check engine AUDI A4 2015 Owner's Manual

212 Checking and filling
Checking and filling
Engine hood
Releasing and opening the engine hood
The engine hood is released from inside the
vehicle .
Fig. 180 Driver's side footwe ll: e ngin e hood release
lever
... -- - -=-
Fig. 181 Release lever u nde r the engine hood
Before opening the engine hood, make sure
that the windshield wipers are flat against the
windshield. Otherwise, they could damage the
pa int on the hood.
... With the driver's door open, pull the lever
under the instrument panel in the direction
of the arrow
c> fig . 180.
... Raise the hood slightly c> .&,
... Press the rocker switch under the hood up­
ward
c> fig . 181 . This releases the catch.
... Open the hood.
A WARNING
Hot engine coo lant can burn you.
- T o 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 coo
lant can be seen or heard before care­
fully opening the hood.
Closing the engine hood
... Pull the hood down until the pressure from
the struts is reduced .
... Let the hood
drop down and latch in place.
Do not try to push it shut; it may fail to en­
gage
c> .&, .
A WARNING
-
A hood that is not completely latched
could fly up and b lock your view while driv­
ing.
- When you close the engine hood, check it
to make sure the safety catch has proper­
ly engaged . The hood shou ld be flush
with the surrounding vehicle body parts.
-If you notice while driving that the hood
is not secured properly, stop at once and
close it.
Working in the engine compartment
Be especially careful whenever you work in
the engine compartment.
Whenever you must perform any work in the
engine compartment, for example checking
and filling different fluids , there is a risk of
injury , burns and accidents. To prevent per­
sonal injury always observe the following
WARNINGS. The engine compartment of any
vehicle is a hazardous area
c> ,&..
A WARNING
-To help avoid injury, before you check any-
thing under the hood:
- Turn off the engine.
- Remove the ignition key.
- 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 .

"" N
0 ::.,: co ,...., \!) ..,.,
,...., ..,., ,....,
-To reduce the r isk 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 ca re­
fully opening the hood .
- Keep children away from the engine com ­
partment.
- Never spill flu ids on hot engine compo­
nents. They can cause a fire .
- Never touch the radiator fan. The aux ili­
ary e lectr ic fan is temperature controlled
and can switch on suddenly .
- Never open the coolant reservoir cap
when the eng ine is still warm . The cool­
ant system is pressur ized and hot coo l­
ant could spray out.
- Protect your face, hands and arm from
steam or hot eng ine coolant by placing a
thic k rag over the cap when you open the
coolant reservoir.
- Do not remove the engine cover under
any c ircumstances. Th is increases the
risk of bu rns.
- If wo rk on the fuel system or the electri­
cal sys tem is ne cessary:
- Always disconnect the battery.
- Never smoke or work near heaters or
open flames . Fluids in the engine com­
partment co uld start a fire.
- Keep an approved fire extinguisher im­
mediately ava ilable.
- To avoid electrical s hock and persona l 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 repa ir
with the engine running:
- Fir st, fully apply the parking brake,
move se lector lever of a utomatic trans-
Checkin g and fillin g 213
mission to "P" (Park); put manual
transmission in Neutral.
- Always use extreme caution to prevent
clothing, jewe lry, or long hair from get­
ting caught in the radiator fan, V-be lts
or other moving parts, or from contact­ i ng hot parts . Tie back hair before
starting, and do not wear clothing that
will hang o r droop into the engine .
- Minimize exposure to emission and
chemical hazards~&. .
A WARNING
California Proposition 65 Warning:
- Engine exhaust, some of its const ituents,
a nd certain vehicle components contain
or emit chemicals known to the State of
Ca lifornia to cause cance r and birth de­
fects and reproductive harm. In addition, certain fl uids contained in veh icles and
certain products of component wear con­
tain or emit chemica ls known to the
State of California to cause cancer and
birth defects or other reproductive harm.
- Battery posts, terminals and related ac­
cessories conta in lead and lead com­
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive harms. Wash hands afte r handling.
Q) Note
When adding f lu ids, always make sure that
they are poured into the proper conta iner
or f iller opening, otherwise serious dam­
age to vehicle systems w ill occur .
@ For the sake of the environment
To detect leaks in time, inspect the vehicle
floor pan from underneath regular ly . If
you see spots from oil or other veh icle flu­
i ds, have your vehicle inspected by an au­
thorized Audi dealer. •
•

214 Checking and filling
Engine compartment
Engine compartment
These are the most important items that you can check.
