2011 AUDI A5 COUPE check engine light

& WARNING
• If your vehicle should break down for mechan ical or oth er
rea sons , park at a safe di stan ce fr om moving traffi c, turn off the
e ngine and turn on the hazard warning lights=>
page 62, "Emer­
gency flashers A".
• Never open the hood if you s ee or hear steam or coolant
esc aping from the engine compartment -you ri sk being scalded.
Wa it until you can no longer see or hear steam or coolant
escaping.
• The engine compartment of any vehicle is a dangerou s area .
Before you perform any work in the engine compartment, turn of
the engine and allow it to cool. Follow the warning sti ckers
=> page 267 , "Engine compartment ".
0 Note
Do not cont in ue dr iving if the J_ symbol ill uminates. There is a
ma lfunct io n in the engine coo ling system -yo u could damage your
engine .•
Engine oil pressure malfunction ~
The red e ngi ne oil pressure warni ng symbol requires
immediate servic e or repair. Driving with a low oil pres ­
sur e indication is likely to caus e severe engine damage.
If the ~ symbol on t he disp lay flashes , the engi ne oil pres­
s u re is too low . A dr iver message appears as we ll to explain
t h e ma lfun ction in mo re detail. The driver wa rning goes out
a fte r about 5 seco nds, but it can be brought up at any tim e by
press ing t he
[SET] but ton aga in .
Switch off engine ! Oil pressure too low
- Sto p the veh icle .
Controls and equip ­
ment Safety first
Driver information display
- Tu rn the engine off .
- Check t he eng ine oi l level=>
page 279 .
-Contact your authorized Aud i dea ler if necessa ry.
Engine oil level too low
If the eng ine oil leve l is too low, add e ngine oil=> page 2 79.
Engine oil level correct
If the symbo l~ flashes even though the engi ne oil level is cor rect,
please seek professional assistance. Do not continue driv ing. Do not
leave t he eng ine runn ing
idle, either .
[I) Tips
• The engine oil pres sure symbol ~ is not an indi cator 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.,.... requires oil refill or
workshop service without delay. Do not wait until the red oil pres­
s ure warning ~ starts to flash before you re spond to the low oil
level warning . By then, your engine may already have suffered
serious damage. •
Fill engine oil now~
~-Plea se replenish oil now
If the ~ .. symbo l lights up, then t he oil has to be replen is hed right
now =>
page 279. •
Vehicle care Technical data

When a yellow warning symbol appears, one warning tone sounds. A
driver message appea rs as well to expla in the ma lf u nction in more
detail. The driver warning goes out after about 5 second s, but it can
be brought up at any time by pressing the
! SETI button again.
Check t he function displayed as soon as possible . T he yellow symbol
wi ll not go out again until the reason for the malfunct ion has been
corrected.
I f several priority 2 malfunctions are present , the symbols appear in
succession and remain for about 2 seconds .
Dynamic steering*
=:> page37
Worn brake pads =>page 38
Battery voltage =>page39
IIDefective light bulb* =>page39
Check engine oil level => page 40 or
=> page40
Engine oil sensor malfunction =>page40
Low f uel level => page 39
I
-
Controls and equip ­
ment
jl Windshield washer fluid
level low
Convenience key*
Key not in vehicle
Light/rain sensor* defective
Dynamic headlight range
control defective
Safety first
=> page 39
=> page 38
=>page 38
=>page40
Dri ver information display
II Battery in remote control key =>page43
-
Electromechanical => page 118
parking brake
-Engine speed limitation* =>page40
adaptive light* defective =>page40
Ignition lock malfunction =>page40
Adaptive dampers* =>page40
"Windshield wiper defective => page 41
-
Significant loss of a ir pressure* => page 311
Tire pressure monitoring sys-=> page 311
tern * (malfunction)
W Tips
The speed warn ings warning threshold 1 and warn ing threshold 2
r are also yellow symbols in some models. The warning is a lways
shown as a small symbol in the upper area of the d isplay
=> page 30. •
App lies to ve hicle s: wit h Aud i d ri ve sele ct
Dynamic steering'"'
Dynamic ste ering: S ystem mal fu ncti on
This d river message and the symbol appear when a system
ma lfunction occurs dur ing travel. You can continue to drive ca refu lly
at a reduced speed to a qualified workshop. Steering can be more _,.
Vehicle care Technical data

