AUDI A4 2001 B5 / 1.G Technical Features Design And Function

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61
In order to account for the resistance of
normal or insulating windows with regard to
the excess force limitation function of the
electric window lifters, the relevant type of
glazing is set in adaption channel 63.
Mirror functions
The mirror heating is switched on together
with the
– rear window heating
– at an outside temperature of below 20 °C
switches on automatically.
When the mirror heating is switched on, the
heating capacity is 100%. Then the heating is
activated intermittently in accordance with
the ambient temperature and vehicle speed.
The mirror glass is kept at a temperature of
around 20 °C.
The mirror fold-in function (optional) returns
the mirrors to the normal position at a vehicle
speed of 15 km/h. The function is disabled at
the same time.
Passenger’s side mirror
Lowering of the mirror (optional) takes place
when the reverse gear is engaged.
The mirror is returned to its original position
by
– operating the mirror selector switch, or
– when the speed of 15 km/h is exceeded.
Diagnostics
The adjustment of various settings can be
performed via the control unit coding and
adaption functions of the convenience
system diagnosis.
Customer requirements relating to the
convenience opening and closing functions
can be taken into account via adaption
channel 62.
SSP254_126
SSP254_127
SSP254_128

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62
TS

Electrical system
The Audi A4 convenience system is available
with
– Anti-theft alarm
– Ultrasonic interior monitor
– Shattered glass sensor (Avant)
– Towing protection
as optional extras.
The anti-theft alarm is only activated when
the vehicle is locked via the radio remote con-
trol and by closing the driver's door.Deactivation is performed by
– opening the vehicle via the radio remote
control or
– opening the vehicle via the driver’s door
lock cylinder and switching on the ignition
within 15 seconds. If this time period is not
observed or if the key used is not stored in
the immobiliser, the alarm is triggered.
Data exchange between the immobiliser in
the dash panel insert and the central conven-
ience electronics takes place via the conven-
ience data bus.
Anti-theft alarm with interior monitor
High and low pitched tones
- air horn (sounder) Central control unit for con-
venience system J393Ignition steering
lock D Door lock
Convenience data bus
SSP254_133

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63
An innovation in the anti-theft alarm is that a
sounder with an integrated battery is fitted in
place of the horn.
This enables the alarm to sound even when
the power supply has been interrupted.
The ultrasonic interior monitor and the tow-
ing protection can be switched off from
inside the passenger compartment by means
of a switch.
Diagnostics
The angles of the both the longitudinal and
transversal inclination of the inclination sen-
sor are displayed in the measured value
block.
SSP254_134
SSP254_135

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Functional mechanism of inclination sender
Towing protection is achieved by means of
the inclination sender installed in the central
convenience electronics.
The functional mechanism of the inclination
sender is based on the determination of
resistance changes relating to the volumetric
fluctuation of a viscous electrically conduc-
tive fluid.
Electrical system
SSP254_110
The resistance is stored at the moment of
activation of the anti-theft alarm.
Changes in the position of the inclination
sensor caused by one-sided lifting of the
vehicle alter the resistance. The alarm is trig-
gered.
The angle of inclination can be displayed in
the measured value blocks.
Sub-com-
partment
Ceramic
housing
Indicator
fluid
Electrodes
Operational
amplifier

Variously arranged electrodes project into
this fluid.
Alternating fields are applied to the elec-
trodes of the sender, which is divided into
sub-compartments.
When a change in position occurs, the distri-
bution of the fluid in the chambers also
changes.
As the level of the liquid in the sub-compart-
ments changes, the resistance determined for
the sub-compartments via the electrodes also
changes.
Electrode
connections
SSP254_111

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Radio chorus II, concert II and symphony II
In the new Audi A4, the new generation of
radios, chorus II, concert II and symphony II
are available as options.
The following functions have been optimised:
– AM has been extended to include long
wave.
– There are now 12 programmable stations
for AM and FM.
All three radio versions are compatible with
the external CD changer (optional).
The optional CD changer is now built into the
glove compartment.
The BOSE sound system can be ordered as an
optional extra for all radio systems of the new
generation.
The connection of the new generation of
radios to the data bus information system
enables the exchange of large volumes of
data with other systems.
This makes new functions such as e.g.
convenience radio coding possible.
Thanks to the convenience radio coding, man-
ual deactivation of the radio anti-theft lock
following a loss of the power supply is no
longer necessary.
A prerequisite is that the radio is built into the
same vehicle.
Sound quality is enhanced by the installation
of a central loudspeaker in the centre of the
dash panel as well as a sub-bass speaker
under the rear shelf.
AIRBAG
OFFON
Audicd chargerCOMPAKTAKTDIGITAL AUDIOAL AUDIO
LOAD

