Tools you'll likely need:
* Socket wrench: The size will depend on your vehicle, but it's likely a 10mm or 12mm.
* Flathead screwdriver (small): May be needed to gently pry or lift a retaining clip.
* Penetrating lubricant (like PB Blaster): Highly recommended to loosen any rusted or seized fasteners. Apply liberally and let it soak for a few minutes before attempting to remove the nut.
* Rag or towel: To protect the car's paint.
Steps:
1. Disconnect the wiper arm: Locate the nut securing the wiper arm to the wiper motor shaft. Spray penetrating lubricant onto the nut to help loosen it if needed. Use the socket wrench to carefully remove the nut.
2. Remove the wiper arm: Once the nut is off, the wiper arm should come off. However, sometimes there's a small retaining clip under the nut that needs to be carefully pried up or pushed out with a small flathead screwdriver. The arm will likely require some effort to pull straight off; use even pressure to avoid bending or breaking the arm or shaft.
3. Remove the wiper blade: Once the arm is off, simply pull the wiper blade off the arm. There's usually a simple mechanism to release the blade.
Important Considerations:
* Position: Before starting, park your vehicle on a level surface and make sure the wiper blade isn't resting directly on the back window. This can prevent the wiper arm from turning or moving as freely. You might want to position the wiper arm approximately halfway between its parked and fully up position.
* Force: Use caution and avoid excessive force at any step. If something feels stuck, double-check to ensure you've loosened everything properly. Using penetrating lubricant beforehand is key.
* Rust and Corrosion: In areas with high humidity or salt, the nut securing the wiper arm can be very difficult to remove due to rust and corrosion. Penetrating lubricant and patience are vital in these situations.
If you're uncomfortable with these steps, it's always best to have a qualified mechanic perform the removal and installation. Damaging the wiper motor shaft or surrounding parts can be expensive to repair.
