Volvo 2010 S80 Owner's Manual page 176

04 Comfort and driving pleasure
Distance alert
Symbol Message
Radar blocked
See manual
Collision warn.
Service required
04
176
Description
Distance Alert has been temporarily disconnected because the radar is obstructed in some way and
cannot detect other vehicles. See page 170 for information on the radar sensor's limitations.
Distance Alert or Collision Warning with Auto-brake is not functioning properly. Contact a trained and
qualified Volvo service technician.