engine AUDI A7 2017 Owner´s Manual

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\.J - A WARNING ,~
Ad Blue can irritate the skin, eyes and respira­
tory system. If there is contact with the fluid,
flush immediately with plenty of water . Con­
sult a physician if necessary.
CD Note
- Only use Ad Blue that conforms to the
standard ISO 22241 -1. Do not mix any addi ­
tives w ith the AdBlue and do not d ilute it
with water.
- Do not add Ad Blue to the diesel ta nk or add
diesel fuel to the Ad Blue tank. Do not start
the engine under any circumstances if the
wrong f uel is filled in the tank. There is a
risk of damaging the fuel tank system and
the engine. See an author ized Audi dealer or
authorized Audi Service Facility for ass is­
tance .
- Ad B lue attacks surfaces such as pa inted ve ­
hicle components, plast ic and carpet . Re­
move the fluid as quickly as poss ible with a
damp cloth and plenty of cold water. If the
Ad Blue has already crysta llized, use warm
water and a sponge . AdBlue residue that is
not removed will crysta llize a nd can damage
the affected surface.
- Do not store refill bottles or canisters per ­
mane ntly in the vehicle . If the container
l ea ks, the escaping AdBl ue could damage
t h e veh icle inter io r.
- Do not allow AdBlue to come into co ntact
with clothing. If there is contact w ith the
f lui d, f lush immed iate ly w ith p lenty of wa­
te r.
(j) Tips
Follow the Ad B lue man ufact urer's instr uc­
t ions fo r use and storage.
Refilling AdBlue using a bottle
Applies to: vehicles with selective catalytic reduction
.. Remove the cap from the refi ll bottle ¢ A in
Filling AdBlue on page 197, ¢(Din Filling
AdBlue on page 197 .
Check ing and Filling
.. Position the bott le on the fi ller tube and turn
the bottle clockwise until it stops turning .
.. Press lightly against the bottom of the bottle
to empty it. Cont inue pressing the bottom of
the bottle until it is empty or until fluid stops
flow ing into the tank .
.,. Remove the bottle and seal the filler neck
¢ page 198, Completing AdBlue refill.
CD Note
Only use refill bottles that are approved for
your vehicle . Using other systems can cause
Ad B lue to leak.
@ Tips
- You can obtain ref ill bottles from an author­
ized Aud i dea le r o r aut horized Aud i Serv ice
Facility.
- A permitted refi ll bottle contains approxi­
mately 0.5 gallon (1.9 liters) of AdBl ue.
Refilling AdBlue using a canister
Applies to: vehicles with selective catalytic reduction
®
+®
Fig. 181 Can iste r w ith attachable hose
.. Remove the cover from the refill canister¢ A
in Filling AdBlue on page 197, ¢(Din Filling
AdBlue on page 197 .
.,. Secure the end of the hose (Don the opening in
t he caniste r@ by turni ng the hose to the right.
.,. Remove the cap @ from the o ther end of the
hose @.
.. Position the end of the hose @ on the filler
neck in the veh icle and turn the hose to the
r ight to tighten it .
.. Lift the canister up and then t ip it. Cont inue
holding the canister in a tipped pos ition until it ..,.
197

Check ing and F illing
is empty or until no mo re fluid flows into the
tank.
~ Remove the canister and close the fi ller tube
c> page 198 , Completing AdBlue refill .
(D Note
Only use refi ll canisters that are approved for
your vehicle. Us ing other systems can cause
Ad Blue to leak.
@ Tips
- An authorized Audi dealer or authorized
Audi repair facility can te ll you which ref ill
can isters are approved for your vehicle.
- A permitted refill canister contains approxi­
mately 1.3 ga llons (5 liters) of AdB lue.
Completing AdBlue refill
Applies to: vehicles with selective catalytic reduction
C losi ng the filler neck
~ Turn the cap on the filler neck to the right with
the wheel wrench unt il the cap clicks into place.
This t ightens the cap to the specification o &
in Filling AdBlue on page 197, c> (D in Filling
AdBlue on page 197 .
~ The n press on the left side of the tank doo r un-
ti l it l atches.
After filling
The vehicle must be driven so that the system
recognizes that the Ad Blue was refilled . T his can
take severa l m in utes.
~ If there was no Ad Blue left in the tank and a
range of O mi (0 km) was shown in the d isplay,
switch the ign it ion on for about 30 seconds be­
fo re sta rting the engine.
(D Tips
Ad Blue can freeze at very low temperat ures .