Fig. 182 Typical layout for containers and eng ine o il filler cap
(D Eng ine o il filler cap ("1::::r.) . . . . . 216
@ Jump start point(+) under a cov-
er .. .. .... ... ....... .... ..
224, 275
@ Bra ke fluid reservo ir (0)) . . . . . 221
@ Coolant expansion tank (-L) . . . 219
® Jump start point(-) with hex
head sc rew ..... .......... ..
224, 275
® W indshield/headlight* washer
. (" ') container o ....... . ... .. . 225
The pos ition o f the engine o il fi lling hole
¢ fig . 182 (item @) can differ depending on
the eng ine design.
A WARNING
Before yo u check anything in the engine
compartment, always read and heed all
WARNINGS
¢ .&. in Working in the engine
compartment on page 212.
-
Engine oil
· Engine oil specifications
The engine oil used must conform to exact
specifications.
The service interval disp lay in the instrument
cluster of your vehicle will inform you when it
is time for a n oil change . We recommend that
you have your oil changed by an authorized
Audi Se rv ice Adv isor.
If you have to top off the o il between o il
changes, use the Audi o il quality standard
specified in the tab le.
Audi oil quality standard
Gasoline
VW 502 00 or
engine vw 504 00

Using the proper engine oil is important for
the functionality and service life of the en­
g ine. Your engine was factory -filled with a
h igh-quality oil which can usually be used
t h roughout the entire year.
Your Limited New Vehicle Warranty does not cover damage or ma lf u nctions due to
fa ilure to follow recommended mainte­
nance and use requirements as set forth in
the Audi Owner's Manual and Warranty
&
Ma intenance booklet .
- Use only a high quality eng ine oil that ex­
pressly complies w ith the Audi o il quality
sta ndard specified for your veh icle's e n­
gine . U sing any other oil can cause seri­
ous eng ine dam age.
- Do not m ix any l ubrica nts o r othe r addi­
tives into the eng ine oi l. Doing so can
ca use eng ine damage.
I f you need to add oil and there is no ne
availab le tha t mee ts the Audi o il qua lity
s t andard your engine requires, yo u may
add a tota l of no more than 0 .5 quart/ liter
of a high -quality "synthetic"oil t hat meets
the following specifications.
- Vehicles with gaso line engine: ACEA A3
or API S M with a viscosity grade of
SAE 0W-30, SAE SW-30 or SA E SW-40.
- For more information abo ut eng ine oil
that has been app roved for your vehicle,
please contact either your a uthori zed
Audi dealer or Audi Customer Relations
at 1 (800) 822 -2834 or visit our web site
at www.a udiusa .com or
www .aud icanada .ca .
Engine oil consumption
The engine in your vehicle depends on an ade ­
quate amount of oil to lubricate and cool all
of its moving parts.
In order to provide effective lubrication and
cooling of inte rnal engine components, all in-
~ ternal combustion eng ines consume a certai n ,....,
Checking and fillin g 215
amoun t of oil. Oil consumpt ion varies from
engine to engine and may change significantly
over the life of the engine . Typically, engines
with a spec ified break-in period (see
¢
page 193) consume more oil during the
break -in period than they consume after o il
consumption has stabilized .
U nder normal cond itions, the rate of oil con ­
sumption depends on the quality and viscos ity
of the oil, the RPM (revolutions per minute) at
which the engine is operated, the ambient
temperature and road conditions. Further fac­
tors are the amount of oil dilut ion from water
condensa tion or fue l resid ue an d the oxida­
t ion level of the o il. As any engine is subject to
wear as mi leage b uilds up, the oil consump ­
tion may increase over time until replacement
of worn components may become necessary.
With a ll these variab les coming into p lay, no
standard rate of oil consumption can be es ­
tablished or specified. There is no alternative
to regular and frequent check ing of the o il lev ­
el, see
Note .
If the yellow engine oil leve l warning symbo l
El in the instrument cl uster lights up, you
sho uld check the oil leve l as soon as possib le
¢
page 216. Top off the oil at your earliest
convenience
¢ page 216.
A WARNING
Before you c heck anythi ng in the engine
compartmen t, always read a nd heed all
WAR NINGS ¢&.
in Working in the engine
c ompar tment on page 212.
(D Note
D riving w it h an insufficient o il level is like ­
l y to cause sever e damage to the e ngine .
