auxiliary battery AUDI Q3 2019 Owners Manual

Checking and Filling

The starting ability may be impaired.
If this message turns off after a little while, the
vehicle battery charged enough while driving.
If this message does not turn off, drive immedi-
ately to an authorized Audi dealer or authorized
Audi Service Facility.

ZA WARNING
When there is an electrical system malfunc-
tion, vehicle functions may not work and driv-
ing stability may be limited, which increases
the risk of an accident. Stop driving and
switch the engine off. See an authorized Audi
dealer or authorized Audi Service Facility for
assistance.


Battery
rae Le cel)
Because of the complex power supply, all work on
batteries such as disconnecting, replacing, etc.,
should only be performed by an authorized Audi
dealer or authorized Audi Service Facility > A.
Multiple batteries with different technologies
may be installed in your vehicle:
— Vehicle battery (for example, for starting the
engine, basic power supply) > page 213, Lead
battery or > page 213, Other battery types
— Auxiliary battery (for example, for recuperation
or optional equipment) > page 213, Other bat-
tery types
Not running the vehicle for long periods of
time
The battery will gradually drain if the vehicle
does not run for long periods of time. To ensure
that the vehicle can still be started, the electrical
equipment will be reduced or switched off
= page 87. Some convenience functions, such as
interior lighting or power seat adjustment, may
not be available under certain circumstances.
These convenience functions will be available
again once you switch the ignition on and start
the
engine.
Even when electrical equipment is switched off,
the equipment can still drain the battery if the
212
vehicle is not driven for long periods of time.
Deep draining results in a chemical reaction that
destroys the inside of the battery. The battery
must be charged every month to prevent this
= page 213. Contact an authorized Audi dealer or
authorized Audi Service Facility for more infor-
mation.
Winter operation
Cold weather places higher demands on the bat-
tery. This results in reduced starting ability. Have
the battery checked by an authorized Audi dealer
or authorized Audi Service Facility before cold
weather begins.

ZA\ WARNING
All work on the battery or electrical system in
your vehicle can result in injuries, chemical
burns, accidents, or burns. Because of this, all
work must be performed only by an author-
ized Audi dealer or authorized Audi Service Fa-
cility.

ZA WARNING
California Proposition 65 Warning:
— Battery posts, terminals and related acces-
sories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harms.
Wash hands after handling.
C) Note
— If the vehicle will be parked for long periods
of time, protect the battery against the cold
so that it will not be destroyed by “freezing”
= page 213, Charging the battery.
— There are electrical components under the
cargo floor behind a trim panel that warm
up during operation. To reduce the risk of
the components overheating, do not store
objects such as blankets under the cargo
floor. If the components overheat, they will
switch off temporarily. This will be indicated
by a message that will be displayed in the
instrument cluster until the temperature re-
turns to normal.

Fuses and bulbs

Some of the equipment listed in the follow-
ing tables applies only to certain model ver-
sions or certain optional equipment.

No. | Equipment

Stability Control (ESC), engine control
17
module



le of e






OVye OVOVO
Fig. 168 Left side of engine compartment: Fuse assign-
RAZ-0502
18 | Battery control module

19 | Windshield wiper control module

Anti-theft alarm system, garage door
opener
20

Automatic transmission

Engine control module

Engine start

Auxiliary heating

Engine components

Left headlight

Parking heater


Right headlight








ment
No. | Equipment
1 | Electronic Stabilization Control (ESC)
2 | Electronic Stabilization Control (ESC)
4 |Engine components, engine start
5 |Engine components, ignition coils
6 | Brake light switch
7 |Engine components
8 | Heated oxygen sensors
9 | Engine components
10 | Fuel pump
11 | Auxiliary heating, engine components










Fig. 169 Left side of cockpit: Fuse assignment

bh N Auxiliary heating, engine components No. | Equipment

13
Automatic transmission, transmission flu-
id pump
2 |Front lumbar support

Volume control

14 Engine components, ignition coils S | Gateway control module (diagnosis)

15 Horn


16

Engine components, ignition coils

sion selector lever

25 2
Steering column lock, automatic transmis-

83A012721BA
Fuses and bulbs



























No. | Equipment No. | Equipment
7 Radio receiver, parking heater, climate Right rear window regulator motor, front
control system controls 39 | passenger side door control module, right
Headlight range control, interior monitor- rear door control module
ing, ambient lighting, light switch, roof 40 | Sockets
8 | module, emergency call system, parking 41 |Passenger's side safety belt tensioner
brake, diagnostic connector, light/raih'sen- 42 |Vehicle electrical system control module
sor
= - 43 |Amplifier
9 |Steering column electronics
- 44 | All-wheel drive control module (quattro)
10 | Display
- - 4S | Driver's side seat adjustment
11 | Vehicle electrical system control module
: 47 | Rear window wiper
12 |MMI Infotainment system control module
- ; - 52 | Suspension
13 | Driver's side safety belt tensioner
- 53 | Rear window defogger
14 | Heating and A/C system blower
: 54 | Left trailer hitch light
15 | Steering column lock
55 | Trailer hitch
16 | Cell phone booster
56 | Right trailer hitch light
17
|Instrument cluster
- - 57 | Trailer hitch socket
18 | Rearview camera, peripheral cameras
19 | Vehicle opening/start (NFC) Bulbs
20 | Instrument cluster
21 | Steering column electronics BETS Ae ha tele
23 | Panoramic glass roof For your safety, we recommend that you have
24 | Vehicle electrical system control module your authorized Audi dealer replace any bulbs for
Driver side door control module, left rear YOU
25 | window regulator motor, left rear door It is becoming increasingly more and more diffi-
control module cult to replace vehicle light bulbs since in many
26 | Vehicle electrical system control module cases, other parts of the car must first be re-
27 | Vehicle electrical system control module meved before youre able to get to the bulb:
HooFmodule,vehieleeleckrical system This applies especially to the light bulbs in the
29 front of your car which you can only reach
control module :
through the engine compartment.
30 | Auxiliary battery control module
: Sheet metal and bulb holders can have sharp
31 | Luggage compartment lid .
: - - - - edges that can cause serious cuts, parts must be
ey) Rarking system, side assist, adaptive cruise correctly taken apart and then properly put back
assist, Cameta together to help prevent breakage of parts and
Passenger occupant detection system, long term damage from water that can enter
33 | front seat ventilation, headliner interior housings that have not been properly resealed.
light
; ingbrak For your safety, we recommend that you have
34 aa io tll Deeg renee your authorized Audi dealer replace any bulbs for
reverseilights you, since your dealer has the proper tools, the
A/C system components, diagnostic con- correct bulbs and the expertise.
35 |nector, instrument panel control, rearview

mirror

LED headlights*
253