2018 AUDI A5 COUPE stop start

engaged, for example when you notice that the next traffic light is red . This produces an engine
braking effect, which helps to protect the brakes
and tires and reduces the emissions and fuel con ­
sumpt ion to zero (fuel shut-off dur ing decelera­
tion) .
Shift efficiently
Upshifting earlier is an effective way to save fuel.
Staying in a gear too long uses fuel unnecessari­
ly.
Applies to: vehicles with manual transmission
Shift as soon as possible from first to second
gear. S hifting to the next highest gear at approxi­
mately 2,000 RPMs if poss ible is recommended.
Applies to: vehicles with automatic transmissions
Press down on the acce le rator peda l slowly and
avoid "kick -down".
Avoid full acceleration
You should rarely travel at the maximum vehicle
speed. High speeds cause a disproportionately
high increase in fuel consumption, emissions and
traffic noise. Driving more slowly saves fuel.
Reduce idling time
The Start/Stop system* he lps to reduce the idling
time automatically. In vehicles without the Start/
Stop system*, it is efficient to switch the engine
off when stopped at railroad cross ings and long
r ed lights. Stopping the engine for 30-40 sec­
onds already saves more fuel than the amount of
extra fuel needed to restart the eng ine.
It takes a very long time in idle to warm the en­
g ine up to operating temperature. Wear and
emissions are especially h igh in the wa rm-up
phase . Therefore, you should begi n driving im­
mediately a fter starting the engine . Avoid high
RPMs while do ing this .
Have maintenance performed regularly
By having maintenance performed regu larly on
your veh icle, yo u ca n he lp to reduce f uel con-
<(
~ sumption before yo u even start to drive. The
N ~ maintenance condition of your vehicle not only
8 affects traffic safety and long-term value but a l­
'° 3 Driving
so impacts fuel consumption . A poorly main ­
tained engine can lead to fuel consumption that is 10% higher than norma l.
Avoid short trips
The eng ine and exhaust cleaning system must
reach their optimal operat ing temperatu re to ef­
f ectively reduce consumption and emissions.
A cold engine uses a disproportionately high
amount of fue l. The engine reaches operating
temperat ure and consumption normalizes on ly
after approximate ly 2.5 miles (4 km).
Check the tire pressure
To save fuel, make sure the tires are always in­
flated to the correct press ure
~page 351. The
fuel consumption can increase by 5% if the pres­
s u re is only 0.5 bar too low. Due to the increased
rolling resistance, low tire pressures wi ll also
l ead to greater tire wear and will affect driving
behavior.
Do not drive on winter tires year-round, as this
will consume up to 10% more fuel.
Eliminate unnecessary weight
S in ce eve ry po und of ext ra weight increases f uel
consumption, a quick inspection of the luggage
compartment may be worth it to avoid unneces ­
sary weight .
When not be ing used, a roof rack should be re­
moved to decrease the wind resistance of the ve­
hicle. This will save you approximately 12% fuel
at speeds from 62 -75 mph (100 - 120 km/h) .
Save energy
The eng ine drives the generator, which generates
electric ity; the fuel consumpt io n also incr eases
with the demand for electr icity. The refore, switch
electrical eq uipment off when you no longer
need it . Examples of equipment that uses a lo t of
energy are air blowers at a high setting, the rear
window defogger and seat heating* .
@ Note
Do not leave engine idling unattended after
starting. If warning lights shou ld come on to
indicate improper operation, they would go
87

Starting and stopping
the engine
Starting the engine
The I S TAR T ENGIN E ST OP ! button switches the
ignition on and starts the engine.
F ig . 97 Cockp it: START ENGINE S TOP button
Starting the engin e
Applies to: vehicles with manual transmission
.. Press the clutch pedal all the way down and
move the sh ift lever to the neutr al position.
Applies to: vehicles with automatic transmissions
.,. Press the brake pedal.
.. Press the I START E NG IN E STOPI button
¢ fig . 97 . The engine will sta rt.