(D Tips
- The oil pressure warning display. is
not an indicator of the oil level. Do not
rely on it. Instead, check the oil level in
your engine at regular intervals , pref­
erably ea ch time you r efuel, and alway s
before going on a long trip . .,.
•
•

216 Checking and filling
-If you have the impression your engine
consumes excessive amounts of oi l, we
recommend that you consult an author­
ized Audi dealer to have the cause of
your concern properly diagnosed. Keep in
mind that the accurate measurement of
oil consumption requires great care and
may take some time . An authorized Audi
dealer has instructions about how to
measure oil consumpt ion accurately.
Checking the engine oil level
Fig. 183 MMI D isp lay : Oil leve l ind icator
Read oil level
.,. Park your vehicle so that it is horizonta lly
level.
.,. Shut the engine off when it is at operat ing
temperature .
.,. Switch only the ignition back on.
• Wait approx . two minutes.
• Se lect : Fu nct ion button
I _C_A_R_I > Oil level. Or
.,. Select : Function button
ICARI > Car sys-
tems* control button > Servicing & checks >
Oil level.
.,. Read the oil Level in the MMI* Display
c:> fig. 183. Add engine oi l if the bar of the
oil level indicator is near "min"
c:> page 216
Depend ing on the way the vehicle is driven
and the operating conditions, oil consumpt ion
can be up to a 1/2 quart per 600 mi les (0.5
li­
ter per 1,000 km) . Consumption may be high­
er within the first 3,000 miles (5 ,000 km).
(D Tips
The oil Level indicator in the MMI* Display
is only an information display . If the oil
Level is too Low, a minimum oil warning ap -pears in
the instrument cluster. Add oil
c:> page 216. If the hood has been opened,
the current oil level is shown in the instru­
ment cluster the next t ime the ignition is
switched on.
'e:;1: Adding engine oil
Fig. 184 Engin e compar tmen t: Cover on th e oil filler
neck
.,. Before you check anything in the engine
compartment,
always read and heed all
WARNINGS c:> .&. in Working in the engine
compartment on page 212 .
.,. Shut the engine off .
.,. Unscrew the cap
't'::71 to the engine oi l filling
hole
¢ fig. 184, c:>page 214, fig. 182 .
.,. Carefully top off with 0 .5 quarts (0 .5 liters)
of the appropriate oil
c:> page 214 .
• Check the oil level again after two minutes
r::;, page 216, Checking the engine ail level .
.,. Top off the oil aga in , if necessary .
.,. Screw the cap back on the filling hole .
_& WARNING
-While topping off, the oil must not come
i n contact with hot engine parts -fire
hazard!
- The oil filler cap must be properly se­
cured to prevent oil from being sprayed
on the hot engine and exhaust system
when the engine is running -fire hazard!
- If your skin has come in contact with the
engine o il, you must subsequently
cleanse it thoroughly.
(D Note
- Check the oil level using the radio or
MMI*. If the message Please reduce oil

"" N
0 ::.,: co ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
level appears, contact your authorized
A udi dealer or qualified workshop to
have excess oil ext racted if necessary.
- Audi does not recommend the use of oil
additi ves. They may damage the engine
and ad ve rsely affect your New Vehicle
Warranty.
@) For the sake of the environment
- Under no circ umstances ca n the o il come
i n contact with the sewage network or
the soil.
- Observe and fo llow lega l regu lations
when disposing of empty oil containers.
Changing the engine oil
We recommend thot hove your oil changed by
an authori zed Audi dealer or a qualified serv­
ice station .
Before you c hec k anything in the engine com ­
pa rtment,
always read and heed all WARN ­
INGS
c:> A in Working in the engine compart­
ment on page 212.
The engine oil must be changed according to the intervals specified in your Warra nty
&
Maintenance book let . This is very important
beca use the l ubricating properties of oil di­
minish gradua lly dur ing normal veh icle use .
Unde r some c irc umstances the engine o il
should be changed more frequently . Change
oil more often if you drive m ost ly short dis­
tances, operate the vehicle in dusty areas or
u nder predominantly stop-and-go t raff ic con­
d it ions, or have your veh icle w her e tempera­
tures rema in below free zing fo r ex tended pe­
rio ds.
Detergent add itives in the o il w ill mak e fresh
oil look da rk after the eng ine has been run­
ni ng fo r a shor t time. This is norma l and is not
a reason to ch an ge the oi l mo re often th an
recommended.
