2015 AUDI A5 check engine

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• Pull the switch briefly to the se con d s top to au­
tomatica lly close the window.
A WARNING
-When you leave your veh icle -even if only
br iefly -always remove the ignition key. This
applies part icularly when children remain in
the vehicle. Otherwise the children could start the engine o r operate electr ical equip­
ment (e.g. power w indows). The power win­
dows are functional until the d river's door o r
passenger's door has been opened.
- Pay close attention when closing the w in­
dows to prevent pinch ing of hands or limbs.
- When loc king the veh icle from outs ide, the
vehicle must be unoccupied since t he win­
dows can no longer be opened in an emer­
gency.
@ Tips
- When you open the doors, the windows au­
tomatically lower about 10 mm.
- After the ignition has been switched off, the
windows can st ill be opened or closed for
abo ut 10 m inutes. The window regulato rs
are not switched until the driver's or pas­
senger's door is opened .
Convenience opening/closing
The windows and the panoramic tilting sunroof
can be opened and closed with the mechanical
key or the emergency key.
Fig. 3 1 Key tu rns fo r opening a nd clos ing
Con venience open ing fea ture
• Use the emergency key or pull the mechanical
key out of the master key
Q page 33 .
-
Opening and cl osing
• Insert the key into the lock of the driver's doo r.
• Turn the key to position
Q fig. 31 @ unti l all
the windows have reached the des ired pos ition
and the panoramic tilting sunroof is tilted.
Convenienc e clo sing featur e
• Use the emergency key or pull the mechanical
key out of the master key
Q page 33 .
• Turn the key in the lock of the d river's door to
the lock position @ unti l the windows and the
panoramic tilting sunroof are closed
Q ,A.
When the panoramic tilting sunroof is tilted/
closed, the electric sun shade* is also opened/
closed.
A WARNING
-- Never close the w indows and the panoram ic
tilt ing sunroof inattentively and without
checking - there is risk of injury.
- You must always watch when the windows
are be ing raised so that no one can be trap­
ped. If you release the key, the closing ac­
tion is immed iate ly canceled.
- Always read and heed WARNING
Q .&. in
General description on page 31.
Correcting window regulator malfunction
After disconnecting the vehicle battery , the one­
touch up and down feature must be activated
again.
• Pull and hold the power window switch until
the window is completely closed.
• Release the sw itch and pull the sw itch again for
one second .
39

Driving
Driving
Steering
Manually adjustable steering wheel
The steering wheel position is fully adjustable up
and down and forward and back .
Fig. 76 Lever under the steering column
Firs t, adjust the driver 's seat cor rectly .
• Pull the lever ¢
fig. 76 ¢ .&_.
• Move the steer ing whee l to the desired posi­
t ion.
• Push the lever agains t the steering col umn un-
ti l it locks.
There must be at least 10 inches (25 cm) be­
tween your chest and the cente r of the steering
wheel.
If you ca nnot sit mo re than 10 i nch es (25
cm) from the steering wheel, see if adaptive
eq uipment is available to help you reach the ped­
als and increase the distance from the steering
wheel.
For detai led information on how to adjust the
driver's seat, see
¢ page 55.
A WARNING
Improper use of steering wheel adjustment
and improper seating position can cause seri­
ous pe rsonal injury .
- Adjust the steering wheel column on ly when
the vehicle is not moving t o prevent loss of
vehicle control.
- Adjust the driver's seat or steering wheel so
that there is a minim um of 10 inches (25
cm) between your chest and the steering
wheel
¢page 113, fig. 1 19 . If you cannot
72
maintain t his minimum distance, the airbag
system cannot p rotect you properly.
- If physical limitations prevent you from sit­
ting 10 inches (25 cm) or more from the
steer ing whee l, check with your authorized
Audi dea ler to see if adaptive equipment is
availab le.