SSP254_106

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In order to improve sound quality, acoustic
curves related to vehicle type are stored in the
concert II and symphony II radios.
The acoustic curves are set in the control unit
coding function of the radio systems.
In addition, the sound settings for the FM, AM
and CD modes are stored separately in the
concert II and symphony II radios. Conse-
quently, the various level controls do not
require resetting each time the driver
changes modes.
Radio chorus II
New functions with respect to the predeces-
sor model include:
– Skip title function
– Scan function
– Dolby noise suppression
in the cassette player as well as
– a sorting function within a radio station
family
in the convenience radio tuner search func-
tion.
Radio concert II
A single speed CD player is integrated in the
concert II radio.
The cassette player has been discontinued.
Radio concert II and symphony II
The improved radio traffic news memory in
the Radio concert II and symphony II allows
the driver to program the time for starting the
two-hour recording of traffic news announce-
ments. Two timers are available, which can be
programmed individually.
Example:
The driver can set the starting time for the
recording of radio traffic news announce-
ments for the drive to work in the morning
and for the drive back in the evening sepa-
rately.
Radio reception is improved in the concert II
and symphony II radios by the use of the
M
ulti
C
ommunication
B
ar (MCB) with inte-
grated aerial diversity.
For further information on the aerial module,
please refer to 72.
Electrical system
SSP254_009
SSP254_007

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Radio symphony II
A 6x CD changer as well as a cassette player
are integrated in the symphony II radio.
Searching for alternative frequencies is
speeded up by the use of a second tuner. The
second tuner also allows for Traffic Message
Channel (TMC) evaluation in the background.
For further information, please refer to the
relevant operating instructions.
CAN networking in the new generation of
radios
All three radio versions are connected to the
data bus information system.
Important signals via the data bus informa-
tion system:
SSP254_006
– Ignition on/steering column-
electronics
– Ignition key inserted/steering
column electronics
– Switch illumination/dash panel
insert
– Display illumination/dash panel
insert
– Speed/dash panel insert
– Convenience coding/dash panel
insert
– Vehicle identification/dash
panel insert
– Prompt signal/data bus informa-
tion
– Data bus system information/
dash panel insert
– Time/dash panel insert
– Control signals from multi-func-
tion steering wheel/steering
column electronics– Display functions/dash panel
insert
– Sleep signal/data bus informa-
tion
– TMC data for symphony II/
navigation system
– Convenience coding request/
dash panel insert
Inputs/sourceOutputs/receiver

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Example:
If the radio is switched on with the ignition
key (S-contact) this requires the exchange of
data between three control units:
– Steering column electronics,
– dash panel insert (gateway) and
– radio.
If the radio does not switch on,
– the signal input in the steering column
electronics (terminal 86S),
– communication between the steering col-
umn electronics and the dash panel
(convenience data bus) and
– communication between the dash panel
and the radio
(data bus information system)
must be checked.
Diagnostics
For diagnosis of radio systems concert II and
symphony II, current consumption of aerial
diversity is monitored via the intermittent
frequency (IF) wiring.
Test mode
The new radio versions are equipped with a
test mode.
Activating field intensity measurement:
– Radio switched off
– Hold down key 1
– Switch on radio
Activating GALA display volume increase:
– Radio switched off
– Hold down key 2
– Switch on radio
Electrical system
SSP254_119
SSP254_120
Field intensity -
mean value
Increase in dB Button 1
Button 2
For further information on IF wiring,
please refer to SSP 213, Page 54.
FM 1 DOT + 88.9
34300033 TP AF

GALA 0dB

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Navigation IV and Navigation Plus-D
The new Navigation System IV and Navigation
System Plus-D are equipped with the dynamic
routing system.
The following traffic hold-ups are taken into
account during route planning:
– closed roads
– tailbacks and
– slow-moving traffic.
The system’s sources of information are the
traffic information from the radio stations via
the Travel Message Channel and from the
telematics
®

(optional) via the telephone
connection.
Once it is switched on, the navigation system
takes account of the traffic messages within a
radius of approx. 50 km around the vehicle.
If the route planning is activated, any hold-
ups are taken into consideration.
New hold-ups which arise are immediately
accounted for in the routing and the driver is
re-routed.
Data transfer of the traffic data is by
– Travel Message Channel data from the
radio
– Telephone data from the telematics control
unit J526
to the navigation system via the data bus
information system.
Selectivity area for traffic
messages, 50 km
major diversion
Tailback
local diversion
SSP254_129
SSP254_113

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TELE
RETURN
INFO
NAV
Menu

Within the menu structure of the navigation
system, the driver is able to
– switch the dynamic routing on and off,
– select the source of traffic information,
– manually exclude route sections from the
route planning.
For further information, please refer to the
operating instructions.
Travel Message Channel (TMC)
The TMC is a component of the Radio Data
System (RDS), which is transmitted by the
radio stations.
The information in the TMC includes the loca-
tion, type and duration of traffic hold-ups
reported by the police, automobile associa-
tions and government authorities in a coded
form standard throughout Europe.
The TMC data is not currently transmitted by
all radio stations.
This requires the use of a second tuner in the
radio or in the interface of the Navigation
System Plus.
As only the symphony II radio is equipped
with a second tuner, the use of TMC data for
dynamic routing is only possible with this
version.
Dynamic routing in conjunction with the
chorus II and concert II radios is only possible
by means of the traffic messages via tele-
phone with telematics
®

.
Diagnostics
The navigation system diagnostics is interro-
gated via the L-wire.
Electrical system
SSP254_130
1 Traffic information is available.
Source: Radio
Alternative route Traffic information
now automatic
for route section
for route from hereread
interrogate latest
Settings
Tailback function Back with RETURN