Driver information display
difficult or sensitive than usual. The steering wheel can also be at an
angle when driving straight.
Dynamic steering: initialization
If this driver message appears and the indicator light is flashing on
the instrument panel, dynamic steering is being reinitialized. Once
you start the engine after this is finished, the steering wheel will be
easy to move. Re-initialization might be necessary if the steering
wheel was moved hard to the left and right while the vehicle was not
moving. The display goes out as soon as initialization is complete.
& WARNING
Have the dynamic steering system malfunction repaired as soon
as possible by an authorized Audi dealer or any qualified workshop
- risk of accident!
rn Tips
The dynamic steering stability systems are not available in the event
of a system malfunction. •
Applies to vehic les: with con ven ie nce ke y
Key not in vehicle
Key not in vehicle
This reminder appears along with the 7 symbol if the master key is
removed from the vehicle with the engine running. It is intended to
remind you (e.g. when chang ing drive rs) not to continue the journey
without the master key.
If the master key is no longer in the vehicle, you cannot switch off the
ignition after stopping the engine and you also cannot start the
engine again. You also cannot lock the vehicle from the outside. •
App lies to veh icles : with light/ra in senso r
Light/rain sensor defective )
...i-Automatic headlights/automatic wipers defective
If the symbol illuminates, the light sensor has failed . For safety
reasons the low beams are turned on permanently with the switch in
AUTO. However, you can continue to turn the lights on and off using
the light switch. In the case of a defect in the rain sensor, the wind­
shield wiper lever functions are still available. Have the light/ rain
sensor checked as soon as possible by an authorized Audi dea ler. •
Worn brake pads J
Brake pads!
If the warning light illum inates, immediately contact your authorized
Audi dealer or qualified workshop to have all brake pads inspected .
On USA models the warning light comes on together with the
warning light
BRAKE . Both sets of brake pads on an axle must always
be replaced at the same time.
& WARNING
Driving with bad brakes can cause a collision and serious personal
injury.
• If the warning light and the warning light
BRAKE1> with the
message Brake pads! comes on in the instrument cluster display,
immediately contact your authorized Audi dealer or qualified
workshop to have all brake pads checked or replaced if
necessary. •
l) BRAK£: USA mode ls only

App lies to veh icles : w ith d efecti ve ligh t bulb w arn in g
Defective light bulb warning t
The defective light bulb warning monitors the function of
the li ght bulbs in the vehicl e.
Th e defect ive light bulb warn ing monitors t he f unct ion of the l igh t
bulbs. If a defective light bu lb is detected, or if a light bu lb has
burned out, a ye llow symbol appears as well as a no tifica tion t hat
shows which light bulb is defective .
Defective bulb
If this symbol I lights up, a turn signal (front or rear), a headlamp, a
bra ke light, t he back -up light, a fog lamp or a re a r fog lamp h as
fa iled.
& WARNING
• Light bulbs are unde r pressure and can explode when bulbs a re
replaced -risk of injury .
• With gas-discharge lamp s* (xenon headlights ), the high­
voltage component mu st be handled appropriately. Doing other ­
wise poses a ri sk of death!
[ i ] Tips
Have an a uth orized A udi dea ler or other qualified workshop perform
t he rep lacement or the repa ir.•
Windshield washer fluid level too low -..>
Please refill washer flu id
If the symbol illuminates, add windshield washer fluid to the washer
system and a lso to the headlig ht washer system* =>
page 290. •
Controls and equip ­
ment Safety first
Driver information display
Fuel supply too low l
When the symbol
illuminates, this means there are about 2.1
gallons (8 liters) of fue l lef t in t he fuel t ank. T ime to refuel!
:::>page 270 .
If the symbol lig hts up, even when there is ample fue l in the tank, and
the text
TANK SYSTEM MALFUNCTION l CONTACT WORKSHOP
appears in the display , the re is a fault in the system. Contact a quali­
fied wo rkshop to have t he fault rectified. •
Applies to v ehicles : w ith batte ry volt age warni ng
Battery voltage
If battery powe r drops into the range w here it can limit the ability of
t he engine to s tart, th is the symbol -appears in t he instr ument
cluster display with the fo llowing d river message
battery charge low:
Indicates charging by being driven .
While this dr iver not ification is displayed, you have to be prepared for
limited sta rting capability .
Driver message appears and goes out aga in
If this dr ive r mess age appe ars af ter the igni tion is t urned on o r w hile
dr iv ing and it goes out again after a wh ile , the battery has been
adequ ate ly rech arged.
Driver message appears and does not go out again
If this dr iver not ificat ion appears a fter the igni tion is turned o n or
wh ile driving and does no t go out again, the battery 's state of cha rge
is no t in t he opt im al range . St art ing capability is restricte d. H ave t he
batte ry checked at an authorized Aud i dealer or other q ualified work ­
s hop as soon as poss ible. •
Vehicle care Technical data

