the correct hitch.
Do not use a bumper hitch.
The hitch must be installed in such a way that it
does not interfere with the impact -absorbing
bumper system. No modifications should be
made to the vehicle exhaust and brake systems .
From time to time, check that all hitch mounting
bo lts remain securely fastened.
When you are not towing a trailer,
remove the
tra iler hitch ball mount . This prevents the hitch
from causing damage shou ld your vehicle be
struck from beh ind ¢
,&. .
Trailer brakes
If your trailer is equipped with a braking system,
check to be sure that it conforms to all regula­
tions .
Trailer towing
The trailer hydraulic brake system must not be
directly connected to the vehicle's hydraulic
brake
system ¢.&. .
Safety chains
Always use safety chains between your vehicle
and the trailer.
Trailer lights
T ra iler lights must meet all regulations . Be sure
to check w ith your author ized Audi dealer for cor­
rect wiring, switches and relays.
Mirrors
If you are unable to see the traffic behind you us­
ing the regular outside mirrors, then you
must in­
stall extended mirrors. It is important that you
always have clear vision to the rear.
,8. WARNING
After removing the traile r hitch, do not store
it in your vehicle. In case of sudden braking,
the hitch could fly forward and injure you or
your passengers.
Operating instructions
Maximum trailer weight
A trailer for your vehicle is limited to a typical
class 1 or class 2 trailer.
Trailer load distribution
Be sure the load in the trailer is held securely in
place to prevent it from shifting forward, back­
ward or sideways.
Never allow a passenger to ride in a trailer ¢.&.
in Driver messages on page 100 .
Engine cooling system
Towing a trailer makes the engine work harder. It
is important that the cooling system's perform ­
ance is up to the additional load. Make sure that
the cooling system has enough fluid.
Tire pressure
When towing a trailer, inflate the tires of your
vehicle to the tire pressure listed under "Full
load" on the label ¢ page 344. Inflate trailer
99

a co .... N ..... N .... 0 0
3 co
-the LED in the button turns on
-the vehicle speed is lower than 19 mph (30 km/
h)
-the h ill angle is at least app rox imately 6%
_& WARNING
-Always adapt yo ur speed to the weather,
road and traffic conditions. Do not let the
increased safety provided tempt you into
tak ing risks, because this increases the risk
of an accident.
-
-T he hill descent assist system cannot over­
come the laws of physics. Your driving style
must a lways be adapted to the current road
and traffic conditions.
- Hill descent assist may not be able to hold your vehicle at a constant speed under a ll
condit ions while driving on a hill (for exam­
ple if ground under the veh icle is loose) .
Brakes
New brake p ads
New brake pads do not ach ieve the ir full braking
effect during the first 250 mi (400 km). They
must be "broken
in" first. However, you can com­
pensate for the slightly reduced brak ing fo rce by
p ressing firmly o n the brake pedal. Avoid heavy
b raking during t he b reak-in per iod.
Wear
B rake pad
wear depends largely on the way the
veh icle is driven a nd on operat ing cond itions.
This is especia lly true if you are d riving frequently
in t he c ity and on c urves or wi th a sporty driving
style.
Operating noise
Noises may occur when braking depend ing on the
speed, braking force and outs ide cond itions such
as temperature and humidity .
Wet conditions or road salt
In certain situations, for example after driving
through water, in heavy ra in or after washing
your car, the brak ing effect may be reduced due
to moisture or ice on the brake rotors and brake
Intellig ent Technology
pads. The brakes m ust be "dried" first with a few
carefu l brake app lications.
At higher speeds and w ith the win dshield wipe rs
tu rned on, the brake pads press agains t the b rake
roto rs fo r a short amount of time. This action,
which is not felt by the driver, happens at regu lar
i nterva ls and ensures a better reaction t ime for
the b rakes in wet weather.
T he brak ing effec t can a lso be reduced if yo u are
driving on salted roads and yo u do not app ly the
brakes for long per iods of t ime. The layer of sa lt
on the brake rotors and pads m ust be worn off
first whe n the brakes are applied.
Corrosion
Leaving the vehi cle parked for long periods o f
time, low mileage and avoiding heavy b raking
can contrib ute to corros ion on the brake rotors
and to dirty brake pads.
If you usu a lly avoid heavy bra king or if there is
corrosion present, occasiona l heavy braking at
high speeds is recommended to clean the brake
roto rs and
pads ¢~ -
Brake system malfunction
If you notice that the bra ke pedal trave l has sud­
denly increased, then a brake circuit in the dua l­
ci rcuit brake system may have malfunctioned.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immed iate ly to have the
problem corrected. On the way there, drive w ith
reduced speed and keep in mind t hat you will
need a longer distance to stop and you will need
to press the bra ke ped al ha rder.
Low brake fluid level
When the bra ke fluid level is low, malfunctions in
the brake system may occur. The brake fluid level is elec tronically monitored.
Brake booster
The brake booster ampli fies the p ressure you ap-
ply to the brake pedal.
.,..
149

-If the hood is not latched completely, it
could fly up while you are driving and ob­
struct your vision.
Engine compartment overview
The most important check points.
Checking and Filling
Fig. 268 Typical location of the reservoir a nd t he engine o il filler ope ning
(!) Washer fluid reservoir (O) c::> page 332
@ Jump start po int( +) under a cover,(-) w ith
hex head screw
¢page 332 c:>page 374
@ Engine oil filling opening ( © Engine oil label* w ith VW standard
c:> page325
® Coolant expansion tank (- L) c::> page 329
® Brake fluid reservoir ((0) c::> page 330
The location of the engine oil filling opening and
the coolant expansion tank ¢
fig. 268 (items@
and@) may differ depending on the engine ver­
sion .
_& WARNING
-Read and follow all WARNINGS before check-
in g anything in the engine compartment
c:> page 323.
Engine oil
Engine oil specifications
The engine oil used must conform to exact speci­
fications.
The service 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 oil changed by an authorized Audi Serv-
ice Advisor.
.,..
325

