2013 AUDI A4 SEDAN brake fluid

14 Instrum ent s and w arn ing /indic ato r light s
Engine cooling system Tire pressure monitor ing
¢ page 18
system,/
¢page249
Steering column lock Tire pressure monitoring system
¢ page 18
1181~1 ¢page249
Ignition lock
Im
Electronic power cont ro l ,/
r:::;,page 18
c:>page20
U SA mod els:
•
Malfunction indicator Lamp
Speed warning system (MIL),/
r:::;, page 79
c:> page 20
Canada models :
•
Engine speed limitation
Speed warning system c:>page 21
r:::;,page 79
Engine oil level
Aud i adapt ive cru ise control./
•
c:>page 17
¢ page 100
•
Engine o il sensor
Yellow indic ato r lights c:> page 21
Yellow symbols indicate a priority 2 ma lfunc-
-
&1
Battery
tion -Warning!
c:>page 17
Jj]
Electron ic Stabilization Control
Ill
Tank system
(ESC) ,/
c:>page 21
r:::;, page 19
-Electronic Stabilization Control
•
Warm up engine *
ti
(ESC) ./ c:>
page 211
r:::;, page 19
•
Windshie ld washer fluid level
U SA m odel s: c:>page 21
~
Anti-lock braking system (ABS)
defective ,/
m
Windshield wipers
r:::;, page 19 c:>page
21
Canada models :
le
Remote control key
[I]
Anti-lock braking system (ABS)
c:>page 75
defective ,/
r:::;, page 19
I!
Battery in remote control key
USA models: c:>page 34
I
Safety systems ,/ --
l:J
Defective light bulb warning ' r:::;, page 20
c:>page 21
Canada models :
El
Safety systems ,/
•
Fog lights
<=>page20 c:>
page 21
•
Worn brake pads
E
Rear fog light(s)*
<=> page 20
c:>page 21
•
Electromechanical parking brake
II
Headlight range control *
<=>page
77 c:> page 22

Instrument s and warnin g/indic ator ligh ts 15
ml
adaptive light *
¢page22
m
Light-/rain sensor*
¢page22
-
B
Adaptive dampers*
¢page 22
Ill
Sport differential *
¢page22
m
Ignition lock
¢page 23
Ill
Steering column lock
¢page 18
,1,ij
Electromechanical steering, dy-
namic steering*./
¢page 188
Transmission
g
-multitronic®, tiptronic
¢page88
- S tronic® ¢ page 95
m
Transmission
-S t ro nic ® ¢ page 95
Other indicator l ight s
11
1!11 Turn signals
llfa ¢page23
CRUISE
•
I
•
USA models: Cruise control
¢page81
Canada models : Cruise control
¢page 81
Audi adaptive cruise control *
¢page 100
Audi adaptive cru ise control *
¢page 100
-High beam
¢page45
BRAKE /((J)) Brake system
The ligh t illum ina tes when the ignition is
sw itche d on.
It goes out a fter the eng ine has been started. This
indicates that the b rake
warning light is functioning properly.
If th e brake warning light doe s not light up
when the engine is cranking, th ere may be a
malfunction in the electrical system . In thi s
case, contact your Audi dealer .
If the brake system wa rn ing/ indica tor light
t u rns o n, there is a b ra ke sys tem ma lfunction .
1111 (USA model s)/. (Canada model s)
Stop v ehicl e and check brake fluid lev el
If the indicator l ight turns on and the mes­
sage appears , proceed as follows:
.,. Pull off the road.
.,. Stop the vehicle.
.,. Tu rn off the engine.
.,. Check the b rake fluid level¢
page 224.
.,. Contact your nearest autho rized repair fa-
cility if necessa ry.
Warning! Fault in brake system . Contact
d ealer
If the ABS indicator light fl!S (USA models)/
(11 (Canada mode ls), the ESC ind icator light
Ji1 and the b rake system indicator light
1111 (U SA mode ls)/ . (Canada mode ls) turn
o n and the message appears, the ABS, ESC
and braking d is tribut ion are not worki ng ¢ ,&. .
Carefully drive to your author ized Audi dealer
immediately to have the malfunct ion correct­
ed ¢,&. .
