Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting the engine .
If a vehicle with a conventional energy system
is not driven for a long period of time , the bat
tery is discharged by idling current consumers
(e.g. immobilizer). In ce rtain c ircumstances it
can result in there being insuff icient ene rgy
avai lab le to start the engine .
Intell igent energy management in your vehi
cle hand les the d istribution of electrical ener
gy. Starting ab il ity is markedly improved and
the life of the battery is extended.
Basically, energy management consists of
batt ery di agno sis, idlin g current man ag e
m ent
and dyn ami c en ergy m anage ment .
Batter y diagnosis
Battery diagnosis continuously determines
the state of the battery . Sensors determ ine
battery vo ltage, battery current and battery
temperature. This dete rm ines the current
state of charge and the powe r of the battery.
Idling curr ent man agement
Idling current management reduces ene rgy
consumption while the vehicle is stand ing .
W ith the ignition switched off, it cont ro ls the
energy supply to the va rious electr ical compo
nents . Data from battery diagnosis is consid
ered.
Depending on the battery's state of charge,
i nd ividua l consumers are gradual ly t urned off
to prevent excess ive d ischarge of the bat tery
and thus maintain starting capability .
Dynamic en ergy management
While the vehicle is being driven, dynamic en
e rgy management dist ributes the energy gen
e rated according to the needs of the individu
a l components.
It reg ulates cons umption, so
that more electrical energy is not being used
Int ellig ent technolog y 193
than is being generated and ensures an opti
mal state of charge for the battery.
(0 Tips
- But even energy management canno t
negate the limits of physics . Consider
that the power and life of a battery are
limited .
- If starting ability is threatened, the indi
cator light (•)
;:i ppears ~ page 17.
What you should know
The highest priority is given to maintaining
starting capability.
T he bat tery is severe ly taxed in short-distance
driving, in city traffic and during the cold time
of year. Ab undant electrical energy is re
quired, but on ly a little is generated .
It is also
critica l if the engine is not running and electri
ca l components are turned on . In this in
stance energy is be ing consumed but none is
being generated .
It is in precisely these situations that you will
notice energy management active ly regulat
ing the d istribution of energy.
V ehicle stand s for an ex tend ed peri od
If you do not drive your vehicle over a period
of severa l days or weeks, e lectrica l compo
nents are gradually cut back or switched off.
This reduces energy consumption and ma in
ta ins start ing capability over a longer period .
Some of the convenience functions may not
operate, such as the interior l ights or the
power seat adjustme nt. The convenience
funct ions w ill be available again when you
swi tch on the ignition and sta rt the eng ine .
With the eng in e turn ed off
If you listen to the radio, for example, w ith
the engine tu rned off or use other MMI func
tions, the battery is be ing d ischarged.
If starting capability is jeopardized due to en
ergy consumption, the following warning ap- pears in the MM I display: ..,.
•
•
196 Driving and en vironm ent
8_ WARNING
After driving through water, mud, slush,
etc ., the brakes may be slow to take effect
because of wet brake rotors and pads . Dry
the brakes first by braking carefully to re
store the full braking effect.
(D Note
Vehicle components such as the engine,
transmiss ion, suspension or electrical sys
tem can be severely damaged by driving
through wate r.
@ Tips
- Check the depth of the water before dr iv
i ng through it .
- Do not stop the veh icle, dr ive in reverse
or switc h the engine off when driving
t hr ough water .
- Keep in mind that oncoming vehicles
may c reate waves that raise the water
l evel and make it too deep fo r you r vehi
cle to dr ive through safely.
-
- Avoid dr iving thro ugh salt water because
i t can ca use corrosion.
Catalytic converter
It is very important that your emission con
trol system (catalytic conv ert er) is function
ing properly to ensure that your vehicle is run
ning in on env ironm entally sound manner.
,,. Always use lead-free gaso line Q page 209,
Fuel supply .
,,. Never run the tank down a ll th e way to emp
ty.
,,. Never put too much moto r oil in your engine
Q page 219, "t':::r. Adding engine oil .
,,. Never try to push -or tow -start your ve hicle .
T he cata lytic converter is an eff ic ient "clean
up" device built in to the exhaust system of
the vehicle . The catalytic converter burns
many of the polluta nts in the exhaust gas be
fore they are released into the atmosphe re . The exclus
ive use of unleaded f uel is critica lly
important for the life of the catalytic conv ert
er and p roper funct ion ing of the eng ine .
A WARNING
=
-The temperature of the exhaust system
is high, both when driving and after stop
p ing the eng ine .
- Never touch the exhaust tail pipes once
they have become hot. This could result
in burns.
- Do not park or operate the vehicle i n
areas where the hot exhaust system may
come in co ntact with dry grass, brush,
fue l spill or other material wh ich can
cause a fire .
