To keep the locks from freezing, squirt an approved de-icer fluid or glycerine into the key opening. If a lock is covered with ice, squirt it with an approved de-icing fluid to remove the ice. If the lock is frozen internally, you may be able to thaw it out by using a heated key. Handle the heated key with care to avoid injury.
Windshield Wiper-Washer Switch Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the steering wheel.
(Refer to Steering System - "Steering Wheel")
3.
Remove the steering column shroud lower / upper pan ...
Windshield wiper/washer
A : Wiper speed control (front)
...