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Home >> Lexus >> 2021 >> LS 500h RWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/O Advanced Park) - Diagnostic Codes (1 Of 3) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Advanced Park) >> DTC C1249: Open Circuit in Stop Light Switch Circuit; DTC P0573: Brake Switch "A" Circuit High [10/2020 - 10/2023] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

P0572

Stop light switch assembly voltage Higher than 4.07 V, and less than 7.5 V
P0573

Stop light switch assembly voltage when decelerating vehicle from 30 km/h (18.65 mph) or more to 3 km/h (1.87 mph) 7.5 V or more
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