Xiaomi Mi Robot Vacuum Pro SKV4093GLError 4Error 4 — cause and how to fix it
Error code: Error 4
Error 4 is a classic main brush motor failure, often caused by hair buildup burning out the motor.
How to fix Mi Robot Vacuum Pro SKV4093GL Error 4
- 1
Remove the main brush and check if the gears turn freely; if they don't, the motor assembly is toast.
- 2
A replacement motor unit is easily available for $12-18.
What this repair uses
Xiaomi Mi Robot Vacuum main brush motor
Take it out, clean it, and seat it again before you replace it. If the error stays, this is the part to change.
Frequently asked questions
What does Xiaomi Mi Robot Vacuum Pro SKV4093GL Error 4 mean?
Error 4 is a classic main brush motor failure, often caused by hair buildup burning out the motor.
Is this a hard repair to do myself?
Most of the steps above take 20-40 minutes with basic tools like a screwdriver. If you'd rather not open the unit yourself, contact the official support line below instead.
What part do I need?
You'll need a Xiaomi Mi Robot Vacuum main brush motor. Compatible aftermarket parts are widely available on AliExpress and typically cost $8-60 depending on the part.
How do I contact Xiaomi support?
Xiaomi Korea unified its customer service line to 070-8015-1154 starting November 2025. Phone: 070-8015-1154
Official support
Xiaomi Korea unified its customer service line to 070-8015-1154 starting November 2025.
Online support
Open support page →