1111 (USA models )/. (Canada models)
Parking brake system fault! See owner' s
manual
- If the ind icator light and the message ap­
pear
when stationary or after switch ing the
ignition on ,
check if you can release the
park ing brake . Afte r releasing the parki ng
brake, carefully d rive to your au thor ized
Audi dea le r i mmedia tely t o have the ma l­
fu nction corre cted. If yo u can not release the
parking brake, see k professiona l assistance .
-If the ind icator light and the message ap-
pea r
while driving , th e e mergen cy b ra ki ng
fu nction may not be avail able.
It may not be .,..

16 Instrum ent s and w arn ing /indic ato r light s
possible to set the parking brake or release
it once it has been set. Seek professional as ­
s istance .
(USA models): If the warning light
1111 and
the warning light
liJ appear together, imme­
diate ly contact your authorized Audi dealer or
qua lified workshop to have all brake pads in­
spected
¢ page 20.
When the light comes on, an audib le warning
signal is also given .
A WARNING
-Always observe the warnings in
¢ page 208, Engine compartment, be­
fore opening the hood and checking the brake flu id .
- Driv ing with low brake fluid is a safety
hazard. Stop the car and get professional
assistance.
- USA models: If the 1111 warn ing light,
the
G1 warning light and the m;B warn­
ing light come on together, the rear
wheels co uld lock up first unde r hard
braking. Rear wheel lock-up can cause
loss of vehicle con tro l an d an accident .
Have your vehicle repai red immedia tely
by your aut ho rized Audi dea le r or a quali ­
fied workshop. Drive slowly and avoid sudden, hard brake applications.
- Canada models: If the brake warn ing
light ., the
DJ warning light and the
ABS warning light
BJ come on together,
the rear wheels could lock up first unde r
hard braking. Rear wheel lock-up can
cause loss of vehicle control and an acc i­
dent . Have yo ur vehicle repaired immed i­
ately by your authori zed A udi dealer or a
qu alifie d wo rkshop. Dr ive slowly and
avo id su dden, hard brake appli cat ions.
- If the brake warning/indicator light does
no t go out afte r a few se con ds and the
par king brake is released, or lights up
whi le you are driving, the fluid level in
the brake f luid reservoir is too low. If you
believe that it is safe to do so, proceed
immediately at low speed to the nearest
authorized Audi dealer or qualified repair facility and have the brake system in­
spected.
- Always keep in mind that after severa l
brake applications, you will need greater
pressure on the brake pedal to stop your
veh icle. Do not rely on strained brakes to
respond with max imum stopping power
in critical s ituations . You must allow for
increased braking distances. The extra
d istance used up by fading bra kes could
le ad to an ac cident.
:l~/(®) Electromechanical parking brake
The warning/indicator light monitors the
electromechanical parking brake .
If the indicator light. (USA models)/ .
(Canada models) turns on, the pa rking brake
was set. If the parking brake is set when the
ignition is off, the ind icator light turns off af­
ter abo ut 20 seconds.
The wa rning/i ndicator lig ht will go out when
the pa rking brake is re leased .
• (USA models ) /. (Can ada model s) Cau­
tion: Vehicle parked too ste ep
If the indicator light b links and the message
appears, there is not enough braking power to
keep the vehicle from roll ing . The brakes have
overheated . The veh icle cou ld roll away eve n
o n a sma ll incline .
Press brake pedal to release parking bra ke
To re lease the parking brake, press the brake
pedal and press t he button(® or start driving
with starting assist at the same time
¢ page 78.
Please relea se park ing brake
T o re lease the par king b rake manually , p ress
t h e b rake peda l and press the button{®) at
the same time. The pa rking brake on ly releas­
es automatically if the driver's safety be lt is
fastened.
Ill Parking brake!
If the 11,1 indicator light turns on and t his
message appears, the re is a parki ng b rake

Braking
What affects braking efficiency?
New brake pads
During the first 250 miles (400 km), new
brake pads do not possess their full braking
effect, they have to be "broken in" first¢& .
You can compensate for this slightly reduced braking power by pushing harder on the brake
pedal. Avoid heavy braking loads during the
break-in per iod.
