How to Replace an Intermittent Wiper Relay

How to Replace an Intermittent Wiper Relay

Intermittent wipers are a great feature for those times when it isn’t raining hard enough to have the wipers going at low speed. The intermittent wiper relay gives you this feature. The relay functions as a switch and energizes circuits as needed. In the case of your windshield wipers, it controls low, high, and intermittent speeds by energizing a particular circuit at a given moment, depending on what speed you have your wiper switch set to.

As with any electronic component, it can fail completely or only on one circuit. Your wiper relay could be bad if the low and high speed wiper positions function properly but the intermittent function stops working. Any combination of positions, working or not working, is a good indication of a faulty relay. If you notice inconsistent wiping along with relay issues, it may also be time to inspect your wiper blades for wear.

Part 1 of 1: Replacing your intermittent wiper relay

Materials Needed

·Owner's manual

·Screwdriver - flathead/Phillips

·Premium Wiper Blades (optional but recommended for better performance)

Step 1: Locate your relay. Many late-model vehicles can have multiple locations for fuses and relays.

There can be under-hood as well as interior locations. Your owner's manual is a good source for locations and diagrams. Frequently, the lid for the fuse/relay box will have diagrams as well.

·Note: If your car is a little older, it may only have a fuse box located under either the driver’s or passenger side dash with relays mounted in or near it. In these cars, relays are frequently mounted separate from the fuse box, usually under dash near the steering column.

Step 2: Remove the relay. With the ignition in the off position, remove the relay.

They can sometimes feel a bit tight and require a little force to pull them out. If you can’t pull it out by hand, gently pry it up with an appropriately sized screwdriver.

Upgrade Suggestion: While replacing the relay, check the condition of your wiper blades. If they show signs of wear (streaks or noise), replace them with durable options like BAOYI Silicone Wipers, designed for smoother operation and longer life.

Step 3: Install the new relay. Compare the bad relay with the new one.

The labels may be different, but make certain the number and position of the plugs are correct. Before you put things back together, switch the key on to verify the new relay is functioning properly. Once verified, switch the key off and button things up.

Tip: To get the most out of your new relay, pair it with high-quality wipers. Worn-out blades can strain the system, even with a new relay. Check out BAOYI Premium Wipers for a smoother, streak-free experience.

If you need an intermittent wiper relay replacement and you are not completely confident in making the repair, have one of Your Mechanic’s certified technicians come to your home or work and perform the replacement for you.

If you’re tackling relay replacement, it’s a great time to inspect your wiper blades. Explore our range of high-performance wiper blades to ensure you're ready for any weather. Regular maintenance ensures clear visibility and prolongs your system’s lifespan.

Need new wiper blades to complete your repair?

At BAOYI, we offer a full range of premium hybrid, silicone, and conventional wipers designed for durability and superior performance.

Contact us today to get the best solutions for your vehicle or fleet needs — fast quotes and bulk order options available.

👉 Send an Inquiry Now(enquiry@xmyujin.com)


Yujin Xiamen Plastic Manufacturing Co., Ltd.

Add: 77, Siming Industrial Zone, Meixi Road, Xiamen, China

Tel: 0086-592-7230097           Fax: 0086-592-7230029

Email: enquiry@xmyujin.com 

Web: www.yjwipers.com   



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