How to Fix / Troubleshooting

Safety first: Remove the battery immediately to prevent further damage.

Isolate source: Run the vacuum briefly without the floor nozzle (if safe) to determine if noise is from the main motor or brush head.
Inspect brush roll: Remove the brush and spin it by hand. Replace if rough, noisy, or seized.
Check for debris: Look into the motor intake and brush housing for foreign objects rubbing against moving parts.
Do not lubricate sealed bearings: If motor bearings are noisy, the motor assembly should be replaced rather than oiled.

Persistent squealing or grinding from the motor area requires motor replacement by a technician.

Vacuum makes loud high-pitched squealing or grinding noise during operation.

Possible Causes