Volvo 2013 XC70 - Manual (Page 104)

03 Your driving environment
Wipers and washers
03
102
Move the lever forward to start the tailgate washer.
Intermittent wiping
Normal (continuous) wiping
NOTE
The rear wiper is equipped with cut-off func-
tion, which means that it will not operate if
its electric motor overheats. The wiper will
function again after a cool-down period
(30 seconds or longer, depending on the
heat of the motor and ambient temperature
conditions).
Tailgate wiper and reverse gear
If the windshield wipers are on and the trans-
mission is put into reverse gear, the tailgate
wiper will go into intermittent wiping function 1 .
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.
1 Consult your Volvo retailer if you would like to have this function deactivated.