Volvo 2013 XC70 - Manual (Page 177)

04 Driver support
Park assist*
04
* Option/accessory, for more information, see Introduction. 175
with water and a suitable car washing deter-
gent.
Ice and snow covering the sensors may cause
incorrect warning signals.
NOTE
If the sensors are obstructed by e.g., dirt,
snow, or ice, this could result in false warn-
ing signals from the park assist system.