Driver information display
Check engine oil .....
:... Add oil , max x qt (l). You may continue driv ing
I f t he • " sym bo l lights up displaying this dr ive r mess age, then ad d a
maximum of
l li te r at you r earliest opportunity=> page 279. •
Engine oil level ~:.
Please check oil level
W hen the symbol i lluminates, check the engine oi l level as soon as
poss ible =>
page 2 79. Top off the oil at yo ur earliest o ppor tunity
:::> page 279. •
Engine oil sensor defective ...
,. Oil level! Sensor defective
If th e sym bol ill uminates , con tact your au thor ized A udi d ealer and
have the o il senso r inspected . Until you have this done, check the oil
level e ach t ime you ref ue l just to be o n the s afe side =>
page 2 79. •
Applies to veh icles: w ith eng ine spee d limitation
Engine speed limitation .7
~ Do not e xceed ma x. eng ine speed of XXXX rpm
Th e /! symbo l illu minat es whe n there is an engine con trol malfunc­
tion . The ind icator light in the i nstr ument cluster also illuminates.
T he eng ine speed is limited to the speed disp layed in the driver infor­
mation system . Keep in mi nd that the e ngine s peed will not exceed
the va lue d isp layed in t he d rive r informat ion system, for example
w hen downshifti ng.
Please go to an authorized Audi dealer or other qualified workshop to
have the malfunc tion rep air ed. •
Headlight range control defective ( >
, Headlight range control defective !
If the sym bol i llumin ates, the dyn am ic he ad lig ht r ange contro l is
no longer working pro perly . Have the system checked and repaired at
your aut horize d Au di dea ler. •
Appli es to veh icles : with ada ptive light
Adaptive light defective .. U
adaptive Light defective
When this symbol.., illuminates, it means that adaptive light is
defe ctive. Go to an a uthor ized Audi de ale r t o have the hea dlight s o r
the contro l unit for the a dapt ive light repaired .•
Ignition lock malfunction
Ignition lock defective
If the symbo l i n the d ispl ay c omes on, t he re is a m alfu nction in the
elect ronic ignit ion lock . Please go to an a uth orized Audi dea ler or
o ther qu alifi ed workshop to h ave t he mal fun ction r epair ed. •
App lies to vehicle s: wit h Au di d rive s elect
Adaptive dampers
Adaptive dampers: system malfunction
If the symbo l in the display comes on, the re is a malfunction in the
adapt ive dampers . Please go to a n au thor ized A udi d eale r or ot her
qualifie d workshop to have t he malfunction repai red. •

Instrument lighting
The basic brightness of the illumination for the instru ­
ments, the center console and the display can be
adjusted.
- Press the knob to release it .
N ~ 0 0
i
"'
Fig. 52 Instrument
lighting
Rotating the knob to the right"+" will increase the basic
brightness when it is dark.
- Rotating the knob to the left"-" will decrease the basic
brightness when it is dark.
- Pressing the knob will prevent unintentional changes.
(I) Tips
The illumination for the instrument cluster lights up whenever you
switch on the ignition with the vehicle headlights off . As the daylight
fades, the instrument cluster illumination likewise dims automati­
cally and will go out completely when the outside light is very low .
This feature is meant to remind you to switch on the headlights when
outside light conditions become poor.•
Contro ls a nd e quip ­
m en t Vehicle
OP-eration
Clear vision
App lies to veh icles : wi th xenon h ead lights
Xenon headlights
After starting the engine, the xenon headlights are automatically
adjusted to the load and angle of the vehicle (for example, during
acceleration and braking) . This prevents oncoming traffic from expe­
riencing unnecessary headlight glare from your xenon headlights .
If the system is not operating properly, a warning symbol in the Auto­
Check Control is displayed~
page 40. •
Ap plies to vehicles : wit h adap tive light
Adaptive light
When driving around bends, the relevant area of the road
is better illuminated.
Fig. 53 Adaptive light
when driving
The benefit of adaptive light is that the curve and the edge of the road
are better illuminated ~ fig. 53. Dynamic adaptive light is controlled
automatically, depending on vehicle speed and steering wheel angle.
When driving around bends, the headlights are controlled according
to steering wheel angle . So that there is no black hole ahead of the
vehicle, the two main beams pivot at different angles. ..,_
Vehicle care Do-it-yourselt service iTechnical data

