2017 AUDI A4 light

Cockpit overview
If the light does not turn off after starting the
engine
or turns on while driving, this may indi·
cate that there is a malfunction in the eng ine. If
the indicator turns on , the catalytic converter
may be damaged.
Drive
with reduced engine performance (avoid
h ig h speeds for extended periods of time and/ or
fast acce leration) and have the malfunction cor­
rected. See an authorized Aud i dealer or author­
ized Audi Service Fac ility .
The electronic speed limiter may be faulty if the
indicator light turns on. For additional informa­
tion, refer to
¢ page 93, Electronic speed limit­
er .
The MIL indicator light may also turn on if the
fuel filler cap is not closed correctly
¢page 298.
On-Board Diagnostics
Fig . 24 Locat ion of Data Link Connector (D LC)
On-Board Diagnostics monitors the components
of your emission control system. Each monitored
component in your engine system has been as­
signed a code . In case of a malfunction, the com­
ponent w ill be identified and the fault stored as a
code in the control module memory.
The MIL light may also illuminate if there is a
leak in the on-board fuel vapor recovery system .
If the light illuminates after a refuel ing, stop the
veh icle and make sure the fue l filler cap is prop­
erly closed (on ly vehicles with gasol ine engine)
¢page 298.
In order to make an accurate d iagnosis, the stor­
ed data can only be disp layed using specia l diag­
nostic equipm ent (ge ne ric scan tool for OBD) .
26
In order to connect the special diagnostic equip­
ment, push the plug into the Data Link Connector
(DLC). The DLC is located to the r ight of the hood
release
¢ fig. 24.
Your authorized Audi dea le r or qualified work­
shop can interpret the code and perform the nec­
essary repair.
_& WARNING
Do not use the diagnostic connector for per­
sonal use. Incorrect usage can cause malfunc­
tions, which can increase the risk of a colli­
sion!
Indicator lights
Description
The indicator lights in the instrument cluster
blink or tur n on. They indicate functions or mal­
funct ions.
-
Messages may appear with some indicator lights .
A warning signal will sound at the same time.
The ind icator lights and messages in the instru­
ment cluster disp lay can be covered by other dis­
plays. To show them again, select the second tab
with the multifunction steering wheel ¢page 12.
If there are several ma lfunctions, you can display
them one at a time using the thumbwheel.
Some indicator lights in the display can display in
several colors.
& Central indicator lights
If
the . or Q indicator lig ht turns on, check
the message in the instrument cluster.
Overview
Some indicator lights turn on briefly as a function
check when you switch the ignition on. These sys ­
tems are marked with a ./ in the fo llow ing tables.
If one of these ind icator lights does not turn on,
there is a malfunction in that system.
Your vehicle has e ither a monoch rome display or
a multicolored display, depending on vehicle
equipment . Some indicator lights appear white
1111-

<( a, .... N ,....
N .... 0 0
3 a,
on a monochrome display. The. or u centra l
indicator light turns on at the same time to indi­
cate the priority of these ind icator lights.
