Yeah, this one's common. The loud rattling is almost always something large and hard—like a coin, a small toy, or a chunk of debris—stuck in the brush roll or the hose.
Fix:
- Unplug the vacuum.
- Flip it over and check the brush roll. Manually spin it and look for any obstructions wedged in the bristles or around the ends. Pull anything out.
- If that's clear, detach the hose and wand from the canister. Shine a light down the hose and look through the wand. You might be able to see the blockage.
- If you can't see it, you'll need to manually remove it. The hose is designed for you to clear blockages as a maintenance measure. Work your hand along the hose to feel for the object, or use a long, flexible tool to gently push it through.
If that didn't work: The noise could also be a damaged or worn brush roll bearing. If the brush roll spins freely with no visible blockage but still makes a grinding noise, it might need replacement.
Heads up: Always check for blockages after vacuuming up larger debris. Regularly cleaning the brush roll and checking the hose path prevents this noise and keeps suction strong.