2015 AUDI A4 engine

Instruments and warning/indicator lights 15
Other indicator lights
-------------
Turn signals
¢page 22
USA models: Cru ise control
¢ page 91
Canada models: Cruise control
¢ page 91
Adaptive cruise control*
¢page 104
Adaptive cruise control*
¢page 104
High beam
¢page 50
BRAKE/( ([)) Brake system
The light illuminates when the ignition is
switched on.
It goes out after the eng ine has
been started. This ind icates that the brake
warn ing light is func tioning properly.
If the brake warning light does not light up
when the engine is cranking, there may be a
malfunction in the electrical system. In this
case, contact your authorized Audi dealer.
If the brake system warning/ind icator light
turns on, there is a brake system malfunction.
1111 (USA models) tlll (Canada models)
Stop vehicle and check brake fluid level
If the indicator light turns on and the mes­
sage appears, proceed as follows:
~ Pull off the road.
~ Stop the vehicle .
~ Turnoff the engine.
~ Check the brake fluid level¢ page 221.
~ Contact your nearest authorized repair fa-
c ili ty if necessary .
Warning! Fault in brake system . Contact
dealer
If the ABS indicator light fl1 (USA models)/
ii] (Canada models), the ESC indicator light
G1 and the brake system indicator light
1111 (USA mode ls)/ . (Canada models) turn
on and the message appears, the ABS, ESC
and braking distribution are not working~& .
Carefully drive to your authorized Audi dealer
immediately to have the malfunction correct ­
ed ~& .
1111 (USA models )/. (Canada models)
Parking brake system fault! See owner's
manual
- I f the ind icator light and the message ap­
pear
when stationary or after switching the
ignition on,
check if you can re lease the
parking brake. After releasing the parking
brake, carefully drive to your authorized
Audi dea ler immediately to have the ma l­
function corrected. If you cannot release the
parking brake, seek professional assistance.
- If the indicator light and the message ap­
pear
while driving , the emergency brak ing
function may not be available. It may not be possible to set the parking brake or release
it once it has been set . Seek profess ional as­
sistance .
(USA models): If the warning light
1111 and
the warn ing light
EiJ appear together, imme­
diately contact your authorized Audi dealer or
qualified workshop to have all brake pads in­
spected
~ page 20.
When the light comes on, an aud ible warning
s ignal is also given .
A WARNING
-Always observe the warn ings in
¢
page 212, before opening the hood
and checking the brake flu id.
- Driving with low brake fluid is a safety
hazard. Stop the car and get professiona l
assistance.
- If the
1111 (USA models) tlll (Canada
models) brake system indicator light
turns on together with the ABS and ESC
indicator lights, the ABS/ESC regulating
function may have failed. Functions that
stabilize the vehicle a re no longer avai la-
ble. This could cause the vehicle to .,.

16 Instrum ent s and w arn ing /indic ato r light s
swerve and increase the risk of sliding .
Drive carefully to the nearest authorized
Audi dealer or other qualified workshop and have the malfunction corrected.
- If the brake warning/indicator light does
not go out after a few seconds and the
park ing brake is released, or lights up
wh ile you are driving, the fluid level in
the brake fluid reservoir is too low.
If you
believe that it is safe to do so, proceed
immediately at low speed to the nearest
au thorized Audi dealer or qualified work ­
shop and have the brake system inspect­
ed.
-Always keep in m ind that afte r several
brake applications, yo u will need greater
pressure on the brake peda l to stop your
vehicle. Do not re ly on stra ined brakes to
respond w ith maximum stopp ing power
in critical situations. You must a llow for
increased brak ing dista nces. The extra
distance used up by fad ing brakes could
lead to an acc ident.
:fil.J{®) Electromechanical park ing b rake
The warning/indicator light monitors the
electromechanical parking brake .
If the indicator light. (USA models)/ .
(Canada models) turns on, the park ing brake
was set .