Red indicator lights
--------------
Central indicator light
c::> page26,
Aud i pre sense*
c::> page 10 7
USA models:
Brake system ../
c::> page 29
Canada models :
Bra ke system ../
c::> page 29
USA models:
Electromecha nical parking brake
c::> page 30
Canada models:
Electromechanica l parking brake
c::> page30
Cooling system
c::> page 31
E ng ine oi l pressure
c::> page 32
Eng ine oil level
c::> page 32
Generator
c::> page 31
Safety belt
c::> page 31
Electromechanical steering../
c::> page 13 7
Steering lock
c::> page 32
E ng ine start system
c::> page32
Transmission
c::> page 87
Adapt ive cruise control*../
c::> page 98
Congestion assist*
c::> page 104 Cockpit overview
Ad B lue*
c::> page 300
Ad Blue*
c::> page 300
Yellow indicator lights
--------------
Central indicator light
c::> page 26
E lectronic Stabilization Contro l
(ESC)
c::> page 32
El ectronic Stabilization Control
(ESC) ../
c::> page 32
Electronic Stabiliza tion Control
(ESC)
c::> page 13 5
Brake system
c::> page 33
USA models:
Anti-lock braking system (ABS)../
c::> page 32
Canada models:
Anti-lock b raking system (ABS)../
c::> page 32
Safety systems ../
c::> page 33
USA models:
Brake pads
c::> page 33
Canada models:
Brake pads
c::> page 33
El ectromechanical parking brake
c::> page 30
T ire pressure
c::> page 335
Tire pressure
c::> page 335
Engine control
c::> page 33
Engine contro l (diese l engine)
c::> page 33
27

Cockpit over view
28
Malfunct ion Indicato r Lamp (MIL)
./
c::>page33
Diesel particulate filter*
c::>page34
Engine speed limitat ion
c::>page34
Engine oil level (MIN)
c::>page32
E ngine oil level (MAX)
c::>page308
Engine oil senso r
c::>page34
Eng ine warm -up request
c::>page34
Battery charge
<=:>page 31
Tank system
c::>page34
Washer fluid level
c::>page35
Windshield wipers
c::>page35
Remote control key
<=:>page 76
Driver's door
c::>page35
Ba ttery in remo te cont rol key
c::>page39
Bulb failure ind icator
c::>page35
H eadlight ra nge control system
c::>page35
Adapt ive lig ht*
c::>page36
Light/rain sensor
c::>page36
Active lane assist*
c::> page 113
Transmission
c::> page87
Steering lock
c::>page32
Engine start system
<=:>page 32
Electromechanical steering
c::> page 13 7
Suspension con trol*
c::> page36
Parking sys tem*
c::> page 132
E mergency call f unct io n*
<=:>page 185
Ad Blue*
c::>page300
Ad Blue*
c::>page300
Other indicator light s
--------------
Turn signals
c::> page36
Cruise contro l system*
<=:> page 93
Canad a model s:
Cruise cont rol sys tem*
<=:> page 93
Adaptive c ruise control *
¢page 98
Adaptive cruise contro l*
<=:> page 98
Adaptive cruise contro l*
¢ page 98
Adaptive c ruise contro l*
¢ page 98
Adaptive c ruise contro l*
¢ page 99, <=:>page 102
Adaptive c ruise cont ro l*
¢ page 102
Conges tion assist*
<=:>page 104
Active lane assist*
c::> page 113

<( a, .... N ,....
N .... 0 0
3 a,
_J:L
1:1
Predict iv e e ffici ency assist *
¢ page 95
Predictive e fficiency assist*
¢page95
USA models :
Predictive efficiency assist*
¢page 95
Canada models :
Predictive efficiency assist*
¢page95
P redictive efficiency assist*
¢page 95
Predictive efficiency assist*
¢page95
Predict ive efficiency assist*
¢page95
Start/Stop system*
¢ page 78
Start/Stop system*
¢page 78
Remote control key
E> page 78
Ad B lue*
¢ page300
Automatic transm ission
¢page87
D ynamic stee ring*
¢page 137
Adapt ive cr uise control*
¢page
99,
Congestion assist*
¢ page 106
Congestion assist*
¢page 106
Aud i pre sense*
c>page 111
USA models :
Electromechanical parking brake
c>page30
Canada models :
Electromechanical pa rking brake
¢ page30 Coc
kpit o ve rv iew
Parenta l control
¢ page 45
USA models:
Speed warning system*
¢ page 93
Canad a model s:
Speed warning system*
¢ page 93
Active lane assist* ¢ page 113
Audi s ide ass ist*
¢ page 120
Camera-based traffic sign recogni­
tion* ¢ page 25
Head light assistant*
¢ page 51
High beams
¢ page 51,
Head light assistant*
¢ page 51
BRAKE/((D) Brake system
If this indicator l ight tur ns on, t here is a malfunc­
t ion in the brake system .
1111 (USA models ) /. (Canada models )
Brakes: stop vehicle and check brake flu id leve l
Stop the vehicle and check the b rake fl uid leve l.
See an authorized Audi dealer or authorized A udi
Se rvice Facility for assistance if necessary.
1111 (USA model s) /. (Canada model s)
Brakes: malfunction! Stop vehicle safely
If t he indicator ligh t turns on and this message
appea rs, the re is a ma lfunction in the brake
booster .
