Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual: Brake System Control Module "A" System Internal Failure (C059704,C059746,C13CF1C,C13D41C)

Lexus RX (RX 350L, RX450h) 2016-2023 Repair Manual / Brake / Parking Brake / Electric Parking Brake System / Brake System Control Module "A" System Internal Failure (C059704,C059746,C13CF1C,C13D41C)

DESCRIPTION

The following DTCs are stored when a malfunction occurs in the skid control ECU (brake actuator assembly).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Memory

Note

C059704

Brake System Control Module "A" System Internal Failure

Skid control ECU (brake actuator assembly) internal malfunction

Skid control ECU (brake actuator assembly)

DTC stored

An electric parking brake system malfunction is displayed on the multi-information display.

C059746

Brake System Control Module "A" Calibration / Parameter Memory Failure

Skid control ECU (brake actuator assembly) internal malfunction

Skid control ECU (brake actuator assembly)

DTC stored

An electric parking brake system malfunction is displayed on the multi-information display.

C13CF1C

Left Electric Parking Brake Actuator Current Sensor Circuit Voltage Out of Range

Skid control ECU (brake actuator assembly) internal malfunction

Skid control ECU (brake actuator assembly)

DTC stored

An electric parking brake system malfunction is displayed on the multi-information display.

C13D41C

Right Electric Parking Brake Actuator Current Sensor Circuit Voltage Out of Range

Skid control ECU (brake actuator assembly) internal malfunction

Skid control ECU (brake actuator assembly)

DTC stored

An electric parking brake system malfunction is displayed on the multi-information display.

CAUTION / NOTICE / HINT

NOTICE:

  • The electric parking brake may still operate up to 20 seconds after the engine switch is turned off. Before disconnecting connectors or fuses, turn the engine switch off and wait 20 seconds or more.
  • After replacing the skid control ECU (brake actuator assembly), perform "Calibration".

    Click here

  • When replacing the skid control ECU (brake actuator assembly), operate the electric parking brake switch (electric parking brake switch assembly) as the parking brake indicator light (red) blinks when the engine switch is first turned on (IG).

PROCEDURE

1.

REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)

(a) Replace the skid control ECU (brake actuator assembly).

Click here

NEXT

END

    Diagnostic Trouble Code Chart
    DIAGNOSTIC TROUBLE CODE CHART Electric Parking Brake System DTC No. Detection Item Memory Note Link C059704 Brake System Control Module "A" System Internal Failure DTC stored An e ...

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