It is not uncommon for the exterior light bulbs to burn out prematurely. No repair option has been reported other than replacing the failed bulb.
Car Problem Reports
Volvo S80 Exterior Light Bulbs May Burn Out Prematurely
Volvo S80 Problem
Average Mileage: 108,412 mi (45,343 mi - 148,000 mi)
Visitor, 2008 Volvo S80, 78,000 mi
this is the fourth time that i had to replace low lights it's getting to be a pain already!!!!!!!
Visitor, 2001 Volvo S80, 121,000 mi
Bulbs continue to burn out about every 3 months
Visitor, 2000 Volvo S80, 125,000 mi
Replace headlight bulbs frequently
I have replaced the headlights 6 times in the last 9 months. Now it is more than replacing the bulb. A new bulb does not work