Is Your Roomba i3 Side Brush Not Spinning? Here’s How to Fix It


If your Roomba i3 side brush isn’t spinning, it’s time to take a look at it and see if you can fix the problem. It’s not the most difficult thing in the world to do, but it’s not as easy as just popping it back in and pushing a button. In this article, we’ll show you how to identify and solve the problem so your Roomba can get back to work.

Common issues for brush not spinning

  1. Why is the side brush important?

The side brush is important because it helps the robot vacuum collect dirt and debris from along the walls and edges of your room. If the side brush isn’t spinning, it can’t do its job! Here are a few tips for fixing a side brush that isn’t spinning.

  1. What could be causing the side brush to stop spinning?

One potential issue could be that the side brush is dirty and needs to be cleaned. If the bristles are clogged with hair, dust, and other debris, they won’t be able to spin correctly and will eventually stop spinning altogether. If you think this might be the case, try cleaning the side brush as described in our article on how to clean your Roomba i3. Another possibility is that the side brush gearbox is malfunctioning. In this case, you’ll need to replace the gearbox. For more information, see our article on how to replace the side brush gearbox on your Roomba i3.

  1. How to fix a roomba i3 side brush that isn’t spinning

If your Roomba i3 side brush isn’t spinning, don’t worry—you can fix it! The most likely cause of this issue is that the bristles on the brush have become clogged with hair, dust, and other debris. To clean the brush, you’ll need to remove it from the robot vacuum. Once it’s out, use a small brush or your fingers to dislodge any dirt or debris that’s caught in the bristles. You can also use a vacuum cleaner to clean the brush (just be careful not to damage it). Once the brush is clean, reattach it to the robot vacuum and test it out. If it still isn’t spinning, you may need to replace it.

  1. How to prevent the side brush from stopping in the future

If you’re experiencing this problem, there are a few things you can do to prevent it from happening again. First, make sure that the side brush is properly aligned with the robot. If it appears to be crooked, simply adjust it until it’s in the correct position. You can also try cleaning or lubricating the side brush’s bearings, as this might help to keep it spinning smoothly. Finally, keep an eye on the Roomba’s bumper—if it’s too worn down, it might not be able to sufficiently push the side brush against the wall. If needed, you can replace the bumper yourself or take your robot to a professional for repairs.

  1. Other roomba i3 troubleshooting tips

If your Roomba i3 side brush isn’t spinning, there are a few troubleshooting tips you can try. First, check to make sure the rotating side brush is attached properly and that the wheel is turning freely. If it’s still not spinning, try cleaning the wheel and brush with a small brush or toothpick. If that doesn’t solve the issue, you might need to replace the side brush. Here are a few other tips to help you troubleshoot your Roomba i3:

  • Make sure the battery is fully charged
  • Clean the bin and filters regularly
  • Make sure the robot is on a level surface


Roomba is one of the most popular robotic vacuums on the market, and the i3 is one of the newer models. While it’s a great vacuum, there are times when things can go wrong. If your side brush isn’t spinning, don’t worry – we’re here to help. In this post, we’ll explain what could be causing the problem and how to fix it. We’ll also share some tips on how to prevent the side brush from stopping in the future.

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