Operating conditions and driv ing habits
The brakes on today's automobi les are sti ll
subject to wear, depending largely on operat ­
ing conditions and driving habits¢.&. . On
vehicles that are e ither driven mostly in stop­
and-go city traffic or are driven hard, the
brake pads should be checked by your author­
ized Audi dealer more often than specified in
the
Warranty & Maintenance booklet . Failure
to have your b rake pads inspected can result
in red uced brake performance.
On steep slopes, you shou ld use the brak ing
effect of the engine. This way, you p revent un­
necessary wear on the brake system.
If you
must use yo ur brakes, do not hold the brakes
down continuously. Pump the brakes at inter­
va ls.
Operating noise
Noises may occur when braking depending on
the speed, braking force and outside condi­
tions such as temperature and humidity.
Effect of water and road salt
In certain situat ions, for example after driving
through water, in heavy ra in, after overnight
condensation or after washing your car, the
braking effect can be reduced by moisture or
ice on the brake roto rs and brake pads . The
brakes must be dried first with a few careful
brake applications .
A t hi gher speeds and with the windshield w ip­
ers turned on, the brake pads press against
the brake rotors for a short amount of time .
This occurs at regular intervals without the
Intelligent technology 187
driver noticing and provides for better brake
response time under wet conditions .
T he effectiveness of the brakes can be red uced
when the vehicle is driven on a sa lt-co vered
road and the b rakes are not used. Likewise,
you clean off accumulated salt coating from
brake discs and pads with a few cautious ap­
plications of the brake ¢ & .
Corrosion
There may be a tendency for dirt to build up
on the brake pads and corrosion to form on
the discs if the car is not driven regu larly or
on ly for short trips with litt le use of the
brakes.
If the brakes are not used frequently, or if cor ­
rosion has formed on the discs, it is advisable
to clean off the pads and discs by braking
firmly a few times from a moderately high
speed ¢.&. .
Faults in the brake system
If you should notice a sudden increase in
brake pedal trave l, then one of the two brake
c ircuits may have failed ¢.&. .
Low brake fluid level
Malfunctions can occur in the brake system if
the brake fluid level is too low. The brake fluid
level is monitored electronica lly.
Brake booster
T he brake booster increases the pressure that
you generate with the brake peda l. It works
only when the engine is runn ing .¢ .&.
Brake lining wear status
Brake lining wear may be checked by visual in­
spection of the condition of the brake pads
through the openings in the wheel. If neces­
sary, the wheel may be removed fo r this in­
spection ¢
page 252, Changing a wheel .
A WARNING
-
- New brake pads don't have the best stop­
ping power and must be "broken-in" dur-
ing the initial 100 to 150 miles (150 to
~
•
•

196 Trailer towing
Trailer towing Driving with a trailer
General information
Your Audi was designed primarily for passen­
ger transportation .
If you plan to tow a trai ler, p lease remember
that the additional load will affect durability,
economy and performance .
Trailer towing not on ly places more stress on
the vehicle, it also calls for more concentra­
tion from the driver.
For this reason, always fo llow 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 suita­
ble for your vehicle and trailer and must be
mounted securely on the veh icle's chassis at a
technically sound location. Use only a trailer
hitch with a removable ball mount. Always
check with the trailer 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-absorb­
ing bumper system . No modifications should
be made to the vehicle exhaust and brake sys­
tems . From time to time, check that all hitch
mounting bolts remain securely fastened.
When you are not towing a trailer, remove the
trailer hitch ball mount. This prevents the
hitch from causing damage should your vehi­
cle be struck from behind
¢ A.
Trailer brakes
If your tra iler is equipped with a braking sys­
tem, check to be sure that it conforms to a ll
regulations . The trailer
hydraulic brake system must not be
direct ly connected to the vehicle's hydraulic
brake system
~ A.
Safety chains
Always use safety chains between your vehicle
and the trai le r.
Trailer lights
T railer lights must meet all regulations. Be
sure to check w ith your authorized Audi dealer
for correct wiring, sw itches, and relays.
Mirrors
If you are unable to see the traffic behind you
using the regular outside mirrors, then you
must install extended mirrors . It is important
that you
always have clear vis io n to the rear.
