Volvo 2009 V70 Owner's Manual page 172

04 Comfort and driving pleasure
Adaptive Cruise Control–ACC (option)
Symbol Message
Radar blocked
See manual
Cruise control
Service required
04
172
Description
ACC has been temporarily disconnected because the radar is obstructed in some way and cannot
detect other vehicles.
see page 169 for information on the radar sensor's limitations..
ACC is not functioning.
Contact a trained and qualified Volvo service technician.