Volvo S80 Owner's Manual page 172

04 Driver support
Distance Warning*
Symbols and text messages
Message
Symbol A
Radar blocked See
manual
Collision warn.
Service required
04
A Symbols are schematic - may vary by market and car model.
*
170
Option/accessory, for more information, see Introduction.
Specification
Distance Warning temporarily disengaged.
The radar sensor is blocked and cannot detect other vehicles, e.g. in the event of heavy rain or if slush has
collected in front of the radar sensor.
Read about the limitations of the radar sensor, see page 163.
Distance Warning and Collision Warning with Auto Brake fully or partially disengaged.
Visit a workshop if the message remains - an authorised Volvo workshop is recommended.