,8. WARNING
- If a trailer has electrical brakes please
note that these brakes are not activated
by the factory-fitted control unit -risk of
accident!
- Afte r removing the trailer 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 tra iler.
Trailer load distribution Be sure the load in the trailer is held secure ly
in place to prevent it from shifting forward,
backward or sideways.
Never allow a passenger to ride in a trailer
¢ A in Driving instructions on page 197.
Engine cooling system
T owing a trailer makes the engine work hard ­
er. It is important that the cooling system's
performance is up to the additional load.
Make sure that the cooling system has enough
fluid . .,..

Cleaning and protect ion
General information
Regular core preserves vehicle value.
Any automobile is exposed to industrial
fumes , corrosive road salt, etc. A well cared
for Audi can look like new many years after
purchase . Regular and correct care w ill con­
tr ibute to maintaining the beauty and value of
your Aud i.
Furthermore, good care may be a condition
for substantiating a warranty claim should
corrosion damage or paint defects occur.
Your authorized Audi dealer has a variety of
dedicated vehicle-care products and can ad­
vise which ones to use for cleaning the exter i­
or and interior of your vehicle.
Whether you use products recommended by
Audi or other commercially available cleaning
agents, please make sure you apply them cor­
rectly .
.&, WARNING
-Cleaning agents may be poisonous. Keep
them out of the reach of children.
- Heed all caution labels.
- Always read directions on the container
before using any product. Follow the di­
rect ions carefully.
- Most chemical cleaners are concentrated
and have to be diluted .
- Use spot removing fluids only in well
ventilated areas.
- Do not use gasoline, kerosene, d iesel
fuel, nail polish remover or other volatile
fluids. They may be toxic, flammab le or
haza rdous in other ways. Do not wash,
wax or dry the vehicle with the ignition
on or the engine running.
- Do not clean the undersides of chassis,
fenders, wheel covers, e tc. without pro­
tecting your hands and arms. You may cut yourself on sharp-edged metal parts.
Cleaning and protection 199
-Moisture and ice on brakes may impair
brak ing effic iency¢
page 187. Test the
brakes carefully each time you wash the
veh icle.
@) For the sake of the environment
Select on ly environmentally friend ly clean­
i ng products . Leftover cleaning products
should not d isposed of in the household
waste.
Care of exterior
Washing
Frequent washing protects the vehicle .
The best protection against environmental i n­
fluences is
frequent washing and waxing . How
often th is is required depends on:
- How much the veh icle is used
- Where the veh icle is parked (garage, in the
open under trees, etc.)
- The seasonal and weather conditions
- Environmental influences
T he longer b ird droppings, insects, tree resin,
road and indus trial gr ime, tar, soot, road salt
and other materials remain on the vehicle
body, the more lasting their destructive ef­
fects will be . High temperatures caused by ex­
posure to intense sun light intens ify the corro­
sive effect, particularly when humid ity is high
as well.
Under certain circumstances,
weekly washing
may be necessary. Under other cond itions, a
monthly washing and waxing may be ade­
quate .
After the winter, the underside of the vehicle
should be thoroughly washed, preferab ly in a
professional car wash .
.&, WARNING ,_
Always read and heed all WARNINGS and
other information¢
page 199 .
•
•

216 Checking and filling
-Apply the parking brake.
- Move selector lever of automatic trans- mission to "P" (Park); put manual trans­
mission in Neutral.
- Always let the engine cool down. Hot
components will burn skin on contact.
- To reduce the risk of being burned, never
open the hood if you see or hear steam
or coolant escaping from the engine
compartment . Wait until no steam or
coolant can be seen or heard before care­
fully opening the hood .
- Keep children away from the engine com­
partment .
- Never spill fluids on hot engine compo­
nents. They can cause a fire.
- Never touch the radiator fan. The auxili­ ary electric fan is temperature controlled
and can switch on suddenly.
- Never open the coolant reservoir cap when the engine is still warm. The cool­
ant system is pressurized and hot cool­
ant could spray out .
-Protect your face, hands and arm from
steam or hot engine coolant by placing a
thick rag over the cap when you open the coolant reservoir .
- Do not remove the engine cover under
any circumstances. This increases the
risk of burns.