- Do not app ly additional undercoating or
r u stp roofing on or nea r the exhaust
manifold, exhaust pipes, cataly tic con
ver ter or he at s hields. Dur ing driv ing, the
substance used fo r undercoating could
overheat and cause a fire.
CI) Note
- Be aware tha t just o ne tank filling with
leaded fu el w ill alre ady ser io usly de
grade the performance of the cata lytic
converter .
- Do not exceed the cor rect engine oil level
Q poge 219.
-Do not drive until the fuel t ank becomes
comple tely empty . The engine cou ld mis
fire . Unburned fuel could also get into
the exhaust system and th is co uld cause
the catalytic converter to overheat.
- Do not turn off the ignition while the ve
hicle is mov ing.
- Do not contin ue to ope rate your veh icle
under these conditions, as otherwise fuel
can reach the catalyt ic converter. Th is
co uld result in overheating of the con
verter, requir ing its replacement.
- To assure efficient operation of the Emis -
sion Control System: .,..
Vehicl e ca re a nd cl eanin g 205
A WARNING
-Only wash the vehicle when the ignition
is off and follow the instructions from
the car wash operator to reduce the risk of accidents .
- To reduce the r isk of cuts, protect your
self from sharp metal components when
wash ing the underbody or the inside of
t he wheel housings.
- After washing the vehicle, the braking ef
fec t may be delayed due to mo isture on
the brake rotors or ice in the winter. The
brakes must be dried first with a few
careful brake applications.
Q) Note
- If you wash t he vehicle in an automatic
car wash, yo u must fold the exterior m ir
rors in to reduce the r is k of damage to
the mirrors. Power folding exterior mir
rors* must only be folded in and out us
ing the power folding function.
- To prevent paint damage, do not wash
the vehicle in direct sunlight . -
To reduce the risk of damage to the sur
face, do not use insect removing spong
es, kitchen sponges or similar items.
- Matte finish painted vehicle compo
nents:
- To reduce the risk of damage to the surface, do not use polishing agents or hard wax.
- Never use car wash cycles that apply protective wax.
It can destroy the
matte fi nish effect.
- Do not place any stickers or magnet ic
signs on vehicle parts painted w ith
matte fi nish paint. The paint cou ld be
damaged when the stickers o r magnets
are removed.
@ For the sake of the environment
Only wash the vehi cle in facilities spec ial ly
designed for that purpose . This will red uce
the risk of dirty water contam inated with
oil from entering the sewer system.
Cleaning and care information
When cleaning and caring for individual vehi
cle components, refer to the fo llow ing tables .
The information contained there is s imply rec
ommendations. For quest ions or for compo- nents
that are not listed, refer to an author
ized Audi dea ler or qualified workshop. A lso
fo llow the information found inc>,& .
Cle anin g exter ior
Component Situation Solution
Wiper b lades
Dirty i=> page 54, Cleaning windshield wiper blades
Headligh ts / Dirty Soft
sponge with a m ild soap solutional
tail light s
S ensor s/
Dirty Sensors: soft cloth with a solvent-free cleaning product
camera l enses Camera lenses: soft cloth with an alcohol-free cleaning
solution
Snow/ice Hand brush/solvent-free de-icing spray
Wheels Road sa lt Water
Brake dust Acid-free special cleaning solution
Exhau st t ail Road sa lt Water, cleaning solut ion suitable for sta inless steel, if
pi pes necessary
•
•
212 Fuel su ppl y and filli ng your fu el t ank
Refuelling
Fig. 176 R ig ht rear veh icle s ide: Open ing t he fuel fille r
fl ap
F ig. 177 F uel fi ller flap w ith atta ched fuel c ap
When activating the central lock ing, the fuel
fi ller flap is automatically un locked or loc ked.
Refuel the vehicle with the ig nition turned
off .
Tak ing th e fuel cap off
~ Turnoff the ignition .
~ Press the left side of the fuel filler flap to
open it
c::> fig. 176 -arrow- .
~ Unscrew fuel cap counter-clockwise and
hang it on the fuel filler flap
~ fig . 177.
Refu elling proc edure
~ Insert the fuel no zzle from the gasoline
pump into the fuel filler nec k as far as it will
go .
~ Select a medium refuelling rate so that the
nozzle switches off a utomatica lly when the
tank is full.
Putting the fuel cap back on
~ After filling your tank , tw ist the fuel cap
clockwise as far as it w ill go .
~ Close the fuel fille r flap. T
o avoid fuel spill ing or evaporating from th e
fuel tank always close fuel cap properly and
completely .
A WARNING
-Im proper refueling or handling of fuel can
cause fire, explosion and severe burns.
- Fuel is highly flammable and can cause
severe burns and other injur ies.
