MyTeslaMate
BMS family

BMS_u031_ReplaceSmartFuseSoon

Battery fuse requires replacement soon

What does the BMS_u031_ReplaceSmartFuseSoon alert mean?

The Battery Management System (BMS) has detected the HV battery pyro fuse is less than 6 months from end of life. The fuse must be replaced with a new self-powered hybrid pyro fuse.

What you'll see in your Tesla

  • Battery fuse requires replacement soon
  • OK to drive - Schedule service

What triggers it

Pyro fuse is less than 6 months from end of life.

When it clears

Pyro fuse is replaced with a self-powered hybrid pyro fuse.

Potential impact

Pyro fuse is no longer functional

Affected models

Model S 2012-2020 Model X 2015-2020

Track your Tesla's alerts automatically

Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.