- If the steer ing whee l is aligned with your
face, the supplementa l driver 's a irbag can­
not prov ide as much p rotection in a n acci­
dent. Always make su re that the steering
wheel is alig ned with your chest.
- Always hold the steer ing wheel w ith your
hands at the 9 o'clock and 3 o'clock posi­
tions to reduce the ris k of persona l injury if
the dr iver's air bag dep loys.
- N ever hold the stee ring wheel at the 12
o'cloc k position o r with your hand s inside
the steering wheel rim or on t he steering
wheel hub . Holding the steeri ng whee l the
wrong way can cause serious injuries to the
hands, arms and head if the driver's airbag
deploys.
Ignition lock
Starting engine with the key
App lies to vehicles : wi th ignition lock
The ignition is switched on and the engine start ­
ed with the ignition key .
Fig . 7 7 Ign iti on key
Starting the engine
• Insert the key into the ignition lock .
• Manual transmission: Fully depress the clutch
pedal an d move the shift lever to the neutral
position . ..,.

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~ Wait briefly until the transmission has shifted (you will feel a slight movement) .
~ Remove your foot from the brake pedal and ac­
celerate.
Stopp ing tempo raril y
~ Keep the vehicle stationary using the b raking
pedal, for examp le at traffic lights.
~ Do not press the accelerator pedal when doing
this .
~ To prevent the vehicle from rolling when you
start driving , se t the parking brake when stop­
ping on steep inclines¢&,. .
~ The parking brake will release automatically
and the vehicle will start moving once you press
the accelerator pedal.
Stopp ing /p ar kin g
If the selector lever is not in the P position when
you open the driver 's door, the veh icle could roll.
The message
Tr ansmi ssion : Car m ay roll ! Shift
t o park!
appears .
~ Press and hold the brake pedal until the vehicle
has come to a complete stop .
~ Apply the parking brake¢ page 78, Parking.
~ Select the P selector lever pos ition ¢ .&_.
Stopp ing on an incline
~ Always press the brake pedal to hold the vehi­
cle in place and prevent it from "rolling back"
¢ &,. . Do
not try to prevent the vehicle from
"rolling back" when a gear is engaged by in­
creasing the engine speed ¢0 .
Startin g on an incline
~ Activate the parking br ake.
~ With the driving gear selected, press the accel­
erator pedal carefully . The parking brake will re­
lease automat ically if you r seat belt is fastened.
Under certain circumstances, such as driv ing in
the mountains, it may be useful to switch tempo ­
rarily to the manual shift program in orde r to ad­
just the gears to the d riving conditions by hand
¢ page 86.
On slopes, activate the parking brake first and
then move the selector lever to the P posit ion.
Aut omatic transm issio n
This prevents too much stress from being placed
on the locking mechanism .
A WARNING ,-
-The vehicle can also roll when the engine is
stopped.
- Unintended vehicle movement can cause se­
rio us injury.
- Never leave your vehicle with the engine
running while in gear . If you must leave your
veh icle when the engine is running, activate
the park ing brake and move the selector lev­
er to P .
- Power is still transmitted to the wheels
when the engine is runn ing at idle . To pre­
vent the vehicle from "creep ing", you must
keep your foot on the brake when the eng ine
is running and the se lector lever is in D/S or
R or "tiptronic" mode is selected.
- Do not press the accelerator pedal when
changing the se lector lever position while
the vehicle is stationary and the eng ine is
r u nning .
- Never sh ift into R or P while driving ,
- Before driving down a steep s lope, reduce
your speed and sh ift into a lower gear with
" t ipt ronic ".
- Do not ride the brakes or press the brake pedal too ofte n or too long whe n driving
down a hi ll. Constant brak ing causes the
b rakes to overhea t and substantially re­
duces braking performance, increases brak­ ing distance or causes comp lete fai lure of
the brake system.
- To prevent the vehicle from ro lling back
when stopping on inclines, always ho ld it in
p lace with the brake pedal or parking brake.
