Buick 2011 Lucerne Owner's Manual page 162

This feature lets you use the high-beam headlamps to
signal the driver in front of you that you want to pass.
It works even if your headlamps are off.
Pull the turn signal lever toward you briefly to
flash-to-pass.
If the headlamps are off or on low beam, the high-beam
headlamps will turn on. They will stay on as long as you
hold the lever toward you and the high-beam indicator
on the instrument panel cluster will come on.
The windshield wiper lever is located on the left side of
the steering column.
4-6
Turn the band with the wiper symbol on it to control the
windshield wipers.
For a single wiping cycle, hold it on mist until
the wipers start, then release. The wipers stop after one
wipe. Several wipes, hold the band longer.
Use to set the delay time between wipe
cycles. The wiper speed can be set for a long or short
delay between wipes. The closer the band is set to the
top of the lever, the shorter the delay.
Slow wipes.
Fast wipes.
Turns the wipers off.
Clear ice and snow from the wiper blades before using
them. If frozen to the windshield, carefully loosen or
thaw them. Damaged blades should be replaced.
Heavy snow or ice can overload the wiper motor.
A circuit breaker will stop the motor until it cools.
The vehicle has wiper-activated headlamps. After the
windshield wipers have completed eight wipe cycles
within four minutes, the headlamps automatically turn
on. See Wiper Activated Headlamps on page 4 11 for
more information.