Roof Shade Control
Module J394

Radio
R

CD Changer R41

Front camera for
driver assistance
systems
R242
R

Media Oriented Systems Transport

Lane Change
Assistance Control
Module J769

Digital Sound
System Control
Module J525

Battery Monitoring
Control Module
J367
Lane Change
Assistance Control
Module 2 J770

Alternator
C

Voltage
stabilizer
J532

Left Headlamp
Power Output
Stage J667

Right Headlamp
Power Output
Stage J668

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49

Exterior lighting
Xenon plus HID headlights
The Q3 comes equipped with Xenon plus headlights. The
daytime running lights and side light are provided by LEDs
via a plastic optical fiber cable. The two LEDs are mounted
on the LED module. They cannot be replaced separately.
In the event of a fault, the LED module can be replaced.

Daytime running light
and side light control unit

Turn signal
PY24W

Headlight range
control motor

Low and high beam gas
discharge lamp (D35)

Daytime running light and
side light
2 LEDs on LED module

Headlight power module

Gas discharge lamp
control unit
602_094

Light functions

Illuminants used

Power

Daytime running light
Parking light

2 LEDs with plastic optical fibers
(dimmed to approx. 25 %)

approx. 10 watts

Low beam
Cornering light
High beam

Gas discharge lamp D3S

35 watts

Turn signal

Bulb PY24W

24 watts

Fog light
(integrated in the bumper, not shown)

Bulb H11

55 watts

Daytime running light and side light
Both LEDs for the daytime running light are operated at
100% of their capacity.
The daytime running light is disabled when the turn signals
are activated.

50

Dynamic headlight range control

Convenience CAN bus

Schematic diagram of the activation mechanism for Xenon plus headlights

Xenon plus headlight
(one side of vehicle)
Discrete lines
Vehicle Electrical
System Control
Module 1 J519

Daytime running light and side light control unit > LED module
Turn signal 24 watt bulb > PY24W

Powertrain CAN bus

Ballast for gas discharge lamp > D3S

Cornering Lamp
and Headlamp
Range Control
Module J745

Power module for headlights
Private bus (sub-bus)

Discrete
lines

Left Rear Level
Control System
Sensor G76

Left Front Level
Control System
Sensor G78

Headlight range control servomotor
Dynamic cornering light servomotor

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51

Tail lights
The Q3 for the North American market will be equipped
with LED tail lights. Some of the lights will be installed in
tailgate while additional lights will be installed in the lower
bumper cover.

The tail lights are activated by Vehicle Electrical System
Control Module 1 J519. The tail lights in the tailgate are
disabled when it is in the raised position. The tail lights in
the lower bumper spoiler are then illuminated.
None of the component parts of the LED tail lights in the
tailgate can be replaced.

LED tail light

Turn signal

Tail light

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Brake light

Tail light

Light functions

Illuminants used

Activation mechanism

Power

Tail light

2 LEDs with plastic optical fibres

100%

approx. 2 watts

Brake light

18 red LEDs

100%

approx. 3.5 watts

52

Additional tail lights
Additional tail lights in the Audi Q3 are needed because the
tail lights also swing up when the tailgate is opened. They
are integrated in the bumper and accommodate the back-up
light and rear tail light functions, as well as the turn signal
and the tail/brake light when the tailgate is open.

Turn signal

The additional tail lights can be removed to replace the
bulbs from the rear bumper. A close-out cover which provides access to the light retaining bolts is integrated in the
bumper cover for this purpose.