If this happens, the system will not detect
that the Ad Blue was refilled a nd it will contin­
ue to inform yo u of the low Ad Blue level. The
message turns off as soon as the tank thaws
out again.
198
Catalytic converter
Applies to: vehicles with gasoline engine
It is very important that your emission control
system (catalytic converter) is func tioning prop­
erly to ensure that your vehicle is running in an
environmentally sound manner .
~ Always use lead-free gasoline c> page 191, Fuel
supply .
~ Never run the tank down all the way to empty.
~ Never put too much motor o il in your engine
c> page 204, Adding engine oil.
~ Never try to push- o r tow-start your vehicle .
The catalytic converter is an efficient "clean -up "
device built into the exhaust system of the veh i­
cle. The catalyt ic converter b urns many of the
po llutants in the exhaust g as befo re they are re­
l eased into the atmosphere.
The exclusive use of un leaded fuel is critically im­
po rtant fo r the life of the catalytic converte r and
prope r funct io ni ng of the engine.
_&. WARNING
The temperat ure of the exhaus t sys tem is
high, both when driv ing and a fter stopping
the engine.
-
- Never tou ch the exhaust tail pipes once they
have become hot. This cou ld resu lt in burns.
- D o not p ark or operate the vehicle in ar eas
where the hot exhaust system may come in
contact with dry g rass, brush, fuel spi ll or
other mate rial which can ca use a fire.
- Do not apply additiona l undercoating or
rustp roofing on or near the exhaust mani­
fold, exha ust pipes, cata lytic conve rter or
heat shields . D uring driving, the substance
used for unde rcoat ing could overheat and
cause a fire .
Cl) Note
-Be aware that just one tank f illing wit h
leaded fu e l w ill already seriously degrade
the performance of the catalytic converter.
- Do not exceed the correct engine oil leve l
c>page204.

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\.J ' -Do not drive until the fuel tank becomes
complete ly empty . The engine cou ld mis­
fire. Unburned fuel could also get into the
exhaust system and this cou ld cause the
catalytic converter to overheat.
- Do not switch off the ignition while the vehi­
cle is moving.
- Do not continue to operate your vehicle un­
der these conditions, as otherwise fuel can
reach the catalytic converter. This could re­
sult in overheating of the converter, requ ir­
i ng its replacement.
- To assure efficient operation of the Emis­
sion Control System:
- Have your vehicle maintained properly and
in accordance with the service recommen­
dations in your Warranty
& Maintenance
book let.
- Lack of proper maintenance as we ll as im ­
proper use of the vehicle will impair the
function of the emission control system and could lead to damage.
® For the sake of the environment
Even when the Emission Control System is op ­
erating properly, the exhaust gas can have a
sulfur-like exhaust gas smell under some op­
erat ing states. This depends on the su lfur
content of the fuel being used. Using a differ­
ent brand of fue l may help, or filling the tank
w ith lead-free super grade gasoline .
Diesel particulate filter
Applies to: veh icles with diesel engine
The diesel particulate filter filters nearly all of
the soot particles out of the exhaust. The filter
cleans itself automatically under normal driving
conditions . If the filter cannot clean itself (for ex­
ample , because you are only driving short distan­
ces), the fi lter becomes clogged with soot and
the
II symbo l for the diesel particulate filter il­
luminates
¢ page 17.
A WARNING
-Do not park your vehicle over flammable
materials such as grass or leaves because
-
Checking and Filling
the high temperature of the diesel particu­
late filter could start a fire.
- Do not apply an underbody protectant in the
exhaust system area or a fire could start.
Engine compartment
Working in the engine compartment
Special care is required if you are working in the
engine compartment
For work in the engine compartment, such as
checking and filling fluids, there is a risk of in­
jury, scalding, accidents, and burns. For this
reason, follow all the warnings and general
safety precaution s provided in the following in·
formation . The engine compartment is a dan­
gerous area on the vehicle.
¢ ,&..
A WARNING
= =--
- Turn the engine off.
- Switch the ignition off.
- Set the parking brake.
-Select the P selector lever position.
- Let the engine cool down.
- Never open the hood when there is steam or
coolant escaping from the engine compart­
ment, because there is a risk that you could
be burned. Wait until no steam or coolant is
escaping .
- Keep children away from the engine com­
partment .
- Never sp ill fluids on a hot engine. These flu­
ids (such as the freeze protection contained
in the coolant) can catch fire.
- Avoid short circuits in the electrical system.
