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Home >> Lexus >> 2019 >> LC 500h >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (9 Of 9) & Circuit Tests (1 Of 2) >> SFI System >> DTC U0129-87: Lost Communication with Brake System Control Module Missing Message [09/2018 - ] >> Typical Enabling Conditions

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)