The warning/indicator light will go out when
the park ing brake is released.
• (USA model s) ;a (Canada model s) Cau­
tion: Vehicle pa rked too steep
If the in dica tor light blinks and the message
appears, there is not eno ugh braking power to
keep the vehicle from ro lling . The brakes have
overheated . The vehicle could ro ll away even
on a small incline.
Pre ss brake pedal to rele ase parking br ake
To release the parking bra ke, press t he b ra ke
pedal and press the button<®> or start driving
with s tart ing ass ist at the same time
¢ page 88.
Plea se relea se parking brake
T o re lease the par king brake manually, p ress
t h e b rake pedal and press the button<®> at
the same time. The parking brake on ly re leas­
es automatically if the driver's safety be lt is
fastened.
Ill Parking brak e!
If the Ill ind icator light turns o n and this
message appears, there is a parking b rake
malfu nction . D rive to your author ized Audi
dealer or qualified workshop immediately to
have the malfunct ion corrected.
.ft Safety belts
This warning/indicator light reminds you to
put on your safety belt.
The . war ning/ indicato r light illum inates
whe n the ignition is switched on to remind
t h e d river and (o n USA models on ly) any front
passenge r to p ut on the s afety be lt. Ad dit ion­
ally, an acoustic warning (gong) will also
sound .
Fo r more In format ion ¢
page 136, Safety
belt warning light.
D Battery
T he . warning/indicator light illuminates
when you switch on the ignition and must go
o ut after the engine has started.
• Alternator fault : Battery is not being
charged
If the indicator l ight turns on and the mes­
sage appears, there is a mal funct ion in the
generator or veh icle electrical system .
D rive to your authori zed A udi dealer or quali­
fied wor kshop immed iate ly. Because the ve hi­
cle b attery is discharg ing, turn
off all unnec­
essa ry e lec trical equipmen t such as the rad io.
Seek professiona l assistance if the battery
charge level is too low.
(•) Low battery : Battery will b e charged
while dri ving ..,.

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Instruments and warning/indicator lights 17
If the indicator light turns on and the mes ­
sage appears, there may be limited starting
abi lity.
If th is message turns
off after a litt le while,
the battery charged enough whi le driving.
If the message does not turn
off, have your
authorized Audi dealer or qua lified workshop
correct the malfunction.
~ Engine oil pressure
The red engine oil pressure warning symbol
requires immediate service or repair. Driving
with a Low-oil-pressure indication is Likely to
inflict severe damage to the engine .
• Turn off engine! Oil pressure too low
If the indicator light turns on and the mes­
sage appears, the oil pressure is too low.
.,. Pull
off the road.
.,. Stop the vehicle .
.,. Turn
off the engine .
.,. Check the engine oil level ¢ page 216 .
.,. If the engine oil level is too low, add engine
oil ¢
page 216 . Make sure that the oil pres­
sure warn ing symbol. appears no longer
in the disp lay before you start driving again.
.,. If the engine oil level is correct and the indi­
cator light st ill turns on, turn the engine
off
and do not continue driving. Seek professio­
nal assistance.
(l) Tips
- The engine oil pressure symbol. is
not an indicator for a low engine oil lev­
el. Do not rely on it. Instead, check the
oil level in your engine at regular inter­
vals, preferably each time you refuel,
and always before going on a long trip.
- The yellow oil level warning indication
II requires oil refill or workshop serv·
ice without delay. Do not wait until the
red oil pressure warning. starts to
flash before you respond to the low oil
level warning
l!I. By then , your engine
may already have suffered serious dam­
age.
~ Engine oil level
• WARNING: Please add oil immediately
If the indicator light and the message appear,
add engine oil immediately¢
page 214.
II Add oil, max XXXX l. You may cont. driv .
When the symbol l!I and driver message ap ­
pear, add the amount of oil appearing in the
display at the next opportunity ¢
page 214.
-L Engine cooling system
A malfunction in the engine cooling system
must be repaired as soon as possible.
