check engine AUDI A5 COUPE 2013 Owner's Manual

198 Trailer towing
Tire pre ss ure
When towing a trai le r, inflate the t ires of your
vehicle to the co ld tire pressure listed under
"Full load" on the label located on the driver 's
side B-pillar (visible when the door is open).
Inflate trailer tires to trailer and tire manufac ­
turers' specifications.
Light s
The headlight settings should be checked with
the trailer attached before dr iving off. Check
to make sure both vehicle and tra iler lights
are working properly.
Saf ety chains
Be sure tra iler sa fe ty cha ins a re p roperly con­
nected from the trailer to the hitch on the ve ­
hicle. Leave eno ugh slack in the chains to per ­
mit turning corners. When you install safety
cha ins, make sure they w ill not drag on the
road when you are driving.
The chains shou ld cross under the trai ler
tongue to prevent it from dropping in case of
separation from the hitch.
Driving instructions
Driving with a trailer always requires extra
care and consideration.
To obtain the best possible handling o f vehicle
and trai ler, p lease note the following:
.,. Do not tow a loaded tra iler whe n your car it ­
self is no t loaded .
.,. Be especia lly careful when passing other
vehicles .
.,. Observe speed limits .
.,. Do not drive at the maximum permissible
speed.
.,. Always apply brakes early .
.,. Monitor the temperature gauge.
Weigh t di stribution
Towing a loaded trai ler with an empty car re­
sults in a highly unstable distribution of
weight . If this cannot be avo ided, drive at very
low speeds only to avoid the risk of losing
steer ing control. A "ba
lanced' ' rig is easier to operate and con­
trol. This means that the tow vehicle should be loaded to the extent possible and permissi­
ble, while keep ing the trai ler as light as possi­
ble under the c ircumstances. Whenever poss i­
ble, transfer some cargo to the luggage com ­
partment of the tow veh icle while obse rving
tongue load requ irements and vehicle load ing
considerations.
Speed
The higher the speed, the more d iff icu lt it be­
comes for the driver to control the rig. Do not
drive at t he maximum permissible speed. Re­
duce your speed even more if load, weather or
wind conditions are unfavorable -pa rtic ularly
whe n going downhill.
Reduce veh icle speed
immediately if the trail­
er shows the slightest s ign of sway ing.
Do n ot
try to sto p th e swaying by acc elerating .
Observe speed limits. In some areas, speeds
fo r vehicles tow ing tra ile rs a re lower than for
regular veh icles .
Always apply brakes early. When driving downh ill, shift into a lower gear to use the en ­
gine braking effect to slow the vehicle . U se of
the brakes alone can cause them to overheat
and fail.
Coolant tempe rature
The coo lant temperature gauge c> page 10
must be observed carefu lly. If the needle
moves close to the upper end of the scale, re­
duce speed immediately and/or turn off the
air conditioner.
If the coolant temperature warning light •
i n t he i nstrument cluster starts flashing, pull
off the road, stop and let the engine
idle for
abo ut two min utes to prevent he at build-up .
_& WARNING
Anyone not proper ly restra ined in a mov ­
i ng vehicle is a t a much greater risk in an
accident . Never let anyone ride in yo ur car
who is not p roperly wea ring the rest raints
prov ided by Audi.
-

CD Note
-Never use chemical solvents (e.g . lighter
flu id, turpentine), waxes, shoe polish or
s imilar products on the leather surfaces
in your Audi.
- To avoid damage, have stubborn stains removed by a commerc ial cleaning spe­
cialist .
Cleaning Alcantara ® (synthetic suede)
App lies to vehicles: with Alcantara® upholstery
Rem oving dus t and dirt
.,. Moisten a cloth, squeeze out excess water
and wipe down the seat surfaces .
Rem ov ing sta in s
.,. Moisten a cloth with lukewarm water or
with diluted
e th yl (rubb ing ) a lcohol.
.,. Dab at the stain. Start at the outside and
work inwards .
.,. Once the stain is no longer visible, use a
soft dry cloth or t issue to soak up the mois­
tu re.
