2017 AUDI A4 brake

Driving
next traffic light is red . This produces an engine
braking effect, which helps to protect the brakes
and tires and reduces the emissions and fue l con ­
sumpt ion to zero (fuel shut-off during decelera­
t ion).
Shift effici ently
An effective way to save fuel is to upshift earlier.
Staying in a gear too long uses fue l unnecessari ­
ly .
P ress down o n the acce lerator peda l slowly and
avoid "kick -down".
Avoid full acceleration
You shou ld rare ly t rave l at the maximum vehicle
speed. High speeds cause a disp roportiona tely
h igh inc rease in fuel consump tion, emissions and
traffic no ise . Slower driving saves fuel.
Reduce idling time
The Start/Stop system* he lps to reduce the idling
time automatically. In vehicles witho ut the Start/
S top system* , it is efficient to swit ch the eng ine
off when stopped at r,;1ilro,;1d crossi ngs and long
red lights . Stopping the engine for 30 -40 sec ­
onds already saves more fuel than the amount of
extra fuel needed to restart the engine.
It t akes a very long time in idle to war m the en ­
g ine up to opera ting tempera ture . Wea r and
emissions are especially high in the warm -up
p hase . Therefore, yo u should begin driving im ­
mediately after starting the engine. Avoid high
RPMs while do ing th is.
Have maintenance performed regularly
By having ma intenance performed regularly on
your vehicle, you can help to reduce f uel con­
sumpt ion befo re yo u even start to dr ive. The
maintenance condition of your vehicle not only
affects t raffic safety and long-term value but a l­
so impacts
fuel consumpt ion . A poorly main ­
tained engine can lead to f uel consumption that
is 10% higher than normal.
Avoid short trips
The engine and exhaust cleaning system m ust
reach the ir opt imal
operating temperature to ef­
fectively reduce consumption and em iss ions.
74
A cold engine uses a d isproportionately high
amount of fue l. The engine reaches operating
temperat ure and cons umption norma lizes on ly
after approximate ly
four ki lometers.
Check the tire pres sure
To save fue l, make sure the t ires are always in­
flated to the correct press ure
¢ page 32 7. The
fuel consumpt ion can increase by S% if the pres ­
s u re is only 0.5 bar too low. Due to the increased
roll ing resistance, low tire pressures w ill also
l ead to greater tire
wear and will affect dr iving
behavior.
Do not drive on
winter tires year-round, as this
will consume up to 10% more f uel.
Eliminate unnecessary we ight
Since eve ry kil og ram o f extra weight in creases
fuel consumption, a quick inspection of the lug­
gage compartment may be worth it to avoid un­
necessary we ight.
When no t be ing used, a roof rack sho uld be re ­
moved to decrease the wind resistance of the ve­
hicle . You will save approx imately
12% of your
fuel when at speeds from 62-75 mph (100-120 km/h).
Save energy
The eng ine drives the generator, which generates
electricity; the fuel consumption also inc reases
with the demand for e lectricity. Therefore, switch
e lectrical equ ipment off when you no longer
need it. Examples of eq uipment that uses a lot of
energy are air blowers at a high setting, the rear
window defogger and seat heating* .
(D Note
Do not leave engine idling unattended after
starting . If warning lights shou ld come on to
i ndica te improper operation, they would go
unheeded . Extended idling also prod uces
h eat, w hic h could result i n overheating o r
o ther damage to the veh icle o r othe r prope r­
ty .

Driving
Starting and stopping
the engine
Starting the engine
The I S TAR T ENGIN E ST OP I button switches the
ignition on and starts the engine.
F ig . 77 Cockp it : S TAR T ENGI NE S TOP button
Starting the engine
.. Press the brake pedal¢.&, .
.. Press the
I S TAR T ENGINE STOPI button
c> fig . 77. The engine will star t .
.. It is possible that there will be a slight de lay
when starting the eng ine in d iesel veh icles in
colder temperatu res. Therefore, you must hold
the b rake peda l down until the eng ine starts.
T he
Iii in di cato r lig ht tu rns on while the en ­
gine is p reheat ing.
Sw itching the ignition on/off
If you would like to switch the ign ition on with­
ou t start ing the eng ine, fo llow these steps :
.. Press t he
I S TAR T ENGIN E STOPI button with ­
out
press ing the brake pedal. Ve hicles w ithout
the Start/Stop system* : the needle in the tach­
ometer moves into th e
READY position .
