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Home >> Lexus >> 2024 >> ES 300h F Sport Handling >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (A25A-FXS) - Diagnostic Codes (20 Of 20) & Circuit Tests (1 Of 2) >> SFI System >> DTC U0129-87: Lost Communication with Brake System Control Module Missing Message [08/2020 - 08/2021] >> Typical Enabling Conditions
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Typical Enabling Conditions

Monitor runs whenever the following DTCs are not stored None
Both of the following conditions are met -
Auxiliary battery voltage 10 V or higher
Power switch On (IG)
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