- Never hold the vehicle on an incline with a
slipping clutch. The clutch opens automati­
cally when it becomes too hot from the
overload. An ind icator lamp@] illuminates
and a driver message appears¢
page 87
when the clutch is overloaded .
-If the engine must remain running, never
have any dr iving posit ion engaged when
checking under the hood . Make sure these­
lecto r lever has secu rely engaged and is
locked in P with the parking brake set
85

Smart Technology
The following situations are exceptions where it
may be usefu l to switch on sport mode to allow
the wheels to spin : -
Rocking the vehicle to free it when it is stuck
- Driv ing in deep snow or on loose ground
- Dr iv ing with snow chains
Sport mode on ESC/ASR off Sport mode off or
ESC /ASRon
Behavior
The ESC and ASR stabiliza- The stabilization funct ion is The full stabilization func-
tion fu nct ions are limited not
available¢ ,&.. ESC and
tion of the ESC and ASR is
¢ ,&. .
ASR are switched
off. available again.
Operation Press the I!> OF F! button Press and hold the I!> OF FI Press the I!> OF F! button
briefly . button longer than 3 sec-again.
onds .
Indicator II turns on. JI and lf'lii•li~ turn on. II turns off or II and
lights lf'lii•l~~ turn off.
Driver mes- Stabilization control (ESC): Stabilization control (ESC): Stabilization control
sages Sport. Warning! Re stricted off. Warning! Restricted (ESC):
On
stability stability
It is only possible to turn off the ASR up to 30
mph (SO km/h) for veh icles wi th front whee l
drive . At about
45 mph (70 km/h) it automatica l­
ly turns on again. It is possible to turn
off the
ASR at any speed for vehicles with all whee l
drive.
A WARNING
-
You should only sw itch sport mode on or
switch ESC/ASR
off if your driving ab ilities and
road condit io ns perm it .
- The stabilization function is limited when
sport mode is switched on. The dr iv ing
wheels could spin and the veh icle cou ld
swerve, especially on slick or slippery road
surfaces.
- There is no vehicle stabilization when ESC/
ASR are switched
off.
(D Tips
ESC/ASR cannot be switched off or sport
mode cannot be switched on when cruise con­
trol or adaptive cru ise control* is sw itched on .
172
Braking
What affects broking efficiency?
New brake pads
During the first 250 miles (400 km), new brake
pads do not possess their full braking effect, they
have to be "broken in" first¢,&. . You can com­
pensate for this slightly reduced braking power
by pushing harder on the brake pedal. Avoid
heavy braking loads during the break-in period.
Operating conditions and driving habits
The brakes on today's automobiles are still sub­
ject to wear, depending largely on operating con­
ditions and driving habits~,&. . On vehicles that
are either driven most ly in stop-and -go city traf­
fic or are driven hard, the brake pads should be
checked by your authorized Audi dealer more of­
ten than specified in the
Warranty & Mainte­
nance booklet .
Failure to have your brake pads
i nspected can result in reduced brake perform­
ance .
On steep slopes, you should use the braking ef­
fect of the engine . This way, you prevent unnec­
essary wear on the brake system. If you must use
your brakes, do not hold the brakes down contin­
uously. Pump the brakes at intervals.

Operating noise
Noises may occur when braking depending on the
speed, braking force and outside conditions such
as temperature and humidity.
Effect of water and road salt
In certain situat ions, for example after driving
through water, in heavy ra in, after overn ight con­
densat ion or after washing your car, the braking
effect can be reduced by moisture or ice on the
brake rotors and brake pads. The brakes must be
dried first with a few carefu l brake applications.
At higher speeds and with the w indshie ld w ipers
turned on, the brake pads press against the brake
rotors for a short amount of time. This occurs at
regular intervals without the driver noticing and
provides for better brake response time under
wet conditions.
