2015 AUDI RS7 SPORTBACK check engine

32 Opening and clo sing
Remov ing the mechanical key
Fig. 21 Remote control master key : removing the me­
chanical key
"'Press the release button@r=>.> fig. 21.
.. Pull the mecha nica l key @ out of the master
key.
Using the mechan ica l key, you can:
- lock and unlock the storage compartment
on the passenger's side
c::> page 61.
- lock and unlock the vehicle manually
<=>page 36.
-lock the front and rear passenger doors me­
chanically
c::> page 37.
Master key battery replacement
Fig . 22 Remote master key: Removing the battery
holder
Ch eck light in the master ke y
The check light @in the master key provides
information about d ifferent cond itions .
.. The check light comes on briefly once when
a button is pressed, and during an "inquiry"
by the convenience key system .
.. If the check light does not come on, the bat­
tery is dead and has to be rep laced. In addi­
t ion, when the battery is dead the
II sym­
bol appears in the instrument cluster dis- play as well as the message:
Plea
se ch ange
key b attery.
Ma ster key battery replacement
.. Pull the mechanical key out of the master
key
c::> page 32 .
.. Press the release button @ on the battery
holder and at the same time pull the battery
holder out of the master key in the direction
of the arrow .
.. Install the new battery CR 2032 with the
"+" sign facing down.
.. Push the battery holder carefully into the
maste r key .
.. Insta ll the mechan ica l key.
@ For the sake of the environment
D ispose of dead batteries properly so as
not to poll ute the environment.
(D Tips
The replacement battery must be the
same specification as the original.
Electronic immobilizer
The immobilizer helps to prevent unauthor­
ized use of your vehicle.
A computer chip ins ide your key automatically
deactivates the electron ic immobilizer when
the key is inside the vehicle . When you remove
the key from the vehicle, the electron ic immo­
bilizer is automatically ac tivated once aga in.
_& WARNING
-
A lways take the key with you when you
l eave the vehicle. The key can disarm the
e lectronic engine immobilize r and permi t
an unauthorized person to start the engine
and enable operation of the vehicle sys­
tems such as power window or power sun­
roof leadi ng to serious personal injury.
(D Tips
- The vehicle cannot be started if an una u­
thorized key is used . The vehicle may not
start if another radio device s uch as a key .,..

7 4 On the road
column will continue moving as long as you
are pressing the switch.
There must be at least 10 inc hes (25 cm) be­
tween you r chest and the center of the steer ­
ing whee l.
If you cannot sit more than 10 in­
ches (25 cm) from the steering whee l, see if
adaptive equipment is available to help you reach the pedals and increase the distance
from the steer ing wheel.
F or detai led information on how to adjust the
driver's seat, see
<::> page 54 .
In vehicles with the memory f unction* , the
steering column settings are stored together
with the seat position.
A WARNING
Improper use of steering wheel adjust­
ment and improper seating position can
cause se rious personal injury.
- Adjust the steer ing whee l column on ly
when the vehicle is not moving to pre­
vent loss of veh icle control.
-
- Adjust the driver's seat or steering wheel
so that the re is a min imum of 10 inches
(25 cm) between your chest and the
steering wheel ¢
page 1211 fig. 146. If
you can not maintain this min imum dis­
tan ce, the airbag system cannot protect
yo u properly.
- If phys ica l limi tations prevent you from
sitting 10 in ches (25 cm) o r more from
the steering wheel, check with yo ur au­
tho rized Aud i dealer to see if adaptive
equipment is availab le .
- If the steering wheel is aligned with you r
face, the supp lemental drive r's airbag
cannot provide as much protect ion in an
acc ident. A lways make sure that the
steering wheel is aligned with your
chest.
- Always hold the steering wheel with your
hands at the 9 o'clock and 3 o'clock posi­
t ions to reduce the risk of pe rsonal injury
if the d river 's airbag deploys.
