Rear windshield wipers differ from front wipers primarily in their design, function, and usage. While front wipers are essential for clearing rain, snow, and debris from the windshield for driver visibility, rear wipers are used to maintain visibility through the back window, especially in hatchbacks, SUVs, and minivans.
What Are Rear Windshield Wipers and Why Are They Important?
Rear windshield wipers are smaller than front wipers and are typically found on vehicles with a more vertical rear window. They play a crucial role in ensuring clear visibility through the back window, which is vital for safe driving, particularly when reversing or changing lanes. Rear wipers are especially useful in adverse weather conditions like rain or snow, where they help maintain a clear view by removing water, dirt, and debris.
Key Differences Between Front and Rear Windshield Wipers
Understanding the differences between front and rear windshield wipers can help you maintain them properly and ensure optimal performance.
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Design and Size: Rear wipers are generally smaller and have a simpler design compared to front wipers. This is because the rear window is typically smaller and more vertical.
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Function and Usage: While front wipers operate continuously or intermittently to provide clear visibility in front, rear wipers are used intermittently or as needed to clear the rear window. This is due to the difference in airflow dynamics and the amount of debris that typically accumulates on the rear window.
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Mechanism: The mechanism of rear wipers is often less complex, with a single arm and blade, compared to the dual-arm design of front wipers.
How to Maintain Your Rear Windshield Wipers
Proper maintenance of rear windshield wipers ensures they function effectively when needed. Here are some tips:
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Regular Inspection: Check the wiper blade for any signs of wear and tear, such as cracks or splits. Replace them if necessary.
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Clean the Blades: Use a damp cloth to wipe the blade regularly. This helps remove dirt and debris that can cause streaking.
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Check the Wiper Arm: Ensure the wiper arm is not bent or damaged, as this can affect the wiper’s performance.
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Replace as Needed: Generally, wiper blades should be replaced every six to twelve months, but this can vary based on usage and environmental conditions.
Choosing the Right Rear Windshield Wiper
Selecting the right rear wiper blade is crucial for optimal performance. Consider the following factors:
- Size: Ensure the blade size matches the specifications for your vehicle’s rear window.
- Material: Opt for high-quality materials that can withstand various weather conditions.
- Compatibility: Check if the wiper blade is compatible with your vehicle’s wiper arm.
Comparison Table: Front vs. Rear Windshield Wipers
| Feature | Front Wipers | Rear Wipers |
|---|---|---|
| Size | Larger | Smaller |
| Design Complexity | More complex | Simpler |
| Function | Continuous/Intermittent | Intermittent/As needed |
| Number of Arms | Usually two | Typically one |
| Common Usage | All vehicles | Hatchbacks, SUVs, Minivans |
How to Replace Rear Windshield Wipers?
Replacing rear windshield wipers is a straightforward process. Here’s a step-by-step guide:
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Lift the Wiper Arm: Carefully lift the wiper arm away from the rear window.
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Remove the Old Blade: Press the small tab or button where the blade meets the wiper arm and slide the blade out.
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Attach the New Blade: Align the new blade with the wiper arm and slide it into place until it clicks securely.
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Test the Wiper: Lower the wiper arm back onto the window and test it to ensure it operates smoothly.
Why Do Some Cars Not Have Rear Windshield Wipers?
Not all vehicles are equipped with rear windshield wipers. This is largely due to the design of the vehicle. Sedans and coupes, for instance, typically have a sloped rear window that allows rain and debris to slide off more easily, reducing the need for a rear wiper. In contrast, vehicles with a more vertical rear window, such as hatchbacks and SUVs, benefit significantly from a rear wiper.
People Also Ask
Why do rear wipers wear out faster?
Rear wipers may wear out faster due to exposure to harsh weather conditions and less frequent use, leading to drying and cracking of the rubber blade. Regular maintenance can help extend their lifespan.
Can I use front wipers on the rear window?
No, front wipers are not designed to fit the rear window’s wiper arm or its specific curvature. It’s important to use the correct size and type for optimal performance.
Do rear wipers need a special washer fluid?
Rear wipers typically use the same washer fluid as front wipers. Ensure the fluid reservoir is full and the nozzles are clean for effective cleaning.
How often should I replace rear windshield wipers?
Rear windshield wipers should be replaced every six to twelve months, or sooner if they show signs of wear such as streaking or noise.
What should I do if the rear wiper motor fails?
If the rear wiper motor fails, check the fuse and wiring first. If these are intact, the motor may need replacement. Consult a professional mechanic for assistance.
Conclusion
Rear windshield wipers are an essential component for maintaining clear visibility through the back window, particularly in vehicles with vertical rear windows. Understanding their differences from front wipers, maintaining them regularly, and knowing how to replace them can enhance your driving safety. For more information on vehicle maintenance, consider exploring topics such as how to choose the right wiper blades or tips for maintaining your car’s exterior.
