2016 AUDI A4 check engine light

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Safety belts . . . . . . . . . . . . . . . . . . . . . . . . 133
Belt tensioners . . . . . . . . . . . . . . . . . . . . . . 136
Airbag system . . . . . . . . . . . . . . . . . . . . 138
Important information . . . . . . . . . . . . . . . 138
Fr ont airbags . . . . . . . . . . . . . . . . . . . . . . . 142
Monito ring the Advanced Airbag System . 148
Side airbags . . . . . . . . . . . . . . . . . . . . . . . . 1S2
Side curtain airbags . . . . . . . . . . . . . . . . . . lSS
Child safety . . . . . . . . . . . . . . . . . . . . . . 1S8
Important information . . . . . . . . . . . . . . . 158
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . 163
Securing child seats . . . . . . . . . . . . . . . . . . 167
LATCH system (Lower anchorages and
tethers for children) . . . . . . . . . . . . . . . . . 171
Addit ional information 175
Driver messages . . . . . . . . . . . . . . . . . 176
Intelligent Technology . . . . . . . . . . 176
Notice about data recorded by the Event
Data Recorder and vehicle control
modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
E lectronic Stabilization Control ( ESC) . . . . 177
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Electro-mechanical power assist, dynamic
steering . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Driving with your quattro . . . . . . . . . . . . . 182
Energy management . . . . . . . . . . . . . . . . . 182
Driving and the environment . . . . 185
Breaking in . . . . . . . . . . . . . . . . . . . . . . . . . 185
Avoid damaging the vehicle . . . . . . . . . . . 185
Driving through water on roads . . . . . . . . 185
Cata lytic converter . . . . . . . . . . . . . . . . . . . 186
Shutting down vehicle . . . . . . . . . . . . . . . . 186
Economical and environmentally-friendly
driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
allroad: D riving offroad . . . . . . . . . . . . . . . 188
Trailer mode . . . . . . . . . . . . . . . . . . . . . 190
Driving with a trailer . . . . . . . . . . . . . . . . . 190
Trailer mode notes. . . . . . . . . . . . . . . . . . . 192
Operating instructions ...... .. .. .
Care and cleaning ........... .. .. .
General information ..... ... .. .. .. .. . 193
193 193
~ Car washes . . . . . . . . . . . . . . . . . . . . . . . . . 193 ..... v:, .....
Table of contents
Cleaning and care information . . . . . . . . . 194
Placing your v ehicle out of service . . . . . . 197
Fuel and Refueling . . . . . . . . . . . . . . . 198
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Refueling . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Checking and Filling . . . . . . . . . . . . . 203
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Engine compartment . . . . . . . . . . . . . . . . . 20S
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Cooling system . . . . . . . . . . . . . . . . . . . . . . 208
Brake fluid .. .. .. .. ... ........... ... 2 11
Battery ......... .. ................. 212
Windsh ield/headlight* washer conta iner. 216
Wheels ...... .. .. ................. 217
Wheels and Tires ... ...... ....... .. .. 217
Tire pressure monitoring system 235
Troubleshooting . . . . . . . . . . . . . . . . . 237
Emergency assistance . . . . . . . . . . . 23 7
Vehicle tool kit . . . . . . . . . . . . . . . . . . . . . . 23 7
Space-saving spare tire (compact spare
tire) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Inflatable spare tire . . . . . . . . . . . . . . . . . . 238
Inflating inflatable spare tire . . . . . . . . . . 239
Replacing wheels . . . . . . . . . . . . . . . . . . . . 240
Fuses and bulbs . . . . . . . . . . . . . . . . . . 246
Fuses..... .... .. ......... .... .... .. 246
Bulbs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Emergency situations . . . . . . . . . . . . 250
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Starting by pushing or towing . . . . . . . . . . 250
Starting with jumper cables . . . . . . . . . . . 250
Useofjumpercables ................. 251
Towing with a tow truck . . . . . . . . . . . . . . 252
Raising the vehicle . . . . . . . . . . . . . . . . . . . 254
Technical data . . . . . . . . . . . . . . . . . . . . 255
Technical data . . . . . . . . . . . . . . . . . . . . 255
Vehicle identification ......... ...... . .