The effectiveness of the brakes can be reduced
when the vehicle is driven on a salt-covered road
and the brakes are not used. Likewise, you clean
off accumulated salt coating from brake discs
and pads with a few cautious applications of the
brake ¢.& .
Corrosion
There may be a tendency for dirt to build up on
the brake pads and corros ion to form on the discs
if the car is not driven regularly or only for short
tr ips with little use of the brakes.
If the brakes are not used frequently, or if corro­
sion has formed on the discs, it is advisab le to
clean off the pads and discs by braking firmly a
few t imes from a moderately high speed¢.&.
Faults in the brake system
If you should notice a sudden increase in brake
pedal trave l, then one of the two brake circuits
may have failed
c:> .& .
Low brake fluid level
Malfunctions can occur in the brake system if the
brake fluid level is too low. The brake fluid leve l is
~ monitored e lectronically.
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Smart Technology
Brake booster
T he brake booster increases the pressure that you
generate w ith the brake pedal.
It works on ly
when the engine is running
.c:> .&
Brake lining wear status
Brake lining wear may be checked by visual in­
spect ion of the condition of the brake pads
through the openings in the wheel. If necessary,
the wheel may be removed for this inspection
c:> page 226, Replacing wheels.
_8 WARNING "'---
-New brake pads don't have the best stop­
pin g power and must be "broken-in" during
the initial 250 miles (400 kilometers). You
can compensate for this by press ing the
brake pedal more firmly. This also applies
later when new pads are installed.
-
- You shou ld perform braking maneuvers for
the purpose of cleaning the brake system
only if road conditions permit. Other road
users must not be put at r isk -you may
cause an acciden t!
- Before descending a steep grade, reduce
speed and shift transmission into a lower
gear or lower driving range. Do not ride the
brakes or hold the pedal down too long or
too often . This could cause the brakes to get
hot and diminish braking efficiency.
- Do not "ride the brakes" by resting your foot
on the pedal when you do not intend to
brake. This may cause the brakes to over­
heat, premature wear and increased stop­
p in g distance.
- Under certain cl imatic and operat ing condi­
tions such as passing through water, dr iv ing
in heavy rain or after washing the vehicle,
the effectiveness of the brakes can be re­
duced. In winter, ice can accumulate on the
b rak e pads, linings, discs and drums. Care­
fully apply brakes for a test. Brakes will dry
and ice coatings will be cleaned off after a
few careful brake applications.
- Driving for an extended period of time on
salt -covered roads wi thout using your
brakes can a lso affect braking efficiency .
173

Driving and th e environment
(D Tips
- Check the depth of the water before driving
through it.
- Do not stop the veh icle, drive in reverse or
switch the engine
off when driving through
water.
- Keep in mind that oncoming vehicles may
create waves that raise the water level and
make it too deep for your vehicle to dr ive
through safely.
- Avoid driving through sa lt water because it
can cause corrosion.
Catalytic converter
It is very important that your emission control
system (catalytic converter) is functioning prop­ erly to ensure that your vehicle is running in an
environmentally sound manner .
~ Always use lead-free gasoline¢ page 186,
Fuel supply .
~ Never run the tank down a ll the way to empty .
~ Never put too much motor oil in your engine
¢ page 195, 9::?1 Adding engine oil .
~ Never try to push- or tow -start your veh icle.
The cata lytic conve rter is an eff icient "clean-up"
dev ice bu ilt into the exhaust system of the vehi­
cle. The cataly tic converter burns many of the
pollutants in the exhaust gas before they are re ­
leased into the atmosphere.
The ex clusive use of u nleaded fuel is critically im­
por tant for the life of the catalyt ic converte r and
p roper functioning o f the engine.
A WARNING ,..___ -
- The temperature of the exhaust system is
high, both when driving and after stopping
the engine.
- Never touch the exha ust tail pipes once they
have become hot. This could result in burns.
- Do not park o r operate the vehicle in areas
whe re the hot exhaust system may come in
contact with dry grass, brush, fue l spill or
other mater ial which can cause a fire.
