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Home >> Lexus >> 2019 >> LS 500 Base, AWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/ Vacuum Brake Booster) - Diagnostic Codes (1 Of 4) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/ Vacuum Brake Booster) >> DTC C0040-9E: Brake Pedal Switch "A" Stuck On; DTC C0040-9F: Brake Pedal Switch "A" Stuck Off [09/2018 - 10/2023] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:

After replacing the skid control ECU (brake actuator assembly), perform "Calibration".

Refer to CALIBRATION [09/2018 - 10/2023]

HINT: 

When P0571-11 and/or P0571-13 is output together with C0040-9E and/or C0040-9F, inspect and repair the trouble areas indicated by P0571-11 and/or P0571-13 first.

For P0571-11: Refer to DTC P0571-11: Brake Switch "A" Circuit Short to Ground [09/2018 - 10/2023]

For P0571-13: Refer to DTC P0571-13: Brake Switch "A" Circuit Open [09/2018 - 10/2023]

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