Weights ... ... .. .. ................ .
Dimensions .. .. . ... ................ . 255
255
256
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A WARNING
-Always observe the warning in ¢ page 203,
before opening t he hood and checking the
engine coolant level.
- Never open the engine hood if you see or
hear steam, or if you see engine coolant
dr ipping from the engine compartment. You
cou ld burn yourself. Let the engine cool off
firstsothatyoucannothearo rseeany
steam or engine coo lant.
0 Note
- Mounting additional lights or accessories in
front of the air inlets reduces the cooling ef­
fect of the radiator. At h igh outside temper­
atu res or high engine load, the engine could
overheat.
- The front spoiler has been designed to prop­
erly distribute the cooling air when the vehi­
cle is moving. If the spoiler is damaged, this
could reduce the cooling effect and the en­
gine could then overheat. Ask your author­
ized Audi dealer for assistance.
Tachometer (engine rev counter )
The tachometer indicates the engine RPM (revo­
lutions per minutes).
If engine RPM drops below 1,500, you should
downshift to the next lower gear. The red area at
the end of the scale indicates maximum permis­
sible eng ine RPM after the break-in period. Be­
fore reaching this area, move the selector lever
to position D/5 or ease your foot off the accelera­
tor pedal.
(D Note
The tachometer needle@¢ page 10, fig. 3
should only briefly be in the red zone: you
could damage your eng ine! The beginning of
the red zone varies depending on the engine.
@ For the sake of the environment
Upshifting early saves fuel and reduces en­
gine noise.
Instruments and indicator lights
~button
Fig. 4 SET button in the instrument cluster
The !SET I button performs the following func­
tions:
Switching on time, date, temperature
display and odometer
The display appears for approximately 30 sec­
onds when you press the
ISETI button¢ fig . 4
with the ignition off.
Starting the Auto-Check sequence
The Auto-Check system constantly monitors cer­
tain indiv idual functions and components of the
vehicle when the ignition is turned on and when
the vehicle is moving.
With the ignition turned on, you can start the
"Auto-Check sequence" by pressing the
! SETI but­
ton. You can perform an Auto-Check sequence
when the vehicle is stat ionary and the ignition is
turned on or when the vehicle is moving slower
than 3 mph (5 km/h).
In addition, the number of keys initialised for
your vehicle is displayed.
L2 3/3 means that
th ree keys have been initialised. This feature e na­
bles used car buye rs to make su re they have re­
ceived all of the keys.
If you are given only two keys, for instance, you
should take the veh icle and the existing keys to
an authorized Audi dealer to have the missing key
disabled. It is also important to notify your insur­
ance company about the loss.
Setting the speed warning
By pressing the ISETI button briefly, you can set
threshold 1 of the speed warning wh ile you are
driv ing
¢page 88. By ma intaining pressure on
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0 ::..:: co ..... ..... Indicator lights
Description
The indicator lights i n the inst rument cluste r
b link or t urn on. They ind icate func tions or ma l­
f u nctions ¢& .
Messages may appea r with some indica to r li ghts.
A wa rni ng sig nal w ill sound at the same time.
The messages disappear aga in after a short t ime.
To d isp lay a mess age ag ai n, p ress t he
ISE TI bu t­
ton ¢
page 11. If severa l ma lf u nctions occur,
each of the indicator/warning lamps will be dis­
p layed i n succession for abo ut two seconds at a
time.
Some ind icators ligh ts in the disp lay can turn o n
in several colo rs.
8_ WARNING
- Failure to heed warning lights and other im­
portant vehicle informat ion may result in
serious persona l injury or vehicle damage.
- Whenever sta lled or stopped for repair,
move th@ vehicle a safe distance off th@
road , stop the engine, and turn on t he
eme rgency flasher ¢
page 50.
-The engine compartment of any motor vehi ­
cle is a potentia lly hazardous a rea . Befo re
yo u check any thing in the engine compart­
m en t, stop the engi ne a nd let it cool dow n.
Alway s exe rcise ex treme c aution w hen work­
ing unde r the hood¢
page 203.
