2012 AUDI A5 COUPE check engine light

(D Tips
The symbol's appearance might be differ­ent in some models .
Yellow symbols
A yellow symbol means WARNING.
Fig. 27 Display: Yellow warning symbo l
Yellow symbols indicate a priority 2 malfunc­
tion -Warning!
When a yellow warning symbol appears,
one
warning tone sounds. A driver message ap­
pears as well to explain the malfunction in
more deta il. The driver warning goes out after
about 5 seconds, but it can be brought up at
any time by pressing the
! SET I button aga in.
Check the funct ion displayed as soon as possi­
ble. The yellow symbol will not go out again
until the reason for the malfunction has been
corrected.
If several priority 2 malfunctions are present ,
the symbols appear in succession and remain
for about 2 seconds .
~~
Dynamic steering*
¢page34
•
Worn brake pads
¢page34
•
Battery voltage
¢page35
I:~
Defective light bulb*
¢page35
•
Check engine oil level
¢
page 36 or¢ page 36
Dri ver inform ation di spl ay 33
•
Engine oil sensor malfunction
¢page36
II
low fuel level
¢ page 35
•
Windshield washer fluid level
low
¢page35
e
Convenience key* Key not in vehicle
¢ page 34
m
light/rain sensor* defective
¢page34
II
Dynamic headl ight range control
defective
¢ page 36
m
Battery in remote control key
¢page38
rm
Electromechanical pa rking brake
¢ page 99
•
Engine speed limitation*
¢page36
r1i
adaptive light* defective
¢page 36
-
m
Ignition lock malfunction
¢page36
B
Adaptive dampers*
¢page36
m
Windshield wiper defective
¢page36
[ti
Significant loss of air pressure*
¢page 271
Tire pressure monitoring system*
11111 (malfunction)
¢page 271
rm
Automatic transmiss ion
malfunction
¢page 131

34 Driver in formation d isplay
The speed warnings warning threshold 1
[i and warning threshold 2 HIil are also
yellow symbols in some models. The warn­
ing is always shown as a small symbol in
the upper area of the display
c> page 27 .
~ Dynamic steering
App lies to vehicles: with Audi drive select
&1rJ D ynamic steering: Sy ste m m alfun ctio n
This driver message and the &1r-1 symbol ap­
pear when a system malfunction occurs dur­
ing travel. You can continue to dr ive carefully
at a reduced speed to a qualified workshop .
Steer ing ca n be mo re d iff icult or sensitive
tha n usual. The stee ring wheel can also be at
an angle when dr iv ing str aight.
&1rJ Dynamic steering: initial ization
If th is driver message appears and the &1rJ in­
d icator light is flash ing on the instrument
panel, dynam ic steering is being re initialized .
Once you sta rt the eng ine after this is f inish­
ed, the steering wheel will be easy to move.
Re-initialization might be necessary if the
steer ing whee l was moved ha rd to t he left and
right whi le the vehicle was not moving . The
d isplay goes out as soon as initia lization is
comp lete.
A WARNING
-
Have the dynamic steering system mal­
function repaired as soon as poss ible by an
authorized Audi dealer or any qualified
workshop -risk of accident!
(D Tips
The dynam ic steering stability systems are
not ava ilable in the event of a system mal­
function .
2e Key not in vehicle
Applies to vehicles : wit h co nvenience key
I! Key no t in vehicl e
This rem inder appears along with the I! sym­
bol if the master key is removed from the ve­
hicle with the eng ine runn ing .
It is intended
to rem ind you (e.g . whe n cha nging dr ivers)
not to cont inue t he journey withou t the m as­
te r k ey.
If the master key is no longer in the ve hicle,
you cannot swi tch off the ig nit ion after stop­
ping the engine and you also canno t start the
engine aga in. Yo u also cannot lock the vehicle
from the outside .
· fi.. D Light/rain sensor defective
Appl ies to vehicles: wit h ligh t/rain sensor
B Automatic headlights /automati c wipers
defective
If the symbol illumina tes, the ligh t sensor has
failed. For safety reasons the low beams are
turned on permanently with t he switch in AU­
TO . However, yo u can cont inue to turn the
lights on and off using the light switch. In the
case of a defect i n the rain sensor, the wind­
shield wipe r lever functions are still ava ilab le.