Do not use leather cleaning products on Al ­
cantara ®.
You may use a suitable shampoo for removing
dust and dirt. Dust and grit in the pores and seams can
scratch and damage the surface. If the car is
left standing in the sun for long periods, the
Alcantara ® should be protected against direct
sunlight to prevent it from fad ing . Slight color
variations will develop in normal use and are
not an indication of material deterioration.
CD Note
- Never use chemical solvents (e.g . lighter
flu id, turpentine), waxes, shoe polish or
s imilar products on Alcantara ® surfaces.
- To avoid damage, have stubborn stains
removed by a commerc ial cleaning spe­
cia list .
- Do not use brushes, st iff sponges or s im­
i larly abrasive cleaning aids .
Cleaning and protec tion
Safety belts
Only well-maintained safety belts work relia­
bly when needed .
.,. Keep belts clean.
.,. For cleaning, use a mild soap and water so l­
ution . Let belts dry thoroughly and away
from d irect sunlight .
.,. Do not allow inertia ree l safety belts to re­
tract befo re they are completely dry.
.,. Check the condition of your safety bel ts
reg­
ularly .
Heavi ly so iled safety be lts may not ret ra ct
properly.
A WARNING
-Damaged safety belts can break in a crash .
- Anyth ing that might damage yo ur safety
be lts could mea n that you and your pas­
sengers would not be adequate ly pro­
tected in an accident .
- Safety belt performance depends on cor­
rect insta llation. Never remove be lts
from the vehicle to clean them.
- Do not use chemical clean ing agents,
bleach or dyes. They have corrosive prop­
erties which wea ken the webbing.
- When clean ing you r safety be lts, inspect
them for damage . If you discover dam­
age, see yo ur authorized Audi dealer .
- Always read and heed a ll WARNINGS and
other information
¢ page 200.
Engine compartment
Be especially careful when cleaning the en­
gine compartment.
Alway s swit ch off th e ign ition befor e clean­
ing the engine
¢ ,&. .
Plenum panel
Remove leaves from the plenum panel in front
of the windshield under the eng ine hood . This
prevents t he wate r drain holes from becomi ng
blocked, and it p revents deb ris from enter ing
the ve hicl e interio r th ro ugh the heating and
ventilat ion duc ts . .,..
209
•
•

216 Checking and filling
Checking and filling
Engine hood
Releasing the engine hood
The engine hood is released from inside the
vehicle .
Fig . 16 7 Dr iver' s side footwe ll: e ngin e hood re lease
lever
.. Open the drive r's door.
.. Pull the release lever on the left under the
inst rument panel
c> fig . 167 in the d irect ion
of the ar row .
The hood pops up s light ly under spring pres­
sure.
Opening the engine hood
Fig. 168 Re lease lever under the eng ine hood
Before opening the engine hood, make s ure
that the windshie ld w ipers are flat against the
windshie ld. Otherwise, they co uld damage the
pa in t on the hood.
.. Pull up on the release unde r the hood
r:!> fig . 168 . This releases the catch.
.. Open the hood all the way
c> .&,.
A WARNING
-Hot eng ine co olant can burn you.
- To reduce the risk of being b urned, never
o pen the hood if you see or hear steam
or coo la nt escapi ng from the eng ine
compa rtment . W ait unt il no steam or
coo lant can b e se en o r heard before care­
fu lly openi ng the ho od.
Closing the engine hood
.. Pull the hood down un til the pressure from
t he stru ts is reduced .
.. Let the hood
drop down an d latc h in p lace.
Do not try to push it shut; it may fail to en­
gage
c> .&, .
A WARNING
--
A ho od t hat is not completely latched
could fly up an d block your vi ew while dr iv­
i ng.
- W hen you close the engine hood, c heck it
to make sure the safety catch has p ro per­
ly engaged . The ho od s houl d be flush
wit h the surrou nding vehicle body parts.