.,. T he re may be a s light de lay w hen start ing the
engine i n diese l vehicles in colder tempera­
tures . Therefore, yo u must con tinue pressing
the clutch pedal (manual transmission) or the
brake pedal (automatic transmission) until the
engine starts. The
Iii indicator light t urns on
whi le the engine is preheating .
Switching the ignition on /off
If yo u wou ld like to swi tc h t he ign ition on wi th­
out starting the engine, fol low these steps:
.,. Press t he I S T AR T ENG IN E ST OPI button with­
o ut press ing the clutch pe dal (for manual
transm iss ions) or the brake peda l (f or au toma t­
ic transmissions). Ve hicles w ithout the S tart/
Stop system *: the needle in the tachometer
~ moves into the READ Y position .
~ ~ .. To switch the ign ition off, press the button
N 8 again. The needle in the tachometer moves into
~ the OFF posit ion.
co
D rivi ng
The prewa rming runs automat ica lly in diesel
vehicles when the ign ition is switched on .
E q uipment tha t uses a lot of e lec tricity is sw itch­
ed
off temporarily when you start the engine.
If the engi ne does not s tart immediately , the
sta rt ing procedure stops a utomat ica lly af ter a
sho rt time. Repea t the sta rting proced ure.
Start /Stop system*
See the information in c:> page 91, Start/Stop
system .
A WARNING
=
To reduce the risk of poisoning, never allow
the eng ine to run in co nfined spaces .
Q) Note
Avoid high engine speed, full th rottle, and
heavy engine load if the engine has not
r eached operat ing temperatu re ye t. You could
damage the eng ine.
@ For the sake of the environment
Do not let the e ngin e run wh ile pa rked to
warm up . Beg in dr iving immed iate ly . Thi s
re­
duces un necessa ry emissions.
a) Tips
- Some noise afte r start ing the engine is nor­
ma l and is no caus e for conce rn .
- If you leave t he ve hicle w ith the ignition
switched on, the ig nit ion w ill switch off af­
ter a ce rtain amount of time . Ma ke sure t hat
elec trical e quipment such as the exterio r
ligh ts a re swi tched off .
Starting the eng ine
.. Bri ng the veh icle to a full sto p .
.. Press the !S TAR T ENGINE ST OP ! button
c:>
page 89, fig. 97.
-
89

Driving
St ee ring lock1
)
The stee ring locks when you t urn the engine off
using the
! S T A RT ENGINE ST OP I button and
open the driver 's door. The locked steering helps
prevent v ehicle theft .
Emergency off function*
If it is abso lutely necessary, the engine can also
be turned off while dr iv ing at speeds star ting at
4 mph (7 km/h). To switch the eng ine off, press
the
! S TAR T ENGINE ST OP I button tw ice in a row
briefly or press and hold for longer than two sec­
onds.
A WARNING
- Never turn off the engine before the veh icle
has come to a comp lete stop . The full func­
t ion of the brake booster and the power
stee ring is not guaranteed. Yo u must use
more force to turn or b rake . Because you
cannot s teer an d brake as you usu ally
would, t his co uld lead to accidents and ser i­
ous in juries.
- Alw ays t ake the key wi th you w henever you
leave you r vehicle . Othe rw ise, the engi ne
cou ld be started o r electrical equipment
s uch as the power windows cou ld be operat­
ed . This can lead to se rious injury.
- For safety reasons, always park the vehicle
with the se lector lever in the P position
(a u­
tomat ic transmission) or with 1st gear en­
gaged (manual transmission). Otherwise
the vehicle could roll away u nintent ionally .
(D Note
If the eng ine has been under heavy load for
an extended per iod of t ime, heat builds up in
the engine compartment after the engine is
sw itched off and there is a risk of damaging
the engi ne . For this reason, let the engi ne run
for at idle for approximately two minutes
be­
fore shutting it off.
l) Th is fun ction is not avai la bl e in al l co un tries.
90
(D Tips
Fo r u p to 10 minutes after stopping the en­
g ine, the radiator fan may turn on again auto­
matically or it may continue to r un (even if
the ig nition is switched off) for the following
r easons:
- The coolant temperature is increas ing due
to trapped heat.