Have the light/ rain senso r checked as soon as
poss ible by an authori zed Audi dealer.
(0) Worn brake pads
EiJ Brake pad s!
If the warning light illuminates, immed iately
co ntact your authorized Audi dea ler or qua li­
fied workshop to have all brake pads i nspect­
ed. On USA mode ls t he
EiJ w arni ng lig ht
comes on together with the - warning
light . Both sets of brake pads on an ax le must
always be replaced at the same time.
A WARNING
'-
Driving w ith bad brakes can cause a colli-
sion and ser ious personal injury.

36 Driver in formation d isplay
'l:"::71 , Check engine oil
II Add o il, ma x x qt (l). You may c ontinu e
drivin g
If the ll!I symbol lights up d isplay ing th is
driver message, then add a maximum of
I li­
ter at you r earliest oppo rtunity
c:> page 242.
'l:":?J. Engine oil level
II Please c heck oil l evel
When the symbol illuminates, check the en­
g ine oil level as soo n as poss ible
c:> page 242.
Top off the oil at yo ur earliest oppo rtunity
c:> page 2 42.
'IY ..,. Engine oil sensor defective
II Oil le vel! Sen sor defecti ve
If the symbol illum inates, contact your au­
thor ized Audi dealer and have the o il sensor
inspected . Until you have th is done, check the
oil leve l each time you refuel just to be on the
safe side
¢ page 242.
! ?) Engine speed limitation
Applies to vehicles : with engine speed limi tation
IP,I Do not e xceed ma x. engine spee d of XXXX
rpm
The II! symbo l illuminates when there is an
engine contro l malfunction. The
(m indicator
light in the instrument cluster also illumi­
nates. The engine speed is limited to the
speed displayed in the driver information sys­
tem . Keep in mind that the eng ine speed will
not exceed the va lue disp layed in the driver in­
formation system, fo r example when down­
shifting.
Please go to an authorized Aud i dealer or oth­
er qualified workshop to have the ma lfunction
repaired.
~(D Headlight range control defective
II Headlight range control d efe cti ve !
If the fl symbo l ill uminates , the dynamic
headlight range contro l is no longer working
properly . Have the system checked and re­
paired at your authori zed Audi dealer.
§0 Adaptive light defective
Applies to vehicles: with adaptive light
l/ll adapt ive Light defecti ve
When the l/ll symbol illuminates, it means
that adaptive light is defective. Go to an au­
thorized Audi dealer to have the headlights or
the control un it for the adaptive light re­
paired .
~ Ignition lock malfunction
I!! Ignition lock def ectiv e
If the I!! symbol in the display comes on,
there is a malfunction in the e lectronic igni­
tion lock . Please go to an author ized Audi
dealer or other qualified workshop to have the
malfu nction repa ired.
Q Adaptive dampers
Applies to vehicles: with Audi drive select
E Adapti ve damper s: syste m malfunc tion
If the E symbol in the d isplay comes on, there
is a ma lfunction in the adaptive dampers.
Please go to an authori zed A udi dealer or oth­
er qualified workshop to have the mal funct ion
repaired .
~ Windshield wipers faulty
ti Windscreen wipe r defective!
When the fw,j symbol illum inates, it means
that the elect ronics for the winds hield wipers
are defective . Please go to an authorized A udi
dealer or qualified workshop to have the
windshield wiper system repaired.

206 Intelligent technology
Driving off
When driving off, a lways be sure to keep road
conditions in mind as you accelerate. If one
drive wheel spins because it is on a surface
with less grip, apply
plenty of throttle until
the car starts to
move .
Overheating of brakes
To prevent the disc b rake o f the bra ked wheel
from overheating if subjected to excessive l oads on this whee l, the EDL cuts out tempo­
rarily. The vehicle remains operational and be­
haves in the same way as a vehicle without
EDL.
As soon as the brake has coo led down, EDL
switches on again automatically .
