Volvo S80 Owner's Manual page 162

04 Driver support
Adaptive cruise control*
Cause
The radar surface in the grille is dirty or covered with ice or snow.
Heavy rain or snow blocking the radar signals.
Water or snow from the road surface swirls up and blocks the radar sig-
nals.
The radar surface has been cleaned but the message remains.
04
Symbols and messages in the display
Symbol Message
DSTC Normal to enable
Cruise
Cruise control Cancelled
*
160
Option/accessory, for more information, see Introduction.
Action
Clean the radar surface in the grille from dirt, ice and snow.
No action. Sometimes the radar does not work during heavy rain or
snowfall.
No action. Sometimes the radar does not work on a very wet or snowy
road surface.
Wait. It could take several minutes for the radar to sense that it is no
longer blocked.
Specification
Standby mode or active mode without detected vehicle.
Active mode with detected vehicle to which cruise control adapts the speed.
Time interval activated, during adjustment.
Time interval activated, after adjustment.
Adaptive cruise control cannot be activated until the Stability and Traction Control system (DSTC) has
been set in Normal mode - see page 146.
Adaptive cruise control has been deactivated - the driver has to regulate the speed.