Overview
Some in dicator lights turn o n briefly to che ck the
f u nction o f that system when you swi tch the ig ni­
tion o n. These systems are marke d with a ./ in
the following tables . If one of these indicator
lights does not turn on, there is a malfunction in
that system.
Red indicator lights
--------------
US A models:
Brake system ./
¢page 15
Instruments and ind icator lights
Canada model s:
Br ake system ./
¢page 15
USA models:
Electromechanical parking brake
¢ page 16
Canada models:
El ectromec hanic al p arking b rake
¢ page 16
Safety be lts
¢ page 16
Electromechanical steering ./
¢page 181
Battery
¢page 16
Engine oi l pressu re
¢ page 17
En gine o il level
¢ page 17
En gine cooling sys tem
¢ page 17
Steering co lumn lock
¢ page 18
Ig nitio n lock
¢ page 18
USA models:
Speed warning system
¢page 87
Canada models:
Speed warning system
¢page 87
Ad ap tive cruise cont ro l./
¢ page 100
Yellow indicator lights
--------------
Elec tronic Stab ilizati on Contro l
(ESC) ./
¢page 18
El ec tronic Stab ilization Contro l
( ES C) ./
¢page 18
Electronic Stab ilization Contro l
(ESC)
¢ page 177
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0 ::..:: co ..... ..... Adaptive cr uise control*
c:>page 100
Adaptive cr uise control*
c:>page 100
High beam
c:>page49
BRAKE /((J)) Brake system
The light illuminates when the ignition is switch­
ed on.
It goes out afte r the engine has been
started. T his indicates that the brake warn ing
light is f unct ion ing properly.
If the brake warning light does not light up
when the engine i s crank ing , there may be a
malfunction in the electrical system. In th is
case , contact your author ized Audi dealer .
If the b rake system warn ing/indicato r light turns
on, there is a b rake system malfunction.
1111 ( USA models )/. (Canada models) Stop
vehicle and check brake fluid level
I f the in dicator lig ht t urns on and t he message
appears, procee d as follows:
.,. Pull off the road .
.. Stop t he vehicle .
.,. Turn off the eng ine.
.,. Check the brake flu id leve l
c:>page 211.
.,. Con tact yo ur nearest au thor ized rep air f aci lity if
ne cessary.
Warning! Fault in brake system. Contact dealer
If the ABS indicato r light fJIE) (U SA mode ls)/ li]
(Canada models), the ESC indica tor light Wand
the brake sys tem ind icator light
1111 (USA mod­
e ls)/ . (C anada models) tur n on and the mes­
sage appears, t he A BS, ES C and bra king dis tribu­
tion are no t wo rking
c:> .&. .
Ca refully drive to your author ized Audi dealer im­
m ediately to have t he m alf unc tion cor rec ted
¢ .&, .
1111 (USA models )/. (Canada models ) Park­
ing brake system fault! See owner's manual
- If the indicator light and the message appear
when stationary or after switching the igni-
Instruments and ind icator lights
tion on , check if you can rele ase the parki ng
brake. After releasing the par king brake, care ­
fully dr ive to your author ized Audi dealer im­
mediately to have the malfunct ion corrected. If
you cannot re lease the park ing bra ke, seek pro­
fessiona l assistance.
- If the ind icator light and the message appear
while driving , the emergency brak ing funct ion
may not be available. It may not be poss ible to
set the pa rk ing brake or re lease it once it has
been set . See k profess ional assis tance.
( U SA mode ls) : If the warning light
1111 and the
warning light
EiJ appear togethe r, immediately
contact your author ized Audi dea ler or qualified
workshop to have all b rake pads inspec ted
c:> page20 .
When the light comes on, an audible warning sig­
nal is also g iven .
A WARNING
--Always observe the warn ings in
c:> pag e 203 , befo re open ing the hood and
checking the bra ke fluid.
- Driving with low bra ke fluid is a safety haz­
ard. Stop the car an d get profess io nal assis­
t a nce .