A WARNING
-When accelerating on slippery surfaces,
such as on ice or snow, always be careful
when depressing the accelerator pedal. Even with the EDL working, the drive
wheels can spin and reduce your ability
to control your car. Risk of crash!
- The increased safety afforded by EDL
does not mean that you can take safety
risks. Always adapt your dr iving style to
the road conditions and traffic situation.
0) Tips
If a fault occurs in the ABS, the EDL is also
not funct ion ing. Thi s is indicated by the
ABS war ning light ¢
page 16.
Anti-Slip Regulation System (ASR)
The Anti-Slip Regulation System prevents the
driven wheels from spinning when the car is
accelerating.
General notes
The Anti -Slip Regulation System (ASR) is inte­
grated in the electronic stabilization program
( E SP). When the vehicle starts up and acceler­
ates, the wheels are p revented from spinning
by adjusting the engine power to match the amount of grip available
from the road sur­
face.
How the system works
ASR performs automat ically, i .e. w ithout the
driver's intervention. With the aid of the ABS
sensors ¢
page 208, ASR monitors the speed
of the driven whee ls. If the whee ls start to
spin, engine torque is reduced automatica lly
until the tires find enough grip to lock onto
the road surface. The system is active across
the entire speed range.
The ASR works in conjunction with the ABS . If
a malfunction should occur in the ABS, the
ASR will also be out of act ion.
Activating
T he ESP is automatica lly activated when the
engine is started and it performs a se lf-test .
You can activate a deactivated ASR if required by pressing the
¢ page 204, fig. 196 button.
When it is act ivated, the message
ESP/ASR
on
appears briefly in the display .
Deactivating
You can deactivate the ASR if required by
pressing the button (for less than 3 seconds)
¢
page 204, fig . 196. With the ASR deactivat­
ed, the ESP check light comes on, see
¢
page 15 . The message ASR off appears in
the d isplay as well. The ASR can be deact ivat­
ed at any speed.
The ASR s hould normally be activated all the
time . Only in certain exceptional situations
when some slip is desirable does it make
sense to deact ivate the ASR . Examples :
- when driving with tire cha ins
- 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
shou ld activate the ASR again .

This automatic adjustment process will cause
a
slight vib ra tion of the brake pedal and some
noises to alert you that vehicle speed must be
adapted to existing road and traffic condi­
tions.
A WARNING
Although the ABS is very effective, always
remember that braking capability is limit­
ed by t ire traction . A lways adjust your dr iv­
ing speed according to the road and t raff ic
conditions. Do not let the extra sa fety af­
forded by the ABS tempt you into taking
extra risks. The ABS cannot overcome the
laws of physics .
(D Tips
-If ABS is not functioning properly, a
warning light will come on . See
~ page 16.
-If a fault occu rs in the ABS, the EDL is al­
so not functioning . This is indicated by
the ABS warning light .
Brake assist
Brake assist is designed to achieve the opti­
mum broking effect.
Brake assist helps to increase the effective
brak ing power and thus to achieve a shorter
stopping distance. If the driver presses the
brake peda l very quick ly, brake assist auto­
mat ica lly boosts the braking force to the max­
imum level, up to the point where the anti­
lock brake function (ABS) intervenes to stop
the wheels from locking . You should then
keep the brake pedal pressed u ntil the vehicle
has braked to the required speed . Brake ass ist
sw itches itself off as soon as you release the
b rake peda l.
A WARNING
Please remembe r that the accident r is k al­
ways increases if yo u drive too fast, espe ­
cially in corners or on a s lippery road, or if
you fo llow the vehicle ahead of you too
close ly. Increased risk of an accident can-
Int ellig ent technolog y 209
not be compensated for even by brake as­
sist, so always maintain a safe speed.
S .
®
ervotron1c
-
advanced power
steering system
The power steering systems uses the power of
the running engine to allow precise steering
with little effort.
T he advanced Servotronic ® power steer ing
system senses the road speed and elect ron i­
ca lly adjusts power assistance to provide com­
fortab le and safe ste ering response exact ly
matched to the vehicle speed .