- If the eng ine is wa rm and the eng ine com­
partment a lso heats up from strong sun­
light .
- Applies to: vehicles with diesel particulate
filter: The emissions control system is heat­
ed through the regeneration process, even if
the engine has not reached its operat ing
tempe rature yet.
Messages
Engin e running . Warning! Turn off ignition be ­
fore leavin g vehicle
This message appears and a warning tone sounds
i f you open the drive r's door w hen the eng ine is
r un ning .
Applies to: vehicles with manual transmission
Please pres s clutch pedal
This message appears if you do not press the
clutch pedal to start the eng ine. The engine can
o nly be started w hen the clutch pedal is pressed.
Applies to: vehicles with automatic transmissions
Plea se pres s brake pedal
This message appears if you do not press the
bra ke peda l when sta rting t he eng ine .
Ill Remote control key : key not recognized. Is
the key still in the vehicle ?
This indicator light turns on and this message ap­
pears if the ignition key was removed from the
vehicle when the engine was running . If the igni­
tion key is no longer in the vehicle, you cannot
switch on the ignition or start the engine once

you stop it. You also cannot lock the vehicle from
the outside .
Applies to: vehicles with au tomatic transm issions
Shift to P , otherwise vehicle can roll away.
Doors do not lock if gearshift is not in P
This message appears for safety reasons if the
selector lever is in the N position when you
sw itch the ignition off. Move the selector leve r to
the P position. Otherwise the vehicle is not pro­
tected from ro lling and it cannot be locked .
DJ Remote control key: hold back of key
against the designated area . See owner 's man­
ual
If the indicator light turns on and th is message
appears, there is a malfunction
c> page 91 .
Applies to: vehicles with automatic transmissions
Shift to P before leaving car, otherwise vehicle
can roll away
This message appears if the driver's door is
opened while the ignition is switched on and the
transmission has not been shifted to the P posi­
tion . Sh ift the transmiss ion into the P position
and turn off the ignition if you are leaving the ve­
hicle . Otherwise the vehicle could roll. Also see
c::> page93 .
Starting the engine when there is a
malfunction
It may not be possible to start the engine under
certain circumstances, for example if the battery
in the vehicle key is drained, if interference is af­
fected the key or if there is a system malfunc ­
tion .
Fig. 98 Cente r console/ remote contro l key: starting t he
eng ine if there is a malfunc tion
Driving
Requirement: the message Remote control key:
hold back of key against the designated area .
See owner's manual
must display and the DJ i n­
dicator light must turn on.
.,. Place the remote control key on the location
shown in the illustration
y >l) c::> fig . 98.
Applies to: vehicles with manual transmission
.,. Press the clutch pedal.
Applies to: vehicles with automatic transmissions
• Press the brake pedal.
.. Press the !START ENGINE STOP ! button. The
engine will start.
.,. Drive to an authorized Audi dea ler or author­
ized Aud i Service Facility immediately to have
the malfunction corrected.
@ Tips
You can view the message again by pressing
the
I S TART ENGINE STOP I button.
Start/Stop system
Description
Applies to: vehicles with Start/Stop system
The Start/Stop system can help increase fue l
economy and reduce CO2 emissions.
In Sta rt/Stop mode, the engine shuts off auto­
matically when the vehicle is stopped, such as at
a traffic light. The ignition remains switched on
during this stop phase . The engine wi ll restart
automatica lly when needed .
Th e Start/Stop system is a utomaticall y activated
as soon as the ignition is switched on.
Basic requirements for Start/Stop mode
-The driver's door must be closed .
-The driver's seat belt much be fastened.
- The hood must be closed.
- The vehicle must have driven faster than
2 mph
(3 km/h) since the last time it stopped .
- A trailer must not be hitched to the vehicle.
If you leave the vehicle during a stop phase, the
engine can be restarted within approximately 30
seconds if the following requi rements are met:
IJ>
91

Driving
-The driver's door must be closed, the driver's
safety belt must be fastened, and the brake peda l (automat ic transmission) or the clutch
pedal (manua l transmission) must be pressed.
