Audi A4. Body repair manual - part 75
Radio systems
"Concert" radio with BOSE sound system
(sedan)
1 - Rear window antenna with antenna amplifier
2 - Telephone speaker
3 - BOSE amplifier in luggage compartment (left-rear)
4 - Bass speaker in front door trim (bottom)
5 - Mid-range/treble speaker in front door trim (top)
6 - Broad band speaker in rear door trim
7 - Bass speaker in parcel shelf
8 - CD changer (optional) in luggage compartment (left-rear)
"Concert" radio with BOSE sound system (Avant)
1 - Roof antenna with antenna amplifier
2 - Telephone speaker
3 - BOSE amplifier combined with bass speaker (subwoofer) in cargo
area (left-rear) under side trim
4 - Bass speaker in front door trim (bottom)
5 - Mid-range/treble speaker in front door trim (top)
6 - Broad band speaker in rear door trim
7 - CD changer (optional) in cargo area (left-rear) under storage
compartment
Radio systems
Multi-pin connectors I, II, III, IV (on back of
radio), terminal assignments
Note:
Terminals which are not listed are
vacant/unassigned.
20-pin connector I
1 - Line out, left-rear
2 - Line out, right-rear
3 - Low frequency Ground (GND)
4 - Line out, left-front
5 - Line out, right-front
6 - Switched positive supply (B+) for BOSE amplifier
Radio systems
8 - Clock signal
9 - Data signal
10 - Enable signal
13 - Bus data in (CD changer)
14 - Bus data out (CD changer)
15 - Clock (CD changer)
16 - Continuous positive supply (B+)
17 - Switched positive supply (B+) (CD changer)
18 - Low frequency-Ground (GND) (CD changer)
19 - Signal wire left channel (CD low frequency-L)
20 - Signal wire right channel (CD low frequency-R)
8-pin connector II (brown)
5 - Hands-free speaker (+)
6 - Hands-free speaker (-)
Radio systems
8-pin connector III (black)
1 - Vehicle speed sensor (Gala)
3 - K-Diagnosis
4 - Terminal 86s connection for ignition key switched on and off (S-
contact)
6 - Illumination (terminal 58d)
7 - Terminal 30
8 - Ground (GND) (terminal 31)
10-pin connector IV (red)
1 - Telephone mute switch
3 - Telephone (low frequency +)
4 - Telephone (low frequency -)
5 - Navigation (low frequency +) (not applicable US/Canada)
6 - Navigation (low frequency -) (not applicable US/Canada)
7 - Navigation control line not (not applicable US/Canada)
9 - Display illumination (terminal 58d)
10 - CD Ground (GND)
Radio systems
Radio system, overview (sedan)
1 - Radio
In center console
Removing and installing page 91-23
2 - BOSE amplifier
In luggage compartment (left-rear) under
parcel shelf
Removing and installing page 91-35
3 - Antenna amplifier
In left D-pillar trim
Removing and installing page 91-39
4 - Rear window antenna
Upper 3 wires are AM antenna (non-
heated)
Remaining wires are FM antenna (heated)
Removing and installing Repair Manual,
Body Exterior, Repair Group 64
Radio systems
5 - CD changer
In luggage compartment (lower-left)
Removing and installing page 91-31
Checking cable page 91-34
6 - Mid-range/treble speaker
In front door trim (top)
Removing and installing page 91-28
7 - Bass speaker
In front door trim (bottom)
Removing and installing page 91-27
8 - Broad band speaker
In rear door trim (only with BOSE sound
system)
Removing and installing page 91-30
Radio systems
9 - Speaker in parcel shelf
Broad band speaker
Removing and installing page 91-29
Bass speaker (only with BOSE sound
system)
Removing and installing page 91-29
10 - Telephone speaker
With standard radio equipment, speakers
in front door trim are also used as
telephone speakers
For radios with BOSE sound system,
telephone speaker is in front door trim on
driver's side
Radio systems
Radio system, overview (Avant)
1 - Radio
In center console
Removing and installing page 91-23
2 - Bass speaker
In front door trim (bottom)
Removing and installing page 91-27
3 - Mid-range/treble speaker
In front door trim (top)
Removing and installing page 91-28
4 - Broad band speaker
In rear door trim
Removing and installing page 91-30
5 - Antenna base
With integrated amplifier
6 - Roof antenna
With radio and telephone system,
combination antenna is used
Removing and installing page 91-40
Radio systems
7 - CD changer
In luggage compartment (left-rear) under
cargo area storage bin
Removing and installing page 91-32
Checking cable between radio and CD
changer page 91-34
8 - BOSE amplifier combined with bass
speaker (subwoofer) only with "Concert
with BOSE sound system"
In cargo area (left-rear) under side trim
Removing and installing page 91-37
9 - Bass speaker (subwoofer) only with
"Concert" radio
In cargo area (left-rear) under side trim
Removing and installing page 91-37
Radio systems
Radio, removing and installing (Concert)
CAUTION!
Obtain the anti-theft radio code before
disconnecting the radio.
Special tools and equipment
T10057 radio removal tool
Removing
- Insert T10057 radio removal tool into front panel of radio as shown.
Top L: upper left
Top R: upper right
- Remove radio out of instrument panel together with T10057.
- Disconnect harness connectors and antenna wire.
Radio systems
Installing
- Remove T10057 radio removal tool before
installing radio.
- Connect harness connectors and antenna
wire.
- Carefully slide radio into instrument panel until
radio is fully engaged in frame.
- Enter anti-theft radio code and check operation
radio owners manual.
Radio systems
Radio, removing and installing
(Symphony)
CAUTION!
Obtain the anti-theft radio code before
disconnecting the radio.
Required special tools and equipment
T10057 radio removal tool
Radio systems
Removing
Perform the following work sequence:
- Insert T10057 radio removal tools into release slots (arrows) as shown
until they engage.
Top L - top and bottom left
Top R - top and bottom right
- Pull radio out of instrument panel using grip rings on release tool.
- Unlock and disconnect harness connectors
Remove radio release tools:
- Press locking latch arrow- and remove radio release tools toward front.
Installing
- Connect harness connectors to radio.
- Slide radio evenly into instrument panel, until it engages in assembly
frame.