2018 AUDI A3 SEDAN battery

Drivin g
~ Brake the vehicle to a stop . The engine stops
shortly before the vehicle comes to a stop or if
the ve hicle is stationary
1>. Keep your foot on
the brake pedal. The
D] ; D] ind icator light ap ­
pears in the display. The need le in the tachome­
ter also moves into the
READ Y position .
~ The engine starts again when you take your
foot off the brake pedal. The ind icator light
tu rns off.
Add ition al informa tion
The engine stops in the "P", "N" and "D" selector
lever positions .
If you select the "R" selector lever position during
a Stop phase, the engine will start again.
Shift to "P" quickly to prevent the engine from
starting unintentiona lly when shifting t hrough
IIRII.
You can determ ine for you rself 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 light ly 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
harder, the eng ine will switch off .
(D Tips
-Press the brake pedal during a Stop phase
to keep the veh icle from roll ing.
- The ignition will turn off if you press the
I STAR T ENGINE ST OP ! button* during a
stop phase . The needle in the tachometer
moves into the
OFF pos it ion .
General information
App lies to: ve hicles w ith Sta rt/Stop system
Engine does not switch off
Before and during each stop phase, the system
checks if certa in cond itions have been met. If the
fjj i ndicato r light appears in the instr ument clus­
t er d isp lay, the engine w ill no t be s topped, for
examp le in the fo llowing situations:
1) Ma rket -spe cific
80
- T he engine has not reached the minim um re­
quired temperature for Start/Stop mode.
- The interior temperature selected by the cli-
mate control system* has not been reached.
- The ou tside tempe rat ure is extremely high/low.
- The windsh ield is being
defrosted® .
-The parking system* is switched 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 automaticall y restarts
The standard Start/Stop mode w ill be canceled
d u ring a stop p hase in the following situat ions.
The eng ine res tarts witho ut any act ion by the
drive r.
- The vehicle ro lls, for example while on a slope .
- The interior temperature differs from the tem -
peratu re selected in the A/C system .
- The windsh ield is being
defrosted® .
-The brake pedal is pressed several times in a
row.
- The vehicle battery charge level is too low.
- Power consumption is hig h.
The eng ine ca n tur n off aga in when the cond i­
t ions for Sta rt/S top mode a re met
l ).
Ignition is switched off automaticall y
To prevent the vehicle battery from dra ining, the
i gnition will sw itch off
a ut omaticall y under the
fo llow ing cond it ions:
- The Start/Stop system has stopped the engine .
- The vehicle is stationary.
- You exited the vehicle .
In this case, the activated low beam is rep laced
by the pa rking light . The parking lights wi ll
switch off after approximately 30 minutes or
when you lock the veh icle.
.,.

e-tron
e-tron Plug-in hybrid drive
Introduction
Applies to: vehicles with plug-in hybrid drive
General information
The plug- in hybrid drive is a drive concept that al­
lows you to choose between driving w ith the elec­
tr ic moto r, with the gaso lin e eng ine o r us ing a
comb inat io n of both.
All work done on the high-voltage system must
only be performed by certif ied h igh-voltage tech­
n icians at autho rized Aud i dea le rs or authorized
Aud i Serv ice Facilities in accordance with A udi
gu idelines.
The high-voltage system is composed of the fol­ low ing high-voltage components: the h igh -volt­
age battery, the powe r electron ics, the e lectr ic
motor, the high-voltage A/C compressor, the
high-vo ltage heater, the charging system and
charging port as well as the orange high -vo ltage
wiring.
The pedal referred to in this sect ion of the Own­
er's Manua l is t he equivalent of the acce lerator
pedal (gas peda l) in a standard vehicle.
High-voltage battery
The high -voltage battery is located on the veh icle
underbody in front of t he rear ax le and does not
require any maintenance from t he d river. Addi ­
tional information about the high-vo ltage bat ­
tery can be found
under ¢ page 106.
A WARNING
The voltage in the h igh-vo ltage system is life­
threaten ing. Touching a damaged high-volt­
age component can result in a fatal e lectr ic
shock. The components in the high-voltage
system are ma rked w ith a warning label wh ich
wa rns against t he h igh-vo ltage.