• Turn off engine and check coolant level
If the indicator light turns on and the mes­
sage appears, the coolant temperature is too
high or the coolan t leve l is too low .
.,. Pull
off the road .
.,. Stop the vehicle .
.,. Tu rn
off the engine .
... Check coolant level¢
page 218 .
.,. Add coolant if necessary¢ page 219.
.,. Continue driving on ly after the engine cool­
ant warning/indicator light goes out .
.,. Contact your authorized Audi dealer for as-
sistance if necessary.
If the engine coo lant level is correct, then the
radiator fan may be the cause of the malfunc­
tion.
• Coolant temperature! Let engine run
with vehicle stationary
If the indicator light turns on and the mes­
sage appears, let the engine run at id le for a
f ew m inutes to coo l down .
_& WARNING
-If your vehicle should break down for
mechanical or other reasons, park at a
safe distance from moving traffic, turn
off the eng ine and turn on the hazard
warn ing lights
¢page 51, Emergency
flashers.
-

18 Instrum ent s and w arn ing /indic ato r light s
-Never open the hood if you see or hear
steam or coolant escaping from the en­
gine compartment -you risk being scald­
ed . Wait until you can no longer see or
hear steam or coo lant escaping.
- The engine compartment of any veh icle
is a dangerous area . Before you perform
any work in the engine compartment,
turn of the eng ine and allow it to cool.
Follow the wa rning sticke rs
qpage 212.
{[) Note
Do not co ntinue driving if the. symbol
illuminates . There is a malfunct ion in the
engine cooling system -you could damage
your eng ine .
@-Steering column lock
• Stee ring def ective! D o not drive vehicle!
If the indicator light turns on and the mes­
sage appears, the re is an elect ronic steer ing
col umn lock ma lfunction. You ca nnot switch
the ign ition on.
Do
not tow your vehicle because it ca nnot be
steered. Seek professional ass istance.
Ill! Ste ering lock: Contact d ealer!
If the indicator light t urns on and the mes­
sage appears, there is an electronic steer ing
column lock malfunction.
Drive to yo ur authorized Audi dea le r immedi­
ately to have the malfunction corrected .
A WARNING
-
Your vehicle must not be towed in the
event of a malfunct ion in the electron ic
steering column lock because it cannot be
steered due to the locked steering .
If it is
tow ed w ith th e stee ring lock ed, there is
the risk of a n accident .
©-Ignition lock
• Ignition lock d efe ctive. Contact d eal er! If
the indicator light turns on and the mes­
sage appears, do
not switch the ignition off
because you may not be ab le to sw itch it on
again.
Drive to your authorized Audi dealer immedi­
ately to have the ma lfunction corrected.
On vehicles with conve nience key*, the engine
shou ld not be switched off using the
I STAR T ENGINE ST OPI button because the en­
gine cannot be started again after the ignition
has been switched off.
(D Tips
The symbol's appearance might be differ­
ent in some mode ls.
FJ,/ ~ Electronic Stabilization Control
(ESC)
If the Jj] ind icator light blinks while driv ing ,
the ESC or ASR (Anti-Slip Regulation) is active­
ly regu lating.
If the D] ind icator light turns on , the system
has switched the ESC off . In this case, you can
switch the ign ition off and then on to switch
the ESC on aga in. The ind icator lig ht tu rns off
whe n the system is functioning f ully.
If the
II ind icator light turns on, ESC was re­
stricted or sw itched off us ing the !.$
O FFI but­
ton
q page 185 .
Stabilizat ion control (ESC /ABS ): Fault! See
own er' s m anual
If the indicator light DJ and the ABS indicator
light
fJD (USA models) ; tiJ (Canada models)
turn on and the message appears, the ABS or
electron ic different ial lock is malfunctioning .
Th is also causes the ESC to malfunction . The
brakes still function with their normal power,
but A BS is not active.
