Volvo 2009 V70 Owner's Manual page 93

This function is deactivated when a different
gear is selected.
NOTE
On vehicles with the optional rain sensor,
the tailgate wiper will be activated when
reverse is selected, if the rain sensor is acti-
vated and it is raining.
If the tailgate wiper is in the normal (continuous)
wiping mode, selecting different gears will not
affect its function.
03 Your driving environment
Wipers and washers
03
93