This guide works on my 2004 SAAB, but I have not tried it out on other models, so I can not guarantee how it works out, hope it will work for you as it did for me.
Required things:
GM Tech2 scanner for GM and SAAB
32MB PCMCIA Card for Tech2
OBDII port adapter
Instruction:
Insert the 32MB SAAB card into GM Tech2 tool slot
Connect Tech2 diagnostic tool using OBDII port adapter
Screen of Tech2 scan tool will then light up
Go to Diagnostic Mode
Select Diag, then year of made 2004, model 9-3 Sport Select Body and then Exterior Lighting and Horn
Low beam adjustments
F0. Auto Low Beam also in Pos 0
Change setting to NO
The lights will then flicker and go out
Select Exit
Go to Fog Lights Front
Change to Position 1 & 2 ROW (Rest of World) Program
As you can see, the light settings are changed to:
Pos 0> No Lights
Pos1> Fogs and 5 Watt Headlamp / Parking Light
Pos3> Low Beam, High Beam, Manual Control of Fogs
Disconnect Tech2 scanner when finish.