.. To swi tch the ign ition off, press t he b utton
ag ain. The needle in the ta ch ometer moves into
the
OFF pos it io n.
The prewarming r uns automatically in diese l
ve hicl es w hen the ig nitio n is swi tched on.
Equipment that uses a lot of electricity is switch ­
ed off temporarily when you sta rt the engine .
If the e ngine does not start immed iate ly, the
starting procedure stops automatically after a
short t ime . Repeat the starting procedure .
76
Start/Stop system*
Note the info rmation in ¢ page 78, Start/Stop
sys tem.
A WARNING
- To reduce the ris k of po ison ing, never allow
the engine to run in conf ined spaces .
- T he brake booster and power s teer ing no
longer f unction w hen you stop the engi ne.
You must use more force when braking or
steering . Because yo u cannot brake and
steer as you usually would, this cou ld lead
to accidents and serious injuries. These
fu nctions are st ill active if the Sta rt/Stop
system * has s topped the engine.
('Q) Note
Avo id h igh engine speed, full t hrottle, and
h eavy engine load if the eng ine has not
r eache d operat ing tempera tu re ye t. You could
d am age the eng ine.
@ For the sake of the environment
Do not let the eng ine run wh ile pa rked to
warm up . Beg in d riving immed iate ly . T his re­
du ces unne cess ary emissions .
(0 Tips
- Some noise afte r starting the eng ine is nor­
ma l and is no cause for co nce rn .
- If you leave the ve hicle w ith the ignition
switched on, the ign itio n w ill switch off af ­
te r a ce rtain amount of ti me. Make sure that
elect rical eq uip m ent such as the exterio r
ligh ts a re swi tched off .
Stopping the engine
.. Bri ng the vehicle to a full s top .
.. Press the
I S TAR T ENGINE ST OP I button
c> page 76, fig. 77 .
Emergency off function*
If i t is absolutely necessa ry, the eng ine ca n also
b e tu rned o ff whi le driving a t speeds starting at
4 mph ( 7 km/h) . To sw itch the engine o ff, press
the
I S T ART ENGI NE ST OPI button twice in a row .,.

<( a, .... N ,....
N .... 0 0
3 a,
briefly or press and hold for longer than two sec ­
onds.
A WARNING
- Never t urn off the engine before the veh icle
has come to a comp lete stop.
- Please note that the brake booster and pow­
er steering on ly work when the engine is
running. When the engine off, you must use
more force to steer or b rake the ve hicle. Be­
cause the usual steering and brak ing capa ­
b ili ty is not ava ila ble, the risk of accid ents o r
injuries i ncre ases .
- For safety reasons, always park the vehicle
with the se lector lever in the P position .
Ot herwise, the re is the r is k t hat the vehicle
c o ul d roll uninten tion ally.
- After the engine h as bee n sw itched off, the
r adi ator fan c an con tinue to run for up to
1 0
m inu tes -even wi th the ig nition switche d
o ff . I t can a lso switch on again after some
t ime if the coolant temperature rises as the
result of heat buildup or if t he engine is a l­
ready warm and the engine compartment is
also heated by the sun's rays.
(D Note
I f the en gine has been under heavy load for
an e xtended per io d of t ime, heat builds up in
the engine compartment after the engine is
sw itched off and there is a risk of damagi ng
the engine . For this reason, let the eng ine run
at idle fo r approximately two minu tes before
shut ting it off .
Messages
Engine running. Warning! Turn off ignition be­
fore leaving car
This message appea rs and a warn ing tone sounds
i f you open t he d river's doo r when the engi ne is
ru nning.
Please press brake pedal
This message appea rs if you do not press the
brake pedal when starting the eng ine.
D riving
Ill Remote control key: key not recognized. Is
the key still in the vehicle?
T h is ind icator l igh t tu rns on and this message ap­
pears if the ignition key was remove d from the
vehicle when the engi ne was running . If the ig ni­
tion key is no lo nger in the vehicle, you cannot
switch on the ignition or start the engine once
you stop it . You also cannot lock the ve hicle from
the outside .
Shift to P, otherwise vehicle can roll away.
