The Toyota 4Runner is a reliable SUV, but sometimes its rear wiper can malfunction. This issue is often easily resolved without needing professional help. Let's explore the common causes and solutions for a non-working rear wiper on your 4Runner.

Common Causes

Several factors can cause your Toyota 4Runner's rear wiper to stop working:

  • Partially open rear window
  • Blown fuse
  • Faulty wiper motor
  • Damaged wiper arm or blade
  • Electrical connection issues

Rear Window Position

The most common and easily fixable cause is a partially open rear window. The 4Runner has a safety feature that prevents the rear wiper from operating when the window isn't fully closed.

To check this:

  • Ensure the rear window is completely closed
  • Press the window up button firmly
  • Listen for a clicking sound indicating full closure

If the window was slightly open, closing it fully should resolve the issue.

Checking the Fuse

If the rear window is closed and the wiper still doesn't work, check the fuse:

  • Locate the fuse box (usually under the dashboard or in the engine compartment)
  • Find the rear wiper fuse (consult your owner's manual for the exact location)
  • Inspect the fuse for any signs of damage
  • Replace the fuse if necessary with one of the same amperage

Wiper Motor and Electrical Connections

If the fuse is intact, the problem might be with the wiper motor or electrical connections:

  • Check for loose connections at the wiper motor
  • Inspect the wiring for any visible damage
  • Test the motor with a multimeter if you have the technical know-how

Wiper Arm and Blade Inspection

Sometimes, physical damage to the wiper arm or blade can prevent operation:

  • Examine the wiper arm for any bends or breaks
  • Check the wiper blade for wear or damage
  • Replace the blade if it's worn out

When to Seek Professional Help

If none of these solutions work, it's time to consult a professional. The issue might be more complex, such as a faulty wiper motor or electrical problem requiring specialized diagnostic tools.

FAQs About Toyota 4Runner Rear Wiper Issues

    • How often should I replace my 4Runner's rear wiper blade?
      Replace the rear wiper blade annually or when you notice reduced performance.
    • Can extreme weather affect my rear wiper's functionality?
      Yes, extreme cold can cause wiper fluid to freeze, while excessive heat can damage the rubber blade.
    • Is it normal for the rear wiper to stop mid-swipe?
      No, this could indicate a problem with the wiper motor or electrical system and should be checked.

By following these steps, you can often resolve rear wiper issues on your Toyota 4Runner without the need for expensive repairs. Regular maintenance and prompt attention to any problems will help ensure your rear wiper functions properly when you need it most.