2017 AUDI A4 engine

Warm and cold
Warm and cold
Climate control system
Description
The climate control system warms, cools and re­ moves humidity from the air in the vehicle interi­
or. It is the most effective when the windows and
sunroof * are closed. If there is a bui ld-up of heat
inside the vehicle, ventilation can he lp to speed
up the cooling process.
I n all heating mode f unctions except for
defrost ,
the blower only switches to a higher speed once
the engine coolant has reached a sufficient tem­
perature .
Pollutant filt er
The po llutant filter removes poll utants such as
dust and pollen from the a ir .
Ke y recognit ion
The climate control settings are automatically
stored and assigned to the remote contro l key
that is in use .
@) For the sake of the environment
-If you wo uld like to reduce fuel consump­
tion, switch the ai r cond itioning off. This
will a lso reduce em issions.
68
- In veh icles with a diesel engine, you can
switch the auxiliary heater off in the Info­
tainment system.
(D Tips
- To prevent interference with the heating
and cooling output and to prevent the win­
dows from fogging over, the a ir intake in
front of the windshield must be free of ice,
snow or leaves.
- Condensation from the cooling system can dr ip and form a puddle of water under the
vehicle . This is normal and does not mean
there is a leak .
- If you see that, for example, the seat heat­
ing* or rear w indow defogger are not heat­
ing, the energy management system may
have switched them off temporari ly . These
systems a re available again as soon as the
energy supply has been resto red.

Warm and cold
system operates most efficiently in eco cooling
mode.
A/C MAX cooling mode*
You can switch the maximum cool ing mode on or
off using the rocker switch@. Th e air is not
coo led and humidity is not removed when cooling
mode is switched off. This can cause fog on the
windows. Cooling mode switches off automati­
cally when the outside temperature is below
zero. When the cooling mode is switched on, the
vehicle interior is cooled as quickly as possible
and dehumidified .
c:E) Recirculation mode
In recirculation mode, the air inside the vehicle is
circu lated and filtered. This prevents the unfil­
tered air outside the vehicle from entering the
vehicle interior. We recommend switching recir­
culation mode on when dr iv ing through a tunnel
or when s itting in traffic
c::> ,&.
Using the button, recirculation mode is~ using
the button. You can also switch the recirculation
mode off by pressing the knob
(D :1E or the but ­
ton.
AUTO
Automatic mode
Automatic mode ma intains a constant tempera­
ture inside the vehicle. Air temperature, airflow
and a ir distribution are controlled automatically .
You can switch automatic mode on or off by
pressing the knob@.
Temperature
You can adjust the temperature between 60°F
( + 16°() and 84°F ( +28°() by turn ing the knob
(D . If outside of this range, LO or HI will appear
in the climate control system d isplay. In both
sett ings, the climate control runs constantly at
the maximum cooling or heating level. The tem­
pe rat ure is not regulated.
The temperature can be adjusted in the rear us­
ing the rear contro ls
c::> fig. 74 .
86'~ Blower
You can adjust the vo lume of air generated by the
blower to your preference using the rocker switch
70
@ . To have the blower regulated automatica lly,
press the knob
(D.
Air distribution
You can use the rocker sw itches @to adjust the
ven ts where the air w ill flow o ut of. P ress the
rocker switches @repeatedly until the desired
air distribution setting is disp layed in the climate
contro l system controls. To have the air distribu­
tion regulated automatically, press the knob
(D.
-Jit-OPEN/CLOSE the wide vent
You can open and close the wide vent in the cock­
pit using the rocker switch ®·
JI 8M Seat heating and ventilation*
If you press the button JI~ the seat heating/
ventilat ion is switched on at the highest leve l (3).
The LEDs indicate the temperature level. To re­
duce the temperature, press the button again. To
switch the seat heating/ventilation off, press the
button repeatedly unti l the LED turns off .
3%i Defrosting
The windshield and side w indows are defrosted
o r cleared of condensation as quick ly as poss ible.
The maxim um amount of air flows mainly from
the vents below the windshield . Recirculation
mode switches off. The temperature should be
set at + 72°F (22°() or higher. The temperature is
controlled automatically.
Defrost is sw itched on and off~ using the but­
ton. You can switch the function off by pressing
the knob
(D .
Applies to vehicles with windsh ield heating*:
when outside temperatures are low, the wind ­
shield heating is automatically switched on . If
you would like to switch the windshield defroster
on manually, press the button.~-The LED in the
button blinks.
Qii) REAR Rear window defogger
Press the button to switch the rear window de­
fogger !! on. It on ly operates when the engine is
running. It switches off automatically after 10 to
20 minutes, depending on the outs ide tempera­
ture.

Driving
General information
Breaking in
A new vehicle must be broken in, and the break­
in distance should be 1,000 mi les ( 1,500 km). Do
not drive at speeds that w ill exceed
2/3 of the
maximum permitted engine speed (RPM) for the
first 600 miles (1,000 km) , and avoid full accel­
eration during this period . You may gradually
start increasing the RPM and the speed between
600 miles (1,000 km) and 1,000 miles (1,500 km).
During the first hours of use, the engine has a
higher internal friction than later on when all
moving parts have settled into place with each
other.
How the vehicle is driven during the first 1,000
miles (1,500 km) also affects the engine quality.
Drive at moderate engine speeds after the initial
break-in per iod, part icularly when running a cold
engine . This will reduce engine wear and improve
the mileage .
Do not drive at too
low of an engine speed (RPM).
Shift down when the engine no longer runs
"smoothly" . Extremely high engine speeds are
automatically reduced.
Avoid damaging the vehicle
When you are driving on poor roads, or over
curbs, steep ramps, etc., make certain that low­
lying parts such as spoilers and exhaust system
parts do not bottom out and get damaged.
This is especially true for vehicles with low-slung
chassis (sports chassis)* and fully loaded
vehicles.
Driving through water on roads
Note the following to reduce the risk of vehicle
damage when driving through water, for examp le
<( on flooded roads : a, .... N
~ -The wate r must not be any higher than the bot-....
g tom of the vehicle body .
3 a,
Driving
- Do not drive faster than walking speed.
A WARNING
After driv ing through water or mud, the effec­
tiveness of the brakes may be reduced due to moisture on the brake rotors and brake pads.
A few careful brake applications should dry
off the brakes .
(D Note
-Vehicle components such as the engine,
transmission, suspens ion or electrical sys­
tem can be severely damaged by driving
through water .
- Always switch the Start/Stop system* off
when driving through water
r:';>page 78.
(D Tips
- Determine the depth before driving through
water.
- Do not stop the vehicle, 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 drive
through safely.
- Avoid driving through salt water, because
this can cause corrosion .
Economical and environmentally-friendly
dr iving
T he amount of fuel consumpt ion, the environ ­
mental impact and the wear to the engine,
brakes and tires depends mostly on your driving
style. With an anticipatory and economic driving
style, fuel consumption can be reduced by ap­
proximately 10-15%. The following tips will help
you conserve the environment and your money at
the same time .
Anticipatory driving
A vehicle uses the most fuel when accelerating.
When you drive with anticipation, you do not
need to brake as often and so you accelerate less .
When possible, let your vehicle coast with a
gear
engaged,
for example, when you notice that the ..,.
73

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