
..... N
co
er::
co
.....
¢ fig. 192. Now you can open the fuel fi ller flap
as usual.
Selective catalytic reduction (AdBlue)
General information
Applies to vehicles: with selective catalyt ic reduction
In vehicles with se lective cata lytic reduction, a
urea solution (Ad B lue) is injected into the ex
haust system before a nitrogen ox ide catalytic
converter to reduce nitrogen emissions.
The AdBlue is carried in a separate tank in the ve
hicle. The Ad Blue usage accounts for approxi
mately 0.5% to 2.5% of the diesel fuel that is
used.
When a message about refilling the Ad B lue ap
pears in the instr ument cluster disp lay, you must
refill the Ad Blue yourself or have it refilled by an
author ized Audi dealer or author ized Audi Service
Facility
¢ page 218.
(l) Tips
-The display indicates the distance remain ing
that can be driven
¢page 217. If the AdBl
ue tank is complete ly empty, the engine w ill
not sta rt again after the ignition is sw itched
off.
- Ad Blue is req uired by law to operate this ve
hicle.
Messages in the instrument cluster display
App lies to vehicles: with selective catalyt ic reduction
The display indicates if the Ad Blue level is low or
if there is a system malfunction .
AdBlue level low
You will be informed if the AdBlue in the tank
d rops below a certa in leve l.
AdBlue f) 1500 mi (2400 km) Refill Ad Bl-
ue. See owner 's manual
This message appea rs when there is only eno ugh
Ad B lue left to drive the distan ce indi cated in the
instr ument cluster . Fil l the Ad B lue.
Fuel and R efueling
AdBlue /9 600 mi (1000 km) Refill Ad Blue!
No restart in 600 mi (1000 km )! See owner's
manual
T h is mess age appears when there is on ly enough
Ad B lue left to dr ive the distance indicated in the
instrument cluster. Fill the AdBl ue . Otherwise
t h e engine will not start again if yo u stop it once
the d istance ind icated has been driven.
Refill AdBlue! No re
start! See owner 's manual
Th is message appears when t he Ad B lue tank is
empty. Fill the AdBlue. Otherwise you wi ll not be
able to start the engine again once you stop i t.
T he Ad Blue must be refilled when the amount in
t h e tank has reache d the m inimum leve l
¢ page 218, Filling AdBlue.
Incorrect filling/system malfunct ion
A message appea rs if the Ad Blue tank was fi lled
with a flu id other tha n Ad Blue and the system
has detected tha t the tank was filled incorrectly,
o r i f the re is a system ma lfu nction.
Ad Blue,/' 600 mi (1000 km) Ad Blue:
Fault ! No restart in 600 mi (1000 km )! See
own er' s manual
This message appears when it is on ly possible to
drive the distance indicated in the instrument
cluster . Dr ive to the nea res t author ized Audi
dealer or authori zed A udi Se rvi ce Fac ility to have
the malfunc tion cor rected. Otherw ise the eng ine
will not sta rt aga in if you stop it once the dis
tance indicated has been driven .
AdBlue: Sy stem
fault . No restart! See owner 's manual
This message appears if the system has detected
that the tank was fi lled incor rect ly or that there
is a ma lf u nct ion. Drive immed iate ly to the near
e st au thor ized A udi dealer or au thori ze d Audi
Se rvice Facility to h ave the ma lf u nction correct
ed. Otherwise you wi ll not be able to start the en
gine again once yo u stop it.
217

Fuel and R efue li ng
Filling AdBlue
Applies to veh icles: w ith selective cata ly ti c reduction
Fig. 193 Right rear side of the vehicle: removing the AdBl
ue cap
The Ad Blue tank opening is located near the die
sel tank opening. Add at least 1 gallon (3.8 lit
ers) of Ad Blue. This is the minimum amount re
quired to ensure the system detects the refilling
and to start the engine. You can fill a maximum
of 6 gallons (23 liters).
Requirement: The request to add Ad Blue must
appear in the instrument cluster display.
• Switch the ignition off.
• Open the tank door
r::!) page 215.