Doors can be locked in P only
T h is mess age appears for safety re asons if the
selector lever is in the N pos it ion when yo u
switch the ignition off. Move the se lector lever to
t h e P position . Othe rw ise the vehicle is not pro­
tected from roll ing and it cannot be locked.
II Remote control key: hold back of key
against the de signated area. See owner' s man­
ual
If t he indica to r ligh t turns on and this message
appea rs, there is a malfunction ~
page 78.
Shift to P before leaving car, otherwise vehicle
can roll away
Th is message appears if the drive r's door is
opened wh ile the ign ition is switched on an d the
t ran sm issio n has not been s hifte d to t he
P posi­
t ion. Shift t he tr ansmission in to the
P p o sition
and t urn o ff the igni tion if you are leaving the ve­
hicle . Otherwise the vehicle could roll. A lso refe r
to
~ page 80.
77

Driving 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. 78 Center console/remote contro l key: starting the
eng ine if there is a m alfunction
Requirement: the message Remote control key:
hold back of key against the designated area.
See owner's manual must display and the D)in­
dicator light must turn on.
.. Place the remote control key on the location
shown in the illustration
y>l) ~ fig. 78.
.. Press the brake pedal~ A in Starting the en­
gine on page
76.
.. Press the l~S_T_A_R_T_E_N_G_I_N_E_S_T_O_P_I button . The
engine will start .
.. Drive to an authorized Audi dealer or author­
ized Audi Service Facility immediately to have
the malfunction corrected.
(D Tips
You can view the message again by pressing the
I START ENGINE STOP! button.
Start/Stop system
Description
App lies to: ve hicles w ith S ta rt-Sto p system
The Start/Stop system can help increase fuel
economy and reduce CO2 emissions.
l ) Market -spe cific
78
In Start/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 will restart automatically when needed.
The Start/Stop system is automatically 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 requirements are met:
- The driver's door must be closed , the driver
must be wearing the safety belt and the brake
pedal must be pressed . Or:
- The driver's door must be closed, the brake
pedal must be pressed and a gear must be se­
lected.
({D Note
Always switch the Start/Stop system off when
driving through water
~page 78.
(D Tips
The engine stops shortly before the vehicle
comes to a stop
l). The full function of the
brake booster and the power steering is still
available.

Stopping and starting the engine
Applies to: vehicles with Start-Stop system
Fig. 79 Instrument cluster : eng ine sw itched off (s top
p hase)
~ B rake the ve hicle to a stop. The engine stops
shortly before the vehicle comes to a stop or if
the vehicle is stationa ry
1l. Keep your foot on
the brake pedal. The
II indicator light appears
in the stat us line at the bottom of the instru­
ment cluster d isplay. The needle in the tachom­
eter also moves into the READY
1l position .
~ The engine starts aga in when you take your
foot off the b rake pedal.
If the park ing brake is
set, the engine w ill only start aga in when the
a cce le rator pedal is p ressed
1>. The indica tor
li gh t turns off.
Additional information The engine stops i n the P, N and D selector lever
positions .
If you select the R pos ition dur ing a Stop phase ,
the eng ine will start again .
Select the P pos ition quickly to p revent the en­
g ine from starting unintentionally when sh ift ing
through R.
You can determine for yourself if the engine will
stop or not by reducing or increasing the amount
of force you use to press the brake pedal. For ex­
ample, if you only lig htly press on the brake ped­
al in stop-and-go traff ic or when turning, the en­
g ine will not switch off when the vehicle is sta­
tionary . As soon as you press the brake down
ha rder, the eng ine will switch off.
l l Ma rket -spe cific
Drivi ng
(D Tips
- Press the bra ke peda l during a Stop phase
to keep the vehicle from rolling.
- The ignition will turn off if yo u press the
!START ENGINE STOPI butto n dur ing a stop
phase. The needle in the tachometer moves
into the
OFF position.
General information
Applies to: vehicles with Start-Stop system
The standard Start/Stop mode con be canceled
for different system-related reasons.
F ig. 80 Instrument cluste r: eng ine stop temporarily un­
ava ilable
Engine does not switch off
Before and dur ing each stop phase, the system
checks if certain conditions have been met. For
example, the eng ine will not switch off in the fol­
lowing situations:
- The engine has not reached the minim um re­
quired temperature for Start/Stop mode.
- The inte rior temperature selected by the A/C
system has not been reached.