- If you notice while dr iv ing t hat t he hood
is not s ecured 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 wo rk in the
engine compartment, for example checking
and filling different fluids, th ere is a risk of
injury, burns and accidents. To prevent per­
sonal injury always observe the following
WARNINGS. The engine compartm ent of any
vehicle is a hazardous area
c> &, .
A WARNING
To he lp avo id i njury, before yo u check any­
thi ng under the hoo d:
- Tu rn off the eng ine.
- Remove the igni tion 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.
- 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:
Checking and filling 217
- 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~,& .
.8, 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 w ill 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 veh icle flu­
i ds, have your vehicle inspected by an au­
thorized Audi dealer . •
•

218 Checking and filling
Engine compartment
Engine compartment
These are the most important items that you can check.
Fig. 169 Typical layout for containers and eng ine o il filler cap
(D Eng ine o il filler cap ("1::::r.) . . . . . 221
@ Jump start point(+) under a cov-
er .. .. .... ... ....... .... ..
229, 264
@ Bra ke fluid reservo ir (0)) . . . . . 225
@ Coolant expansion tank (-L) . . . 224
® Jump start point(-) with hex
head sc rew ..... .......... ..
229, 264
® W indshield/headlight* washer
. (" ') container o ....... . ... .. . 230
The pos ition o f the engine o il fi lling hole
¢ fig . 169 (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 216.
-
Engine oil
· Engine oil specifications
The engine oil used in your Audi needs the
right kind of oil.
The eng ine in your Audi is a sophist icated
power plant that was b uilt to exacting specifi­
cations . Th is engine needs the right k ind of
engi ne oil that meets specifica tions regard ing
quality a nd v iscosity so that it can run
smooth ly and reliab ly. Choosing the rig ht o il
and changing oil within the t ime and mile age
i n tervals prin ted in you r vehicle's Warr anty
&
Maintenance booklet matters a lot more to ­
day tha n it did years ago . Aud i has deve loped
a spec ia l quality standard for engine oil that
will help assure that your vehicle 's engine w ill
get the lubr ication it needs for proper opera-
t ion . ..,_

Modern eng ine lubrication has taken a quan­
tum leap in the last few years . Many synt hetic
oils ava ilable today provide better engine lu­
brication that can outlast traditional pet role­
um-based o ils, making them a smart choice
for use throughout the life o f your Audi .
W hether you use synthetic or petroleum­
based engine oil, the oil that you use must
c o nform to Audi's oil quality standard
VW 502 00 to help keep your vehicle's engine running smoothly and help prevent the for­
mat ion of harmfu l deposits, sometimes called
"sludge", that ove r time can lead to expensive
r epairs .
At the time of pri nting, engine o ils available in
the U .S . and Canada that meet the exacting
specifications of Audi oi l standard VW 502 00
are synthetic engine oils. This does not mean, h owever, that every synthetic engine oil w ill
meet Audi oil standard VW 502 00. So always
be sure that you use an approved oi l.
To help prevent the format ion of harmful de­
posits use only oi l with the fo llowing spec ifi­
cations printed on the oil container:
Audi oil standard VW 502 00
O il conta iner labels may carry the specif ica­
tion s ingly or in comb inat ion w ith other des ig­
nations and oil qua lity standards .
Viscosity
Engine oi ls are graded according to their vis­
cosity. The proper v iscosity grade oi l for your
engine depends on cl imactic or seasonal con­
d itions where you dr ive. You can use oil with a
viscosity grade of SAE SW40 across all tem­
pe rature ranges for normal d riving conditions .
However, if eng ine oi l viscosity grade SAE
SW40 is not avai lab le, you can also use viscos­
ity grade SAE SW-30 or SAE OW-40 as long as
it meets Audi o il quality standard VW 502 00
specifications.
Because engine oil that meets the Audi oil
standard may not be available everywhere
when you need it, we st rongly recomme nd
that you always carry with you a n ext ra quart
Checkin g and fillin g 219
(li ter) of oil that exp ress ly con forms to the
VW 502 00 specification, in case you have to
top
off the o il while on the road.
