Audi Workshop Service and Repair Manuals > A3 Mk1 > Vehicle electrics | Radio, telephone and navigation system | Infotainment | Navigation system III (as of week 29/99)

General

Caution

Disconnect battery earth strap before working on electrical system.

On vehicles fitted with telematics system, activate telematics control unit service mode before disconnecting battery → Chapter.

Note!

t	Establish radio anti-theft code before disconnecting battery.

t	On reconnecting battery, remember to activate vehicle equipment (radio, clock, electric window lifters, etc.) in accordance with Owner's Manual and to deactivate service mode of telematics control unit.

Audi Workshop Service and Repair Manuals