• Turn the filler neck cap counter-clockwise using
the wheel wrench from the vehicle tool kit to
remove it
¢ fig . 193.
• Fill the Ad Blue with the bottle¢ page 218 or
the canister ¢
page 219.
A WARNING
AdBlue can irr itate the skin, eyes and resp ira
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 AdBl ue and do not d ilute it
wi th water.
- Do not add Ad Blue to the diesel ta nk or add
diesel f uel to the AdBlue tan k. Do not start
the engine under any circumstances if the
wrong fue l is filled in the tank. There is a
risk of damaging the fuel tank system and
218
the engine . See an authorized Audi dea le r or
authorized Audi Service Facility for assis
tance.
- Ad Blue attacks surfaces such as painted ve
hicle components, p lastic and carpet. Re
move the fluid as quickly as possible with a
damp cloth and plenty of cold water. If the
AdBlue has a lready crystall ized, use warm
water and a sponge. Ad Blue residue that is
not removed w ill crystall ize and can damage
t he affected s urface.
- Do not store refill bottles or canisters per
manently in the vehicle. If the container
leaks, the escaping Ad Blue could damage
the vehicle inte rior.
- Do not allow Ad Blue to come into contact
with cloth ing. If t here is contac t w ith the
fluid, flush immediately wi th plenty of wa
ter.
(0 Tips
Fo llow the AdBlue manufacture r's instruc
tions for use and storage.
Refilling Ad Blue w ith a bottle
App lies to vehicles : wi th selec tive cata lyt ic reduct ion
• Remove the cap from the refill bott le ¢ &. in
Filling AdBlue on page 218,
¢ 0 in Filling
AdBlue on page 218.
• Posit ion the bottle on the filler 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 unt il it is empty or until fluid stops
flowing into the tank.
• Remove the bottle and close the filler neck
¢ page 219, Completing .
CD Note
Only use refill bott les tha t are approved for
you r vehicle. Using other systems can cause
Ad B lue to leak.
(0 Tips
- You can obtain refill bottles from an author
ized Audi dea le r or authorized Audi Service
Facility.

-A permitted refill bott le contains approxi
mately 0.5 gallons (1.9 liters) of Ad Blue.
Refilling Ad Blue with a canister
A pp lies to vehicles: with selective ca taly tic reduc tion
®
+®
F ig . 194 Ca nister wi th att ach ab le hose
.,. Remove the cover on the refi ll canis ter ¢.&. in
Filling AdBlue on page 218, ¢(Din Filling
AdBlue on page 218 .
.. Secure the end of the hose (I) on the opening in
the can ister @ by turning the hose to the right.
.. Remove the cap @from the other end of the
hose @.
.. Pos ition the end of the hose@on the f iller
neck in the vehicle and turn the hose to the
right to tighten it.
.,. Lift the caniste r up and then tip it. Continue
holding the ca nister in a tipped position unt il it
is empty or until no more fluid flows into the
tank .
.. Remove the canister and close the f iller neck
¢ page 219, Comple ting .
(D Note
On ly use refi ll canisters t hat are approved for
your veh icle. Using other systems can cause
Ad Blue to leak.
(D Tips
- An authorized Audi dealer or authorized
Audi repa ir facility can tell you which ref ill
canisters are approved for your vehicle.
- A pe rm itted refill canister contains approxi-
~ mately 1.3 gallons (5 liters) of AdBlue.
co
er::
co
,....,
Completing
App lies to vehicles : wi th selective cata lytic re du ctio n
Closing the filler neck
.. Turn the cap to the r ight on the fille r neck w ith
the wheel w rench until the cap clicks into place .
This tighte ns the cap to the specification ¢
&,
in Filling AdBlue on page 218 , ¢@ in Filling
AdBlue on page 218 .
.. Then press on the left side of the tank door un-
til you hear it lock.
Afte r filling
T he vehicle must be driven so that the system
recogni zes that the Ad Blue was refilled. This
process can take several minutes.
