2015 AUDI A4 service

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Resetting the service interval display
Your authorized Audi dealer w ill rese t the cor­
responding service schedule after performing
the appropriate service on your vehicle. Yo u
also have the possibility to reset the oil
change schedule after having performed an
oil change according to Audi specifications.
Select
I CAR I function button > Service interval
display > Reset oil change interval
or !CARI
function button > Car systems* control but­
ton
> Servicing & checks > Reset oil change
interval.
0 Note
- Only reset the oil change d isplay when
you have completed an oil change.
-If you disconnect the battery terminals,
no calculat ions can be made for the serv­
ic e interval display during this tim e and
no service rem inder will appear. Remem­
ber that observing the proper service in­
terva ls is vitally important to extending
the life of your vehicle, particularly the
engine, and maintaining its va lue. Even if
the mileage dr iven is low, the max imum
period of one year from one serv ice to
the next must not be exceeded .
(D Tips
The informat ion in the Service Reminder
remains stored even when the vehicle bat­
tery is disconnected.
On-Board Diagnostic
system (OBD)
Malfunction Indicator Lamp (MIL)
The Malfunction Indicator Lamp (MIL) ¢..ift in
the instrument cluster is part of the On-Board
Diagnostic (OBD II) system.
The warning/indicator light illuminates when
the ignition is switched on and goes out after
the engine starts and the idle has stabilized .
This indicates that the MIL is work ing proper­
l y.
Driver information display 29
If the light does not go out after the engine
is started, or illuminates while you are driv­
ing , a malfunction may exist in the engine sys ­
tem.
If the light illuminates, the catalytic con­
verter could be damaged.
Continue d rivin g
with reduced power (avoid­
ing su sta ined high speeds and/or rapid accel ­
erations) and have the cond ition corrected.
Contact your authorized Audi dealer.
If the light illuminates, the electronic speed
li miter may also be malfunct ioning. For more
information
c;,page 30, Electronic speed
limiter.
An improperly closed fuel filler cap may also
cause the MIL light to illuminate
c:;, page 210.
On-Board Diagnostics
Fig. 18 Location of Data Link Connector (D LC)
On-Board Diagnostics monitors the compo­
nents of your emission contro l system . Each
monitored component in your engine system
has been assigned a code. In case of a mal­
function, the component will be identified
and the fault stored as a code in the control
module memo ry .
The MIL light may also illuminate if there is a
leak in the on-board fuel vapor recovery sys­
tem. If the light illumi nates afte r a refueling,
stop the vehicle and make sure the fuel filler
cap is properly closed
¢ page 210.
In order to make an accurate diagnosis, the
stored data can on ly be displayed using spe­
c ial diagnostic equipment (generic scan tool
for 080). .,.

32 Opening and clo sing
- If the power locking system should ma l­
function, you can lock the driver's door us ing the mechanical key
c:> page 3 7.
- If the power locking system should fail,
you can sti ll open the fue l tank flap in an
emergency
c:> page 211.
- You are we ll advised not to keep valua­
bles inside an unattended vehicle, visib le
or not. Even a properly locked vehicle
cannot provide the security of a safe.
- If the LED in the upper edge of the driv­
er's door panel comes on for abo ut 30
seconds after the vehicle is locked, there i s a ma lfunction in the power locki ng or
the anti-theft warning system. Have the
malfunction corrected by an author ized
A udi dealersh ip or qua lified repai r fac ili­
ty.
Key set
F ig . 19 Key set
@ Remote cont rol key with mechanical
key
You can centrally lock and unlock your vehicle
and start the engine with the master key with
remo te con trol. A mec hanical key is integ rat­
ed i n the master key
c:> page 33 .
@ Emergency key
The emergency key is not intended for con­
stant use.
It should on ly be used in an emer­
gen cy, fo r example, in place of the ign ition key
cc> page 84. Keep it in a s afe p lace and do
not ca rry it on your key ring .
Key replacement
If you lose a key, contact you r authorized Audi
dealer immed iate ly to have the
Lost key disa­
bled. Be sure to bring all your keys with you .
Number of keys
You can check the number of assigned keys to
yo ur vehicle
c:> page 11. This allows you to
make su re you have re ceived all of the keys
when you purchase a used vehicle.