- The outside temperature is extremely high/low.
- The windsh ield is being defrosted .
- The battery charge level is too low .
- The steering wheel is turned at a sharp angle o r
is moving .
- After engaging the reverse gear .
- On sharp incl ines.
- At high altitudes .
r,jj also appears in the instrument cl uster d is­
play.
79

Driving
Engine automatically r esta rt s
The standard Start/Stop mode will be canceled
during a stop phase in the follow ing situations.
The engine restarts without any action by the driver .
- The vehicle rolls, for examp le while on a slope.
- The inter io r temperatu re differs from the tem-
perature se lected in the A/C system.
- The w indshield is being defrosted.
- The brake pedal is pressed several t imes in a
row .
- The battery charge level becomes too low .
- Power consumption is high .
The engine can turn off again when the condi­
tions for Start/Stop mode are met .
Ignition is swit ched off aut omaticall y
To prevent the battery from dra ining, the ignition
will sw itch off
aut omati cally under the following
conditions:
- T he Sta rt/Stop system has stopped the engine.
- The vehicle must be stationary .
- You left the veh icle and the engine was not re-
started within approximately 30 seconds.
If this happens, you will see the message
I gni ­
tion turn s off automatically in the instrument
cluster and the activated low beams are replaced
by the parking light. The parking lights will
sw itch off after approximately 30 minutes or
when you lock the vehicle .
The ignition also switches off when you lock the
veh icle from the outs ide dur ing a stop phase.
If the Start/Stop system has not turned off the
engine or if you have sw itched the Start/Stop sys­
tem off manually, the ignition will not be auto­
mat ically switched off and the engine w ill cont in­
ue to run~& .
.&, WARNING
To red uce the risk of poisoning, neve r allow
t he engine to r un in confined spaces.
80
-
@ Tips
-If you leave the ve hicle with the D/S 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
App lies to: vehicles wit h Start -Stop system
If you do not wish to use the system, you can
switch it off manually.
- -
. !.. r' '!. .:-,/'"~ ~
tJ .,. -,J
-----::::I
F ig . 81 Cen te r conso le: S tart/Stop system butto n
..
.,. To switch the Start/Stop system off/on man­
ually, press the
l (A) "'I button . The LED in the but­
ton turns on when the system is switched off.
(l} 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: vehicles wit h Start-Stop system
St art- stop system: de activated . Please
restart engin e manually
This message appears when spec ific conditions
a re not met during a stop phase . The S tart/Stop
system will
not be ab le to res tart the eng ine . The
engine m ust be sta rted with t he
I STAR T ENGINE STOP! button. ....

Automatic start /stop syst em: malfunct ion!
F unction una vailabl e. Please contact Ser vic e
There is a malfunction in the Start/Stop system .
Drive the vehicle to an authorized Audi dealer or
authori zed Service Facility as soon as possible to
have the malfunction corrected.
Electromechanical
parking brake
Operating
The electromechanical parking brake replaces
the hand brake.
Fig. 82 Center co nsole: parking brake
"'Pull the(®) ~ fig. 82 sw itch to set the park ing
brake . The LED in the switch illuminates . The
- (USA models)/ . (Canada models) a lso
turn on in the instrument cluster display
Q page 82, Starting from a stop .
"'To release the parking brake, press the brake or
accelerator pedal while the ignition is switched
on and press the button at the same time(®).
The LED in the button and the indicator light in
the display turn off.
Your vehicle is equipped with an electromechani­
cal parking brake . The parking brake is designed
to prevent the vehicle from rolling unintentional­
l y and replaces the hand brake .
In addition to the normal functions of a tradi­
tional hand brake, the electromechanical parking brake provides various convenience and safety
functions .
Emerg enc y braking function
The emergency braking fu nction ensures that the
vehicle can be slowed down even if the
standard
D rivi ng
brakes ma lfunction Q page 82, Emergency
braking function.
.&_ WARNING
-
- Do not press the acce lerator pedal inadver-
tently when the vehicle is stationary, the en­
gine is running and a gear is selected. Oth­
erwise, the vehicle will start to move imme­
diate ly and this could result in an accident .
- If the power supply fails, you cannot set the
parking brake if it is released . In this case,
park the veh icle on leve l ground and secure
it by p lac ing the selector leve r in the P posi­
tion. See an authorized A udi dealer or au ­
thorized A udi Se rvice Fa cil ity for assis tance.