.,. If the re was no AdB lue left in the tank and a
range of
O mi (0 km ) was shown in the d isplay,
sw itch the ignition on for about 30 seconds be
fore starting the engine .
(D Tips
Ad B lue can freeze at very low temperatures .
If this happens, the system will not detect
that the Ad B lue was refilled and it will contin
ue to inform you of the low AdBl ue leve l. This
message w ill turn off as soon as the tank de
frosts aga in.
219

,....,
N
co
er::
co
,....,
ponents 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 compart
ment. Wait until no steam or coolant can be
seen or heard before carefully 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 auxiliary
electric fan is temperature controlled and
can switch on suddenly.
- Never open the coolant reservoir cap when
the engine is still warm. The coolant system
is pressurized and hot coolant 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 electrical
system is necessary:
- Always disconnect the battery.
- Never smoke or work near heaters or open
flames. Fluids in the engine compartment
could start a fire.
- Keep an approved fire extinguisher imme
diately available.
- To avoid electrical shock and personal injury
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 transmission
to P (Park).
Checking and Filling
-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 contacting 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 chemi
cal hazards
~ .&, .
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 .
(I) Note
When adding fluids, always make sure that
they are poured into the proper container or
filler opening, otherwise serious damage 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 fluids, have
your vehicle inspected by an authorized Audi dealer.
221

Checking and Filling
@ Tips
-The oil pressure warning display. is not
an indicator of the oil level. Do not rely on
i t. Instead , check the oil level in your en
gine at regular intervals, preferably each
time you refuel, and always before going
on a long trip.
- If you have the impression your engine con
sumes excessive amounts of oil, we recom
mend that you cons ult an autho rized Aud i
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 instruc
tions about how to measure oil consump
tion accurately.
Checking the engine oil level
Fig. 198 D is play: Oil level indicator
Read oil level
• Park yo ur vehicle so that it is hor izonta lly level.
• Shut the engine off when it is at operating tem-
perature.
• Switch only the ignition back on.
• Wait approx . two minutes.
• Se lect:
ICARI function button > Oil level. Or
• Se lect:
ICARI funct ion button> Car systems *
control button > Servicing & checks > Oil level.
• Read the oil level in the radio or MMI* Display
¢
fig. 198. Add engine o il if the bar of the oil
level indicator is near "Min"
Q page 224.
The oil level needs to be checked at regular inter
vals. The best times to do this are whenever you refuel and pr ior to long trips .
224
Depending on the way the vehicle is driven and
the operating conditions, oil consumption can be
up to a 1/2 quart per 600 miles (0.5 liter per
1,000 km). Consumption may be higher w it hin
the first 3,000 miles (5,000 km).
(D Tips
The o il level indicator in the radio or MMI*
D isp lay is only an information display. If the
oil level is too low, a m inimum oil warning ap
pears in the instrument cluster. Add oil
¢
page 224. If the hood has been opened,
the current oil level is show n in the instru
ment cluster the next time the ignition is
switched on.
Adding engine oil
er neck
Before yo u check anything in the engine compart
ment,
always read and heed all WARNINGS
¢ .&. in Working in the engine compartment on
page 220.
• Shut the engine off.
• Unscrew the cap
't=r. to the engine oil f illing
hole ¢
fig. 199, ¢ page 222, fig. 197.
• Carefully top off with 0.5 quarts (0.5 liters) of
the appropriate oil¢
page 222.
• Check the oil level again after two minutes
Q page 224, Checking the engine oil level.
• Top off the oil, if necessary .
• Scr ew the cap back on the filling hole.
& WARNING
- While topping off, the oil must not come in
contact with hot engine parts - fire hazard!

.... N
co
er::
co
....
.,. Turn
off the ignition.
.,. Read the engine coolant level from the coolant
expansion tank
c> fig . 200, c> page 222,
fig. 197. With a cold engine, the coolant level
should be between the "MIN" and "MAX" mark
i ngs . When the engine is warm, the level may
be s light ly above the
"MAX " marking .
T he location of the coolant expans ion tank can be
seen in the engine compartment illustrat ion
i=> page 222.