- Never hold the steering whee l at the 12
o'clock posit ion or w ith your hands i nside the steering wheel rim or on the steering
wheel hub. Hold
ing the steer ing wheel
the wrong way can cause serious injuries
to the hands, arms and head if the driv­
er 's airbag deploys.
Easy entry feature
Applies to vehicles: with electrically adjustable steering
wheel
The easy entry feature makes it easier to en­
ter and exit the vehicle by automatically ad­
justing the steering wheel.
.. Select in the MM I: ICARI function button>
(Car )* sys tem s control b utton > V ehicle set­
ting s
> Seats > D rive r's seat > Easy entry >
On .
When the easy ent ry feature is turned on, the
steering wheel moves up to the park position
when you switch
off the ignition. After you en­
ter the veh icle, the steering wheel moves to
the stored position as soon as you sw itch on
the ignit ion.
Starting and stopping
the engine
Starting the engine
This button switches on the ignition and
starts the engine.
Fig . 83 Center console: S TART ENGINE S TOP butto n
Switching the ign ition on /off
.. To switch the ign ition on/off, press the
I STAR T ENGINE ST OPI button . Do not press
the brake pedal while doing this . .,.

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Braking
General information
What affects braking efficiency?
Operating condi tions and d riv ing hab it s
The brakes on today's automobi les are sti ll
subject to wear, depending largely on operat­
ing conditions and driving habits
c:> A . On
vehicles that are either driven mostly in stop­
and-go city traffic or are driven hard, the brake pads should be checked by your author­
i zed Audi dealer more often than specified in
the
Warr ant y & Maint enan ce bookle t. Failure
to have your b rake pads inspected can res ult
i n red uced brake performance.
On steep slopes, you should use the brak ing
effect of the engine. This way, you prevent un­
necessa ry wea r on the brake system.
If you
must use yo ur brakes, do not ho ld the brakes
down continuously. Pump the brakes at inter ­
va ls.
Moistu re or road salt
Unde r ce rtain conditions, for example, when
driving through wate r or very heavy rain, or
even after washing your vehicle, the braking
effect can be reduced d ue to moisture (or in
freezing conditions ice) on the brake pads . A
few careful brake app lications should dry
off
the brake pads or remove any ice coatings.
When you are driving at higher speeds with
the windshield wipers on, the brake pads will
briefly touch the brake discs in regular inter­
vals so as to improve reaction t ime when brak­
ing on wet surfaces . You the driver w ill not no­
tice anything .
The effectiveness of the brakes can be reduced
when the vehicle is driven on a salt-covered
road and the brakes are not used . Here too,
you should clean
off accumulated salt coat ing
from b rake discs and pads with a few careful
applications of the brake
c:> ,&. .
t5 Cor ro sion
'SI: ,...., \!) 1.1'1 ,...., 1.1'1 ,....,
There may be a tendency for dirt to build up
on the brake pads and corrosion to form on
Int ellig ent technolog y 191
the d iscs if the car is not driven regu larly or
only for short trips with litt le use of the
brakes.
If the brakes a re not used frequently, o r if cor­
rosion has formed on the discs, it is adv isable
to clean
off the pads and discs by braking
firmly a few times from a moderately high
speed
c:> ,&. .
Fault s in the brak e syste m
If you shou ld notice a sudden increase in
brake pedal trave l, then one of the two brake
circuits may have fai led ¢
A.
Low brake fluid lev el
Malfunctions can occu r in the bra ke system if
the brake fluid level is too low. The brake flu id
level is monitored elect ronica lly.
Brake booster
The brake booster works with vacuum pres­
su re which is created only whe n the engine is
runn ing ¢,&. .
Brake lining we ar s tatus
Brake lining wear may be checked by visual in­
spection of the condition of the brake pads
through the open ings in the wheel. If neces­
sary, the wheel may be removed fo r thi s in­
spection ¢
page 263, Changing a wheel.