Only if the level of the o il is at or be low the
minimum mark -and no oi l that expressly
confo rms to Audi oil standard VW 502 00
spec ifications is available -may you top
off
with a h igh quality engine o il, preferab ly syn ­
thet ic-based, that meets ACEA A3 or API SM
specifications, but even then, only in v iscosity
grades SAE SW-40, SA E SW-30, o r SAE
OW-40. However, dur ing the entire time be­
tween o il cha nge inte rva ls, never top
off with
more than a tota l of 0. 5 q t/liter engine o il
that does not con form to A udi oil specification
vw 502 00.
Fo r more information about eng ine oi l tha t
has been approved for your veh icle, ple ase
contac t either yo ur a uthorized Aud i dea le r or
Audi C ustomer Re lations at 1 (800) 822 -2834
or visit our web site at www .audiusa.com or
www.aud icanada .ca. Here you w ill also find a
current list of oils (manufacturers, brand
names etc.) that conform to Audi oil standard
vw 502 00.
Changing the engine oil
T he eng ine oi l and o il f ilter m ust be changed
according to the mileage (kilometers) and
time intervals specified i n your vehicle's War ­
ranty
& Maintenance booklet. Do not exceed
these interva ls - harmful deposits from old
engine oil can reduce engine performance and
can lead to expensive engine repairs.
Changi ng the oil at the recommended inter­
vals is so very important beca use the lubricat­
ing propert ies of oil decrease gradually during
norma l veh icle use . If you a re not sure when
you have your o il cha nged, ask your author­
ized Audi Se rv ice Adv isor.
Under some circumstances the engine oil
shou ld eve n be changed more frequent ly.
Change oil more often if you dr ive most ly
sho rt distances, operate the veh icle in dusty
areas o r most ly under stop-and-go traff ic con-
di tions, o r when you use your vehi cle where .,..
•
•

220 Check ing and filling
temperatures stay below freezing point for
long periods.
Detergent addit ives in the o il w il l make fresh
oil look dark after the eng ine has been run­
ning for a short time . This is norma l and is not
a reason to change the oi l more often than
recommended.
D am age or m alfunc tions du e to lack of
m ainten ance
It
is essential that you change your oil at the
recommended in tervals using only engine o il
that complies with Audi oi l standard
VW 502 00. Your Limited New Vehicle War­
ranty does not cover damage or malfunctions
due to fail ure to fo llow recommended mainte­
nance and use requ irements as set forth in
the Audi Owner's Manual and Warranty
&
Maintenance book let . Your dealer will have to
deny warranty coverage unless you present to
the dea ler proof in the form of Service or Re­
pa ir Orders that all scheduled ma intenance
was performed in a t imely manner.
Eng ine 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
cool ing of internal engine components, a ll in­
ternal combustion eng ines consume a certa in
amount of oil. O il consumption varies from
engine to engine and may change significantly
over the life of the engine. Typica lly, engines
with a specif ied break-in period (see
¢
page 193) consume more oil during the
break-in period than they consume after oil
consumption has stabilized.
Under norma l conditions, the rate of oil con­
sumption depends on the quality and viscosity
of the oil, the RPM (revolutions per minute) at
which the engine is operated, the ambient
temperature and road condit ions . Further fac­
tors are the amount of oil d ilution from water
condensat ion or fuel residue and the ox ida­
tion level of the oi l. As any engine is subject to wear as mi
leage builds 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 play, no
standard rate of oil consumption can be es­
tablished or specified. There is no alternative
to regu lar and frequent check ing of the o il lev ­
el, see
Note .
If
the yellow engine oil leve l warning symbo l
I! in the instrument cluster lights up, you
shou ld check the oil leve l as soon as possib le
¢
page 221. Top off the oil at your earliest
convenience ¢
page 221.
A WARNING '"---
Before you check anythi ng in the engine
compartment, always read and heed all
WARNINGS¢
A in Working in the engine
compartment on page 216.
(D Note
Driving w ith an insufficient o il level is like­
ly to cause severe damage to the engine .
