Question about Roomba Robotic Floor Bagless Vacuum

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Roomba Discovery wiggles back and forth and turns over and over

My 8 month old Roomba Discovery has just started moving forward and "wiggling" back and forth in the middle of the room when you turn it on, goes about 2 feet, then turns and wiggles back to where it started 2' away. Wheels are cleared of hair, etc, blew it out with compressed air for dust on sensors, etc. It still responds to the bumber, turns 45 degrees or so then starts wiggling again. Any ideas?

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  • suewooley Jul 15, 2008

    I'm having the same problem. My Roomba acts like it's hitting obstacles when nothing is there. It backs up a few inches and then goes forward a few inches and then does the same thing again and again.

  • bobfiala
    bobfiala Nov 14, 2008

    Mine did the same thing, just before the brushes stopped turning. No amount of cleaning, including compressed air, would help.

  • dcbetjes Jan 03, 2009

    Same problem with mine, 8 months old also!!!


    Does not want to do anything else but jerkingly going back and forth!!
    Please help!!!!!

  • tivolo Jan 13, 2009

    Same thing here with my Discovery. I've thoroughly cleaned the sensors and brushes but nothing has helped. It goes forward a few inches, backs up, spins, repeats... basically staying in one spot. Unfortunately, it's out of warranty so it's just a doorstop now.

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No matter your model Roomba, this occurs when Roomba has gone "crazy." Its brain is no longer working properly and you can usually tell this when you've cleaned the dickens out of it a few times and the behavior is still the same. There's only one possible user fix and that is to take out the battery, hold down the power button for 20-30 seconds then reinsert the battery.

If that doesn't do the trick, IRobot might send you something called an Ozmo which you put in the data port to rewrite Roomba's brain. Unfortunately this requires it to be under warranty unless you get lucky. Good luck, all!

Posted on Jan 27, 2009

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In the Roomba service manual it says that this is the result of a wheel drop switch problem - it may have failed (replace), worked loose (fix with hot-melt glue) or be dirty (clean with alcohol and blow dry). However I got the same symptoms on my Roomba Sage and the problem was that only one side of the brush guard had clicked back into place after I had cleaned the brush and roller. The other side projected down just enough to trigger the wheel drop switch. An easy fix, which makes a nice change!

Posted on Feb 27, 2013

  • peter549 Feb 27, 2013

    In the Roomba service manual it says that this is the result of a wheel drop switch problem - it may have failed (replace), worked loose (fix with hot-melt glue) or be dirty (clean with alcohol and blow dry). However I got the same symptoms on my Roomba Sage and the problem was that only one side of the brush guard had clicked back into place after I had cleaned the brush and roller. The other side projected down just enough to trigger the wheel drop switch. An easy fix, which makes a nice change!

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