Cleaning
If your windshield is not clear after using the windshield washer or if a wiper blade chatters when running, wax or other material may be on the blade or windshield.
Clean the outside of the windshield with a washer solution or a mild detergent. Your windshield is clean if beads do not form when rinsing with clear water.
Clean each blade by wiping it with a cloth soaked in a washer solution or a mild detergent.
Then rinse the blade with clear water. If your windshield is still not clear after cleaning the blades and using the wiper, replace the blades.

Worn windshield wiper blades can damage the windshield and impair driver vision.
See also:
Underbody
In areas where road salt is used in winter, it is
necessary to clean the underbody regularly in
order to prevent dirt and salt from building up and
causing the acceleration of corrosion on the unde ...
Windshield wiper and washer switch
Windshield wiper and washer switch
The windshield wiper and washer operates when
the ignition switch is in the ON position.
Push the lever down to operate the wiper at the
following speed:
( ...
Ignition switch positions
LOCK: Normal parking position (0)
● Intelligent Key:
● PUSH OFF- The steering lock can only
be locked at this position (for vehicles
equipped with a steering lock mechanism).
OFF: ( ...
