IBST_a026_ecuBistCmdTestFault

iBooster (IBST) has detected (contrary to specifications) the Built-In Self-Test (BIST) state machine of system Integrated Circuit (IC) is started by an incorrect BIST command.

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) has detected (contrary to specifications) the Built-In Self-Test (BIST) state machine of system Integrated Circuit (IC) is started by an incorrect BIST command.

Cause

IBST detects the BIST state machine of system IC is started by an incorrect BIST command.

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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