_& WARNING
-You should perform braking maneuvers
for the purpose of cleaning the brake system only if road conditions permit .
Other road users must not be put at risk -
you may ca use an accident!
- Before descending a steep grade, reduce
speed and sh ift transmission into a lower
gear or lower dr iving range. Do not ride
the brakes or hold the pedal down too long or too often . Th is could cause the
brakes to get hot and diminish braking
efficiency.
- Do not "ride the brakes" by rest ing your
foot on the pedal when you do not intend
to b rake. This may cause the brakes to
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Avoid damaging the
vehicle
When you are driving on poor roads, or over
curbs, steep ramps, etc., make certain that
low-lying parts such as spoilers and exhaust
system parts do not bottom out and get dam­
aged.
T his is especially true for vehicles with low­
slung chassis (sports chassis) * and fully load­
ed veh icles .
Driving through water
on roads
Note the following to avoid vehicle damage
when driving through water, for example on
flooded roads:
- T he water must not be any h igher than the
bottom of the veh icle body.
- Do not d rive faster than wa lking speed.
..&, WARNING
After driving through wate r, m ud, slush,
etc., the brakes may be slow to take effect
because o f 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 eng ine,
transmission, suspension or e lectrical
system can be severely damaged by driv­ ing through water.
- Check the depth o f the water before driv ­
ing through it.
- Do not s top the veh icle, drive in reverse
or switc h the engine off when driving
through water.
- Keep in mind that oncoming vehicles may create waves that raise the water
level and make it too deep for your vehi­
cle to drive through safely.
- Avoid driving thro ugh sa lt water because
-
~ it can ca use corrosion. ,....,
Dri vin g and en vironm ent 197
Warming up and
cooling down
By carefully warming up and cooling down
your vehicle, you can help ensure that it is not
overstressed unnecessar ily during sporty dr iv­
ing.
When warming up, the vehicle is dr iven at a
maximum engine speed of 6000 RPM in order
to raise the engine o il temperature to a mini­
mum of 140
°F (60 °() . The t ires a lso on ly
reach the ir full road holdi ng capabi lity on ce
they have warmed up.
The cooli ng fan can cont inue to run in your ve­
hicle after the engine is switched off . Howev­
er, driving the veh icle to coo l it down is pa rti c­
ul arly important. Dur ing spo rty driving , the
engine and b rakes, the exhaust system, and
the transmission a ll become extremely hot.
Before you park the vehicle, you should drive
it for a few miles/kilometers at light load in
the low rpm range to allow it to cool down .
Catalytic converter
App lies to vehicles: wi th gaso line e ngi ne
It is very important that your emission con­
trol system (catalytic converter) is function ­
ing properly to ensure that your vehicle is run­
ning in an environmentally sound manner.
"' Always use lead-free gasoline c:> page 206,
Fuel supply .
"' Never run the tank down all the way to emp­
ty.
"' Never put too much mo to r o il in yo ur eng ine
c:> page 21 S, Adding engine oil "t:::r..
"' Never try to push -or tow -start you r vehicle .
T he catalytic co nve rter is an efficient "clean ­
u p" dev ice bui lt into t he exhaus t system of
the ve hicle . The cata lytic converter bu rns
many of the pollutants in the exha ust gas be ­
fore they are re leased into the atmosphere.
T he exclus ive use of unleaded fuel is c ritical ly
i mportant for the life of the catalyt ic convert -
er and proper functioning of the engine .
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@ Tips
The consumption estimates as published by ENVIRONMENTAL PROTECTION AGENCY (EPA) and Transport Canada may not corre­
spond to your actual consumption on the
road, which will vary depending upon vehi­
cle load and speed, road and weather con­
ditions, trip length, etc.
Drive smoothly and keep a lookout
ahead
Vehicles use the most fuel when they are ac­
celerating.
~ Avoid unnecessary accelerating and braking.
