I have a 1999....2006 and 2010 S80

Just realized that all are on different light settings. the manual was a bit confusing. I called volvo and spoke to a service rep who said to keep them all on the 0. I then spoke to a sales rep who sold me the 2010 who said it goes on the setting all the way to the right at 1 o'clock

any suggestions would be great.

 

Different positions for different uses.

Daytime Running Lights
Parking Lights
Night Lights

Start your cars, put the switches in different positions, and walk around the cars.