Impreza WRX STI F4-2.5L DOHC Turbo (2007)
Wiper Blade: Testing and Inspection
INSPECTION
1. When the wiper does not perform well, inspect the following:
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Make sure the movable part of the blade assembly moves smoothly.
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Make sure the wiper rubber is not deformed or damaged.
2. Replace them with new parts if damaged.