Intelligent technology
--------------------------------------------------' '----'----
pressing the=> page 236, fig. 198 button. When it is activated, the
message
ESP/ASR on appears briefly in the display.
Deactivating
You can deactivate the ASR if req uired by press ing the button (for less
than 3 seconds) =>
page 236, fig. 198. With the ASR deactivated, the
ESP check light comes on, see=>
page 15. The message ASR off
appears in the display as well. The ASR can be deactivated at any
speed.
The ASR should normally be activated all the time . Only in certain
exceptional situations when some slip is desirable does it make sense
to deactivate the ASR. Examp les:
• when driving with tire chains
• when driving in deep snow or on loose ground and
• when rocking the vehicle loose after it has become stuck .
When the abnormal situation is over, you sho uld activate the ASR
again.
& WARNING
The increased safety afforded by ASR does not mean that you can
take safety risks. Always adapt your driving style to the road
conditions and traffic situation.
(I) Tips
To ensure that the ASR works properly, all four whee ls must be fitted
with ident ical tir es . Any differences in rolling radius of the tir es can
cause the system to reduce eng ine power when this is not desired .
See also =>
page 303, "New tires and replacing tires and wheels".
Controls and equip­
ment Safety first Vehicle operation
Braking
General information
What
affects braking efficiency?
Operating conditions and driving habits
The brakes on today's automobiles are still subject to wear,
depending la rgely on ope rating conditions and driving habits=>& .
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 authorized
Audi dealer more often than specified in the
Warranty & Mainte ­
nance booklet.
Failure to have your b rake pads inspected can result
in reduced brake performance .
On steep slopes, you should use the braking effect of the engine. This
way, you prevent unnecessary wear on the brake system. If you must
use your brakes, do not hold the brakes down continuously. Pump the
brakes at intervals.
Noises may occur when b rak ing depending on the speed, braking
force and outside cond itions such as temperatu re and humid ity.
Moisture or road salt
If you are driving faster than 31 mph (50 km/h) and the windshield
wipers are on, the brake pads will briefly touch the brake discs in
regula r interva ls so as to improve reaction time when braking on wet
surfaces. You, the driver, will not not ice anything.
Under certain condit ions, for example, when driving through water or
very heavy rai n, or even after washing your vehicle, the braking effect
can be reduced due to moisture (o r in free zing conditions ice) on the
bra ke pads. A few careful brake applications should dry off the brake
pads or remove any ice coatings.
Th e effectiveness of the brakes can be reduced when the vehicle is
dr iven on a salt-covered road and the brakes are not used. H ere too,
you should clean off accumu lated salt coating from brake discs and
pads with a few careful applications of the brake=>&,.
Vehicle care Do-it-yourself service Technical data

Driving and environment
------------------------------------------------'
depending upon vehicle load and speed, road and weather conditions,
trip length, etc. •
Drive smoothly and keep a lookout ahead
Vehicles use the most fuel when they are accelerating .
-Avoid unnecessary accelerating and braking.
Vehicles use the most fuel when they are accelerating. If you antici­
pate 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 consumption, engine wear, and does
not disturb the environment .
Fuel consumption, exhaust emissions and eng ine 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 condi­
tions permit. •
Reducin~ unnecessary idling
Even when your car is just idling it burns up fuel.
-Shut the engine off when you are not driving the vehic le .
- Do not warm up the vehicle by letting the engine run at
idle.
Controls and equip­ ment Safety first Vehicle operation It makes sense to shut off the engine in traffic jams, when waiting for
trains to pass at railroad 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 t ime for the engine to warm up fully when it is running
at idle. However, wear and noxious emissions are especia lly high
when the eng ine is warming up. So you should dr ive away as soon as
you start the engine and avoid running at high rpms while the engine
is still warming up.
0 Note
Do not leave engine idling unattended after starting . If warning
lights should come on to indicate improper operation, they would go
unheeded. Extended idling also produces heat, which could result in
overheat ing or other damage to the vehicle or other property. •
Regular maintenance
A badly tuned engine unnecessarily wastes a lot of fuel .
- Have your vehic le serviced at regular intervals .
By having your vehicle regularly serviced by an authorized Audi dealer
helps to ensure that it runs properly and economically . The condit ion
of your vehicle not on ly affects its safety and ability to hold its val ue,
it also affects fuel consumption.
Check your oil each time you fill your tank.
Th e 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.
You must dr ive your veh icle about 3,000 miles (5,000 kilometers)
before you can properly assess oi l consumption .
Thi s also applies to fuel consumption and eng ine output.
Vehicle care Do-it-yourself service Technical data