(D Tips
-The oil pressu re warn ing display . is
not an indic ator of the oil l evel. Do not
r el y on it . In stea d, check th e oil l eve l in
y our engin e at regular inter val s, pref ­
erably ea ch time you r efu el, and alwa ys
before go ing on a long trip .
-If you have t he impression yo ur engine
consumes excessive amoun ts of o il, we
recommend that you consu lt an author­
ized Aud i dea ler to have the cause of
your concern properly diagnosed. Keep in m ind that the accurate measu rement of
oil consumption requ ires great care and
may take some time. An authorized Aud i
dealer has instructions about how to
measu re oil consumption accurately.
-

Checking the engine oil level
Fig . 170 MMI Disp lay: Oil l eve l ind icator
Re ad oil le vel
.,. Park you r vehicle so that it is horizontally
level.
.. Shut the engine off when it is at operating
temperature.
.,. Switch only the ignition back on.
.,. Wait approx . two minutes .
.,. Select : Funct ion button
ICAR I > Oil l evel. Or
.,. Se lect: Function button
ICA RI > Car syste m s
control button > Servic ing & c he ck s > Oil
l e v el.
.,. Read the oil leve l in the MMI * Display
r:!> fig . 170 . Add engine oi l if the bar o f the
oi l level ind icator is near "Min"
c> page 221
D epending on the way the veh icle is driven
and the operating conditions, oil consumption
can be up to a 1/2 quart per 600 miles (0 .5
li­
ter per 1,000 km) . Consumption may be high­
er within the first 3,000 mi les (S,000 km).
@ Tips
The oil level indicator in the MMI* Disp lay
is only an information display.
If the oi l
level is too low, a min imum oil warning ap­
pears in the instrument cluster. Add oil
¢ page 221 . If the hood has been opened,
the current oil level is shown in the instru­
ment cluster the next time the ign ition is
sw itched on . Checkin
g and fillin g 221
~ Adding engine oil
Fig. 171 Eng in e compa rtm en t: Cove r on the oil filler
n eck
.,. Before yo u check anything in the engine
compa rtment,
alwa ys read and h eed all
WARNING S
c> .&. in Working in the engine
compartment on page 216 .
.. Unscrew the cap
'e:;r. to the engin e oil filling
hole ¢fig . 171, r:!>page 218, fig. 169 .
.,. Carefully top off with the appropr iate oil in
0 .5 liter doses .
.. Check the oil level aga in after two minutes
r:!> page 221 .
.,. Top off the o il aga in, if necessary.
.,. Sc rew the c ap back on the filling hole .
&_ WARNING
-Wh ile topping off, the o il m ust not come
in contact with hot engine parts -fire
hazard!
- The oi l filler cap mus t be p roperly se ­
cured to prevent oil from being sprayed
on the hot engine and exhaust system
when the engine is running -fire hazard!
- If you r skin has come in contact with the
engine o il, you must subsequently
cleanse it thoroughly.
(D Note
- Check the oil leve l using the radio or
M MI* . If the message
Plea se reduce oil
level
appears, contact yo ur authorized
Audi dea ler or other qualified workshop
to have excess oil extracted if necessary.
- Audi does not recommend the u se of o il
addit iv es. They m ay damage the engine
and adversely aff ect your New Vehi cle
W arranty .

222 Check ing and filling
@ For the sake of the environment
- Under no circumstances can the oil come
in contact with the sewage network or
the soil.
- Observe and follow legal regu lations
when disposing of empty oil containers.
Changing the engine oil
We recommend thot hove your oil changed by
an authorized Audi dealer or a qualified serv­
ice station.
Before you check anything in the engine com­
partment,
a lways r ea d and heed all WARN­
ING S ¢ & in Working in the engine compart­
ment on page 216.
The engine oil must be changed according to
the intervals specified in your Warranty
&
Maintenance book let. This is very important
because the lubricating properties of oil di­
minish gradually during normal vehicle use .