(D Tips
- Occasional noises when the parking brake is
set and released are normal and are not a
cause fo r concern.
- The pa rking brake goes through a self-test
cy cle at regu lar inte rvals when the vehicle is
stopped . Any no ises asso ciated wi th th is are
normal.
- If there is a powe r failure, the parki ng brake
canno t be set if it is rele ased, and i t will not
re lease if it is set ~& . See an a uthorized
Audi dealer or authorized Audi Service Fa­
cility for assistance.
- If the parking brake is malfunctioning, the
LED in the
C® button blinks . It may not be
possible to set the parking brake . If the
park ing brake is set, use the hill start assist
to release it
Q page 82
Parking
.,. Press the brake pedal to stop the veh icle.
.,. Pull the
C® switch to set the parking b rake .
.,. Select the P se lector lever position .
.,. Switch the engine off
Q _&. .
.,. Turn the steering w heel when par king o n in­
clines so that the wheels w ill roll into the cu rb
if the vehicle starts moving .
81

Driving
A WARNING
-Always switch th e ignit ion off and take the
vehicle key with you when leav ing the veh i­
cle, eve n for a short per iod of t ime . This ap­
plies particularly when chi ld ren remain in
the ve hicle. Othe rwi se, children coul d sta rt
the engine, re le ase the p arki ng bra ke o r op­
er ate ele ctrica l equipmen t such as power
windows, which increases the risk of an acci ­
dent.
- When the vehicle is loc ke d , no one -particu ­
larly not children -sho uld rema in in the ve­
hicle . Locked doors make it more difficult
f or eme rgency workers to get into the vehi­
cle, which p uts lives at risk.
Starting from a stop
The hold assist function ensures that the parking
brake releases automatically when the vehicle
starts moving .
Stopping and setting the parking brake
" Pull th@(®) switch to s@t th @ parking bra k@ .
Starting and automat ically releasing the
parking brake
" When you pr ess t he accelerator pedal, the
par king b rake is autom atically released and
yo ur vehicle begins to move.
T he parki ng b rake c an be set if you must s top the
ve hicl e at a stop lig ht or in t raff ic. Th e ve hicle
does not have to be he ld with the brake pedal.
The parking brake e liminates the tendency to
creep when a selector lever position is engaged .
The par king b rake releases automatica lly and the
ve hicle beg ins to move as soon as you press the
accelerator pedal as usual.
Starting on hills
When starting on hills, hill start assist prevents
the vehicle from un intent iona lly rolling back. The
braking force of the parking brake does not re­
lease until the wheels bu ild up enoug h driving
force.
82
(D Tips
Fo r safety reasons, the par king brake only re­
l eases automatically when the drive r's door is
closed.
Starting to drive with a trailer
To prevent rolling back unintentionally on a hill,
do the following:
.. Keep the(®} switch pulled and press the acce l­
erator pedal. The parking brake remains set
and prevents the ve hicle from roll ing backwar d.
.. You can release the<®> switch once you a re sure
that you are giv ing enough driv ing force to the
wheels by pressing the accelerator pedal.
Depend ing on the weight of t he rig (vehicle and
trailer) and the steepness of the incline, you may
r oll backward as you start.
Emergency braking function
In the event that the standard brake system fails
or locks up.
.. To brake your veh icle in an eme rgency, pull the
<® > switch and ho ld it pulled.
.. As soon as you re lease the <®> switch or acceler-
ate, the braking stops.
P ulli ng and ho ld ing the C®l switch wh ile driving
the ve hicle activates the eme rgency brak ing func­
tion. The ve hicle brakes at all four wheels by acti­
vat ing the braking hydraulics . T he braking effect
i s sim ila r to mak ing a n emergency stop .
Q &
To reduce the risk of act ivat ing the emergency
braking by m istake, an audib le warning tone
(buzzer) sounds w hen the C®l switch is pulled.
Emergency b raking s tops as soon as th e<®>
switch is re leas ed or the ac celerator p eda l is
presse d.
A WARNING
Eme rgen cy braking sho uld only be used i n an
emergency, when the normal brake pedal has
failed or the brake peda l is obst ructed. Using
the park ing bra ke for emergency b raking w ill
~