Why is my Roomba Brush Not Spinning? Easy Ways to Fix It

Your iRobot Roomba is an incredible technology that helps keep your home clean. But like any machine, it can occasionally run into problems. One of the most common issues is when the side brush is not spinning.

There are a few different reasons why this might happen, but thankfully there are also a few easy ways to fix it. This article will cover some of the most common causes and how to fix your Roomba brush not spinning.

One of the most common reasons Roomba brushes stop spinning is that they are tangled with debris or hair. This can happen if you haven’t cleaned the brushes in a while or if you have a lot of pet hair in your home. To fix this, remove the brushes and clean them off. You can use a brush or a vacuum cleaner to remove any debris caught in the bristles.

Why is my Roomba Brush Not Spinning?
Why is my Roomba Brush Not Spinning?

Another common reason for the Roomba brush not spinning is because the gears that drive them are damaged or stripped. This can happen if you accidentally drop your Roomba or if it’s been used a lot over time. If you think this might be the problem, you can try opening up the case and looking at the gears. If they look damaged, you’ll need to replace them.

In some cases, the problem might be with the side brush motor. This is usually only the case if the brushes have stopped spinning and you can’t get them to start again. If this is the case, you’ll need to replace the Roomba brush motor.

How to Fix a Roomba Side Brush Not Spinning

Remove any debris from beneath the side brush

The first thing you’ll want to do to fix a Roomba brush not spinning is check and see if it’s tangled with any debris. If it is, remove the brush using a tiny screwdriver and clean it off. 

Once you’ve removed all the hair and dust that has settled, reinstall the side brush and see whether it spins freely. Then, you’re ready to go if it works normally. However, the side brush module must be replaced or repaired if it doesn’t turn after this.

Roomba iRobot side brush care

Remove the dirt from inside the gearbox

First, remove the back cover. You can do this by unscrewing the side brush and then removing all the screws you see on the back cover. Once it is off, you’ll see that two screws attach to the side brush module. Remove them and lift the module.

Next, you’ll find a screw holding the cover on the gearbox. Remove it and then lift the cover. Once you have it open, you will see gears inside. Remove each gear one at a time and pick up any dust or hair you can find. Gunk buildup will prevent gears from turning properly if not cleaned regularly.

If any gears look stripped or damaged, you’ll need to replace them. The good news is that you can buy a replacement side brush module with all new gears.

Lubricate the side brush motor shaft with a suitable lubricant

Ensure the side brush motor is properly lubricated to keep it running smoothly. A tiny quantity of lube should be used on the side brush motor. A small amount of oil should also be applied to a small area on the motor shaft. Finally, carefully examine the side brush module and turn or rotate it with your hands to ensure it spins freely.

When you’ve cleaned and lubricated the entire side brush gearbox, it’s time to reassemble everything back into place. Attach the side brush and try turning it by hand before reassembling the side brush module into the unit. If it turns freely, your side brush is in good working order.

Is your Roomba Brush Not Spinning after following all the tips?

If none of the above solutions work, you’ll likely need to replace the entire side brush module. This is usually only necessary if the side brush has stopped spinning entirely and you can’t get it to start again.

Check the prices on Amazon

Roomba iRobot side brush module removal and installation

Contact Customer Support

If your Roomba side brush is still not spinning after trying these solutions, there may be a more severe problem with the robot vacuum. In this case, it’s best to contact customer service for help.

Frequently Asked Questions

What is the Roomba’s side brush for?

The Roomba’s side brush is used to sweep debris away from walls and into the path of the vacuum cleaner so that it can be suctioned up.

How often should I clean my Roomba side brush?

It’s a good idea to clean your Roomba side brush every few weeks or whenever it starts to look dirty. You can remove the brush and clean it with any cleaning tool.

How often should you replace a Roomba side brush module?

In general, you should replace your Roomba brush module every six months to 1 year. However, if it’s damaged or wears out sooner, you’ll need to replace it sooner.

How much does it cost to replace a Roomba side brush?

A replacement Roomba side brush typically costs between $10 and $20. However, the exact price will vary depending on the model and where you purchase it.


The best way to keep your robot vacuum running like new is by following simple maintenance tips. First, regularly remove any dirt collected around the brushes and wheels. Second, clean the charging contact points on your robot vacuum cleaner and the dock station since it may cause your robot vacuum not to charge. Doing so can help ensure that your vacuum continues to run smoothly and picks up all the dirt and dust it’s supposed to!

Have you had trouble with your iRobot Roomba brush not spinning? Let us know in the comments below.

Latest posts

Leave a Comment