Audi Workshop Service and Repair Manuals > A3 Mk1 > Vehicle electrics | Radio, Telephone and Navigation System, Self-diagnosis | Self diagnosis, V.A.G Inspection Service | Telephone self-diagnosis | Reading measured value block

List of display groups

Display group number	Indicated on display
001	1 = Telephone 2 = Registered/not registered 3 = Field strength 4 = 0...010
002	3 = Illumination dimming 4 = 0...100%
005	1 = Unit number
080	1 = Hardware version, prod. date
081	1 = Software version
125	1 = CAN bus link with dash panel insert 2 = CAN bus link with steering wheel 3 = CAN bus link with radio 4 = CAN bus link with navigation system

Audi Workshop Service and Repair Manuals