If the~ (USA models)/ ri] (Canada mode ls)
ABS indicator ligh t and the
J.id [SC indicator light
turn on toge ther with the
1111 (USA models)/
• (Canada models) brake system indicator light
and the message appea rs, then the ABS, ESC and
braking d istribution a re failing
c> ,&. . ..,.
29

Cockpit over view
Do not cont inue driving . See an authorized Audi
dealer or a uthorized Audi Service Facility for as­
sistance ¢& .
1111 (U SA models ) / . (Cana da m od els) Park­
ing br ake: malfun ction! Safel y stop veh icle . See
owner 's manual
-If the indicato r light a nd the message appear
when the vehi cle is st ationary or aft er sw itch­
ing the ignition on ,
check if you can release the
parking brake . If you cannot re lease the park­
i ng brake, see yo ur authorized Aud i dea ler or
authori zed Aud i Serv ice Facility . If you can re­
lease the park ing brake and the message still
appears , see an authorized Audi dealer or au ­
thorized Aud i Serv ice Facility immediately to
have the malfunction corrected .
-If the indicator light and message appear w hile
driving ,
the hill start assist or emergency brak ­
ing function may be malfunctioning .
It may not
be possib le to set the pa rking brake or release
it once it has been set. Do not pa rk your veh icle
on h ills. See an author ized Audi dealer or au ­
thorized Audi Serv ice Facility fo r ass istance .
Brake servo: re strict ed . You can continue driv ­
ing . Pleas e contact Servic e
There is a malfunction in the brake booster . The
brake booster is available, but its effectiveness is
reduced . Braking behav ior may be diffe rent from
how it no rma lly fu nctions and t he b rake pedal
may v ibrate .
Dr ive to an authorized Aud i dea le r or authorized
Aud i Serv ice Facility immediately to have the
malfunct io n corrected.
_&. WARNING
- Read and follow the warn ings in
¢ page 304, Working in the engine com­
partment
before opening the hood and
check ing the brake fl uid level.
- If the brake system indicator light does no t
turn off o r it turns on while driving, the
brake fluid level in the reservoir is too low,
and this increases the risk of an accident.
Stop the vehicle and do not continue dr iv-
30
ing . See an autho rized Audi dea ler or au­
thorized A udi Service Fac ility for assistance.
- If the brake system indicator light turns on
together w ith the ABS and ESC indicator
lights, the ABS/ESC regu lating function may
be malfunct ion ing. Functions that stabilize
the vehicle are no longer available . This
could cause the vehicle to swerve, which in­
creases the risk that the vehicle will slide. Do not co ntin ue d rivi ng. See an autho rized
Aud i dea le r or a ut horized Audi Serv ice Facili­
ty fo r ass istance .
PARK/<®)/!®)' Electromechanical parking
brake
If the -(USA mode ls) I. (Canada models)
i ndicator l ight turns on, the parking brake was
set .
If the -(USA mode ls)/ . (Canada models) in­
dicator light blinks, the braking force is not build­
i ng up enough or not building up at a ll. Se lect the
P selector lever posit ion to help secure the vehi­
cle. Make sure the indicator light is off before you
start driving .
£dJ Parking brake: mal function! Please contact
S ervice
There is a ma lf u nction in the parking brake. Drive
to an authorized Aud i dea ler or authorized Audi
Service Facility immediate ly to have the malfunc­
tion corrected.
• (USA models )/ lC~) (Canada model s) Parking
brake: caution! Vehicle parked too steep
There is not eno ugh braking force to ho ld the ve ­
hicle in p lace . T he brakes have overheated. The
vehicle could roll away even on a small incline.
• (USA model s)/¢~) (C a nada model s) Parking
brake: applied
If this message appea rs, press the b rake pedal
first and then release the parking brake if ne ces­
sary .
II (USA model s)/¢~) (Canada mode ls) Parking
brake: emerg ency braking
The emergency braking funct ion was triggered . ..,.

<( a, .... N ,....
N .... 0 0
3 a,
Please relea se parking br ake
Re lease the par king brake if this message ap ­
pears .
Please press brak e pedal to r ele as e par king
brake
To release the parking brake, press the brake
pedal and press the~ button at the same time,
or start driv ing with hill start ass ist
¢ page 82,
Starting from a stop .
(D Tips
For additional information on the parking
brake, refer to ¢
page 81.
