IBST_a028_ecuBistFaultCtrFault

iBooster (IBST) Built-In Self-Test (BIST) did not electrically switch off after too many received and incorrect BIST commands.

Live incidence rate

<0.01% (Extremely rare)

Vehicle messages

Power braking assist reduced
Braking may require increased effort

Impact

IBST may not operate as expected.

Description

iBooster (IBST) Built-In Self-Test (BIST) did not electrically switch off after too many received and incorrect BIST commands.

Cause

IBST detects BIST did not electricallt switch off after too many incorrect BIST commands.

Clear condition

iBooster can not recover from this condition. iBooster replacement may be required.

Models

Cybertruck, Model 3 2017-2023, Model 3 2024+, Model S 2021+, Model X 2021+, Model Y, Model Y 2025+

Visibility

customer, service-fix

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