- When working in the engine compartment,
remember that the radiator fan can switch
on even if the ignition is switched off, which
increases the risk of personal injury.
- Never open the cap on the coolant expan­
sion tank when the engine is warm . The
coo ling system is under pressure.
- To protect your face, hands, and arms from
hot steam or coolant, cover the cap with a
large cloth when opening.
199

Checking and Filling
-Do not remove the engine cover under any
circumstances . This increases the risk of
burns.
- If tests need to be performed with the en­
gine running, there is additional danger due
to moving components (such as the ribbed belt, alternator and radiator fan) and from
the high voltage ignition system.
- Do not under any circumstances give gas in­
advertently (for example, by hand from the
engine compartment) if the vehicle is sta­
tionary but the engine is running and a gear
is engaged. Otherwise, the vehicle will start
to move immediately and this could result
in an accident.
- Pay attention to the following warnings list­
ed when work on the fuel system or on the
electrical equipment is required.
- Do not smoke .
- Never work near open flames.
- Always have a working fire extinguisher
nearby
- All work on the battery or electrical system
in your vehicle can result in injuries, chemi·
cal burns, accidents or burns. Because of
this, all work must be performed
only by an
authorized Audi dealer or authorized Audi
Service Facility.
- To reduce the risk of electric shock and in­
jury, never touch the following components when the engine is running or is being start­
ed :
- Ignition cable
- Other components in the electronic high-
voltage ignition system
-If you must check or perform work on the
engine while it is running:
- Set the parking brake and place the selec­
tor lever in the P (park) position first .
- Always proceed with extreme caution so
that clothing, jewelry or long hair do not
become caught in the radiator fan, fan
belt or other moving components or do
not come into contact with hot compo­
nents. Tie back long hair before beginning
work and do not wear clothing that can
hang down into the engine.
200
-Limit your exposure to exhaust and chemi­
cals to as short a time as possible
c> A .
A WARNING
California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain or
emit chemicals known to the State of Cali­
fornia to cause cancer and birth defects and
reproductive harm . In addition, certain flu­
ids contained in vehicles and certain prod­
ucts of component wear contain or emit
chemicals known to the State of California
to cause cancer and birth defects or other
reproductive harm.
- Battery posts, terminals and related acces­
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.
(D Note
When filling fluids, be sure not to mix the flu­
ids up. Otherwise severe malfunctions and en­
gine damage will occur.
@:) For the sake of the environment
You should regularly check the ground under
your vehicle in order to detect leaks quickly. If
there are visible spots from oil or other fluids, bring your vehicle to an authorized Audi deal­
er or authori zed Audi Service Facility to be
checked.

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<..:l 'SI"
Opening/closing the hood
The hood is released from inside the vehicle.
Fig. 1 82 D rive r footwell: release lever
Fi g. 1 83 Roc ke r sw itc h under the hood
M ake sure the w iper arms a re not raised up from
the windshield . Otherwise the pa int could be
damaged .
Opening the engine compartment lid .. Wi th the driver's doo r open, pu ll the leve r be­
low the instrument panel in the direct ion of the
arrow c>fig.182 .
Checking and Filling
.. Raise the hood slightly c> ,& .
.. Press the rocker switch under the hood upward
¢fig. 183. This releases the catch .
.. Open the hood .
Closing the engin e compartm ent lid
.. Push the hood down until yo u over ride the
force of the strut .
.. Let the hood fall lightly into the latch.
Do not
press it in.
c> ,&.
A WARNING
-
-Never open the hood when there is steam or
coolant escaping from the engine compart­
ment, because there is a risk that you could
be burned. Wait unt il no steam or coolant is
escaping.
- For safety reasons, the hood m ust always be
closed securely while driv ing . Because of
this, a lways check t he hood afte r closing i t
t o make sure it is latched correct ly . T he
hood is latched if the front corners cannot
be lifted.
- If you no tice that t he hood is not latched
while you are d riving, stop immed iately and
close it, because driving when the hood is
not latched increases the risk of an accident .
201

Checking and Filling
Engine compartment overview
The most important check points.
Fig. 184 Typical location of the rese rvoir and the engine o il fil le r open ing
(D Jump start po int(-) with hex head screw
<::;> page 208, <::;> page 254
@ Ju mp start point(+) under a cover
<::;> page 208, ¢ page 254
® Engine oil label* with VW standard
<::;> page 202
@ Brake fluid reservoir ((0)) <::;> page 207
® Engine oil filling opening (~)¢page 204
@ Coolant reservoir (- L) ¢ page 206
(j) Washer fluid reservoir (0) ¢ page 209
The engine oil f illing opening (item@) may be
located in a differe nt area depending on the en­
gine version .