_L Cooling system
• Turn off engin e and che ck co olant le vel.
The coolant level is too low.
Do not continue driving and switch the engine
off. Check the coolant level ¢
page 310.
-If the coolant leve l is too low, add coolant
~ page 310. Only continue driv ing once the in­
dicator light turns off.
• Coolant temperature : to o high . Let engine
run with vehicle s tati onar y
Let the eng ine run at idle for a few minutes to
cool off, until the ind icator light tu rns off.
- If the indicator light does not turn off, do not continue driving the vehicle. See an author ized
Audi dealer or author ized A udi Se rvice Facility
for assistance.
_& WARNING
- Never open the hood if you ca n see or hear
steam o r coolant escaping from the engine
compartment. This increases the risk of
burns . Wait until you no longer see or hear
steam or coolant escap ing .
- The engine compartment in any veh icle can
be a dangerous area. Stop the engine and
allow it to cool before working in the engine
compartment. A lways follow the informa­
t io n found in
¢ page 304, Working in the
engine compartment.
Coc kpit o ve rv iew
(D Note
Do not continue driv ing if the . indicator
light turns on as this increases the risk of en­
gine damage.
~ -Safety belt
The . indicator light stays on until the dr iver 's
and front passenger's safety belts are fastened .
Above a certa in speed, there will also be a war n­
ing tone.
@ Tips
For additional informat ion on safety belts, re ­
fer to¢
page 245 .
0 Generator/battery
If the . or(•) indicator light t urns on , the re is a
malfunction in the generator or the vehicle e lec­
t rical system .
• Electric al sy stem: malfunction! Saf ely stop
v e hicle
Do not continue dr iving and switch the engine
off . See an authorized Audi dealer or authorized
Audi Se rvice Facility for assistance .
(•j Electrical system: mal function! Re start not
po ssible . Plea se co ntac t Se rvice
Disconnecting the vehicle battery from the elec­
trical system prevents it from d ischarging. Drive
to an authori zed Aud i dealer or authori zed Aud i
Service Facility immed iately .
Do not stop the engine, or you w ill not be able to
start it again. If you can no longer start the en­ gine, see an authori zed Audi dealer or autho riz ed
Audi Service Facility for assistance .
(•) Electri cal system: malfunction! Ple ase con­
tact Se rvice
Drive to an authori zed A udi dealer or authorized
A udi Service Facility immediate ly. Because the ve­
hicle battery is discharging, turn off a ll unneces­
sary electrical equipment such as the rad io. See
your authori zed Aud i dealer or authori zed Audi
Service Facility if the battery charge level is too
~w . ~
31

Cockpit overview
(•) Electrical system: low battery charge. Plea se
turn on ignition
The start ing ability may be impaired.
If th is message turns off after a little while , the
battery charged enough while driving.
If the message does not turn off and stay off
when dr iv ing, have an authorized Aud i dea ler or
author ized Audi Service Facility repair the mal­
function .
~ Engine oil pressure
• Turn off engine. Oil pressure too low
Stop the eng ine and do not continue driving .
Check the engine oil leve l¢
page 308 .
- If the engine oil level is too low, add engine o il
c=>page 308. Only cont inue driving once the in­
dicator light turns off.
- If the engine oil leve l is correct and the indica­
tor light st ill turns on, turn the eng ine off and
do not continue driving. See an authorized Audi
dealer or authorized Audi Service Fac ility for as­
sistance .
(D Tips
The oil pressure warning is not an o il level in­
dicator . Always check the o il level regularly .
~ Engine oil level (MIN)
• Please add oil immediately.
Add engine o il immed iate ly ¢page 308 .
l!I Please add max. x qt (l) oil. You can contin­
ue driving
Add the maximum amount of oil indicated in the
display as soon as possible
¢page 308.
~- Steering lock
• Steering : malfunction! Please stop vehicle
There is a malfunction in the elect ronic steering
lock . You cannot turn the ignition on.
32
Do not tow your vehicle because it cannot be
steered. See an authorized Audi dealer or author­
i zed Audi Service Facility for assistance.
1!11 Steering lock: malfunction! Please contact
Service
There is a malfunction in the electron ic steering
lo ck.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immed iate ly to have the
malfunction corrected .