D rive to your author ized Audi dealer immedi­
ately to have the malfunction corrected .
For more info rmation about the ESC
q page 185 .

20 Instruments and warning /indicator lights
vehicle repaired immediately by your au­
thorized Audi dealer or qualified work­
shop. Drive slowly and avo id sudden,
hard brake applications.
~ J!f Safety systems
The
II (USA models)/ m (Canada models) in­
d icator light monitors the safety systems (e .g .
a ir bags, pretensioners) and illuminates for a
few seconds each time you switch the ignition
on.
If the
ffl (USA models)/ EI (Canada models)
indicator light does not go out, or if it illumi­
nates whil e you are driv ing, or if it sta rts to
b link , then there is a malf unction somewhere
in the system. If the light does not illuminate
when you switch the ignition on, this also
means there is a ma lfunction.
A WARNING
If you have a malfunction in the safety sys­
tems, contact your authorized Audi dealer
immediately . Otherwise the safety sys­
tems may not work properly in an acci­
dent .
(0) Worn brake pads
Ell Brake pads!
If the warning light illumina tes, immediately
contact your authorized Audi dealer or quali ­
fied workshop to have all brake pads inspect­
ed. On USA models the warning light
Ei'I
comes on together with the warn ing light
1111 -Both sets of b rake pads on an axle
must always be replaced at the same time .
A WARNING
Driving with bad brakes can cause a colli­
sion and serious personal injury.
- If the warning light
Ell and the warning
light
11111 ) with the message Brake
pads! comes on in the instrument cluster
l) - : USA mod els only
-
display, immediately contact your au­
thorized Audi dealer or qualified work­
shop to have all brake pads checked or replaced if necessary.
EPC Electronic power control
This warning/indicator light monitors the
electronic power control.
The ~ warning/indicator light (Electronic
Power Control) illuminates when you switch
the ignition on as a function check.
(D Tips
If this warning/indicator light illuminates
while you are driving, then there is a mal­
function in the engine electronics. Have
the malfunct ion corrected as soon as pos­
sible by your authorized Audi dealer or a
qualified repair facility.
0 Malfunction Indicator Lamp (MIL)
Th e Ma lfunction Indicator Lamp (MIL) is part
of the On-Board Diagnostic (OBD II) system.
T he symbo l¢• lights up when the ignition is
switched on and will turn off after the engine
has started and has settled at a constant idle
speed. This indicates that the MIL is working
properly.
T he warning light illuminates when there is a
malfunction in the engine electronic system .
Contact your authorized Audi dea ler and have
the malfunction corrected.
An improperly closed fuel filler cap may a lso
cause the MIL light to illuminate
~ page 210.
For more information ~page 29.
!?; Engine speed limitation
Applies to vehicles: with engine speed limitation
(II Do not exceed max. engine speed of
XX.XX rpm

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Instruments and warning/indicator lights 21
The IJI symbol illuminates when there is an
engine control malfunction. The
[3i indicator
light in the instrument cluster also illumi­
nates . The engine speed is limited to the
speed d isplayed in the driver information sys­
tem . Keep in mind that the eng ine speed will
not exceed the value displayed in the drive r in­
formation system , for example when down­
shifting.
Drive to your authorized Aud i dealer immedi ­
ately to have the malfunct ion corrected.
'l=cr .., Engine oil sensor
• Oil level! Sen sor defective
If the symbol illuminates, contact your au­
thor ized Audi dealer and have the o il sensor
i nspected . Until you have th is done, check the
oil level each time you refuel just to be on the
safe side
c::> page 216.
Bil Tank system
mJ Please refuel
If the indicator light turns on for the first
time and the message appears, there are
about 2.1- 2.4 gallons (7 -9 liters) of fuel left
in the tank. Time to refuel
c::> page 209 .
DD Fuel tank system malfunction! Contact
dealer
If the indicator light turns on and th is mes ­
sage appears, there is a malfunction in the
tank system .