Or:
-The driver's door must be closed, the brake
pedal (automat ic transmission) or the clutch
pedal (manua l transmission) must be pressed,
and a gear must be engaged.
(D Note
Always sw itch the Start/Stop system off when
driving through water
q page 91.
@ Tips
The engine stops shortly before the vehicle
comes to a stop
1) .
Stopping/starting the engine
Appl ies to: ve hicl es w ith Sta rt/Stop system
F ig . 99 Instrument cluste r: e ng ine sw itched off (stop
phase)
A ppl ies to: ve hicles w ith manu al transmiss ion
• When the vehicle is stat ionary, shift to neut ral
and release the clutch pedal. The eng ine will
switch off . The
II indicator light appears in the
information line at the bottom of the instru­
ment cluster d isp lay. The needle in the tachom­
eter also moves into the
R EADY position .
• The engine will resta rt if you press the clutch
pedal. The ind icator light turns off.
A ppl ies to: ve hicles w ith a uto mat ic t ra nsmi ssio ns
• B rake the vehicle to a stop . The engine stops
shortly before the vehicle comes to a stop or if
the ve hicle is stationary
l). Keep yo ur foot on
l) Ma rket -spe cifi c
92
the brake peda l. The II indica tor light appears
in the status line at the bottom of the instru ­
ment cluste r display. The need le in the tachom ­
eter also moves into the
READY position 1>.
• The engine starts again when you take your
foot off the brake pedal. The i ndicator light
turns off .
Additional information for automatic
transmissions
The eng ine stops in the P, N and D selector lever
pos itions.
If you se lect the R posit ion d uring a Stop phase,
the engine will start aga in.
Se lect t he P position qu ickly to prevent the en ­
gine from starting u nintent ionally when shifting
through R .
You can determine for yourse lf if the engine wi ll
stop or not by red ucing or inc reasing the amount
of force you use to press t he brake peda l. For ex­
ample, if yo u only lightly press on the brake ped­
al in stop-and-go traffic or when turning, the en­
gine w ill not switch off when the vehicle is sta ­
tiona ry . A s soon as you press the b rake down
harder, the engine wi ll switch off .
(0 Tips
-Press the brake peda l during a Stop phase
to keep the vehicle from rolling.
-The ignit io n wi ll turn off if yo u press the
!START ENGINE STOPI butto n du ring a stop
phase. The needle in the tachomet er moves
into the
OFF position.
General information
App lies to: vehicles wi th Start/S top sys te m
The standard Start/Stop mode can be canceled
for various system-related reasons.
Engine does not switch off
Before and dur ing each stop phase, the system
checks if certain conditions have been met. If the
lilJ.

@j indicator light appears in the instrument clus­
ter disp lay, the engine will not be stopped, for
examp le in the following situations:
- T he eng ine has not reached the minimum re­
quired temperature for Start/Stop mode.
- T he interior temperature selected by the cli-
mate contro l system has not been reached .
- T he outs ide temperature is ext remely h igh/low.
- The windshield is being defrosted.
- The neck heating* is turned on .
- The vehicle battery charge level is too low.
- The steering wheel is turned at a sharp angle or is moving .
- After engaging the reverse gear.
- On sharp inclines.
- At high altitudes .
Engine automatically restarts
The standard Start/Stop mode will be canceled
during a stop phase in the follow ing s ituations .
The engine resta rts without any action by the
driver.
- The vehicle rolls , for example while on a slope.
- The interior temperature differs from the tem-
perature selected in the A/C system .
- The windshield is being defrosted.
- The brake pedal is pressed several times in a
row.
- The vehicle battery charge level is too low .
- Power consumption is high.
The engine can turn off again when the condi­
tions for Start/Stop mode are met.
Ignition is switched off automatically
To prevent the vehicle battery from draining, the
ignition will switch off automat ically under the
following conditions :
- The Start/Stop system has stopped the engine .
- The vehicle is stationary.