B ecause of the prob lem of prope r dispos al,
a long w ith the spe cial tools and necessary ex­
pe rti se require d, we strong ly recommend tha t
Checkin g and fillin g 217
you have your oil changed by an a uthorized
Audi deale r or a qualified service station.
If you choo se to change your oil your self ,
please note the fo llow ing important info rma­
t ion :
A WARNING
To reduce the risk of pe rsonal i njury if you
must change the eng ine oil in yo ur vehicle
yourself:
- Wear eye protect ion .
- To reduce t he risk of burns from hot en -
gine oil, let the engine coo l down to the
touch .
- W hen removi ng the oil dra in plug with
your fingers, stay as fa r away as possib le .
A lways keep your fo rearm parallel to the
groun d to help p revent hot o il from run­
ning down you r arm .
- Dra in the oil into a c ontaine r designed
for this purpose, one large enough to hold at least the tota l amount of oi l in
your engin e.
- Eng ine oil is poison ous. Keep it we ll out
of the reach of childre n.
- Continu ous contact wit h used eng ine oi l
is harmful to yo ur sk in. Always protect
your skin by washi ng oil off tho ro ughly
w it h soap and wate r.
(J) Note
Neve r mix oil additives with yo ur engine
oi l. These additives can damage your en­
g in e and adversely affect you r Aud i Limit­
ed New Veh icle Warranty.
@ For the sake of the environment
-Before changi ng your oil, first make su re
you know where you ca n prope rly dispose
of the us ed oil.
- Always disp ose of used eng ine o il proper­
ly . D o not dump it on garde n soil, wood­
e d ar eas, into op en st reams o r down
sewage drain s.
- Recycle used engi ne oil by taking it to a
used eng ine oil collect io n facility in you r
a rea, or contact a service sta tio n.
•
•

218 Check ing and filling
Engine cooling system
Coolant
The engine coolant performs two functions: it
keeps the engine from overheating and it pro ­
tects the engine from freezing in the winter .
The cooling system is sealed and generally re­
quires little attention.
The cooling system has been filled at the fac­
tory with a permanent coolant which does not need to be changed. The coolant consists of a
mixture of specially conditioned water and the
manufacturer's glycol-basedcoolant addi-
tive G13 antifreeze with ant icorrosion addi­
tives (50% for USA models; 60% for Canadian models) . This mixture both assures the neces­
sary frost protection and protects metal com­
ponents in the engine's cooling system from
corrosion and scaling.
It a lso raises the boil­
ing point of the coo lant.
Do not reduce the concentration of the coo l­
ant in the summer by adding plain water .
The
pr opor tion of coolant add itiv e m ust be at
l eas t 50% but not more than 60%
to main­
tain antifree ze protection and cooling efficien­
cy. If the coolant frost protection is too low,
the coolant could freeze and damage the veh i­
cle heating and eng ine cooling system .
For year-round driving, antifree ze is added at
the factory for temperatures down to:
- -31°F(-35°C)USA
- - 40 ° F ( - 40 °C) Canada.
I f you must add coo lant, use a m ixture of wa­
ter and coolant addit ive. M ixing the coolant
addit ive with dist illed water is recommended.
_& WARNING
Before you check anything in the engine
compartment, always read and heed all
WARNINGS
~ &. in Working in the engine
compartment on page 212.
(D Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in
-
your vehicle is sufficient to meet the cli­mate conditions . This is especia lly impor­
tant if you live in a reg ion where the win­
ter is extreme ly cold. If necessary, in­
crease the proportion of coolant additive
to 60% .
- When adding coolant additive to your
cooling system, remember :
- We recommend us ing on ly coolant ad­
d itive G12 ++ or G13 for your vehicle.
This coolant addit ive is availab le at a u­
thorized Audi dealers. Other types of
antifreeze can significantly reduce cor­ rosion protection. The resulting corro­
sion can cause a loss of coolant and se­
rious engine damage .
- Do not add any type of radiator leak seal­
ant to your vehicle's engine coolant.
Add ing radiator repa ir flu id may adverse ­
ly affect the function and performance of
your cooling system and could resu lt in
damage not covered by your New Veh icle
Limited Warranty.
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance.
F ig . 1 85 Engine compar tmen t: Cover on the coo la n t
expans io n t ank
.,. Before you check anything in the engine
compa rtment,
alwa ys read and h eed all
W ARNING S ~ ,& in Working in the engine
compartment on page 212.