- Failure to shut the engine off while refu
eling and/or to insert the pump no zzle
fully into the fuel filler neck could cause fuel to spray out of filler neck or to over
flow . Fuel spray and overflowing fuel can
cause a fire .
- Never use a cellular telephone while re
fueling . The electromagnet ic rad iat io n
can cause sparks that can ignite fuel va
pors a nd cause a fire .
- Never get back into your vehicle whi le re
fue ling.
If in exceptional circumstances
you must get back in your vehi cle while
ref ueling, make ce rtain that you close
the door and touch metal to discharge
static electricity before touching the fill
er nozzle again . Static e lectricity can
cause sparks that can ignite fuel vapors re leased during refueling .
- Never smoke or have an open flame any
where in or near your veh icle when refu
eling or filling a portable fuel conta iner .
- For your safety, we strongly recommend
that you do not travel with a portable
fue l conta iner in your vehicle . The con
tainer, full or empty may leak and could
cause a fire, especially in a crash .
- If, u nder exceptional c ircumstances, you
must transport a portable fuel conta iner,
p lease observe the following:
- Never f ill a portable f uel container
whi le it is anywhere in or on the vehicle
(for example, in the luggage compart
ment, or on the trunk). Static electrici
ty can build up while filling and can ig
nite fuel vapors causing a fire .
- Always place a portable fue l conta iner
on the ground before fi lling.
214 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.
... Pull the release lever on the left under the
instrument panel in the direction of the ar
row
c;, fig . 180.
... Raise the hood slightly r::;, .&,
... 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
r::;, .&, .
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
r::;, ,&..
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 .
-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 215
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. •
•
Checking the engine oil level
Fig . 183 MMI Disp lay: Oil l eve l ind icator
Re ad oil le vel
.,. Park your vehicle so that it is horizonta lly
level.
.,. Shut the engine off when it is at operating
temperature .
.,. Switch only the ignition back on .
.,. Wait approx . two minutes .
.,. Select: Function button
ICARI > Oil l evel. Or
.,. Se lect: Funct ion button
ICARI > C ar sys-
tem s*
cont rol button > S ervicing & ch e ck s >
Oil level.
.,. Read the oil leve l in the MMI* Display
¢
fig . 183 . Add engine oi l if the bar o f the
oi l level ind icator is near "min"
c::> page 219
Depending 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 m iles (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
c::> page 219 . 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 219
~ Adding engine oil
Fig. 184 Eng in e compart men t: Cove r on the oil filler
n eck
.,. Before yo u check anything in the engine
compa rtment,
alwa ys rea d and h eed all
WARNING S ¢.&. in Working in the engine
compartment on page 214 .
.,. Shut the engine off.
.,. Unscrew the cap~ to the engine oi l filling
hole
r:!> fig. 184, r:!>page 216, fig. 182 .
.,. Carefully top off with 0.5 quarts (0.5 liters)
of the appropriate oil¢
page 216.
"' Check the oil level again after two minutes
¢ page 219 , Checking the engine oil level .
"'Top off the o il aga in, if necessary .
"' Screw the cap back on the filling hole .
_&. WARNING
- While topping off, the oil must not come
in contact with hot e ngine parts -fir e
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 runn ing -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
M MI*. If the message
Plea se redu ce oil
le vel
appears, contact yo ur authorized
Audi dealer or qua lified workshop to
have excess oil extracted if necessary .
-Audi does not recommend the u se of o il
additiv es. They m ay damage the engine .,.
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
qu ires 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-based coolant addi-
tive G13 antifreeze with anticorros ion 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 also raises the boil
ing point of the coolant.
Do not reduce the concentration of the coo l
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 antifree ze protection and cooling efficien
cy. If the coolant frost protection is too low,
the coolant could freeze and damage the vehi
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 mixture of wa
ter and coolant addit ive. Mixing the coolant
additive with distilled water is recommended.
& WARNING
Before you check anything in the engine
compartment, always read and heed all
WARNINGS
c::;, .&. in Working in the engine
compartment on page 214.
(D Note
- Before winter sets in, have the coolant
checked to see if the coolant additive in
Checkin g and fillin g 221
your vehicle is sufficient to meet the cli
mate conditions. This is especia lly impor
tant if you live in a region where the win
ter is extremely co ld. If necessary, in
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 Veh icle
Limited Warranty.
Checking the engine coolant level
The engine coolant level can be checked with
a quick glance.
Fig. 185 En gin e compar tment: Cover on the coo la n t
expansio n tan k
"' Before you check anything in the engine
compa rtme nt,
always read and heed all
WARNINGS c::;, .&, in Working in the engine
compartment on page 214.
"'Park your vehicle on a level su rface .
.,. Turn off the ignition .
.,. Read the engine coolant level from the cool
ant expansion tank
i=> fig . 185, c::;, page 216,
fig . 182. With a cold engine, the coolant Iii>