A WARNING
Read and follow the WARNINGS before
checking anything in the engine compartment
¢ .&. in Working in the engine compartment
on page 199.
202
Engine oil
Engine oil specifications
The engine oil used must conform to exact speci­
fications.
The service interval display in the instrumen t
cluster of your vehicle will inform you when it is
time for an oi l change. We recommend that you
have your oi l changed by an authorized Audi Serv­
ice Advisor.
If you must add oil between oil changes, use an
oi l that matches the Audi oil quality standard
listed on the sticker. The sticker is located at the
front of the eng ine compartment ¢
page 202,
fig. 184 .
Audi recommends
~Castrol /fg/j;Sf.g;fg f'r Audi recommends Longlife high performance
engine oil from Aud i Genuine Parts .,_

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\.J ' Using the proper engine oil is important for the
functionality and s ervice life of the engine. Your
engine was factory-filled with a high -quality oil
which can usually be used throughout the entire
yea r.
Note
Your Limited New Vehicle Warranty does not
cover damage or malfunctions d ue to failure
to follow rec ommended maintenance and use
requireme nts as s et forth in the Audi Owner's
Manual and Warranty & Maintenance booklet .
- Use only a high quality engine oi l that ex-
pressly complies with the Au di oil quality
standard specified for your vehicle's engine.
Using any o ther oil can cause serious engine
damage.
- Do not mix any lubricants o r other additives
into the engine oil. Doing so can cause en­
gine damage.
@ Tips
If you need to add oil and there is none availa­
ble that meets the Audi o il quality standard
your eng ine requ ires, you may add a total of
no more than 0 .5 qt (0.5 l) of a h igh-quali ty
"synthet ic"oil that meets the following speci ­
fications.
- Applies to: gaso line engine: ACEA A3 or
API SM with a viscosity grade of SAE OW-30,
SAE 5W-30 or SAE 5W-40.
- Applies to: diesel engine: ACEA C3 or API CF
with a viscosity grade of SAE OW-30 o r
SAE 5W-30 .
- For more information about engine oil that
has been approved for your vehicle, please
contact e ither your authori zed Audi dea ler
or Audi Customer Relat ions at
1 (800) 822-2834 or visit our web site at
www .audiusa .com or www .aud ica nada.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 lub rication and cool­
ing of in ternal engine componen ts, all internal
Ch eck ing and Filling
combustion engines consume a certain amo unt
of oil. Oil consumption vari es from engin e to en­
gine and may change s ignificantly over the life of
the engine . Typ ically, engines w ith a specified
break-in period (see¢
page 65) consume mo re
o il during the break -in per iod than they consume
after o il consumption has stab il ized .
Under normal cond itions, the rate of oil con ­
sump tion depends on the qu ality and viscos ity of
the oil, the RPM (revolutions per minute) at
wh ich the engine is operated, the amb ient tem­
perature and road co ndit ions. Further facto rs a re
the amount of oi l di lution from wate r condensa ­
tion or fuel resid ue and the oxidat ion level of the
o il. As any engine is subject to wear as mileage
builds up, the oil consumption may increase over
time unti l replac ement of worn components may
become necessary.
With a ll these variab les coming into play, no
standard rate of oil consumption can be estab ­
li sh ed or sp ecified . There is no alternative to reg­
u lar and frequent checking of the oi l level, see
Note .
If the yellow engine oil leve l warning symbo l in
the instr ument cluster
Ill lights up, yo u should
check the oi l level as soon as possible
¢
page 204. Top off the o il at your earliest con­
venience ¢
page 204 .
A WARNING
-Before you check anyt hing in the engine com -
partment, always read and heed all WARN­
INGS
¢ .&. in Working in the engine compart­
ment on page 199.
{(D Note
Driving w it h an insufficient oil level is likely to
cause severe damage to the eng ine .
(D Tips
-The oil pressure wa rn ing display. is not
an indicator of the o il leve l. Do not rely on
i t . Instead, check th e oil level in your en­
gine at regular interval s, preferably each
time you refuel, and alway s before going
on a long trip .
203

Check ing and F illing
- If you have the impression your engine con ­
sumes excessive amounts of oil, we recom­ mend that you consu lt your Audi dealer to
have the cause of your concern properly di­
agnosed . Keep in mind that the accurate
measurement of oil consumption requi res
great care and may take some time . Your
Audi dealer has inst ructions about how to
measure oil consump tion accurate ly.