- Do not apply additional undercoating or
rustproofing on or near the exha ust man i-
178
fold, exha ust pipes, catalytic converter or
heat shields. During driv ing, the substance
used for undercoat ing could overheat and
cause a f ire.
Cl) Note
- Be aware that just one tank fill ing with
le ad·
ed
fue l w ill already ser iously degrade the
performance of the catalytic converter.
- Do not exceed the correct engine oil level
¢page 195.
-Do not drive until the fue l tank becomes
completely empty. The engine co uld m isfire.
Unburned fuel could also get into the ex­
haust system and this could cause the cata­
lyt ic converter to overheat.
- Do not turn
off the ignition while the vehicle
is moving .
- Do not continue to operate your veh icle un­
der these conditions, as otherwise fuel can
reach the catalytic converter . This could re­
sult in overheating of the conve rter, requ ir­
ing its replacement.
- T o assure efficient operation of the Emission
Cont ro l System:
- Have your vehicle maintained properly and
in accordance with the se rvice recommen­
dations in yo ur Warranty
& Maintenance
booklet.
- Lack of proper maintenance as we ll as im­
proper use of the vehicle will impair the
function of the emission control system
and could lead to damage.
(® For the sake of the environment
Even when the Emiss ion C ontrol System is op­
e rat ing proper ly, the exhaust gas can have a
sulfur-like exhaust gas sme ll under some op­
erat ing states. This depends on the sulfur
content of the fuel being used. Us ing a d iffe r­
ent brand of fue l may he lp, or fi llin g the tank
wi th lead-free s uper grade gaso line.
Shutting down vehicle
If you would like you r vehicle to remai n inope ra­
tive for a longer period of time, con tact an Audi
o r other spec ia liz ed dealer. They can adv ise you .,.

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Trailer mode Driving with a trailer
General information
Your Audi was designed primarily for passenger
transportation.
If you plan to tow a tra iler, p lease remember that
the additiona l load will affect durability, econo­
my and performance .
T railer towing not on ly places more stress on the
vehicle, it also calls for more concentrat ion from
the driver .
F or this reason, a lways fo llow the operating and
d riving instructions provided and use common
sense.
Technical requirements
Traile r hitch
Use a weight-carrying hitch conforming to the
gross trailer weight. The hitch must be suitable
for your vehicle and trailer and must be mounted
securely on the veh icle 's chassis at a technically
sound
location . Use on ly a tra iler hitc h with a re­
movable ba ll mou nt. Always chec k w ith the t ra il­
e r hitch m anu fac tur er to make sure that you a re
using the co rrec t hitch.
Do not use a bumper hitch .
The hitch must be installed in such a way that it
does not in terfere with the impact-absorbi ng
bumper system. No mod ificat ions should b e
mad e to the vehicle exhaust and brake systems .
Fr om time to t ime, c hec k t hat a ll h itch mou nti ng
bo lts remain sec urely fastened .
When you are no t tow ing a trailer,
remove the
trai ler hitch ball mount . Th is prevents the hitc h
fr om caus ing damage should you r vehicle be
s truck from behind¢,&. .
Trailer brakes
If yo ur tra iler is equipped w it h a braking system,
check to be s ure that it conforms to all regu la­
tions.
Trailer mode
T he trailer hyd raulic brake system must not be di ­
rect ly connected to the ve hicle's hydraulic b rake
system ¢.&. .
Safety chains
Alw ays use s afety ch ains be tween your ve hicle
and t he tra ile r.
Trailer lights
Tra ile r li ghts must meet all regulations. Be sure
to check w it h your author ized Audi deal er for cor­
r e ct w iring, sw itches, and relays.
Mirrors
If you are unable to see the traffic behind you us­
i ng the regular o uts ide mirrors, then you
must in ­
sta ll extended mirrors .