Data in the master key
D uring d riving, s ervice and maintenance-rele­
vant data is continuously stored on your mas­
te r k ey. Your Aud i service adviser can read out
t hi s data and tell you abo ut the work yo ur
ve­
hicle needs . This applies also to vehicles with
convenience key*.
Personal comfort settings
If two people use one veh icle, it i s r ecom­
men ded that e ach person alw ays uses "t heir
own" maste r key. When the ignition is tu rne d
off or when the vehicle is locked, personal
convenience setti ngs for the following sys ­
tems are stored and assigned to the remote
master key.
- Climate contro l
- Powe r lock ing system
- Seat memory *
- Parking system*
- Adapt ive cru ise control*
- Side assist*
- Drive se lect*
T he s to red settings are au toma tically recalled
whe n you unlock the vehicle, when yo u open
t h e doors or w hen you t urn on t he ignitio n.
A WARNING
-Do not leave your vehicle unattended
wit h the key in the ignition lock. Entry by
unaut horized persons co uld endanger
you or result in theft or damage the vehi­
cle.
- Do not leave ch ildren unattended in the
veh icle, especially with access to vehicle

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Valet parking
Applies to vehicles: with fold ing and lockable rear seat­
backs
The valet parking feature protects the lug­
gage comportment from unauthorized ac­
cess.
Fig. 39 Glove compa rtment: valet parking button
You can switch the "valet parking function" on
when someone else is parking your vehicle.
When the function is switched on, the vehicle
can be driven, locked and unlocked us ing the
maste r key, but access to the luggage com­
partment is not permitted .
• Take the mechanical key out of the master
key
c;, page 33 .
• Open the glove compartment c;, page 67.
• Activate
c;, fig. 39 the "valet parking " fea­
tu re by press ing the
! VALET ! button. The in­
dicator light in the switch i lluminates.
• Close the glove compartment and lock it
with the mechanical key.
• Lock both rear seatbacks with the mechani­
cal key
c;, page 71.
• Lock the luggage compartment pass­
through with the mechanical key
c;, poge 75.
• Leave the master key with the service per­
sonnel for parking and keep the mechanica l
key w ith you.
The fol low ing buttons are deac tivated when
the valet parking function is sw itched on:
- I a I button in the driver's door
-la l button on the master key
- Handle in the rear lid
When the va let parking feature is activated ,
the message
Vale t p arking act ivat ed appears
Op enin g an d clos ing 45
in the instrument cluster display when you
switch the ignition on.
Garage door opener
(Homelink)
Description
App lies to vehicles: wit h garage door opener (Homelink)
Fig. 40 Garage door opener: examples of using with
d ifferent systems
You can activate various systems s uch as ga­
rage doors, security systems and home light­
ing from inside your vehicle using the garage
door opener (Homelink). There are three but­
tons for this in the vehicle headliner that can
be in used in place of up to three hand-held
transmitters .
To operate systems using the garage door
opener, the three buttons in the roof headlin­
er must be programmed first.
A WARNING
Make sure no people or objects are in the
i mmediate vicin ity of the equ ipment when
using or p rogramming the garage door
opener. People can be injured and objects
can be damaged if they are ca ught in the
eq uipment .
(D Tips
-For security reasons, we recommend that
you clear the programmed b uttons be­
fore sell ing the vehicle .
- For add itiona l information about Home­
L ink, visit www.homelink.com.
- For Declaration of Comp lian ce to United
States FCC and Ind ustry Canada reg ula­
tions
c;, page 286.

50 Clear vis ion
@ Tips
- The light sensor* for headlight control is
located in the rear view m irror mount.
You should therefore not apply any st ick­
ers to the windsh ield in this area in order
to prevent malfunctions or failures.
- Some exterior lighting functions can be
adjusted
c> page 50.
- When you remove your key from the igni­
tion while the vehicle's lights are turned
on, a buzzer sounds as long as the driv­
er's door is open .
- In cool or damp weather, the ins ide of
the headlights, turn signals and tail lights can fog over due to the tempera­
ture difference between the inside and
outside. They will clea r shor tly after
switching them on. This does not affect
the service life of the lighting.