Checking the engine oil level and adding
engine oil
The engine oil level can be checked in the Info­
tainment system
F ig. 18 5 Eng ine co mpar tment : en gin e o il fille r open ing
cove r
Obse rve the sa fe ty precau tions ¢&. in Working
in the engine compartment on page 199 .
Checking the engine oil level
.,. Park the vehicle on a level surface .
.,. Sh ut the engine off w hen it is warm . Wait ap­
prox imately two m inutes so tha t the engine oil
can flow back in to the o il pa n .
.,. Switc h only the ignit ion back on.
.,. Se lect: the
ICARI function button > ( Car )* Sy s­
tems
control b utton > Service & checks > Oil
level.
.,. Read the oil level in the Infota inment system.
Add engine oil if the bar in the oil leve l indica­
tor is just before "min".
Adding engine oil
.,. Turn the eng ine off .
.,. Unscrew the engine oil filler opening cap~
¢ fig.185, ¢page 202, fig.184 .
.,. Carefully add 0 .5 quart (0 .5 liter) of the correct
o il ¢ page 202.
204
.,. Close the eng ine oi l filler opening ca p~ -
.,. Close the hood, restart the ignition after two
m inutes and read t he current o il level in the In­
fotainment system.
A WARNING
- When adding oil, do not let oil dr ip onto hot
engine components . This inc reases the risk
of afire.
- You must sea l the cap on the oi l filler open­
ing correct ly so that oi l does not leak out
on to the hot e ngine and exha ust system
w hen t he e ngine is runni ng, bec ause this is
a fire ha zar d.
- Always clean s kin thoroughly if it comes into
con tact with eng ine oil.
0 Note
- The engine o il level must not be under the
" min " mark ing, beca use this increases the
r isk of engine damage.
- If the message
Oil level is too full. Please
reduce oil level.
appea rs, there is too m uch
o il i n t he engi ne a nd there is a risk of cata ­
lyt ic converter and engine damage . D o no t
sta rt the eng ine. Co nta ct an a uth o rize d Aud i
dealer or authorized Audi Service Facility to
have excess engine oil extracted if necessa­
ry.
- Do not mix any ad ditiona l lubr icants into
the engine oil. Damage caused by such add i­
t ives is not covered by the wa rranty .
@ For the sake of the environment
- Oil sho uld never enter the sewer system or
come into contact with the ground .
- Pay attention to lega l req uiremen ts when
disposing of empty o il containers .
(D Tips
-Th e oil leve l in dica tor in the inst rument
cl uster d is p lay is only an i nformationa l dis ­
play. If the o il level is too low, a minim um
oil warn ing appears in the instrument clus­
ter . Add o il and close the hood. The c urrent
oil leve l is d isplayed in the Infotainment

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\.J - system the next time the ignition is
switched on .
- The engine oi l consumption may be up to
0.5 quart/600 miles (0.5 liter/1,000 km),
depending on driving style and operating
conditions. In RS models, the oil consump­
tion may be up to 1 qt/600 mi (0.8 L/ 1,000 km). Consumption may be higher
during the first 3,000 miles (5,000 km). Be­
cause of this, the engine oil level must be
checked regular ly.
It would be best to check
each time you ref uel your veh icle and befo re
l ong d rives.
Changing the engine oil
We recommend that hove your oil changed by on
authorized Audi dealer or a qualified service sta­
tion .
Before you check a nyth ing in the eng ine compart­
ment,
alway s re ad and heed all WARNING S 9 &.
in Working in the engine comportment on
page 199.
The engine oil must be changed according to the
intervals specified in you r Warranty
& Mainte­
n ance booklet. This is very impo rtant because the
l ub ricating properties of oil diminish gradually
during normal vehicle use.
Unde r some ci rcumstances the e ngine o il should
be cha nged more frequently . Change oil mo re of­
ten if yo u drive mostly short distances, operate
the vehicle in dusty areas or under predominant ly
stop-and-go traffic conditions, or have your vehi­
cle where temperatures remain below freezing
for extended periods.
Detergent additives in the oil will make fresh oil
l ook dark after the engine has been running for a
short time. Th is is normal and is not a reason to
change the oil more often than recommended.
Because of the problem of proper disposa l, along
with the special tools and necessary expertise re­
q ui red, we strongly recommend that you have
your oil changed by an authorized
A ud i dealer or
a qualified service station.
