Cleaning Cliff Sensors On a Roomba in 4 Easy Steps

Last updated on January 8th, 2024

Cleaning cliff sensors on a Roomba is an important task that must be carried out periodically. Because these sensors prevent your vacuum from falling down the stairs. If these are dirty, Roomba faces issues in navigation. You might have seen a horrifying video of a Roomba zooming off the stairs. That’s because of faults in these sensors.

So clean the cliff sensors regularly with a microfiber cloth and cleaning solution. Don’t use any harsh material on the sensors. Keep them from getting scratched or other kind of damage. Don’t use water directly on the sensors, but you can use a dampened cloth.

Cleaning cliff sensors with a microfiber cloth
Cleaning cliff sensors with a microfiber cloth

You need to start by locating the cliff sensors on your Roomba. Let’s find out how to do that.

Locate cliff sensors on the Roomba

Turn your Roomba upside down and place it on a plain surface. Don’t forget to put a cloth or newspaper under the vacuum to avoid scratching the surface. On the upside-down Roomba, look at the rim of the base. There, you will find 4 to 6 curved rectangles. These are your cliff sensors.

Note: There could be 4 or 6 cliff sensors on your vacuum, depending on the model you have.

Now that you have located these sensors in your vacuum, it’s time to start cleaning. But, before you start, there are certain things you should keep in mind.

Things to keep in mind

You must follow these important instructions to keep these sensors in good shape. Avoiding them could lead to damage, which you, of course, don’t want. So let’s take a look at what those instructions are:

  • Turn off the Roomba: Before you start cleaning, turn off the Roomba. Touching the sensors when the vacuum is on could confuse it, and it might have issues with navigation.
  • Don’t clean them mid-cycle: Don’t pick up your Roomba and start cleaning the sensors when it’s in the middle of a cleaning cycle. This will highly confuse the vacuum.
  • Don’t use liquids directly on the sensors: Avoid any direct contact between the sensors and liquids. That includes water and cleaning solutions. Rather, dampen a microfiber cloth with water or solution and then use it.
  • Don’t scratch the cliff sensors: Don’t let them come in contact with any rough surfaces while cleaning them. It could scratch and damage the surface of the sensors, and they will thus malfunction.

Keep these things in mind while cleaning the cliff sensors on your Roomba. They will take you a long way.

Now, gather all the necessary items required for cleaning.

Tools required to clean cliff sensors

Make sure you gather these items before starting the cleaning process because you don’t want to get up in the middle just because you forgot to bring something. So, to clean, you will need the following:

  • A microfiber cloth
  • Cleaning solution (optional)
A microfiber cloth
A microfiber cloth
Cleaning solution
Cleaning solution

The microfiber cloth should be clean, dry, and soft. You can simply use the cloth to clean the sensors. But if you feel the need, you can spray a cleaning solution on the cloth before cleaning.

Now, let’s start the actual cleaning process.

Also Read: Complete Roomba Maintenance Guide

Cleaning Roomba cliff sensors

Follow the 4 easy steps given below for cleaning cliff sensors on a Roomba:

Step 1: Locate the sensors on the Roomba.

Step 2: Spray a cleaning solution on a microfiber cloth or slightly dampen the microfiber cloth. (Optional step)

Step 3: Clean each sensor with the microfiber cloth in a circular motion.

Step 4: Check for residues and scratches and clean any residue left behind.

This is all you need to do to clean the cliff sensors on your Roomba. After cleaning them, if you still feel they are not working as they should, contact iRobot Customer Care for help.

Final Thoughts

Cliff sensors are one of the easiest parts to clean. The process of cleaning cliff sensors on a Roomba is pretty simple, and you also need a minimal amount of items to do it. Remember you have to clean them at least once a month. You won’t need to replace them, but regular cleaning is very essential.


What are cliff sensors on Roomba?

Cliff sensors are the ones responsible for preventing the vacuum from falling down the stairs.

Can I use water to clean cliff sensors?

No, you cannot wash cliff sensors with water, but you can use a damp cloth to wipe them.

Photo of author

Siddhi Gurav

She is the editor and content writer at Smart Home Bulls. Siddhi merges her passion for language with SEO expertise. With 4 years of experience as a creative writer and a passion for smart home technology, she fits in perfectly at Smart Home Bulls. Her wide experience in content marketing has been an excellent addition to our team.

Leave a Comment