Replace windshield wiper blades every 6 to 12 months, or as soon as they streak, chatter, skip, or leave a patch of glass unwiped after you've cleaned the windshield. Hot sun and freezing winters wear the rubber out faster, so in harsh climates expect to be at the short end of that range. Don't wait for a rainstorm to find out.
That range is AAA's general recommendation. Bosch, which makes wiper blades, says to replace them at least once a year, or sooner if you notice streaking, noise, or poorer performance. Rubber ages whether you use the wipers or not, so a car that sees little rain still needs new blades eventually.
Signs your wiper blades need replacing#
- Streaks or smears left behind on each pass
- Chattering or skipping across the glass
- A haze that doesn't clear even with washer fluid
- Patches the blade misses, often in the middle of the sweep or at the top edge
- Squeaking or scraping noises
- Cracks, splits, or rubber peeling away from the frame
- Rubber that feels hard and stiff instead of soft and flexible
Run your finger along the wiping edge with the car parked. A good edge feels smooth and sharp-cornered. A worn one feels rounded, nicked, or brittle.
Is it the blade, the glass, or the arm?#
Clean before you buy. A film of road grime, tree sap, or old wax on the windshield can make new blades streak too. Wash the glass properly, then wipe the rubber edge of each blade with a cloth dampened with washer fluid. You'll often see a black line of dirt come off. Then test the wipers on wet glass.
If they still streak on clean glass, the blade is worn. If the wiper hops across the glass or misses the same spot even with a new blade, the arm may not be pressing evenly. Bosch notes that after a windshield replacement, the angle and contact pressure of the arm may need adjusting at a shop. And if the wipers move slowly, stop in odd places, or don't move at all, that's the motor or linkage, which needs a mechanic.
How to replace windshield wipers#
Most wiper blades clip on and off in a couple of minutes without tools.
- Find the right sizes. Look them up by your car's year, make, and model at the parts store or in the owner's manual. The driver and passenger blades are often different lengths, and the connector type matters as much as the length.
- Check whether your car needs a service position. On some cars the wiper arms sit under the edge of the hood and can't be lifted until you move them up using a setting or a sequence described in the manual.
- Lift the wiper arm away from the glass. Lay a folded towel on the windshield underneath it, in case the arm snaps back. A bare metal arm under spring tension can crack a windshield.
- Press the release tab where the blade meets the arm and slide the old blade off.
- Slide the new blade on until it clicks. Tug gently to make sure it's locked.
- Lower the arm slowly onto the glass. Don't let it drop.
- Test with the washers on to make sure both blades sweep cleanly and don't hit each other or the trim.
Replace both front blades at the same time. They've had the same exposure and wear out at about the same rate. If you're not sure about the fitting, a dealer, mechanic, or auto parts store can find the right blades for your car.
Don't forget the rear wiper#
The rear wiper on a hatchback or SUV is easy to forget because you don't use it much, but it ages just as fast. Check it at the same time as the front blades. It often uses a different size and a different fitting, so look up that one separately.
Winter wiper care#
Cold makes rubber stiff and brittle, and ice is hard on blades.
- Don't switch on wipers that are frozen to the glass. Clear the ice with the defroster and a scraper first. Running frozen wipers can tear the rubber or strain the motor.
- Switch to a washer fluid rated for freezing temperatures before the first frost.
- If you get a lot of snow and ice, winter blades with a rubber cover over the frame resist ice buildup better than standard ones. AAA mentions them as an option for harsh winters.
- Knock ice off the blades before you set off, so they sit flat on the glass.
In hot, sunny climates, heat is the problem. The rubber hardens, warps, and cracks. Parking in a garage or in the shade helps blades last longer.
Make it part of a routine#
Check your blades every time you wash the car; a regular car wash is the perfect moment because the glass is already clean. AAA suggests checking them seasonally, for example when the clocks change.
The easiest way not to forget the replacement itself is a recurring ChoreLists.com reminder every 6 or 12 months, depending on your climate, with the blade sizes saved in the note so you don't have to look them up again. Add it to your car maintenance schedule along with the monthly tire and light checks.