- The voltage level in the high-voltage system
is still dangerous and potent ially life-threat­
ening when t he ignit ion is switched off.
- Never perform work on orange high-voltage
cables or on high-voltage components. Only
92
authorized repair facilities that are certified may perform work on the high-vo ltage sys­
tem.
- Never damage, alter or remove the orange
high-voltage cable or disconnect it from the
high-voltage system.
- Never perform any work using cutting, shap­ ing or sharp-edged too ls or heat sources
near the h igh-vo ltage system and hig h-volt­
age cables .
- Aud i regulat ions must be followed during
all work performed on the high-voltage sys­
tem and h igh-vo ltage components .
- When working on t he h igh-voltage system
and h igh-voltage compone nts, make sure
the remote cont rol key is kept far enough
away from the vehicle so that there is no
r is k of t he ignit io n be ing inadve rtent ly
sw itched on.
- Gases t hat escape from the high-vo ltage
b attery can be poisono us or flammab le.
- Damage to the h igh-voltage battery could
cause t he hi gh-vo ltage battery to lea k im­
mediately or in the fut ure, and poisono us or
flammab le gases co uld escape . Do not in ­
ha le the gases!
- Do not expose yourse lf to any leaking fluids
and do not come into contact with them .
- The h igh -voltage battery e lec troly te flui d is
caustic. If electro lyte fluid comes into con ­
tact with the skin, flus h the affected area
for at least 15 minutes with clean water.
Then wash the affected area with soap.
H ave the affected area examined by a med i­
cal professional.
- In the event of a technica l emergency, in­
form the responders that the vehicle is
equ ipped with a high-voltage battery.
A WARNING
Neve r leave the vehicle unattended when in
drive ready mode
¢ page 94 with a gea r en­
gaged . T he veh icle can start mov ing ("creep­
i ng") even if the gaso line engine is swi tched
off, since the e lectr ic motor is still ope ra ting.
This may ca use coll is ions and severe or fata l
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u. 00 ... N l'­ N ... 0 N > 00
injuries. When the vehicle enters drive ready
mode, the status message
e-no"' ~... ap­
pears briefly in the instrument cluster display
and the needle in the power meter points to
READY ¢ page 9 5.
-Make sure that the selector lever is in the P
position and the ignition is switched off
when leaving the vehicle.
@ Note
-The high-voltage system can be damaged if
the vehicle underbody comes into contact
with the ground . Immediately drive your ve­
hicle to an authorized repair facility and
have it inspected.
- The electric drive motor can become very
hot during operation . Do not stop the vehi­
cle if there is oil, fuel residue or other flam­
mable substances under or next to the vehi­
cle.
Special considerations for the high-voltage
battery
Applies to: vehicles with plug-in hybrid drive
Please first read and note the introductory infor­
mation and heed the warnings
¢page 92.
All batteries age with use and over time. There
are things you should know about the care of the
high voltage battery that will help it keep giving
you good service and reliability over time. Please
read and keep the following information in mind
while you enjoy the performance and economy of
your vehicle.
- Be sure to charge the high voltage battery be­
fore leaving the vehicle parked and unused for a longer period of time. Ideally the high-voltage
battery should have a charge level between
40 % and 60 % when parked for a long t ime .
- If the battery charge level is below 3 %, never
park the vehicle for more than 21 days without
charging the high-voltage battery. Should you
have to park the vehicle for a long time, make
sure that the charge level is sufficient to help
prevent the battery from aging prematurely.
- Frequent and consecutive charging of the high­
voltage battery when the charge level is above
e-tron
98 % can also decrease the capacity of the
high-voltage battery. Make sure the charge lev ­
el is be low 98 % when you start the charging
process.
- Should the vehicle be parked for longer than
2 days at temperatures below -13 °F ( -25 °C),
the high-voltage battery could free ze and not
be able to provide energy to the electric motor.