- If work on the fuel system or the electri­
cal system is necessary:
- Always disconnect the battery .
- Never smoke or work near heaters or
open flames. Fluids in the engine com­
partment could start a fire.
- Keep an approved fire extinguisher im­
mediately available.
- To avoid electrical shock and personal in­
jury while the engine is running or being
started, never touch:
- Ignition cables
- Other components of the high voltage
electronic ignition system.
- If you must perform a check or repair with the engine running: -
First, fully apply the parking brake,
move selector lever of automatic trans­
mission to "P" (Park); put manual
transmission in Neutral.
- Always use extreme caution to prevent
clothing, jewelry, or long hair from get­
ting caught in the radiator fan, V-belts
or other moving parts, or from contact­ ing hot parts. Tie back hair before
starting, and do not wear clothing that
will hang or droop into the engine.
- Minimize exposure to emission and
chemical hazards~&, .
.&_ WARNING
California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain
or emit chemicals known to the State of
California to cause cancer and birth de­
fects and reproductive harm. In addition, certain fluids contained in vehicles and
certain products of component wear con­
tain or emit chemicals known to the
State of California to cause cancer and
birth defects or other reproductive harm.
- Battery posts, terminals and related ac­
cessories contain lead and lead com­
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive harms. Wash hands after handling.
(D Note
When adding fluids, always make sure that
they are poured into the proper container
or filler opening, otherwise serious dam­
age to vehicle systems will occur.
@ For the sake of the environment
To detect leaks in time, inspect the vehicle
floor pan from underneath regularly . If
you see spots from oil or other vehicle flu­ ids, have your vehicle inspected by an au­
thorized Audi dealer.

224 Checking and filling
scalding from hot coolant by following
these steps.
- Turn off the eng ine and a llow it to cool
down.
- Protect your face, hands and arms from escaping flu id and steam by cover ing
the cap with a large, thick rag.
- Turn the cap slowly and very carefully
i n a counter-clockwise direction while
apply ing l ight, downwa rd p ress ure on
the top of the cap .
- To avo id being burned, do not sp ill an­
tifreeze or coolant on the exhaust sys­
tem or hot engine parts . Under certain
conditions, the ethylene glyco l in en­
gine coolant can catch f ire .
- Antifreeze is poisonous . Always store an­
tifreeze in its or iginal container and we ll
out of the reach of children .
- If you drain the coolant, it must be
caught and safely stored in a proper con­
tainer clear ly marked "poison".
@ Note
- Coolant po llutes the env ironment and
could cause an engine fire . Excess coo l­
ant will be forced out through the pres­
sure relief valve in the cap when the en­
gine becomes hot.
- If, in an emergency, on ly water can be
added, the correct ratio between water
and antifreeze
c::> page 222 must be re­
stored as soon as possible .
@ For the sake of the environment
Drained coolant should not be re used. Al­
ways dispose of used coolant while observ­
ing all environmental regulat ions.
Radiator fan
The radiator fan switches on automatically by
itself
The radiator fan is driven by the engine via the
V-be lt . The viscous clutch regulates the speed
of the fan according to the temperature of the
coolant. An a
uxiliary electric radiator fan* switches on
and off depending on coolant temperature
and other vehicle operat ing condit ions .
After yo u sw itch the engine off, the aux iliary
f an can continue running for up to 10 minutes
- eve n wit h the ignition off. It can even switc h
on again later by itself
c::> &. , if
- t he tempe rature of the engine coo lant rises
due to the heat build -up from the engine in
the engine compartment, or
- the engine compa rtment heats up because
the vehicle is parked in i ntense sunlight.
_& WARNING
- To reduce the risk of personal in jury nev­
er touch the radiator fan.
- The auxiliary electric fan is temperat ure
controlled and can sw itch on suddenly
even when the engine is not running.
- The a uxiliary radiator fan sw itches on a u­
tomatically when the engine coo lant
reaches a certai n temperature and will
continue to run until the coolant temper­
ature drops.
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
F ig . 17 1 Eng ine compartment: Cover on the brake flu­
i d reservo ir
Before you check a nyth ing in the engine com­
partment,
always read and h eed all WARN ­
INGS c::> .&. in Working in the engine compart-
ment on page 215. .,..