- In the even t of a light sensor malfunc­
tion, the driver is no tified in the instru­
ment cluster disp lay¢
page 22.
Turn signals and high beam lever
The lever operates the turn signals, the high
beams and the headlight flasher .
Fig. 44 Tu rn s ig na l and hig h beam lever
Turn sign als ¢i ¢
The turn signals activate when you move the
l ever into a turn s ignal pos ition when the ign i­
tion is switched on.
(D -right turn signal
@-left tur n signa l
The turn s ignal blinks three times if you just
tap the lever .
High be ams and headlight flasher [D
Move the lever to the correspon ding posit io n:
@ -high beams on
@ -high beams off or headlight flasher
The indicator light
ii in the instrument cl us­
te r turns on .
Notes on thes e features
-The turn signals on ly wor k w ith the ignition
t ur ned on. The indicator ligh ts
Ct or a in
the instrument cluster also blink.
- After you have turned a co rner, the turn s ig ­
na l switches off au toma tically .
- The
high beam works on ly w hen the head­
lights a re on. The ind icator ligh t
II in the
instrument cluster illuminates when the
high beams are on .
- The
headlight flasher works o nly as long as
you ho ld the lever -even if there a re no
lights switched on . The indicator light
II in
the instrument cluster illuminates when you
use the headlight flasher.
A WARNING
--
Do not use the h igh beam or headlight
flasher if you know that these could blind
oncom ing traffic.
Adjusting exterior lighting
The functions ore selected in the radio or
MMI" .
.,. Select: !CARI function button> Exte rior
light ing .
Or
.,. Select: !CARI function button > Car systems *
control button > Vehicle s etting s> Exterior
lighting .
Coming home (light when leav ing car }*,
Leav ing home (light when unlocking car )*
The coming home function illuminates the
area around the vehicle when the ignition is
switched off and th e dr ive r's door is open ed.
Depend ing on veh icle equ ipment, the function
can be switched on and off or the length of
time the lig hts remain on* can be ad justed . ..,.

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Rear wip er*
• Lift the w iper arm away from the rear w in­
dow .
A WARNING
Dirty windshield wiper blades can impair
your view. This can lead to accidents.
Replacing windshield wiper blades
Fi g. 57 R emov ing wi nd shi eld w iper blade
-
Wiper ser vice position /blade replacem ent
position
• Switch the ign ition off and move the w ind­
shield wiper lever to position ©¢
page 55,
fig. 55 . The windshield wipers move into the
service position.
• To bring the wipers back into the original
position, swi tch the ignition on and press
the windshield wiper lever.
You can also turn the service pos ition on or off
in the radio/MM!*:
• Switch the w indshield wipers off (posit ion
@ ¢
page 55, fig. 55).
• Se lect : ICARI funct ion button> Wind shie ld
wiper s
> Servi ce positi on > on /off . Or
• Se lect :
IC ARI funct ion button> Car syste m s*
control b utton
> S ervicing & ch eck s > Wiper
s er vic e pos ition
> On/ Off .
Removing the wiper blade
• Lift the w indshield wiper arm up from the
windshield.
• Press the locking knob
(D ¢ fig. 57 on the
wiper blade . Hold the wiper blade fi rm ly.
• Remove the wiper blade in the direct ion of
the arrow .
Clear vis ion 5 7
Attach ing the wiper blade
• Insta ll the new wiper blade in the reta iner
on the wiper arm@ unti l yo u h ear it click in­
to place on the wiper arm .
• Place the wiper arm back on the windshield.
• Turn the service position off.
A WARNING
For your safety, you should rep lace the
wiper b lades once or twice a year . See your
authorized Audi dealer for replacement b lades.
(D Note
- The windshield w iper blades must only
be replaced when in the service pos ition!
Otherw ise, you risk damag ing the pa int
on the hood o r the windshie ld w iper mo­
to r.
- Yo u should not move your vehicle o r
press the windsh ield wiper lever when
t he wipe r arms are folded away from the
w indshield . The windsh ield wipers wou ld
move back into their original position
and co uld damage the hood and wind­
shield.
- To help prevent damage to the w iper sys­
tem, always loosen blades which are fro­
zen to the windshield before operating
w ipers.