It is importa nt that you
always have clea r vision to the rea r.
_&. WARNING
- I f a trai ler has elec trical brake s please note
th at these b ra kes are not acti va ted by the
factory -fitted contro l unit -ris k of acci dent!
- After removing the t railer hi tch, do n ot store
it in your vehicle . In case o f su dden braking,
the hi tch could fly forward and injure you or
your passe ngers.
Operating instructions
Maximum traile r weight
A trai ler for you r vehicle is limited to a typical
class 1 or class 2 trailer.
Trailer load distribution
B e sure the load in the t ra iler i s held secure ly in
pla ce to prevent it from sh ifting forw ard , back ­
war d or sideways .
Never allow a passenger to ride in a trailer¢.&.
in Driving in struc tion s on page 182.
Engine cooling system
Towing a trailer makes the engine work harder . It
is important that the cooling system's pe rform­
ance is up to the additional load . Ma ke s ure that
t h e coo ling system has enoug h fluid.
IIJJ,
181

Trailer mode
Tire pressure
When tow ing a trailer, inflate the tires of your ve­
hicle to the cold tire pressure listed under " Full
load" on the label located on the driver's side B ­
pillar (visible when the door is open). Inflate
trailer tires to trailer and tire manufacturers'
specifications.
Lights
The headlight settings should be checked with
the trailer attached before driving off . Check to
make sure both vehicle and trailer lights are
working properly.
Safety chains
Be su re trailer safety chains are properly connect­
ed from the trailer to the hitch on the vehicle.
Leave enough slack in the chains to permit turn­
ing corners. When you install safety chains, make
sure they will not drag on the road when you are
driving.
The chains shou ld cross under the trai ler tongue
to prevent it from dropping in case of separation
from the hitch.
Driving instructions
Driving with a trailer always requires extra care
and consideration.
To obtain the best possible handling of vehicle
and trai ler, please note the following:
.. Do not tow a loaded trailer when your car itself
is not loaded .
.. Be especia lly careful when passing other
vehicles.
.. Observe speed limits.
.. Do not drive at the maximum permissible
speed .
.. Always apply brakes early.
.. Monitor the temperature gauge.
Weight distribution
Towing a loaded trai ler with an empty car results
in a highly unstable distribution of weight. If this
cannot be avoided, drive at very low speeds only
to avoid the risk of losing steering control.
182
A "balanced" rig is easier to operate and contro l.
This means that the tow vehicle shou ld be loaded
to the extent possible and permissib le, wh ile
keep ing the trailer as light as possible under the
c ir cumstances. Whenever poss ible, transfer
some cargo to the luggage compartment of the
tow veh icle while observing tongue load require­
ments and vehicle load ing considerat ions .
Speed
The higher the speed, the more difficult it be­
comes for the driver to control the rig. Do not
drive at the maximum permissible speed. Reduce
your speed even more if load, weather or w ind
cond it ions are unfavorab le - particularly when
go ing downh ill.
Reduce veh icle speed
immediately if the trailer
shows the slightest sign of swaying.
Do not try
to stop the swaying by accelerating.
Observe speed limits. In some areas, speeds for
vehicles towing tra ilers are lower than for regular
vehicles.
Always apply brakes early. When dr iving down­
hill, shift into a lower gear to use the engine
braking effect to slow the vehicle. Use of the
brakes alone can cause them to overheat and fail.
Coolant temperature
The coolant temperature gauge¢ page 10 must
be observed carefully. If the needle moves close
to the upper end of the scale, reduce speed im­
med iately and/or turn off the air conditioner .
If the coolant temperature warning light . in
the instrument cluster starts flashing, pull off
the road, stop and let the engine
idle for about
two m inutes to prevent heat build-up .
&_ WARNING
Anyone not properly restrained in a moving
vehicle is at a much greater risk in an acci­
dent. Never let anyone ride in your car who is
not properly wearing the restraints provided
by Audi.
-