BLIS* – limitations
The Blind Spot Information System (BLIS) is an information system that indicates the presence of another vehicle moving in the same direction as your vehicle on roads with several lanes.
Maintenance

The BLIS/CTA[1] sensors are located on the inside of the rear fenders/bumper.
The surfaces in front of the sensors must be kept clean for the system to function optimally.
Repairs to the BLIS/CTA systems and/or repainting the rear bumper should only be done by a trained and qualified Volvo service technician.Important