Vehicles use the most fuel when they are ac­
celerating. If you anticipate what is going to happen next, you will need to brake less and,
thus , accelerate less . Let the vehicle coast
whenever possible -for example when you see
that the next traffic light is red.
Avoid full throttle
Driving at moderate speeds saves fuel and
improves your mileage.
~ Try and keep well below your car's maximum
speed.
Accelerating gently reduces fuel consump­
tion, engine wear, and does not disturb the
environment .
Fuel consumption, exhaust emissions and en­
gine noise increase disproportionately at high
speeds . If you drive at approximately three
quarters of top speed, fuel consumption will
be reduced by one half. Never drive faster
than the posted speed limit and weather con­
ditions permit.
Reducing unnecessary idling
Even when your car is just idling it burns up
fuel .
~ Shut the engine off when you are not driving
the vehicle.
Driving and environment 199
~ Do not warm up the vehicle by letting the
engine run at idle.
It makes sense to shut off the engine in traffic
jams , when waiting for trains to pass at rail­
road crossings, or at traffic lights that have
long waits on red. Turning the engine off for
just 30 -40 seconds saves more fuel than is
burned starting the engine again.
It takes a long time for the engine to warm up
fully when it is running at idle. However, wear
and noxious emissions are especially high
when the engine is warming up. So you should
drive away as soon as you start the engine and
avoid running at high rpms while the engine is
still warming up .
(D Note
Do not leave engine idling unattended af­
ter starting . If warning lights should come
on to indicate improper operation, they
would go unheeded. Extended idling also
produces heat, which could result in over­
heating or other damage to the vehicle or
other property.
Regular maintenance
A badly tuned engine unnecessarily wastes a
lot of fuel.
~ Have your vehicle serviced at regular inter-
vals.
By having your vehicle regularly serviced by an
Audi dealer helps to ensure that it runs prop­
erly and economically. The condition of your
vehicle not only affects its safety and ability to
hold its value, it also affects
fuel consump­
tion.
Check your oil each time you fill your tank.
The amount of oil used is related to engine
load and speed .
It is normal for the oil consumption of a new
engine to reach its lowest value after a certain
mileage has been driven .
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Checking and filling Engine hood
Releasing the engine hood
The engine hood is released from inside the
vehicle .
Fig. 186 Dr ive r foo twell: re lease leve r
Fig. 187 Rocker sw itch under the hood
Make sure the wiper arms are not raised up
from the w indshield. Otherw ise the paint
could be damaged.
.. With the driver's door open , pull the lever
under the instrument panel in the direction
of the arrow
c::> fig. 186.
.. Raise the hood slightly c::> .&. .
.. Press the rocker switch under the hood up­
ward
c::> fig. 187 . This releases the catch.
.. Open the hood .
A WARNING
Hot engine coo lant can burn you.
- 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.
Checkin g and fillin g 211
Working in the engine compartment
Be especially careful whenever you work in
the engine compartment.
When ev er y ou must p erform an y wor k in the
en gine com pa rtm ent , for e xample checking
a nd filling diff ere nt fluid s, th ere is a risk of
inju ry, burn s and accid ent s. To pr eve nt per­
so nal injury alwa ys observ e the foll owing
W ARNING S. The engin e compartm ent of any
v e hicle i s a h aza rdou s area
c::> ,& .
h WARNING
To help avoid injury, before yo u check any ­
thing under the hood:
- Turn off the engine.
- Sw itch off the ignition .
- Apply the parking brake.
- Move selector leve r to P (Park) .
- Always let the eng ine cool down . Hot
components w ill burn skin on contact .
- To reduce the risk of being burned, never
open the hood if you see or hear steam
or coo lant escaping from the engine
compa rtment. Wait unt il no steam or
coolant can be seen or heard before care­
fu lly opening the hood.
- Keep ch ildren away from the engine com­
pa rtment.