- You left the ve hicle and the engine was not re-
started within approximate ly 30 seconds .
If th is happens, you w ill see the message
Igni­
<( ~ tion turns off automatically in the instrument
~ cluster and the activated low beams are replaced N
8 by the parking light. The parking lights will \0
3 Driving
switch off after approximately 30 minutes or
when you lock the vehicle .
T he ign ition also switches off when you lock the
vehicle from the outside during a stop phase.
If the Start/Stop system has not turned off the
engine or if you have switched the Start/Stop sys­
tem off manually, the ignition w ill no t be auto­
matically sw itched off and the eng ine will contin­
ue to
run ¢& .
A WARNING
To reduce the risk of poisoning, never allow
the engine to run in confined spaces.
(D Tips
Applies to: vehicles with automatic transmissions
- If you leave the vehicle with the 0/5 or R se­
lector lever position engaged, the parking
brake is automatically set.
- If you select the D or N selector lever posi­
tion after shifting into reverse, the vehicle
must be driven faster than 6 mph (10 km/h)
in order for the engine to switch off again .
Manually switching the Start/Stop system
off/on
Applies to: veh icles w ith Start/Stop system
If you do not wish to use the system, you can
switch it off manually.
Fig. 100 Center co nsole: Start/Stop system butto n
-
.,. To switch the Start/Stop system off/on man­
ually, press the
l (A) ml button. The LED in the but­
ton turns on when the system is switched off.
Ill-
93

Driving
(D Tips
If you switch the system off during a stop
phase, the engine will start again automati­
cally .
Messages in the instrument cluster display
App lies to: ve hicles w ith S tart/Stop system
Automatic start /stop deact ivated: Please
restart engine manually
This message appea rs whe n specific conditions
are not met dur ing a s top phase . The Sta rt/Stop
system w ill not be ab le to restart the eng ine. The
e n gine mus t b e starte d wit h the
I START ENGI NE STOP I butt on .
Automatic start/stop system: malfunction!
Function unavailable. Please contact Service
T here is a malfunc tion in the Sta rt/S top system.
D rive t he ve hicle to an author ized A udi dealer or
author ized Se rvice Facility as soon as poss ible to
have the ma lf u nction co rrected .
Electromechanical
parking brake
Fig. 10 1 Center conso le : pa rk in g b rake
r-­ r--
0
~ a, a,
Your veh icle is equippe d with an e lec tromechani­
cal parking
b rake @ q fig. 101. The par king
b rake is designed to prevent the vehicle from
ro lling un intent iona lly and replaces the hand
brake.
Setting /manually releasing the parking
brake
.. P ull the(®) switch to set the pa rking brake. The
LED in the sw itch turns on. The
-(USA mod-
94
els)/ . (Canada mo dels) indicator light also
turns on in the instrument cluster disp lay.
.. To re lease the park ing bra ke man ually, press
the bra ke or accelerator peda l w hile the igni­
tion is sw itched on and press
the(®) switch at
the same t ime . The LED in the button and the
i n d icator light in t he d isp lay tur n
off.
Releasing the parking brake automatically
Requirement: the d river 's door must be closed .
.. To start driving and r elease the parking brake
automatically, p ress the accelerator peda l as
usual.
I n add ition to releas ing t he pa rking brake auto­
ma tic ally, o ther convenien ce an d safety func tion s
are avai lab le when you s tart
d riving ¢ page 95,
Starting to drive.
Preventing the automatic parking brake
release
The vehicle cou ld begin ro ll ing uninten tionally,
depending on the hill or if towi ng a tra ile r .
.. T o preven t the p arking br ake fr om rele asing au­
t oma tic ally, pull and ho ld the (®) swi tch and
press the a cce lerator peda l. The pa rking brake
remains set and p revents the ve hicle from roll­
ing backward.
.. You can release the<® > switch again once you
are sure that yo u are giving enoug h driving
force to the wheels by press ing the accelerator
pedal.
Emergency braking function
Yo u can use the emergency braking function in an
emergency situat ion, o r if the standa rd brake op­
eration ma lfu nctions or is disab led.