Drive to your authori zed Aud i dealer immedi­
ately to have the malfunction corrected.
<:o Windshield washer fluid level
B Please refill washer fluid
If the symbol illumina tes, add windshield
washer fluid to the washer system and also to the headlight washer system *
c::> page 225.
~ Windshield wipers
m Windshield wiper defective
There is a malfunction with the windshie ld
wipers .
Drive to your authorized Audi dealer immed i­
ate ly to have the malfunction corrected .
~/ }D 10$ Defective light bulb warning
If the f:I indicator light turns on, a bulb has
failed. Th e message indicates the location of
the bu lb .
- If the
II indicator light also turns on, then
a fog light has failed . The position of the in­
dicator light corresponds with the location
on the vehicle .
- If the
IJ indicator light also turns on, then
a rear fog* light has failed . The position of
the indicator light corresponds with the lo­
cation on the vehicle.
T his warning can also occ ur if the light switch
is in an unengaged position between two sym­
bols.
Vehicle lights : System fault!
If the message appears, there is a malfunc­
tion in the headlights or light sw itch.
Drive to your au thorized Audi dealer immedi­
ately to have the malfunction corrected .
A WARNING
-Light bulbs a re p ressurized and could ex­
plode wh ile they are being changed caus­
ing serious personal injury.
- Work with due care when hand ling the
high-voltage section of gas discharge
(xenon) lights*. Failure to do so could re­
sult in death or serious injury .
(D Tips
Have the bu lb replaced or the connection
r epaired by your authorized Audi Service
department .
i,0 Headlight range control
Applies to veh icles : w ith headli ght ra nge control
liJ Headlight range control defective !

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Driver information
display
Introduction
The Driver information display inside the in ­
strument cluster provides you, the driver ,
with important information .
Fig. 7 In strum en t cl ust er: center displa y
Fi g. 8 Wi per lever: con trols fo r the menu display
Cent er d ispla y
With the ignition on, the display in the Dr iver
I nforma tion System shows the fo llowing in­
formation :
- CD* inserted or Radio* station set
- Outs ide temperature* : At temperatures be-
low 41 °F (+S
0 (), a snowflake symbol ap­
pears in front of the temperature display
c::> &_ .
- Warning if one of the doors, front lid or en-
gine compartment lid is not closed .
Additional function s
You can open the following functions in the
Driver Informat ion System display by pressing
the
! R ES ET I button c::> fig . 8 one or more times:
Digital speedometer *
Tire pressure monitoring*
c::> page 257
Dri ver inform ation di spl ay 23
Trip computer* c::> page24
Effi ciency program* c::> page 26
Service in terval display c::> page 28
Speed war ning c::> page 89
Gearshift selector positions <=> page94
Automatic transmission
Adaptive cr uise control *
c::> page 101
Auto Check C ontrol
Some f unctions and vehicle components are
scanned for their operating sta tus when yo u
switch the ign ition on and wh ile you are driv ­
ing . Malfunctions or required s ervice proce­
dures are signaled audib ly and indicated by
red and yellow illuminated symbols and re­
minders in the display .
A WARNING
-
- Never rely exclusively on the outside
temperature display to determine if a
road surface is icy o r not . Keep in m ind
th at r oad surfaces, espec ia lly br idges
and overpasses, co uld be ice covered and
slippery even at an outside tempe ratu re
above 41 ° F (+S °C).
- Always remember , even if the "snow­
f lake" symbo l (ice warning) does not ap­
pear in the d isp lay, black ice cou ld be on
the road .
- Always reduce your speed and drive with
special care in cold weather conditions
when the chance of encountering icy
road surfaces increases.
{I) Tips
If the vehicle is stationary, or if yo u a re
driving at a very lo w speed, the tempera­
ture shown in the display might be s light ly
higher than the actua l outs ide tempera­
ture. This is caused by the heat be ing radi­
ated from the engine .

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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). .,.