- To help p revent damage to wiper blades,
do not use gasoline, kerosene, paint
thinner, or other solvents on or near the
w iper blades .
- To help prevent damage to the w iper
arms or other components, do not at­
tempt to move the wipe rs by hand .
(D Tips
- Commercial hot waxes applied by auto­
matic car washes affect the how easily
the glass surface can be cleaned .
- You can also use the service position, for
example, if you want to protect the
w indshield from icing by using a cover .

78 Warm and cold
Warm and cold Climate controls
Description
The climate control system warms, cools and
adds humidity to the air in the vehicle interior.
It is the most effect ive when the windows and
sunroof are closed . If there is a build-up of
heat inside the vehicle, ventilation can help to
speed up the cooling process.
I n all heating mode functions except
defrost,
the blower on ly switches to a higher speed
once the engine coolant has reached a certain
temperature.
Condensat ion from the cooling system can
drip and form a puddle of water under the ve­
hicle. This is normal and does not mean there
is a leak.
Pollutant filter
The pollutant filter removes pollutants s uch
as dust and pollen from the air.
The air pollutants filter must be changed at
the intervals spec ified in you r Warranty
&
Maintenance booklet, so that the air condi­
tioner can properly work.
If you drive your vehicle in an area with h igh
a ir po llution, the fi lter may need to be
changed more frequent ly than specified in
your Aud i Wa rranty
& Ma intenance booklet. If
in doubt, ask your authorized Audi Service Ad ­
visor for advice .
Key coded settings
The climate control settings are automat ically
stored and assigned to the remote control key
that is in use.
A WARNING
Reduced visibility is dangerous and can
cause accidents.
-
- For safe driving it is very important that
all windows be free of ice, snow and con­
densation.
- Comp letely familiarize yourself with the
proper use and function of the heating
and ventilation system and especially how to defog and defrost the windows.
- Never use the windshield wiper/washer
system in freez ing weather unt il you
have warmed the windshield first, using
the heating and ventilation system. The
washer solution may freeze on the wind­ shie ld and reduce visib ility.
(D Note
- If you suspect that the air conditioner
has been damaged, switch the system
off to avoid further damage and have it
inspected by a qualified dealership.
- Repairs to the Audi air conditioner re­
quire special technical know ledge and
special tools. Contact an authorized Aud i
dea ler fo r assistance.
@ For the sake of the environment
By reducing the amount of fuel you use,
you also reduce the amount of pollutants
emitted into the air.
(D Tips
-Keep the air intake s lots (in fro nt of the
w indshield) free from ice, snow and de ­
bris in order to maintain the proper func­
tion of the climate control system.
- T he energy management system may
switch the seat heating* or rear window
defroster off temporarily . These systems
are available again as soon as the energy
balance has been restored.
- Air escapes through vents under the rear
window. When placing items of clothing
on the luggage compartment cover, en­
sure that the openings are not covered.

102 Audi adaptive cruise control and braking guard
confirmed by the video camera, an acute
collision warning.
- For safety reasons, do not use adaptive
cruise control when driving on roads with
many curves, when the road surface is in
poor condition and/or in bad weather
(such as ice, fog, gravel, heavy rain and
hydroplan ing). Using the system under
these conditions could result in a colli­
sion.
- Switch adaptive cruise control off tempo­
rar ily when driv ing in turning lanes, on
expressway exits or in construc tion
zones. This prevents the vehicle from ac­
celerating to the set speed when in these
situations.
- Th e adaptive cruise control system w ill
not brake by itse lf if you put your foot on
the accelerator pedal. Doing so can over­
ride the speed and distance regulation.
- When approaching stationary objects
such as stopped traffic, adaptive cruise
control will not respond and braking
guard w ill have limited function.
- The adaptive cr uise control system and
braking guard do not react to people, an­
ima ls, objects crossing the road or on­
coming objects .
- The function of the radar sensor can be
affected by reflective objects such as
guard rails, the entrance to a tunnel,
heavy rain or ice.
- Never follow a vehicle so closely that you cannot stop your vehicle safely. The
adaptive cruise control cannot slow or
brake the vehicle safely when you follow
ano ther vehicle too closely . Always re­
member that the automatic braking
function cannot bring the vehicle to a sudden or emergency stop under these
conditions.