.. Pull and hold the(®) switc h.
.. As soon as you re lease the (®) switch or acceler-
ate, the braking stops.
P ulli ng and ho ld ing
the(® ) switch wh ile driving
t h e ve hicle activates the eme rgency brak ing func­
tion. The ve hicle is bra ked at a ll four wheels by
activating the hydraulic brake system. The brak­
i ng effect is sim ilar to heavy
brak ing ¢ A-
To reduce the risk of act ivat ing the emergency
bra king by m ista ke, a warning tone (b uzzer)

<( a, .... N ,....
N .... 0 \0
3 a,
sounds when the C®> switch is pulled . Emergency
braking stops as soon as
the(®) switch is released
or the accelerator peda l is pressed.
Parking
.,. Press t he b rake peda l to stop the vehicle .
.,. Pull the(®) switc h to set the parking brake .
.,. Applies to: automatic transmission: Select the
P selector lever position .
.,. Turn the eng ine off c> & .
.,. Applies to: manual transmission: Engage 1st
gear .
.,. Turn the steer ing wheel when parking on in­
clines so that the wheels will roll into the curb
i f the veh icle starts moving.
_& WARNING
- Never ac celer ate o r release the clutch pedal
carelessly when a gear or a selector lever
posit ion (automatic transm ission) is engag­
ed wh ile the vehicle is stationary and the
en­
gine is runn ing. Otherwise, the vehicle will
start to move immediately and this cou ld
re­
sult in an accident.
- Emergency braking should only be used in an emergency, when the normal brake peda l
has failed or the brake pedal is obstructed.
During emergency braking, your veh icle will
bra ke sim ila r to heavy brak ing . ESC and the
associated components (ABS, ASR, EDL)
c annot overcome the laws of physics.
Around curves and when road or weather conditions are bad, a fu ll brake application
can cause the vehicle to skid or the rear end
to swerve, which increases the risk of an
ac­
c ident.
- If the power supply fails, you cannot set the
park ing brake if it is released. If th is is the
case, stop the veh icle on leve l ground and
secure it by engaging 1st gear (manual
transmiss ion) or select ing the P selector lev­
er position (automatic t ransm iss ion). See an
authorized Aud i dealer o r autho rized Aud i
Service Facility for assistance.
- Always take the vehicle key with you when
leaving your vehicle, even if for a short pe ri­
od of time. Th is app lies p articu larly when
children rema in in the vehicle. Otherwise,
D riv ing
children could start the engine, release the
parking brake or operate e lectrical equip­
ment such as power w indows, which
in­
creases the risk of an accident.
- No one, especially children, should remain
in the vehicle when it is locked. Locked
doors make it more difficu lt for emergency
wo rkers to get into the vehicle, which puts
lives at risk .
(D Tips
Applies to: vehicles with automatic transmissions
When stopp ing at a t raff ic signa l or stopp ing
i n city traffic, yo u can set the park ing bra ke
manually. The vehicle does not have to be
held with the brake pedal. The park ing brake
eliminates the tendency to creep when a
se­
l ector lever position is engaged. As soon as
you press the accelerator peda l, the parking
brake re leases automatically and your vehicle
starts to move
c>page 95.
(D Tips
- Occasional noises when the parking brake is
set and released are normal and are not a
cause for concern.
- The parking brake goes through a self-test cycle at regu lar intervals when the vehicle is
stopped. Any no ises assoc iated with th is are
normal.
- If there is a power failure, the parking brake
w ill not set if it is released, and it will not
release if it is set
c> A . See an a uthorized
Audi dealer or author ized Audi Service
Fa­
cility for assis tance.
Starting to drive
Various convenience and safety funct ions may be
available when the vehicle begins driving,
de­
pend ing on vehicle equipment.
Starting on hills w ith the pa rking brake set
Requirement: the driver's door must be closed .
.,. To start driving comfortably when on a hi ll, set
the parking brake and begin driving as usual.
The braking force of the parking brake does not
..,.
95