- I f the
1111 (USA models)/ . (Canada mo d­
els) brake sys te m indic at or li ght tur ns on to­
ge the r with the A BS and ESC indic ator
lig hts , the A BS/ES C regu latin g fun ction m ay
h ave fa iled . Functions t hat s ta b ilize the ve ­
hicle are no longer availab le . T his co uld
cause t he ve hicle to swerve an d increase the
risk of s liding. Drive carefully to the nearest
author ized Audi dealer or ot her qualified
wo rkshop and have t he malfunc tion c orrect­
e d .
- If the b rake warning/indicator light does
not go ou t aft er a f ew seco nds and th e park­
ing b rake is r eleased, o r lights up wh ile you
a re drivi ng, the flui d level in the bra ke f lu id
rese rv o ir i s too lo w.
If yo u be lieve th at it is
saf e to do so, proceed immedia tely at lo w
speed to the ne ares t au thorized Au di de aler
or qualified workshop and have the bra ke
sys tem inspected .
15

9:::1: Engine oil pressure
The red engine oil pressure warning symbol re­
quires immediate service or repair . Driving with a
low-oil-pressure indication is likely to inflict se ­
vere damage to the engine.
• Turn off engine! Oil pressure too low
If the indicator lig ht t urns on and the message
appears, the oi l pressu re is too low.
~ P ull off the road.
~ Stop t he vehicle .
~ Turnoff the engine.
~ Check the engine oil level¢ page 207 .
~ If the engine oil leve l is too low, add engine oi l
¢
page 207 . Make sure that t he oil pressure
warning symbol. appears no longe r in the
display before you s ta rt driving ag ain.
~ If the engi ne oil leve l is cor rect and t he i ndic a­
tor lig ht still tur ns on, turn t he eng ine
off and
do not continue driving . Seek p ro fessional as ­
s istance .
(D Tips
- The engine oil pressure symbol. is not
an indicator for a low engine oil level. Do
not rely on it. Instead, check the oil level in
your engine at regular intervals, preferably each time you refuel, and always before
going on a long trip.
- The yellow oil level warning indication
Ill
requires oil refill or workshop service with ­
out delay . Do not wait until the red oil
pressure warning. starts to flash before
you respond to the low oil level warning
Ill . By then , your engine may already have
suffered serious damage .
~ . Engine oil level
• WARNING: Please add oil immediately
If the indicator lig ht and the message ap pear,
a dd engine o il i mm edi ate ly
¢page 205.
;:; Ill Add oil, max XX XX l. You may cont. driv .
0
~ When the symbol II and driver message appea r, ,....,
~ add the amount of oi l appea ring in the display at
:;;: the next opportunity¢
page 205. ,....,
Instruments and ind icator lights
-L Eng ine 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 message
appea rs, the coo lant tempe rat ure is too high o r
t h e coo lant leve l is too low.
~ Pull off the ro ad.
~ Stop the vehicle.
~ Tur noff th e engine.
~ Check coolant leve l¢ page 209 .
~ Add coolant if necessary¢ page 210.
~ Continue dr iv ing only afte r the e ngine coolant
warni ng/ indicator light goes out .
~ Contact your authorized Audi dealer for assis-
t ance if necessa ry.
If the engi ne coo lant level is correct , then t he ra ­
dia to r f an may be the cause of t he mal func tion.
• Coolant temperature! Let engine run with
vehicle stationary
If the indicator lig ht tur ns on and the messa ge
appea rs, let the engine run a t idle for a few mi ­
nutes to c ool down.
A WARNING
-- If yo ur vehicle should break down for me ­
cha nica l o r ot her reasons, park at a safe dis­
t ance from mov ing t raff ic, t urn off t he e n­
g in e a nd turn on the haz ard warning lights
¢ p age S O, Em ergency fla she rs.
- N ever open t he hood if you see o r hear
s te am or coo lant esca p in g fr om th e engine
co mpartm ent - you ris k being scald ed . W ait
un til yo u can no longe r see or hear steam or
coo lant escapin g.
- T he engine co mpart ment of an y vehicl e is a
d anger ous are a. B efore y ou perfo rm any
wo rk in the eng ine com partment, t urn of
the eng ine a nd a llow it to cool. Follow t he
warn ing stickers
¢page 203.
