IBST family
IBST_a067_tempSensImplausVoltage
Power braking assist reduced
What does the IBST_a067_tempSensImplausVoltage alert mean?
iBooster (IBST) detected Brushless Motor (BLM) temperature sensors are not plausible voltage values.
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
IBST detects a BLM temperatures are not plausible voltage value.
When it clears
iBooster can not recover from this condition. iBooster replacement may be required.
Potential impact
IBST may not operate as expected.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
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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.