.,. Park your vehicle on a level surface .
.,. Turn off the ignition.
.,. Read the engine coolant level from the coo l­
ant expansion tank
c:> fig . 185, c:> page 214,
fig . 182.
With a cold engine, the coolant Iii>-

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,...., ..,., ,....,
level should be between the "MIN" and
"MAX" markings. When the engine is warm,
the level may be slightly above the "MAX"
marking .
The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration
<=> page 214.
To obtain an accurate reading , the engine
must be switched
off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor.
When the coolant level is too low, the warning
light in the Auto-Check System <=>
page 17 will
blink until you add coolant and the level has
been restored to normal. Even though there is
an electric coolant level sensor, we still rec­
ommend you check the coolant level from
time to time.
Coolant loss
Coolant loss may indicate a leak in the cooling
system. In the event of coolant loss, the cool­
ing system should be inspected immediately
by your authorized Audi dealer.
It is not
enough merely to add coolant.
In a
sealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheating.
A WARNING
The cooling system is under pressure and
can get very hot. Reduce the risk of scald­
ing from hot coolant by following these
steps.
- Turn
off the engine and allow it to cool
down.
- Protect your face, hands and arms from escaping fluid and steam by covering the
cap with a large, thick rag .
- Turn the cap slowly and very carefully in
a counter-clockwise direction while ap­
plying light, downward pressure on the
top of the cap .
- To avoid being burned, do not spill anti­
freeze or coolant on the exhaust system
Checking and filling 219
or hot engine parts. Under certain condi­
tions, the ethylene glycol in engine cool­
ant can catch fire.
([) Note
Do not add any type of radiator leak seal­
ant to your vehicle's engine coolant. Add- ing radiator repair fluid may adversely af­
fect the function and performance of your
cooling system and could result in damage
not covered by your New Vehicle limited
Warranty .
Adding coolant
Be very careful when adding engine coolant.
Before you check anything in the engine com­
partment ,
always read and heed all WARN­
INGS <=>
A in Working in the engine compart­
ment on page 212 .
Requirement: There must be a residual
amount of coolant in the expansion tank <=>(D.
.,. Turn
off the engine.
.,. Let the engine cool down.
.,. Place a thick rag over the coolant expansion
tank
<=> page 218, fig . 185 and carefully turn
the cap counter-clockwise
<=> .&_ .
.,. Add coolant mixed in the correct ratio
<=> page 218, Coolant up to the MAX mark­
ing.
.,. Make sure that the fluid level remains sta-
ble. Add more coolant if necessary.
.,. Twist the cap on again
tightly.
Replacement engine coolant must conform to
exact specifications <=>
page 218, Coolant.
We recommend using only coolant additive
G12 ++, G13 or in an emergency G12 +. Do
not
use a different additive. In an emergency use
plain water until you can get the correct addi­
tive and can restore the correct ratio. This
should be done as soon as possible.
If you have lost a considerable amount of
coolant , then you should add cold antifreeze
and cold water only when the engine is cold.
Always use
new engine coolant when refilling . .,.
•
•

220 Check ing and filling
Do not fill coolant above the "MAX" mark. Ex­
cess coolant will be forced out through the pressure re lief valve in the cap when the en ­
g ine becomes hot.
A WARNING
- The coo ling system is under pressure and
can get very hot. Reduce the risk of
scalding from hot coolant by following
these steps.
- Turn
off the engine and a llow it to cool
down.
- Protect your face, hands and arms from
escaping fluid and steam by covering
the cap with a large, thick rag.
- Turn the cap slowly and very carefully in a co unte r-clockwise d irection while
apply ing light, downward press ure on
the top of the cap.
- To avoid being burned, do not spi ll an­
tifreeze or coolant on the exhaust sys­
tem or hot engine parts. Under certa in
conditions, the ethylene glyco l in en­
g ine coolant can ca tch f ire.
- Antifreeze is poisonous. Always store an­
t ifreeze in its original container and we ll
o ut of the reac h of children.
- If you drain the coolant, it must be
caught and safely stored in a p roper con­
ta iner clear ly ma rked "poison".
(D Note
- Do not add coolant if the expansion tan k
i s empty. A ir could enter the cooling sys­
tem and damage the eng ine. If this is
the case, do not continue driving. Seek professional assistance.
- Coolant po llutes the e nv ironment and
could cause an engine fire. Excess coo l­
ant will be forced ou t through the pres ­
su re rel ief v alve in the ca p when the en­
gine becomes hot .