& WARNING
Do not tow your vehicle when there is a mal­
function in the electron ic steering lock -this
increases the risk of an accident .
-e Engine start system
• Engine start system: malfunction! Please
contact Service
-
Do not switch the ignition off, or you may not be
able to switch it back on.
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediately to have the
malfunction corrected .
13 Engine start system: malfunction! Please
contact Service
There is a ma lfunction in the engine starting sys­
tem .
Drive to an authorized Audi dealer or authorized
Audi Service Facility immediate ly to have the
malfunction corrected.
f;. ![J Electronic Stabilization Control (ESC)
If the Ii) ind icator light blinks while driving, the
ESC or ASR (ant i-slip regu lation) is actively regu­
l ating.
If the
DJ ind icator light turns on, the system has
switched t he ESC off . In t his case, you can switch
the ignit ion off and then on to switch the ESC on
again. The indicator light turns off when the sys-
tem is functioning fu lly. .,..

<( a, .... N ,....
N .... 0 0
3 a,
If the II indicator light turns on, ESC was
switch ed off us ing the
!~0" 1 button ¢ page 134.
Stabili zation c ontrol (ESC / ABS) : malfun ction!
See owne r's manual
If the: G1 indicato r light and the~ (USA mod­
els)/ [iJ (Canada models) A BS i ndicator light tur n
on and the message appears, the re is a malf unc­
tion in the ABS or the elect ronic differen tial lock.
This a lso ca uses the ESC to malfunct ion . The
brakes still function with their norma l power, but
ABS is not active.
Drive to an autho rized Aud i dea ler o r a uthorized
Aud i Service Facility immediately to have the
malfunction corrected.
@ Tips
For addit ional information on ESC and A BS,
refer to ¢
page 134.
!f Safety systems
The El indicator light monitors the safety sys­
tems.
If the El indica tor light turns on or blinks, there
is a malfunction in a safety system .
Drive to an autho rized Aud i dea le r or a uthorized
Aud i Service Fac ility immediately to have the
malfunct ion corrected.
A WARNING
-
Have the safety systems inspecte d immedi­
ately. Otherwise, there is a risk that the sys­
tems may not activate during a collision,
which increases the risk of serious injury or
death .
(CD ) Brake system
[I] Brake s ov erheating . Plea se shift to D
T here was a heavy load on the b rakes. Place the
selector lever in the D/S posi tion in o rder to use
the eng ine braking e ffect and reduce the load on
the brakes .
Cockpit o ve rv iew
'IJ!t:t /(0) Brake pads
II (USA model s)/Ei] (Canada mod els ) Brake
pad s: wear limit rea ch ed. You can continue dri v­
ing . Pl ea se conta ct Service
T he brake pads are worn.
Drive to an au thorized Audi dealer or authorized
Audi Service Facility as soon as possible to have
the malfunc tion corrected .
~ Engine control
II Drive sy stem : malfun cti on! Pleas e contact
Servi ce
T here is an eng ine control malfunction .
Drive slowly to an a uthori zed Audi dea ler or a u­
thori zed Audi Serv ice Facility to have the engine
checked.
W Engine control (diesel engine)
App lies to : vehicles wit h diese l eng ines
The eng ine is preheating if the El ind icator light
turns on when the ignition is switched on .
If the indica tor light does not turn on or blinks
while driving, there is an engine control malfunc ­
t io n.
Immed iate ly drive s low ly to an authori zed Audi
dealer or au thorized Audi Service Fac ility to have
the malfunction corrected .
io Malfunction indicator lamp (MIL)
The malfunction indicator lamp (MIL) is part of
t h e On Board Diagnost ic system (OBD II) . T he
¢..ij c;ymbo l tur ns on when the igni tion is sw itched
o n a nd turns off aga in once the igni tion swi tc h es
on and running at a steady id le speed . This i ndi ­
cates that the MIL is functioning correctly.
T he ind icator light tu rns o n if there is a malfu nc­
t ion in the engine elec tronics . See an au thor ized
Audi dealer or authorized A udi Service Fac ility to
have the malfunction corrected. For additional
information, r efer to ¢
page 25 .
The ind icator light can also tu rn o n if the fuel fill­
er cap was not sealed correctly ¢
page 298.
33