Troubleshooting and Fixing Subaru Forester Wiper Fluid Pump Issues

Key Takeaways

  • If the wiper fluid pump in your Subaru Forester stops working, it may be due to a clog, a broken pump, or a blown fuse.
  • You can troubleshoot the issue by checking the fluid level, ensuring the sprayer nozzles are clear, and checking for power to the pump.
  • Fixing the issue may require unclogging the pump, replacing a blown fuse, or replacing the pump entirely.
  • Regular maintenance and inspection can prevent wiper fluid pump issues from occurring.

The wiper fluid pump is an essential component of your Subaru Forester’s windshield wiper system. It’s responsible for pumping the wiper fluid from the reservoir to your windshield, ensuring you have clear visibility while driving. When the pump stops working, it can be frustrating, and it can compromise your safety on the road. Fortunately, troubleshooting and fixing the issue is relatively easy, and it can be done in a few simple steps.

Troubleshooting the Issue

The first step in troubleshooting a wiper fluid pump issue is to determine what’s causing the problem. There are several potential causes for a pump that’s not working correctly, including a clog, a broken pump, or a blown fuse. Here’s how to diagnose and fix each of these issues:

Checking for a Clog

One of the most common causes of a wiper fluid pump that’s not working is a clog. Dirt, debris, and other contaminants can accumulate in the pump and prevent it from working correctly. To check for a clog, start by checking the fluid level in the reservoir. If the fluid level is low, add more fluid, and see if that solves the issue. If the fluid level is fine, move on to the next step.

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Next, inspect the spray nozzles to see if they’re clear. Use a pin or a needle to clear any debris that may be blocking the nozzle. If the nozzles are clear, you can move on to the next step.

Checking the Fuse

If the pump still isn’t working, the next step is to check the fuse. The wiper fluid pump is powered by a fuse, which can blow if there’s an electrical issue. Start by locating the fuse box in your Forester, which is typically located under the dashboard on the driver’s side. Check the owner’s manual for your vehicle to find the specific location of the wiper fluid pump fuse.

Once you’ve located the fuse, inspect it to see if it’s blown. If it is, replace it with a new fuse of the same amperage. If the fuse isn’t blown, move on to the next step.

Checking for Power to the Pump

If the pump still isn’t working, the next step is to check for power to the pump. Use a multimeter to check for voltage at the pump’s connector. If there’s no voltage, there may be an issue with the wiring, the switch, or the motor. If there’s voltage, the pump may be faulty and will need to be replaced.

Fixing the Issue

Once you’ve identified the cause of the issue, you can take steps to fix it. Here’s how to fix common issues with the wiper fluid pump in your Subaru Forester:

Unclogging the Pump

If the pump is clogged, you can try to unclog it manually. Start by locating the pump, which is typically located near the bottom of the windshield washer reservoir. Disconnect the pump’s wiring harness and remove the pump from the reservoir.

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Next, use a small screwdriver or a toothbrush to remove any debris that may be blocking the pump’s inlet or outlet. Reconnect the wiring harness, and test the pump to see if it’s working correctly. If it’s still not working, it may be time to replace the pump.

Replacing the Fuse

If the fuse is blown, you can replace it with a new fuse of the same amperage. The fuse box in your Forester should have spare fuses available, or you can purchase new fuses at an auto parts store. Once you’ve replaced the fuse, test the pump to see if it’s working correctly.

Replacing the Pump

If the pump is faulty, it will need to be replaced. Start by purchasing a new pump from an auto parts store or online. Once you have the new pump, disconnect the old pump’s wiring harness and remove the pump from the reservoir. Install the new pump in the reservoir, and reconnect the wiring harness.

Test the pump to see if it’s working correctly. If it is, you’re good to go! If not, there may be an issue with the wiring, the switch, or the motor that will need to be inspected by a professional mechanic.

Preventing Issues

To prevent wiper fluid pump issues from occurring in the future, it’s essential to maintain and inspect your Forester’s wiper system regularly. Here are some tips to keep your wiper fluid pump in good working order:

  • Check the fluid level regularly and top it off as needed.
  • Inspect the spray nozzles to ensure they’re clear of debris.
  • Check the fuses periodically to ensure they’re not blown.
  • If you notice any issues with the wiper system, address them promptly to prevent further damage.
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By taking these steps, you can keep your wiper fluid pump working correctly and ensure you have clear visibility while driving.

Conclusion

The wiper fluid pump is an essential component of your Subaru Forester’s windshield wiper system. If it stops working, it can be frustrating and compromise your safety on the road. Fortunately, troubleshooting and fixing the issue is relatively easy, and with regular maintenance and inspection, you can prevent issues from occurring in the first place. By following these steps, you can diagnose and fix wiper fluid pump issues and keep your Forester’s wiper system in good working order.

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Peter Banks

With years of experience as a professional mechanic and Subaru specialist, Peter is one of the most respected members of our team. He's written several articles on Subaru maintenance and repair, and his advice and tips are always practical and helpful. When he's not working on cars, he enjoys cooking and trying out new recipes.

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