Checking and Filling
.,. Push the release button again and remove the
cap comp lete ly .
.,. Make sure that the fluid level rema ins stable.
Add more coolant if necessary .
.,. Turn the cap to the right to secure it until you
feel resistance a second t ime.
Coolant loss usually indicates there is a leak . Im ­
mediately drive your vehicle to an authorized
Audi dealer or authorized Audi Serv ice Facility
and have the cooling system inspected . If the
coo ling system is not leaking, a loss can come
from the coolant boiling through overheating
and being pushed out of the cool ing system.
_& WARNING
- T he coo ling system is under pressure. Do
not open the coolant expansion tank cap
when the engine is hot. This increases the
risk of burns.
- The coo lant add itive and the coolant can be
dangerous to your healt h. For this reason,
keep the coolant in the origina l container
and away from children. There is a risk of poison ing.
- When working in the engine compartment, remember that the radiator fan can switch
on even if the ign ition is switc hed off, which
increases the risk of in jury.
(D Note
Do not add coolant if the expansion tank is
empty. There may be air in the cooling sys­
tem, wh ic h increases the risk of engine dam­
age.
If th is is the case, do not continue dr iv­
ing . See an a uthorized Aud i dea le r or author­
ized Aud i Service Fa cil ity fo r assistance.
330
Brake fluid
Fig. 271 En gine compa rtment: cap o n brake fluid reservo ir
Observe the safety precautions¢.&, in Working
in the engine compartment on page 32 3 .
Check ing the brake fluid level
.,. Read the brake fluid level on the brake fluid
reservoir ¢ page 325, fig . 268 . The brake flu id
level must be between the MI N and MAX ma rk­
ings ¢.&, .
The brake f lu id level is monito red automatically.
Changing the brake fluid
Have the brake fluid changed regularly by an au­
thorized Audi dea ler or authorized Audi Service
Facility.
_& WARNING -
- If the brake flu id leve l is below the MIN
marking, it ca n impair the brak ing effect
and driving safety, wh ich increase the r isk of
an accident. Do not continue dr iv ing . See an
author ized Audi dealer or au thori zed Audi
Serv ice Facility fo r ass ist ance.
- I f the brake fl uid is old, b ubbles may form
in the bra ke system dur ing heavy bra king.
This wo uld im pair b raking per formance and
driving safety, which increases the risk of an
accident.
- To ensure the brake system functions cor­
rectly, only use bra ke fluids tha t comp ly
wit h VW standard 50 1 14 or
FMVSS- 116 DOT 4 .
(D Note
-If the bra ke f lu id leve l is ab ove the MAX
marking, bra ke fluid may le ak o ut over the

a co .... N ,....
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3 co
edge of the reservoir and result in damage
to the vehicle .
- Do not get any brake fluid on the vehicle
paint, beca use it will corrode the paint .
Battery
General warnings about batteries
Because of the complex power supply, all work
on batteries such as disconnecting, replacing,
etc. shou ld
onl y be performed by an a uthorized
Aud i dealer o r autho rized Aud i Serv ice Facility
¢ ,&. .
The term "vehicle battery" refers to the 12 Volt
battery in your veh icle.
Detailed warning s for th e vehicl e batter y:
®
Wear eye protection .
A
Battery acid is highly corrosive. Wear pro-
tective gloves and eye protect ion.
@
Fire, spa rks, open flame and smoking are
forbidden.
~
A highly explosive mixture of gases can
form when charging batteries.
®
Keep children away from battery acid and
batteries.
A WARNING
All work on the battery or electrical system in
your vehicle can result in injuries, chemical
burns, accide nts o r burns. Be cause of this, a ll
work m ust be perfo rmed
only by an a uthor­
ized Aud i deale r or a utho rized Aud i Serv ice
Facility.
_&. WARNING
California Proposition 65 Warning:
- Battery posts , termina ls and re lated acces­
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive problems.
Wash hands after handling.
Ch eck ing and Filling
(D Note
Protect the vehicle battery against freezing if
the veh icle w ill be parked for long periods of
time so that it is not destroyed by "free zing"
¢ page 332.
@ For the sa ke of the environment
i Batteries contain polluting substances such
as sulfur ic acid and lead. Contact an author­
i zed Audi dealer or authorized Audi Service
Fac ility for more informat ion .
Vehicle battery
The term "vehicle ba ttery" refers to the 12 Vol t
ba ttery in your vehicle.
Not running th e vehicle fo r long p eriod s of
time
If you do not drive your vehicle for severa l days or
weeks, electrical equ ipment is gradually scaled
back or sw itched off . Th is reduces energy use and
ensures the vehicle will be able to start after long
per iods of t ime
¢ page 151. Some convenie nce
funct ions, such as inte rio r ligh ting or power seat
adjustment, may not be ava ilable under certain
c ircumstances. These convenience functions will
be available again once you switch the ignition on
and start the engine.
Even when elect rical equipment is switched off,
the eq uipment can sti ll drain the vehicle battery
if the vehicle is not driven for long periods of
time. Deep draining results in a chemica l reaction
that destroys the inside of the vehicle battery .
The veh icle battery must be charged every month
to reduce the risk of this happening
¢ page 332 .
Contact an authorized Aud i dealer or authorized
Audi Service Facility for more information .
Winter operation
Co ld weather places higher demands on the vehi­
cle battery. Th is results in reduced starting ab ili­
ty. Have the vehicle battery checked by an au­
thorized Audi dea ler or authorized Audi Service
Facil ity before the cold time of year.
33 1