Cadillac 2002 DeVille Owner's Manual page 113

Be sure to clear ice and snow from the wiper blades
before using them. If they're frozen to the windshield,
carefully loosen or thaw them. If the blades do become
damaged, get new blades or blade inserts.
Heavy snow or ice can overload the wiper motor.
A circuit breaker will stop the motor until it cools.
Clear away snow or ice to prevent an overload.
t
Rainsense II Wipers (If Equipped)
If your vehicle has this feature, the moisture sensor is
mounted on the interior side of the windshield behind
the rearview mirror. It is used to automatically operate
the wipers by monitoring the amount of moisture
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build up on the windshield. Wipes occur as needed to
clear the windshield depending on driving conditions
and the sensitivity setting. In light rain or snow, fewer
wipes will occur. In heavy rain or snow, wipes will
occur more frequently. The Rainsense wipers operate in
a delay mode as well as a continuous low or high speed
as needed. If the system is left on for long periods of
time, occasional wipes may occur without any moisture
on the windshield. This is normal and indicates that the
Rainsense system is activated.
The Rainsense system can be activated by turning the
wiper band to one of the five sensitivity levels indicated
on the wiper stalk. The position closest to OFF is the
lowest sensitivity setting, level one. This allows more
rain or snow to collect on the windshield between wipes.
Turning the wiper band away from you to higher
sensitivity levels increases the sensitivity of the system
and frequency of wipes. The highest sensitivity setting,
level five is closest to LO. A single wipe will occur each
time you turn the wiper stalk to a higher sensitivity level
to indicate that the sensitivity level has been increased.
NOTICE:
The wipers must be turned off when going
through a car wash to avoid damage.
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