Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: 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
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- 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
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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 ...
Vehicle Control History
VEHICLE CONTROL HISTORY DESCRIPTION
Vehicle Control History is a function that captures and stores ECU data when triggered by specific vehicle behavior.
If the customer states that the engine sta ...
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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