The battery will start working again, once it
warms up . The battery can be warmed up when
the outside temperature rises or when the vehi­
cle is garaged appropriately. The battery will al­
so warm up when being used (sw itching on the
air conditioner, the heater or by driving the ve­
hicle) . Should you have to park your vehicle at
very low temperatures for longer than 1 day,
make sure that the high-voltage battery does
not freeze by parking the vehicle in a garage
that is heated or protected from the outside
temperature.
- The high-voltage battery can be damaged and
the capacity can be decreased when the vehicle
is parked for longer than 24 hours when the
ambient temperature is higher than 118 °F
(48 °C). Always make sure that the h igh-volt­
age battery is not exposed to temperatures
above 118 °F (48 °C) for a long time.
- Never park the veh icle in areas that are lik ely to
be flooded, such as beaches or river banks, and
never drive the vehicle in WA TER, on flooded
roads or through water that is higher than the
bottom of the vehicle body. The high-voltage
battery, along with other vehicle components,
can be damaged severely if the high-voltage battery is exposed to open water especially for
a longer time. However, you can drive through
water on roads under certain conditions
~ page 72.
Failure to heed any of these requirements can
age the battery prematurely and lead to a perma­
nent decrease of the high-vo ltage battery's ca­
pacity.
(D Tips
Always make sure that the high-voltage bat­
tery is not exposed to extremely low and high
temperatures as well as to water espec ially
for a longer time. Failure to protect and care
93

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for the high voltage battery can lead to seri­
ous damage and/or a decrease of the capacity
void coverage under the New Vehicle Limited
Warranty.
Starting/driving the vehicle
A pp lies to: ve hicles w ith plug- in hybrid drive
The vehicle is started and stopped with the
IS TAR T ENGINE STOP I button . Please also read
the information under
Q page 76, Starting the
engine.
Establishing drive ready mode
See Q .& in Introduction on page 92.
Requirement: a charging cable must not be con­
nected to the vehicle
Qpage 115 and the selec ­
tor lever must be in the "P" or
"N" position.
- Press the brake peda l.
- Press th e
I START ENGINE STOPI button .
When the veh icle enters drive ready mode, the
status message
e-tron READY appears briefly in
the instrument cluster display and the needle in
the powe r meter points to
READY Q page 95.
Driving
The vehicle starts with the electr ic motor after
establishing the dr ive ready mode and if the con­
ditions for electric drive mode have been met
Qpage98.
The cond itions to drive are essentially the same
as for the automat ic transmission
Q page 83 .
You and your passengers should anticipate the
possibility of a sporty acceleration.
Ending drive ready mode
- Place the selector lever in the P position.
- Switch the ign ition off with the
I START ENGINE STOP ! button.
Vehicle sound1>
The vehicle generates an electronic engine sound
so that you r vehicle can be heard from the out­
side when in electr ic drive mode. The veh icle
l) Not available in all markets.
94
sound automatically fades out at higher speeds
when the sounds from the tires and wind start in­
creasing .
Switching the ignition on/off
You can switch the ignition on without establish­
in g drive ready mode.
- To switch the ign ition on or off, press the
!START ENGINE STOPI button. Do not press the
brake pedal while do ing this.
When the ignition is switched on, the needle
stays pointed at
OFF CD Q page 95, fig. 98 or
OFF is displayed CD~ page 95, fig. 98.
No indicator lights stay turned on when the igni­
tion is switched off.
Ignition is switched off automatically
To prevent the vehicle battery from draining, the
i gnition will switch off automatically under the
follow ing cond it ions:
- The vehicle has already been driven.
- The vehicle is stationary.
- The gasoline engine is not runn ing.
- The driver's door is opened.
- The driver's safety belt is unbuckled .
- The brake pedal is not pressed.
In this case, the activated low beam is replaced
by the parking light. The message
Side marker
lights will switch off automatically in 30 mi­
nutes. See owner 's manual
appears in the instru­
ment cluster display . The parking lights will
switch off after approximately 30 minutes or
when you lock the veh icle.
If the gasoline engine was not stopped, the mo­
tor continues running and the ignition does not
automat ically switch off
Q & .