- To prevent unintended operation, always
switch ACC
off when it is not being used.
{[) Note
The sensor can be d isp laced by impacts or
damage to the bumper, whee l housing and
underbody . That could affect the adaptive cruise control system and b
raking guard.
Have your authorized Audi dea ler or au­
thorized Audi Service Facility check their
function.
, In curves
Applies to vehicles: wit h Aud i adapt ive cr uise contro l
Fig . 114 Examp le: driv ing into a curve
When driving into a curve ~ fig. 114 and out
of a curve, the adaptive cruise control may re­ act to a vehicle in the next lane and app ly the
brakes. You can override or prevent the brak­
ing by pressing the accelerator pedal briefly.
Stationary objects
Applies to vehicles: with Aud i adaptive crui se contro l
Fig. 115 Examp le: object chang ing lanes a nd station ­
a ry object
The adaptive cru ise control system only reacts
to objects that are moving or that the system
has a lready detected as moving. For examp le,
if a vehi cle@ , which has already been detect­
ed by the adaptive cruise control, turns or
changes lanes and another stationary vehicle
@ is located in front of that vehicle, the sys­
tem will not react to the stationary vehicle.

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Audi adaptive cruise control and braking guard 109
-If you restrict or switch off the ESC, the
braking guard also switches itself off
¢page 187.
- Switch braking guard off when you are
loading the vehicle onto a vehicle carrier,
tra in, ship or other type of transporta­
tion. This can prevent undesired warn­ i ngs from the braking guard system.
Messages
App lies to vehicles: with Audi adaptive cruise co ntrol
Braking guard: Off
This driver message appears if the system is
turned off via the radio/MM!*. Otherwise, if
the system is turned off, the information ap­ pears every time shortly after the start of the
tr ip.
The driver message also appears if the system is not avai lab le due to a malfunction or if the
ESC is not switched on¢
page 187. If this is
the case, the system will not provide warnings
about a possible collision.
Braking guard: Activated
This driver message appears if sharp brake
press ure was applied due to an acute warning.
•••
Three wh ite dots appear if a setting cannot be
selected with the operat ing lever . For exam­
p le , this happens if you want to raise/lower
the speed even though there was no previous­
l y saved speed .
ACC: Deactivation
The driver message appears in vehicles with
manual transmission . If the clutch pedal was
pressed down for too long, the adaptive cruise
control turns off . A chime sounds as a rem ind­
er .
ACC: Sensor blocked
This message appears if the sensor view is ob ­
structed, for example by leaves, snow, heavy
spray or dirt. Clean the sensor¢
page 101,
fig. 113.
ACC: not available
The driver message appears if there is a mal­
function . The adaptive cruise contro l turns off .
A chime sounds as a reminder. Have the sys ­
tem checked by an authori zed Aud i dea ler or
authorized Aud i Service Fac ility.
ACC: unavailable
The driver message appears if, for example,
the brake temperat ure is too high. The adap­
tive cruise control is temporarily unavailable .
A chime sounds as a reminder.
Engine speed!
This driver message appears in vehicles with
manua l transmission if the driver had not up­
shifted or downs hifted in time while using
adaptive cruise control braking or accelerat­
ing, caus ing the vehicle to exceed or no t reach
the permitted limit speed. The adaptive cruise
control turns off. A chime sounds as a remind­
er .
Shift lever position!
Vehicles with an automat ic transmission: the
driver message appears if the selecto r lever is
shifted to the N position. Th e adaptive cruise
control is no t available while in this position.
Vehicles with manua l transm ission: the driver
message appears for vehicles with manual
transmission if there is no forward gear en­
gaged, meaning if the reverse gear or the 1st
gear is engaged or if the selector leve r is in
the neutral position . The adaptive cr uise con­
trol is not available while in th is position.
Stabilization control (ESC)
This message appears if the electronic stabili­
z ation control ( ESC) is taking action to stab i­
lize the vehicle. The adaptive cruise contro l
turns off. A chime sounds as a reminder .
Speed too low
This message appears if the current speed is
too low
to set or to maintain the desired
speed .
The speed be ing saved must be at least
20 mph (30 km/h). The cruise control is
turned off for speeds lower than 12 mph