(D Note
Do not con tinue dr iv in g if the . symbol i llu-
minates. The re is a malf u nction in the engine
IJi,,,
17

Instruments and indicator lights
(0) Worn brake pads
EiJ Brake pads!
If the warn ing light illum inates, immed iate ly
contact your authorized A ud i dealer o r qualified
wo rkshop to have all brake pads inspected. O n
USA models the wa rni ng lig ht
EiJ comes on to ­
gethe r wi th the war ning l igh t
1111 . Both sets of
b rake pads on an ax le m ust always be rep lace d at
the same time .
A WARNING
Driv ing with bad bra kes can ca use a co llision
and ser ious personal in jury.
- If the wa rning light
EiJ and the warning
light
11111 ) w ith the message Brake pads !
comes on in the instrument cl uster display,
i mmediately contact your author ized Audi
dealer or qualified workshop to have all
bra ke pads checked o r rep laced if necessary.
EPC Electronic power control
This warning/indicator light monitors the elec­
tronic power control .
-
The~ warni ng/indicator light (Electronic Powe r
Control) ill uminates when you switch the ign ition
on as a function check.
(D} Tips
If this wa rning/in dicator light ill uminates
wh ile you are driving, then there is a mal func­
tion in the eng ine electron ics. Have the ma l­
function corrected as soon as possib le by yo ur
author ized A udi dealer or a qualified repair fa­
cility .
0 Malfunction Indicator Lamp (MIL)
The Malfunc tion Ind ica tor Lam p (M IL) is part of
the On-Boa rd Di ag nosti c (O BD II) system. The
symbo l
('4 lights up whe n the ignition is swi tch ­
e d on and wi ll turn off after the engine has sta rt·
e d and has sett led at a constant idle speed . This
i n dicates that the MIL is working p roperly.
l ) - : USA mode ls o nly
20
The wa rning lig ht ill uminates w hen the re is a
malfunction in the engine electronic system.
Contact yo ur aut ho rized Aud i dea le r and have the
malfunction corrected.
An impro per ly closed fue l filler cap may also
ca use the MIL light to illuminate ¢
page 200 .
For more info rm ation c::> page 29 .
!?) Engine speed limitation
App lies to vehicles : wi th engine speed limitatio n
lfl Do not exceed max. engine speed of XXXX
rpm
The lfl symbo l illu min ates when the re is an en­
gine co ntro l ma lf u nct ion. The~ indica tor ligh t
in the instrument clus ter also illum ina tes . T he
engine spee d is limited to the s peed displayed in
the d river info rmation system. Keep in mind t hat
the engine speed w ill not exceed the value dis ­
played in the driver information system, for ex­
amp le w hen downshifting.
D rive to your authorized A udi dealer immediate ly
to have the mal function cor rected .
~~. Engine oil sensor
• Oil level! Sensor defective
If the symbol illuminates, contact your author ­
i zed Audi dealer and have the oil sensor inspect­
ed. Until yo u have this done, chec k the oi l level
each time you refuel just to be on the safe side
¢ page 207.
Bu Tank system
Ii] Please refuel
If the indicato r light turns on for the first time
and t he message appea rs, the re are about
2.1- 2.4 gallons (7 • 9 lite rs) of fuel left in the
ta nk. Time to refuel¢
page 200 .
Ii] Fuel tank system malfunct ion! Contact deal -
er ..,.

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Driver information
system
Introduction
The Driver information display inside the instru­
ment cluster provides you, the driver, with im­
portant information.
Fig. 7 Instrument cluster: ce nter display
Fig. 8 Wipe r lever: contro ls for the menu display
Center display
With the ignition on, the display in th e Driver In­
formation System shows the following informa­
tion :
- CD* inserted or Radio* station set
- Outs ide temperature*: At temperatures below
41 °f (+S
0
(), a snowflake symbol appears in
front of the temperature display¢ ,1,. .
- Warning if one of the doors, front lid or engine
compartment lid is not closed.