A WARNING
To reduce the risk of poisoning, never allow
the engine to run in confined spaces .
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For additional information, see ¢ page 17, Trip
computer (Audi virtual cockpit).
~ Applies to: vehicles with analog instrument
cluster: Open the
Tachometer display by turn­
ing the left thumbwheel on the multifunction
steering wheel.
When opening the driver's door, the charge level is shown in the instrument cluster when the igni­
tion is switched on, or the charge level and the
remaining charge time for the high -voltage bat ­
tery is displayed when charging .
The power meter gives feedback about the partic­ ular accelerator pedal position and shows the
current demand
(%) for electricity or fuel regard­
less of which engine is active.
An economical driving and recuperation range is
shown in green
¢ page 99, Energy recovery (re­
cuperation) .
A driving range that is not economi­
cal is shown in orange .
(D Vehicle not drive ready (OFF)
@ Recuperation (CHARGE)
@ Vehicle ready to drive (READY) or
coasting
© Efficient driving with electric motor
and/or gasoline engine (EFFICIEN­
CY)
® Economic driving while the electric
motor or gasoline engine is in the
partial power range
@ Driving in full power range
0 100% output
@ BOOST: the electric motor supports
the combustion engine
® High-voltage battery charge level
@ EV mode: active a=,v, standby, a=,v
or currently unavailable. ~v
@ Speed limit for electric driving in EV
mode (80 mph/ 130 km/h)
Indicator lights and messages
Applies to: vehicles with plug -in hybr id drive
Also note the indicator lights in¢ page 20.
The gasoline engine is active when the II'§] indica­
tor light turns on.
96
•• Drive system: system fault! Safely park
vehicle
There is a malfunction in the plug-in hybrid sys­
tem. The brake booster and the power steering
may stop working. Stop the vehicle immediately
or as soon as possible. Park the vehicle in a safe place outdoors that is not near buildings, roof
overhangs, carports or similar structures. Switch
the ignition off. Have the problem corrected by
an authorized Audi dealer or authorized Audi
Service Facility.
•• Electric drive: overheated! Safely stop
vehicle and check coolant
The coolant level is too low or the coolant tem­
perature is too high.
Stop the vehicle in the outdoors as soon as it is
safely possible. Switch the ignition off.
Read the important safety
precautions ¢.& in
Coolant on page 103
and check the coolant level
¢page 102.
If the coolant level is OK, the malfunction may be
caused by the system overheating. Let the vehi­
cle's electric drive system cool down for some
time .
If the message turns off after cooling down and
switching the ignition back on, you can continue
driving. Contact an authorized Audi dealer or au­
thorized Audi Service Facility immediately to have
the malfunction corrected.
If the indicator light stays on, contact an author­
ized Audi dealer or authorized Audi Service Facili­
ty.
lltll Drive system: system fault! Please con­
tact workshop
There is a malfunction in the plug-in hybrid sys­
tem . Drive to an authorized Audi dealer or au­
thorized Audi Service Facility immediately to have
the malfunction corrected.
1/1111 Drive system: system fault! Restart not
possible. Please contact workshop
There is a malfunction in the plug-in hybrid sys­
tem. Do not open the hood. Drive to an author- ized Audi dealer or authorized Audi Service
.,,_

LL co ..... N
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Faci lity immedi ately to have t he m alfunc tion cor ­
rected .
IIJII Battery temperature too low . Vehicle
cannot be started. See owner's manual
Th e outside tempe rature is too low . The vehicle
can no longe r st art at tempe ra tur es below - 18 °F
(- 28 °C). Con ta ct an a utho riz e d Audi d ealer o r au­
thor ized A udi Se rvice Fac ility.
POWER LIMIT Warning! Limited performance
If t he indicator lig ht turns on and th is message
appears , th ere may be a n engine co ntro l ma l­
f u nction. The
[3B* in d icator light in t he instr u­
men t clus ter also tur ns on . The engine ou tput is
r educed . Dr ive to a n au thor ized Audi dealer or
a uthor ized Audi Se rvice Facili ty i mme diate ly to
ha ve the m alfunct ion co rre cted.