Power steering will not work i f the engine is
off. As a result, the stee ring wheel will be hard
to turn .
T he power steering fluid level is checked d ur­
ing the schedu led maintenance services .
(D Note
If there is an e lectronic malfunction, ser ­
votronic
will s till function like a conven­
tiona l power steering system, providing a
constant steering support force that is no
l onger proportionate to the vehicle speed.
This is most noticeable when turning the
steering wheel at low speeds (for example
when parking), -more effort w ill be re­
q uired than usual.
- Be aware of the different than usual
steering response and adjust your steer ­
ing force acco rdingly .
- Have the problem checked and set right
by an Audi dealer as soon as possible.
(D Tips
-Whe n the engine is running, never hold
the steering w heel turned all the way to
the rig ht or to the left for longer t han 15
seconds. The powe r steering pump will
overheat the hydraulic fluid if you keep
holding the stee ring wheel turned all the
way. This is likely to damage the power
steering system .
IJI>
•
•

212 Intelligent technology
If starting capability is jeopardized due to en­
ergy consumption, the following warning ap­
pears in the MMI display:
Please start engine, otherwise system will
switch off in 3 minutes.
The warning ind icates that the system will be
turned off automatically after 3 minutes. If
you wish to continue using the functions, you
have to start the engine .
With the engine running
Although electrical energy is generated when
the vehicle is be ing driven, the battery can be­
come discharged . Thi s happens mostly when
little ene rgy is being generated and a great
deal consumed and the battery's state o f
charge is not optima l.
To bring the energy balance back into equili­
brium, consumers which require especially
l arge amounts of energy are temporarily cut
back or switched off. Heating systems in par­
ticular require a great dea l of energy. If you
notice, for example, that the heated seats* or
the heated rear window are not heating, they
have been temporar ily cut back or switched
off. These systems will be ava ilable again as
soon as the energy balance has been restored.
You will also notice that engine idle speed has
been increased slightly. This is normal and not
a cause for concern . By increas ing engine idle
speed the add itiona l energy required is gener­
ated and the battery is charged.
Driver notification in the instrument
cluster display
If battery power drops into the range where it
can limit the ability of the engine to start, this is shown in the instrument cluster display
with the following driver message:
(•i Low battery charge : battery will be
charged while driving
This notif ication reminds you that the starting
capability of the engine may be limited. As
soon as you start driving again, the battery will
be recharged and the notification will go
out.
Driver notification appears and goes out
again
If this driver notification appears after the ig ­
nition is turned on or whi le driving and it goes
out again after a while, the battery has been
adequately recharged.
Driver notification appears and does not
go out again
If this driver notification appears after the ig­
nition is turned on or whi le driving and does
not go out again, the battery's state of charge
is not in the optimal range. Starting ability is
restricted . Have the battery checked as soon
as possible by an authorized Aud i dea ler or
qualified wo rkshop.

216 Driving and environment
Reducing unnecessary idling
Even when your car is just idling it burns up
fuel.
.,. Shut the engine off when you are not driv­
ing the vehicle.
.,. Do not warm up the vehicle by letting the
engine run at idle .
It makes sense to shut off the engine in traffic
jams, when waiting for trains to pass at rail ­
road crossings, or at traff ic lights that have
l ong wa its on red. Turning the engine off for
just 30-40 seconds saves more fue l than is
burned starting the eng ine again .
It takes a long time for the engine to warm up
fully when it is running at idle. However , wear
and noxious emissions are especially high
when the engine is warming up. So you should
drive away as soon as you start the engine and
avoid running at high rpms while the engine is
still warming up .
(D Note
Do not leave engine idling unattended af­
ter starting . If warning lights should come
on to indicate improper operation, they
wou ld go unheeded. Extended idling also
produces heat, which cou ld result in over­
heating or other damage to the vehicle or
other property .
Regular maintenance
A badly tuned engine unnecessarily wastes a
lot of fuel .
... Have your vehicle serviced at regular inter-
vals.
By having your vehicle regularly serviced by an
authorized Audi dealer helps to ensure that it runs properly and economically . The condition
of your vehicle not only affects its safety and
ability to hold its value, it also affects
fuel
consumption .