To obtain an accurate reading, the engine must
be sw itched
off.
The expansion tank in your vehicle is equipped
with an electric coolant level sensor.
When the coo lant level is too low, the warning
light in the Auto-Check System
c:> page 29 wi ll
blink until you add coolant and the level has been
restored to normal. Even though there is an e lec
tr ic coolant level sensor, we still recommend you
check the coolant level from time to time.
Coolant loss
Coolant loss may indicate a leak in the cooling
syst em. In the event of coolant loss, the cooling
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 coo lant is exceeded as a re
sult of overheat ing .
(D Note
Do not add any type of radiator leak sealant
to your veh icle's engine coolant. Adding radia
tor repair fluid may adversely affect the func
tion 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 anyth ing in the eng ine compart
ment,
always read and heed all WARNINGS
Checking and Filling
c> .&. in Working in the engine compartment on
page
220 .
Requirement: The re must be a residual amount
of coolant in the expans io n tank
c>@.
.,. Turn off the engine .
.,. Let the engine cool down.
.,. Place a thick rag over the coolant expansion
ta nk
c:> page 226 , fig. 200 and carefully turn
the cap counter-clockwise
c> _&. .
.,. Add coo lant mixed in the correct ratio
c:> page 226, Coolant up to the MAX marking .
.,. Make sure that the f luid level remains stable.
Add more coolan t if necessary .
.,. Twist the cap o n again
tightly.
Replacement engine coolant must conform to ex
act specifications
c:> page 226, Coolan t.
We recommend using only coolant addit ive Gl2 +
+ , Gl3
or in an emergency Gl2+. Do not use a
different additive . In an emergency use plain wa
ter until you can get the correct addit ive and can
restore the correct ratio. This should be done as
soon as possible.
If you have lost a considerable amount of coo l
ant, then you shou ld add cold antifreeze and cold
water only whe n the engine is cold.
Always use
new e ngine coolant when refilling.
Do not fill coolant above the "MAX " mark. Excess
coolant will be forced out through the pressure
relief valve in the cap when the engine becomes
hot.
A WARNING
-- The cooling system is under pressure and
can get very hot. Reduce the risk of scalding
from hot coolant by following these steps .
- Turn
off the eng ine an d 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.
- Tu rn the cap slowly and very carefully in a
counter-clockwise direction whil e applying
light, downward pressure on the top o f
the cap .
~
227

Checking and Filling
-To avoid bein g burned, do not spill anti
f reeze or coolant on the exhaust system or
hot engine parts. Under certain condi
tions, the ethylene glycol in engine cool ant can catch fire.
- Antifreeze is poisonous . Always store anti
freeze in its original container and well out
of the reach of children .
- If you dra in the coolant, it must be ca ught
and safely stored in a proper conta iner
clearly marked "poison".
(D Note
- Do not add coolant if the expansion tank is
empty . Air cou ld enter the cooling system
and damage the eng ine .
If this is the case,
do not continue dr iving . Seek professional
ass istance.
- Coolant pollutes the e nvironment a nd could
cause an eng ine fire. Excess coolant will be
fo rced o ut through the pressu re relief valve
i n the cap when the eng ine be comes hot .
- If, in an emergency, o nly wate r can be add
ed, the co rrect ratio between water and an
tifree ze ~
page 226 mus t be resto red as
soon as possib le .
@) For the sake of the environment
Drained cool ant sho uld not be reused. Always
dispose of used coo lant w hile obse rving all
environmenta l regulatio ns.
Radiator fan
The radiator fan switches on automatically by it
self.
The radiator fan is dr iven by the eng ine v ia the V
be lt . The visco us cl utch regula tes the speed of
the fan acco rding to the tempera ture of t he cool
ant.
An aux iliary ele ct ric radiator fan* swit ches on and
off depending on coolant tempera tu re and o ther
ve hicl e operat ing cond itions .
After you switch the engine off , the auxiliary fan
can cont inue runn ing fo r up to 10 minutes - even
228
with the ignition off . It can even switch o n aga in
l ater by itself~.&. , if
- the tempera ture of the engine coolant rises d ue
to the hea t build- up from the engine in the en
gine compartment, or
- the engine compa rtme nt heats up bec ause the
veh icle is parked in intense s unlight.