Additional functions
You can open the following functions in the Driv­
er Information System display by pressing the
I RESETI button¢ fig. 8 one or more t imes :
Digital speedometer*
Tire pressure monitoring*
¢pag e235
Driver in forma tion system
Trip computer* ¢page24
Efficiency program* ¢page26
Service interval display ¢page28
Speed warning ¢page Bl
Gearshift selector posit ions Au -i=>page 91
tomatic transm ission
Adaptive cruise control*
¢ page 98
Auto Check Control
Some functions and vehicle components are
scanned for their operating status when you
switch the ignition on and while you are driving. Malfunctions or required service procedures are
signaled audibly and indicated by red and yellow
illum inated symbols and reminders in the dis­
play.
A WARNING
--
- Never rely exclus ively on the outside tem­
pe rature display to determine if a road sur­
face is icy or not. Keep in m ind that road
surfaces, especially bridges and overpasses,
could be ice covered and slippery even at an
outside temperat ure above 41 °f (+S °C).
- Always remember, even if the "snowflake"
symbol (ice warning) does not appear in the
display, black ice could be on the road.
- Always reduce your speed and dr ive with
specia l care in cold weather conditions when
the chance of encountering icy road surfaces
increases.
(j) Tips
If the vehicle is stationary, or if you are driv­
ing at a very low speed, the temperature
shown in the disp lay might be slightly higher
than the actual outside temperature. This is
caused by the heat being radiated from the
engine.
23

Trailer mod e
Trailer mode
Driving with a trailer
General information
Your Audi was designed primarily for passenger
transportation.
If you plan to tow a trailer, please remember that
the additional load will affect durability, econo­
my and performance.
Trailer towing not only places more stress on the
vehicle, it also calls for more concentration from
the driver.
F or this reason, always follow the operating and
driving instructions provided and use common
sense.
Technical requirements
Tr aile r hitch
Use a weight-carrying hitch conforming to the
gross trailer weight. The hitch must be suitable
for your veh icle and trailer and must be mounted
securely on the vehicle's chassis at a technically
sound
location . Use only a trailer hitch with a re­
movable ball mount . Always check w ith the t rail­
er hitch man ufact urer to make su re that you are
using the co rrect hitch .
Do not use a bump er hit ch .
The hitch must be installed in such a way that it
does not interfere with the impact -absorbing
bumper system. No mod ificat ions should be
made to the vehicle exhaust and brake systems .
From t ime to t ime, check that a ll hitch mount ing
bolts rema in securely fastened.
When you are not tow ing a tra iler, remove the
tra iler hitch ba ll mount . This prevents the hitch
from caus ing damage shou ld your veh icle be
s truck from be hind ¢
,&..
Trailer brakes
If your trailer is equipped with a brak ing system,
check to be sure that it conforms to all regula­
tions .
190
The trailer hydraulic brake system must not be
directly connected to the vehicle's hydraulic
brake system ¢&. .
Safety chains
Always use safety chains between you r vehicle
and the trailer.
Trailer lights
Traile r lights must meet all regulations . Be sure
to check w ith your author ized Audi dealer for cor­
r ec t wiring , switches, and relays.
M irrors
If you are unable to see the traffic behind you us­
ing the regular outs ide mirrors, then you
must in­
stall extended mirrors . It is important that you
always have clear vision to the rear.
.&_ WARNING
- If a tra ile r has e lectr ica l brakes p lease no te
t hat these brakes are not activated by the
factory-fit ted contro l unit -risk of accident!
'
- After removing the trai ler hitch, do not
store it in your vehicle. In case of sudden
braking, the hitch co uld fly forward and in ­
jure you or yo ur passengers.
Operating instructions
Ma ximum traile r we ight
A trailer for your vehicle is limited to a typical
class 1 or class 2 trailer.
Trailer load distribution
Be sure the load in the trai ler is held securely in
place to p revent i t from shifting forward, back ­
ward or sideways.
Nev er allow a pa ssen ger to rid e in a trailer ¢ &.
in Driving instructions on page 191.
Engine cooling system
Towing a tra iler makes the engine work harder . It
i s important that the cooling system's perform ­
ance is up to the additional load. Make sure that
the cool ing system has enoug h fluid.