The windshield of a 2020 Subaru is a masterpiece of automotive glass engineering. Unlike flatter windshields of the past, modern Subaru models feature complex curvatures designed to optimize aerodynamics and minimize wind noise. This specific geometry requires a wiper blade with a precise tension map. Genuine Subaru OEM blades are engineered with a contoured spring steel beam that maintains uniform pressure across the entire length of the blade, regardless of the windshield’s arc.

Generic ‘one-size-fits-all’ blades often struggle with these modern curves. You might notice ‘lift-off’ at higher highway speeds or missed spots in the center of the glass where the blade fails to make contact. By choosing parts specifically designed for your model, you ensure that the rubber element stays flat against the glass, effectively clearing water, snow, and road grime in a single pass.

Furthermore, the 2020 model year marked a significant refinement in Subaru’s material science. The rubber compounds used in Genuine Subaru parts are infused with high-grade synthetic polymers that resist the ‘cooking’ effect of the Missouri summer sun. While aftermarket blades may use cheaper organic rubber that hardens and cracks within months of exposure to UV rays, OEM components are tested to withstand the extreme temperature swings common in St. Louis.

When you visit our service center, you’re getting more than just a piece of rubber; you’re getting a component that was wind-tunnel tested to ensure it doesn’t chatter or whistle at 70 MPH. It’s this attention to detail that separates a true Subaru experience from a standard repair. Check out our New Subaru Inventory to see how these engineering standards are applied across our latest models.

If your wipers leave a film of water or milky streaks across the glass, the rubber edge has likely lost its sharp ‘squeegee’ profile. This is often caused by road oils or sap that has bonded to the blade.

When a blade develops a ‘set’ or becomes rigid, it will jump across the glass rather than gliding smoothly. This usually indicates that the rubber has hardened due to extreme heat or age.

Physical damage is the most obvious sign. In St. Louis, ice and heavy snow can easily tear the delicate rubber away from the metal frame, leading to metal-on-glass contact which can scratch your windshield.

If your 2020 Subaru is equipped with the EyeSight® Driver Assist Technology, your windshield is more than just glass—it’s a crucial sensor array. The dual cameras located near the rearview mirror ‘see’ the road to provide Pre-Collision Braking and Adaptive Cruise Control. If your wipers leave streaks or a hazy film directly in the cameras’ field of vision, the system may disable itself to prevent inaccurate readings.

Subaru recommends Genuine Subaru Wiper Blades because they are specifically tested to ensure they do not leave the type of residue or streaking that triggers EyeSight system errors. Aftermarket blades with ‘water-repellent’ coatings can sometimes leave a silicone film that interferes with the optical clarity required by the cameras. By using OEM parts from Sunset Hills Subaru, you’re protecting the integrity of your vehicle’s most advanced safety features.

For more information on keeping your safety systems in peak condition, you can Call us at (314) 476-9638 to speak with a service advisor.

1. Enter Service Position: On many 2020 Subaru models, the wipers are tucked below the hood line for aerodynamics. With the ignition in the ‘ON’ position, turn it ‘OFF’ and immediately push the wiper stalk upward for two seconds. The arms will move to a vertical position on the glass.

2. Lift and Protect: Gently pull the wiper arm away from the windshield until it locks in the upright position. Pro-tip: Place a folded towel on the windshield directly under the arm. If the arm accidentally snaps down without a blade attached, the towel prevents the metal arm from cracking your glass.

3. Release the Blade: Locate the small tab on the underside of the wiper hook (the J-hook). Press the tab and slide the blade downward toward the base of the arm. It should slide off easily.

4. Install New Blade: Slide the new Genuine Subaru blade into the hook until you hear a distinct ‘click’. This ensures the locking mechanism is engaged.

5. Test: Gently lower the arm back to the glass, remove your towel, and cycle the wipers to ensure smooth operation.

Once a month, wipe the rubber edge of your blades with a clean cloth dipped in washer fluid. This removes road film and debris that causes streaking.

Never use your wipers to clear heavy ice. The jagged edges of ice will slice the rubber. Use a scraper first, or let your Subaru’s wiper de-icer (if equipped) do the work.

Spray-on waxes at automatic car washes can build up on the rubber, causing it to skip. Wipe the blades down after every wash to maintain flexibility.

St. Louis is notorious for its weather ‘mood swings.’ In the 63127 ZIP code, we deal with high humidity in the summer that traps pollutants against your glass, and heavy road salt in the winter that can corrode the internal springs of your wiper arms. These local factors mean that a wiper blade that might last 12 months in a milder climate may only last 6 months here in Sunset Hills.

We recommend a ‘seasonal switch’—changing your blades in the late fall to prepare for winter slush, and again in the late spring to ensure you’re ready for the heavy thunderstorms of early summer. If you’re considering an upgrade to a newer model with even better visibility features, why not Get your value trade and see what your current Subaru is worth toward a new one?

Washer Fluid: We use Genuine Subaru washer fluid that includes a de-icing agent and specialized surfactants to help the blades glide smoothly.

Nozzle Alignment: Over time, washer nozzles can become clogged or misaligned. Our team ensures the spray hits the ‘sweet spot’ for maximum clearing efficiency.

Chip Repair: Small chips can quickly turn into cracks that ruin a wiper blade. We can inspect your glass for damage before it becomes a safety hazard.

Are wiper blades covered under my Subaru warranty?
Many 2020 Subaru models were sold with a 3-year/36,000-mile Wear Item Limited Warranty. This often includes one free set of replacement wiper blades within that window. Contact our service team to see if your vehicle is still eligible.

How long does the rear wiper blade last?
Rear blades generally last longer because they aren’t exposed to the same constant wind and debris as the front. However, because they are often forgotten, the rubber can dry out and scratch the rear glass. We recommend checking it every time you replace your front blades.

Do I need special ‘Winter’ blades?
Subaru’s OEM beam-style blades are designed as all-season components. They lack the external metal framework of traditional blades, meaning there are no hinges to freeze up in St. Louis winters. They provide excellent performance in both snow and rain.

Can I just buy the rubber ‘refills’?
For many 2020 models, Subaru offers rubber inserts (refills) that slide into your existing OEM frames. This is a more cost-effective and eco-friendly way to maintain visibility if your metal or plastic frames are still in good condition.