- Never sp ill fluids on hot engine compo­
nents . They can cause a fire .
- Never touch the rad iator fan. The auxili­
ary electric fan is temperat ure controlled
and can switch on suddenly .
- Never open the coolant reservoir cap
when the engine is still warm . The cool­
ant system is p ressu rized and hot cool­
a nt cou ld spray o ut.
- Protect your face, hands and arm from
steam or hot engine coolant by plac ing a
thick rag ove r the cap when you open the
coo lant rese rvoir.
- Do not remove the engine cover under
any circumstances. This inc reases the
ris k of burns.
- If work on the fue l system o r the elec tri -
cal system is necessary:
II>-

212 Check ing and filling
- 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 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:
- Fi rst, fully apply the parking bra ke,
move se lec to r lever to P (Pa rk) .
- Always use extreme caution to preven t
clot hing, jewe lry, or long h air from ge t­
ting caught in the radiator fan, V -belts
or other moving parts, or from contact­ ing hot parts. Tie back hair before
start ing, and do not wear cloth ing that
will hang or droop into the eng ine.
- Min imize exposure to emission and
chemica l hazards¢ ,&..
A WARNING
California Propos ition 65 Warning:
- Engine exhaust, some of its constituents,
and certa in veh icle components conta in
or emit chemicals known to the State of
Califor nia to cause cancer and b irth de­
fec ts a nd reproduct ive ha rm. In addition,
certain fluids conta ined in vehicles and
certa in prod ucts of co mponent wear co n­
ta in o r emi t chemicals known to the
State o f Ca lifornia to cause can cer and
birth defects or ot her reproductive harm. -
Battery posts, terminals and re lated ac­
cessories conta in lead and lead com­
pounds, chemicals known to the State of
California to cause cance r and reproduc­
tive harms. Wash hands after handling .
(D Note
When adding flu 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 regularly. If
you see spots from oil or other ve hicle flu­
i ds, have yo ur vehicle inspected by a n au­
thori zed Audi dea le r.
Closing the engine hood
.,. Pull the hood down un til the pressure from
t he struts is reduced.
.,. Let the hood drop down and latch in p lace .
Do not try to push it shut; it may fail to en­
gage ¢&_ .
A WARNING
-
A hood that is not completely latched
could fly up and b lock your view while dr iv­
ing.
- When you close the engine hood, check it
to make sure the safety catch has p roper­
ly engaged. The hood sho uld be flush
with the surrou nding vehicle body pa rts.
- If you notice while driv ing t hat the hood
is not s ecured prope rly, stop at onc e and
close it.

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Checking and filling 213
Engine compartment
Engine compartment overview
These are the most important items that you can check.
Fig. 1 88 Typical l ayout for conta iners a nd engine o il filler cap
@ Jump s tart p oin t(-) with hex
head screw .. .. ..... ... .. .. . 223, 273
@ Jump start point(+) under a cov-
er .. .. ... ..... ...... ...... 223, 273
@ Bra ke fl uid reservo ir ((0)) . . . . . 220
© Eng ine oi l filler cap ("1:::r.) . . . . . 215
® Coolant expansion tank (-L) . . . 217
@ W indshie ld/headlight washer
container
(0) . . . . . . . . . . . . . . 224
_& WARNING
Before yo u check anything in the engine
compartment, always read and heed all
WARNINGS
Q .&. in Working in the engine
compartment on page 211.
-
Engine oil
Engine oil specifications
The engine oil used must conform to exact
specifications.
T he service interva l d isp lay in t he instr ument
cluster of yo ur vehicle will inform you when it
is time for an oil change. We recommend that
you have your oil changed by an authorized
Audi Se rv ice Advisor .
If you have to top off the oi l between oi l
c hanges, use the Audi o il quality standard
spec ified in the table.
Audi oil quality standard
Gasoline
VW 502 00 or
engine vw 504 00