IBST family
IBST_a147_PSCMotorSizeReadFault
Power braking assist reduced
What does the IBST_a147_PSCMotorSizeReadFault alert mean?
iBooster (IBST) detected the value in the Non-volatile Memory (NvM) block 'PSC_MotorSize' is incorrect or 'empty'.
What you'll see in your Tesla
- Power braking assist reduced
- Braking may require increased effort
What triggers it
IBST detected the value in the NvM block 'PSC_MotorSize' is incorrect or 'empty'.
When it clears
Write the correct motor size that is relevant for the project in the NvM block and restart the system.
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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