IDB family
IDB_a042_btcActive
Not Available
What does the IDB_a042_btcActive alert mean?
Brake Traction Control (BTC) control is active.
What you'll see in your Tesla
- Not Available
What triggers it
The IDB has begun actuating BTC requests.
When it clears
All wheels have exited BTC control.
Potential impact
The Integrated Dynamic Brake (IDB) is actuating an external request to build brake torque at one or more wheels to control wheel spin from motor torque.
Affected models
Model Y 2025+
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.