Check your oil each time you fill your tank.
The amount of oi l used is re lated to engine
load and speed.
It is normal for the oil consumption of a new
engine to reach its lowest value after a certa in
mileage has been driven.
You must drive your veh icle about 3,000 m iles
(5,000 kilometers) before you can properly
assess oil consumpt ion.
This also app lies to fue l consumption and en­
gine output.
(D Note
- Have your veh icle ma inta ined properly
and in accordance with the service rec­
ommendations in your Warranty
& Main­
tenance booklet . Lack of proper mainte­
nance as well as improper use of the ve­
hicle will impair the function of the
emission contro l system and cou ld lead
to damage.
- Do not alter or remove any component of
the Emission Control System unless ap­
proved by the manufacturer.
- Do not alter or remove any device, such
as heat shields, switches, ignition wires,
valves, which are designed to protect
your vehicle's Emission Control System and other important vehicle compo­
nents.
Fewer short trips
Fuel consumption will always be relatively
high on short trips .
.,. Try to avoid driv ing short distances with a
cold engine .
The engine and cata lytic converter have to
reach their optimal
operating temperature to
reduce fuel consumpt ion and noxious emis­
s ions effectively .
Just after starting, a co ld engine in a mid-size
car only achieves a fuel economy of 6-8 mi les
per gallon (30-40 l/100 km). After about a
half a mile, fuel economy cl imbs to 12 mpg
(20 l/100 km) . After about
2 .5 miles (4 km), ll>

218 Trailer towing
Trailer towing
Driving with a trailer
General information
Your Audi was designed primarily for passen­
ger transportation .
If you plan to tow a trailer, p lease remember
that the additional load will affect durability,
economy and performance .
Trailer towing not on ly places more stress on
the vehicle, it also calls for more concentra­
tion from the driver.
For this reason, always fo llow the operating
and driving instructions provided and use
common sense.
Technical requirements
Trailer hitch Use a weight-carrying hitch conforming to the
gross trailer weight. The hitch must be suita­
ble for your vehicle and trailer and must be
mounted securely on the veh icle's chassis at a
technically sound location. Use only a trailer
hitch with a removable ball mount. Always
check with the trailer hitch manufacturer to
make sure that you are using the correct
hitch.
Do not use a bumper hitch.
The hitch must be installed in such a way that
it does not interfere with the impact-absorb­
ing bumper system . No modifications should
be made to the vehicle exhaust and brake sys­
tems . From time to time, check that all hitch
mounting bolts remain securely fastened.
When you are not towing a trailer, remove the
trailer hitch ball mount. This prevents the
hitch from causing damage should your vehi­
cle be struck from behind
¢ A.
Trailer brakes
If your trailer is equipped with a braking sys­
tem, check to be sure that it conforms to all
regulations . The trailer
hydraulic brake system must not be
direct ly connected to the vehicle's hydraulic
brake system
~ A.
Safety chains
Always use safety chains between your vehicle
and the trai le r.
Trailer lights
T railer lights must meet all regulations. Be
sure to check w ith your authorized Audi dealer
for correct wiring, switches, and relays.
Mirrors
If you are unable to see the traffic behind you
using the regular outside mirrors, then you
must install extended mirrors . It is important
that you
always have clear vis ion to the rear.
,8. WARNING
- If a trailer has electrical brakes please
note that these brakes are not activated
by the factory-fitted control unit -risk of
accident!
- Afte r removing the trailer hitch, do not
store it in your vehicle. In case of sudden
braking, the hitch could fly forward and
injure you or your passengers.
Operating instructions
Maximum trailer weight
-
A trailer for your vehicle is limited to a typical
class 1 or class 2 tra iler.
Trailer load distribution Be sure the load in the trailer is held secure ly
in place to prevent it from shifting forward,
backward or sideways.
Never allow a passenger to ride in a trailer
¢ A in Driving instructions on page 219.
Engine cooling system
T owing a trailer makes the engine work hard ­
er. It is important that the cooling system's
performance is up to the additional load.
Make sure that the cooling system has enough
fluid . .,..