Defect
On certain trucks, the center roof marker light connector(s) may not have been manufactured properly. As a result, the center roof marker light(s) may not work.
Safety Risk
A roof marker light that doesn't work could make the truck less visible to others and increase the risk of a crash.
Remedy
Volvo Trucks will notify owners by mail and advise you to take your truck to a dealership to inspect and, if necessary, replace the center roof marker light(s).