- If, in an emergen cy, only water can be
added, the correct ratio be twee n wa te r
and antifr eeze¢
page 218 must be re ­
stored as soon as possib le .
{® For the sake of the environment
D rained coo lant should not be reused . A l­
ways d ispose of used coolant whi le observ­
i ng a ll environmental regulations.
Radiator fan
The radiator fan switches on automatically by
itself
T he rad iator fan is driven by the engine v ia the
V-belt. The viscous clutch regulates the spee d
of the fan acco rding to the temperature of the
coolant.
An a uxiliary electric radiator fan* sw itches on
and
off depending on coolant temperature
and othe r vehicle ope rat ing condit ions .
A ft er yo u sw itch the eng ine
off, the aux iliary
f an can continue running for up to 10 m inutes
- even wit h the ignition
off. It can even switc h
on again later by itself¢.&. , if
- t he temper ature of the engine coo lant rises
due to the heat build -up from the engine in
the engine compa rtment, or
- the engine compa rtment heats up because
the vehicle is parked in intense sunlig ht.
A WARNING ~
- To reduce the risk of perso na l inj ury nev -
er touch the radiator fan.
- The a uxiliary electric fan is tempe rat ure
contro lled and can sw itch on sud denly
even when the engine is not running.
- The a uxiliary radiator fan switches on a u­
tomatically when the engine coo lant
reac hes a certa in temperature and will
continue to ru n until the coolant temper­
ature drops.

M N
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rl I.O
"' rl
"' rl
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
N
N
;:;;
" 03
"'
Fi g. 186 Eng ine compartment: Cover on the brake flu ­
id reservoi r
Before you check anything in the engine com­
partment,
a lwa ys read and heed a ll W ARN­
ING S c:> .&.. in Working in the engine compart­
ment on page 212 .
~ Read the brake fluid level from the brake
fluid reservoir
c:> fig. 186, <=> page 214,
fig . 182.
The brake flu id level must be be­
tween the "MIN" and "MAX" markings.
The brake fluid reservoir is located at the rear
partition of the engine compartment on the
left side
<::;> page 214 .
The fluid level may drop slightly after some
time due to the automatic adjustment of the
brake pads . This is not cause for alarm .
If the brake fluid level falls
considerably be­
low the "MIN" mark, the brake warning/indi­
cator light (U.S. models:~, Canadian
models: .) will come on
r:> page 15. Do not
continue to operate the vehicle. The complete b rake system shou ld be thoroughly checked
by an authorized A udi dealer or qualified
workshop and the cause co rrected . If the
b rake fluid level is too low, the brake warn ing/
indicator light w ill illuminate. Contact an au­
thorized Audi dealer
immediately .
@ Tips
The brake f luid reservoir is located under­
neath the cover .
Checking and fillin g 221
Changing brake fluid
Have the brake fluid changed by an experi­
enced technician.
Brake fluid absorbs moisture from the air. If
the water content in the brake fluid is too
high, corrosion in the brake system may result
after a period of time . The boiling point of the
brake flu id will also dec rease considerably and
decrease braking pe rformance.
Therefore, the brake fluid must be changed
every two years. Always use new brake flu id
which conforms to Federal Motor Vehicle
Standard "F MVSS 116 DOT 4".
The brake fluid reservo ir can be d iff icult to
reach, the refore, we recommend that you
have the brake fluid changed by your author­
i zed
Audi d ealer. Your dealer has t he correct
tools, the right brake fl uid and t he know-how
to do this for you .
A WARNING -.
-Brake fluid is poisonous . It must be stor­
ed only in the closed original container
out of the reach of children!
- Brake failure can resu lt from o ld or inap­
propriate brake f luid. Observe these pre­
cautions:
- Use only brake fluid that meets SAE
spe cificat ion
J 1 7 03 and conforms to
Federa l Moto r Ve hicl e Standard 116.
Always check with yo ur authorized Audi
dealer to make sure yo u are using the
correct bra ke fluid. The correct type of
brake f luid is also indicated on the
brake f luid reservoir.
- The brake fluid must be new. Heavy use
of the brakes can cause a vapor lock if
the brake fluid is left in the system too
l ong. This can seriously affect the effi­
c iency of the brakes as well as your
safety. Th is cou ld resu lt in an accident.
(D Note
Brake fluid will damage the paint of your
vehicle .