Tail/brake light

602_119

Reflector

Back-up light

Rear fog light

Light functions

Illuminants used

Activation mechanism

Power

Tail light
Brake light1)

Bulb W16W

dimmed to approx. 30 %
100 %

16 watts

Turn signal1)

Bulb W16W

100 %

16 watts

Rear fog light

Bulb W16W

100 %

16 watts

Back-up light

Bulb W16W

100 %

16 watts

1)

1)

active only when tailgate is open
53

Additional tail light activation
The tail lights in the tailgate are deactivated when it is
raised. Their functions are taken over by the addtional
tail lights in the lower bumper cover.
To reliably detect an open tailgate, Rear Lid Alarm Switch
F123 and Rear Lid -closed- Sensor G525 are evaluated.
F123 has two microswitches in the tailgate lock. G525 is
a Hall sensor integrated in the rear lock plate cover.

J519 not only evaluates the operating states of both
switches, but also the time between the signals generated
by both switches. If the time lag is too long between both
signals when closing the tailgate, the additional tail lights
are not deactivated for safety reasons.

Schematic diagram of the circuit
Rear Lid Alarm Switch F123
Full lock
Prelock

Terminal 31

Vehicle Electrical System
Control Module 1 J519

602_120
Rear Lid -closed- Sensor 1 G525

High mounted brake light
The high mounted brake light is integrated in the rear
spoiler. It has a total of 48 LEDs. The component parts
of the light cannot be replaced. If a fault occurs, the
complete LED module must be replaced after first
removing the rear spoiler.

602_122

License plate lights
The license plate lights of the Q3 are also LED units.
Each light unit has two LEDs. They are activated by J519.

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54

Audi drive select
The Q3 can be optionally equipped with Audi drive select.
The customer can chose between three operating modes:
comfort, auto and dynamic.

Audi drive select can be set using a button on the
instrument panel or through the MMI controls under the
CAR menu. The current operating mode is shown on the
MMI display.

Audi drive select

Handbook

Audi
drive select:
dynamic

dynamic

efficiency
comfort

auto

Car Systems
22315

km

D4

142.5
European version shown

+22.5°C

602_136

602_135

Controllable systems

The system is operated
using the buttons in the
center console

Operation via CAR menu in
Radio Media Center (RMC) or MMI

Accelerator/engine
Variable
characteristic

Servotronic
Variable
steering torque

602_137

55

Functional characteristics
Engine
comfort

auto

dynamic

D

S

D

S

D

S

Power/
torque

normal

normal

normal

normal

normal

normal

Load change

balanced

balanced

balanced

balanced

sporty

sporty

Engine

Drive-independent vehicle systems
comfort

auto

dynamic

comfortable

balanced

sporty

Steering

56

Climate control
Engergy efficiency
The fully automatic two-zone air conditioning system
regulates nominal temperature, air distribution and air
flow rate depending on sunlight intensity, interior and
exterior temperature. It also has a humidity sensor. A dew
point sensor and a windshield temperature sensor are
integrated in the base of the mirror to detect impending
fogging and to enhance climate comfort through passenger
compartment humidity management.

Equipment

Automatic climate control
system

Climate zones

Two-zone system

Interior filtering

Dust and pollen filter
without activated charcoal

Manual air circulation

yes

Automatic air circulation

yes

Sunlight photosensor

yes

Air quality sensor

yes

Cabin humidity sensors

yes

Seat heating levels

3

Glove compartment cooling
system

yes

Climatronic Control Module J255
In addition to controlling all functions of the climate
control system, J255 also houses the controls for the
heated front seats. They can be activated on three output
levels.
J255 receives information from the following sensors::

• Air Quality Sensor G238
• Sunlight Photo Sensor G107
• Humidity Sensor G355
Air from the passenger compartment is drawn into the
interior temperature sensor by Interior Temperature Sensor
Fan V42. If repairs are needed, V42 can be removed and
replaced separately.

Climatronic Control Module J255

602_038

Interior Temperature Sensor Fan
V42

The control module is held in place by clips and can be
easily removed with special tools.

Humidity management with combined rain, light and humidity sensor
The Q3 uses Humidity Sensor G355 to measure the
passenger compartment relative humidity and the
windshield temperature.

G397

G355

In vehicles with automatic light control and Climatronic,
G397 and G355 are combined in a single unit.

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!