If you choose to chang e your o il your self, please
note the following important information:
Ch eck ing and Filling
A WARNING
To reduce the risk of persona l injury if you
must change the eng ine oil in you r vehicle
yourself:
- Wear eye protect ion.
-
- To reduce the r isk of burns from hot engine
oil, let the engine cool down to the touch.
- When remov ing the oil drain plug w ith your
f ingers, stay as far away as possible. Always
keep your forearm parallel to the ground to
help prevent hot oil from running down your
arm.
- Drain the oil into a container designed for
this purpose, one la rge enough to hold at
least the tota l amount of oi l in you r engine .
- Engine oil is poisonous. Keep it we ll out of
the reach of children.
- Continuous contact with used engine o il is
harmf ul to your skin. Always protect your
skin by washing oil off thoroughly with soap
and wate r.
Q) Note
Never mix oil additives with your engine oil.
These additives can damage your engine and
adverse ly affect you r Audi limited New Vehi­
cle Warranty.
@ For the sake of the environment
- Before chang ing your oi l, first make sure
you know where you can properly d ispose of
the used oil.
- Always dispose of used e ngine o il properly .
Do not dump it on ga rden soil, wooded
areas, into open streams o r down sewage
dra ins.
- Recycle used e ngine o il by ta king it to a used
eng ine oil collection fac ility in yo ur area, or
c ont act a se rvice station.
Cooling system
Coolant
The eng ine cooling system is fi lled w ith a mixture
of purified water and coolant additive at the fac-
tory. This coolant m ust not be not changed . .,._
205

Check ing and F illing
The coolant leve l is monitored through the. in­
dicator light ¢
page 14. However, we do recom­
mend occasionally check ing the coo lant level
manually.
I f you must add coolant, use a mixture of water
and coolant additive. Mixing the coolant additive
with d istilled water is recommended.
Coolant additiv e
The coolant addi tive is made of anti-freezi ng and
corros ion protection agents. Only use the fo llow­
ing coolant additives . These additives may be
mixed with each other.
Coolant additive Specification
Gl3 TL 774)
Gl2++
TL 774 G
The amount of coolant add itive that needs to be
mixed w ith water depends on the climate where
the vehicle will be operated. If the coolant addi­
tive percentage is too low, the coolant can freeze
a nd damage the engine.
Coolant
Freeze protec·
additive tion
Warm reg ions min. 40% m in. -13 ° F
max. 45% (-25 °C)
Cold regions min. 50% max . -40 °F
max . 55% (-40 °C)
([)
Note
-Before the start of winter, have your author­
ized Audi dealer or authorized A udi Se rvice
Fac ility check if the coolant additive in you r
vehicle matches the percentage approp riate
fo r the clim ate. Thi s is especially important
when driving in co lder climates .
- If the approp riate coolant additive is not
available in an emergen cy, do no t add any
other additive. You cou ld damage the en ­
gine. If this happens, only use water and re­ store the correct mixture ratio with the
spec ified coolant additive as soon as possi­
ble.
- Only refill with new coo lant.
- Radiator sealant must not be mixed w ith
the coo lant .
206
· Adding coolant
F ig. 186 En gin e compartment : coolant exp ansion tank
cover
-N
-~
~
Observe the safety precautions ~ .&. in Working
in the engine compartment on page 199.
Check ing the engin e coolant level
Park the vehicle on a leve l surface.
.,. Switch the ignit ion off.
.,. Read the coolant level on the coolant expansion
tank ¢
page 202, fig . 184. The coolant level
must be betwee n the MIN and MAX mark ings
when the e ngine in co ld. When the engine is
wa rm it c an be slightly above the MAX marking.
Adding coolant
Requirement: there must be a residual amount of
coolant in the expansion tank ¢(D .
.,. Let the engine cool down .
.,. Place a cloth over the coolant expansion tank
cap and unscrew the cap counterclockw ise
¢ .8_ .
.,. Add coo lant m ixed in the correct rat io
¢ page 205 up to t he MAX mar king.
.,. Make sure that the f luid level remains stab le.
Add mo re coolant if necessary.
.,. Close the cap securely .
Coolant loss usually ind icates there is a lea k. Im­
med iate ly dr ive your vehi cle to a n author ized
Audi dealer or author ized A udi Service Fac ility
and have the cooling system inspected . If the
cooling system is not leaking, a loss can come
from the coolant boiling through overheating
and being pushed out of the cooling system.