Under some circ umstances the engine oi l
should be changed more frequently . Change
oil more often if you drive mostly short dis­
tances, operate the vehicle in dusty areas or under predominantly stop-and -go traffic con ­
d itions, or have your veh icle where tempera­
tures remain below freez ing fo r extended pe­
riods.
Detergent addit ives in the o il w ill make fresh
oil look dark after the eng ine has been run­
n ing fo r a short time. This is norma l and is not
a reason to change the oil mo re often than
recommended.
Because of the problem of proper disposal ,
a long w ith the special tools and necessary ex­
pertise required, we strong ly recommend that
you have your o il changed by an authorized
Audi de ale r or a qualified service station.
If you cho ose t o c han ge your oil yours elf ,
please note the following important informa­
tion :
A WARNING
To reduce the risk of personal injury if you
must change the eng ine oil in your vehicle
yourself:
- Wear eye protect ion.
- To reduce the risk of burns from hot en- gine oil, let the engine cool down to the
touch.
- When removing the o il dra in plug with
your fingers, stay as far away as possible. Always keep your forearm parallel to the
ground to help prevent hot oil from run­
n ing down you r arm.
- Dra in the oil into a container designed
for this purpose, one large enough to hold at least the tota l amount of oil in
your engine.
- Engine oil is poisonous. Keep it we ll out
of the rea ch of childre n.
- Continuous contact with used eng ine o il
is harmfu l to your sk in. Always protect
your skin by washing oil off tho ro ughly
with soap and wate r.
@ Note
Neve r mix oil additives with your engine
oi l. These additives can damage your en­
g ine and adversely affec t you r A ud i L imit­
ed New Veh icle War ranty.
@ For the sake of the environment
- Before changing your oil, first make su re
you know where you can prope rly dispose
o f the used oil.
- Always dispose of used eng ine oi l proper ­
ly. Do not dump it on garden soil, wood­
ed areas, into open streams o r down
sewage drains.
- Recycle used engi ne oil by taking it to a
used engine oil collection facility in you r
area, or contact a service station.

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 water and the manufacturer's gly ­
col-based coolant additive G13 antifreeze with
anticorrosion additives (50% for USA models;
60% for Canadian models). This mixture both
assures the necessary frost protection and
protects metal components in the engine's
cooling system from corrosion and scaling. It
also raises the boiling point of the coolant.
Do not reduce the concentration of the cool­
ant in the summer by adding plain water.
The
proportion of coolant additive must be at least 50% but not more than 60%
to main­
tain antifreeze protection and cooling efficien­
cy. If the coolant frost protection is too low,
the coolant could freeze and damage the vehi­
cle heating and engine cooling system .
For year-round driving, antifreeze is added at
the factory for temperatures down to:
- -31°F(-35 °C)USA
- -40 °F ( - 40 °C) Canada.
A WARNING
Before you check anything in the engine
compartment, always read and heed all
WARNINGS
¢ .&. in Working in the engine
compartment on page 216.
(D Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in
your vehicle is sufficient to meet the cli­
mate conditions . This is especially impor­
tant if you live in a region where the win­
ter is extremely cold. If necessary, in-
Checking and filling 223
crease the proportion of coolant additive
to 60%.
- When adding coolant additive to your
cooling system, remember:
- We recommend using only coolant ad­
ditive G12++ or G13 for your vehicle .
This coolant additive is available at au­
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.
Adding radiator repair fluid may adverse­
ly affect the function and performance of
your cooling system and could result in
damage not covered by your New Vehicle
Limited Warranty.
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance.
Fig. 172 Engine compar tment: Cover on the coola nt
expansio n tank
-... ;;; ,; a, m
.. Before you check anything in the engine
compartment,
always read and heed all
WARNINGS ¢ & in Working in the engine
compartment on page 216.
"' Park your vehicle on a level surface .
"' Turn off the ignition .
"' Read the engine coolant level from the
coolant expansion tank¢
fig. 172 ,
¢ page 218, fig. 169 .
With a cold engine,
the coolant level should be between the
"MIN" and "MAX" markings . When the en­
gine is warm, the level may be slightly above
the "MAX" marking.
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