A WARNING
- To reduce the r isk of personal injury never
touch the radiator fan.
- The a uxiliary e lectric fan is temperat ure
controlled and can switch on suddenly even
when the engine is not runn ing .
-
-The a uxiliary radiator fan switches on a uto
mat ically when the eng ine coolant reaches a
certain temperature and will continue to r un
until the coo lant temperature drops.
Brake fluid
Checking brake fluid level
The broke fluid level con be checked with o quick
glance .
Fig. 20 1 En g in e com par tmen t: cov er on t he br ak e fluid
r e servo ir
N
N
-N
"' CIO a,
Befo re you check anything in the engine compart
ment,
always read and heed all WARNINGS
~ .&, in Working in the engine comportment on
page 220 .
.,. Read the brake fluid level from the bra ke f luid
rese rvoir ~
fig. 201, <> page 222, fig . 197. The
brake fl uid leve l must be between the "M IN"
and "MAX " mark ings .

Checking and Filling
Disconnecting the battery terminals
Some vehicle functions (power window regula
tors, for example) are lost if the battery termi
na ls are disconnected. These functions have to be
relearned after the battery terminals are con
nected again. To prevent this, the battery should
only be disconnected from the vehicle e lectrical
system when absolutely necessary for repairs.
Vehicles not driven for long periods
If you do not drive your vehicle over a period of
several days or weeks, electrical components are
gradually cut back or sw itched off. This reduces
energy consumption and ma intains starting ca
pab ility over a longer period
c::> page 195 .
Take into consideration that when you unlock
your veh icle, some convenience functions, such
as the interior lights or the power seat adjust
ment, may not be available. The convenience
functions will be available again when you turn
on the ignition and start the engine.
Winter operation
During the winter months, battery capacity tends
to decrease as temperatures drop. This is be
cause more power is also consumed while start
ing, and the head lights, rear window defogger,
etc., are used more often.
Avoid unnecessary power consumption, particu
larly in city traffic or when traveling only short
d istances . Let your authorized Audi dealer check
the capacity of the vehicle battery befo re winter
sets inc::>
page 231. A well cha rged battery w ill
not only preven t starting problems when the
weather is cold, but will also last longer.
Working on the battery
Be especially careful when working on or near
the battery.
The batte ry is located in the luggage compart
ment under the floor. Before you check anything
in the luggage compartment,
read and heed all
WARNINGS
c::> & .
Hybr id drive*: you can find important information
about the high volta ge battery unde r
c::> page 97.
230
Always heed the safety warnings , when working
on the vehicle battery or the vehicle electrical system to prevent injury.
The following WARNINGS are very important
when working on the battery :
Always heed the following WARNING SYM· BOLS and safety precautions when working on
the battery .
®
Always wear eye protection .
A
Battery acid contains sulfuric acid. Al-
ways wear gloves and eye protection .
@
No
• sparks
• flames
- smoking.
~
When a battery is charged, it produces
hydrogen gas which is explosive and
could cause personal injury.
®
Always keep the battery well out of reach
of children .
.b WARNING
-
Whenever working on the battery or on the
e lectrica l system, there is the risk of injury,
accident and even fire. Read and heed the fol
lowing WARNINGS:
- Always wear eye protection . Do not let bat
tery acid or any lead particles get on your
skin or clothing. Shield your eyes. Explosive
gases can cause blindness or other injury.
- Battery acid contains sulfuric acid. Sulfuric
acid can cause blindness and severe burns.
-A lways wear glo ves and eye protection. Do
not tilt the battery because acid could leak
out of the ventilation openings.
- If you get battery acid in yo ur eyes or on
you r skin, immediate ly rinse with cold wa
ter for several minutes and get medical at
tention .
- If you should ingest any battery acid , seek
medical attention immediate ly.
- Do not expose the battery to an open flame,
elec tric sparks or an open light.
- Do not smoke.
~