Audi Workshop Service and Repair Manuals > A3 Mk1 > Vehicle electrics | Radio, Telephone and Navigation System, Self-diagnosis | Self diagnosis, V.A.G Inspection Service | Self-diagnosis of navigation system Nav IV (BNS 4.0) as of week 04/01 | Starting self-diagnosis of navigation system BNS 4.0 (Nav IV)

Procedure

Indicated on display:

Address word for navigation system: 37

–	Press keys 3 and 7.

Rapid data transfer                HELP

Enter address word XX

Indicated on display:

–	Confirm entry by pressing Q key.

Rapid data transfer                    Q

37 - Navigation

Following display appears after approx. 5 seconds:

t	4B0919887A: Control unit part number

t	BNS 4.0: Component designation

t	0001: Software version

t	Code 00000: Not used

t	WSC XXXXX: Workshop code

Indicated on display of dash panel insert:

4B0919887A      BNS 4.0      0001     ->

Code 00000                WSC XXXXX


DIAG

–	Press → key.

Indicated on display:

Rapid data transfer                HELP

Select function XX