II e-tron mode: EV currently unavailable
This message appea rs whe n the 1.,,..1 button is
p ressed and the con ditions for elect ric d rive
mode a re not met.
Ill Vehicle sound: malfunction! Pedestrians
cannot hear vehicle . Please contact Service
The vehicle sou nd is no longer f unctio ning. D rive
e xtremely care fully, since ot he rs may not hea r
your veh icle. Dr ive to an author ized Audi dealer
or author ized Audi Se rvice Facility immed iate ly to
have the ma lf u nction corrected .
Range display
Applies to: ve hicles with plug-in hybrid drive
Fig. 99 Instr ume nt cluste r: ra nge disp lay
The range can be disp layed in the trip computer .
You can access t he range disp lay w ith the multi­
fu nction steeri ng wheel buttons
c:;> page 13 , Mui-
e-tron
ti function s teeri ng whee l plus or r:::;> page 1 6, M ul­
tifunction steering wheel.
D epen ding on t he sele cte d plug -in hy brid mo de,
t he disp la y g ives the foll owing informa tion:
(D Remaini ng e lec tric m otor range or comb ined
total range
@ Remaini ng gasoline eng ine range
® R emaini ng e lectr ic moto r ra nge
(D Tips
The va lues given are b ase d on t he lates t con­
sum ption va lues .
Range and statistics
Applies to: vehicles with plug-in hybrid drive
Fig. 100 In fotainmen t system : e -tro n range mo nitor
Opening the range monitor
The range monitor in the Infotainment system
shows the relat ions hip between ene rgy co nsum­
ers and elect ric range
c:;> fig. 100 . The three larg­
est ene rgy consu mers w ill be l ist ed in sequent ia l
o rder. Sw itching off the cons umers increases the
elect ric range .
.. Select in the Infotai nment system: I MENU ! but­
t o n
> Vehicle > left con trol button > Range &
statist ics > Range .
Opening the statistics
The stat istics in the In fotainment system show
t h e d ista nces dr iven without emissions (electric)
and with fuel. The values are taken from the
sho rt-term memory and long-te rm m emory of
the on-board comp ute r.
.. Select in the Infotai nment system: I MENU ! but­
ton
> Vehicle > left con trol b utton > Range &
statistics > e-tron statistics . IJ,,
97

e-tr on
~ To switch between the short -term and long ­
term memory, turn the left thumbwhee l on the
multifunction steering whee l.
Setting plug-in hybrid drive modes
Applies to: vehicles with plug-in hybrid drive
You con select between one electric mode and
two hybrid modes .
Fig . 1 01 Center console: but ton c:=!i'
~ Press the 14• 1 button repeatedly until the de­
s ired dr ive mode is d isplayed in the instrument
cluster/Infota inment system display .
You can change modes when the vehicle is sta ­
tionary or while driving . If the veh icle operat ing
conditions will not allow you to set the mode
manually , the last act ive mode is se lected.
The active mode is displayed the first t ime the
14' 1
button is pressed .
,cf,V e-tron mod e: E V -EV mode is electric driv ing
only . EV mode is active at the beginning of every
tr ip depend ing on the operating condition of the
veh icle . T he LED in the
14"1 button turns on .
The. indicator light also appea rs in the instru­
ment cluste r. T he gasoline eng ine rema ins
t urned off, as long as the cond it io n s for electr ic
driving are
met ¢ page 98, Conditions for elec ­
tric driving.
~ e- tron m ode : H ybrid -the electr ic motor and
t he gasoline engine wo rk efficien tly toge ther in
hybrid mode . The high -vo ltage battery will be
used to the fullest extent when t his mode is
switched on. This mode is best suited for long
d istances .
.. ~ e -t ro n mode: Batt ery Hold -the electric mo­
tor and the gasoline engine work together in Bat -
98
tery Hold mode, so that the high -voltage battery
charge level is maintained as much as possib le .
(D Tips
- Applies to: Battery Hold mode: th e h igh ­
vo ltage battery charge level can sti ll de­
crease depending on the driving behavior.
- If you select the sport driving mode "S"
when in EV mode, the Battery Ho ld mode is
automatically selected.
- If the
14"1 ¢ page 98 button is pressed w hile
in sport driving mode "S", the transmission
switches automatica lly to normal mode "D".
- When temperatures are below approxi ­
mate ly
14 °F ( -10 °C), the vehicle heat out­
put in EV mode is reduced in order to attain
higher ranges. If the windows fog up or a
hig her heat output is desired, switch on the
Hybrid or Battery Hold mode .
Conditions for electric driving
Applies to: vehicles with plug-in hybrid drive
The EV mode ca n only be switched o n if the fol­
l ow ing condit ions are met:
- The charge level of the high-voltage battery
must be sufficient .
- The temperature of the high-voltage battery
must be adequate (outside temperatures not
below approx imately
14°F / -10°( and not
above
1 04°F / 40°C)
- The speed must not be h igher than approxi -
mate ly
80 mph (130 km/h) .
- Kick -down must not be activated .
- The sport drive mode "S " must not be selected .
EV mode is switched off if one or more of the
conditions are not met. The gasoline engine wi ll
start automatically. The
l!'§'J indi cator light turns
on as a message in the instrument cluster. The
LED in the
14" 1 butto n and the . indicator light
turn off .
E lectric drive mode will not contin ue automati -
cally. React ivate the EV
mode ¢ page 98. Ill-

u. 00 ... N l'­ N ... 0 N > 00
(D Tips
It may be necessary for the gasoline engine to
r u n longer for technical reasons, such as
when condensation accumu lates in the en­
gine. Driving exclusively in electric mode is
not possible in this phase.
Plug-in hybrid functions
Applies to: vehicles with plug-in hybrid drive
The funct ions descr ibed below act ivate automati­
cally depending on the driv ing sty le.
Full-throttle acceleration (boost)
The boost funct ion is act ivated by pressing the
accelerator pedal farther down (kick-down). The
vehicle is powered by both the gasoline engine
and the electric motor when in full accelerat io n.
Boost is only availab le for a sho rt time , because it
uses a large amou nt of energy. Ava ilability de­
pends on the high-voltage battery charge level.
Coasting
The gasoline engine switches off and disengages
at speeds up to approximate ly 112 mph
(180 km/h) if the accelerator pedal is not p ress-
Tips for efficient driving
Applies to: vehicles with plug-in hybrid drive
Driving situations Conditions
e-tron
ed and the "D" position is selected. Driving con­
servative ly like this can reduce fuel consumption .
Energy recovery (recuperation)
When braking, t he e lectr ic moto r will act as a
generato r creat ing elect ric energy that is then
stored in the hig h-voltage battery. This also o c­
curs when the vehicle is coasting or driving down ­
hill .
If the brakes are applied early and evenly, the
electric motor w ill brake the vehicle @
¢
page 95, fig. 98. By doing this, a large amount
of the kinetic energy is recovered and may be
stored as electric energy in the high-voltage bat­
tery . The conventional brakes are also activated
when the brakes are pressed very hard.
The strength of recuperation can depend on the
following factors:
- If you are in tiptronic mode ¢
page 88. Or
- I f the sport dr iv ing mode "S" was se lected.
The energy recovery is shown in the energy flow
display in the instrument cluster display/Info­
ta inment system
¢ page 100.
Vehicle behavior
-Cautious driving and reserved ac- The kinetic energy of the ve hicle is used to
ce leration . move the vehicle.
Constant driving and
-Re lease the accelerator pedal The gasoline engine turns off automati-
coasting (gliding)
early and entirely. cally and disengages when you release the
accelerator pedal completely . The veh icle
glides w ithout being propelled .
-Brake early and evenly with short The electric motor brakes the vehicle. By
E nergy recove ry ( re- pedal movements.
doing this, a large amount of the kinetic
energy is recovered and may be stored in
cu perat ion)
the high-voltage battery in the form of
electr ic energy .
Driv ing in city traffic
-Accelerate moderately and brake The kinetic energy o f the ve hicle is used to
early and evenly move the vehicle.
99
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