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Home >> Lexus >> 2019 >> ES 350 Luxury >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Pre-Collision System - Diagnostic Codes) >> Pre-Collision System >> DTC C1425-71: Stop Light Relay Actuator Stuck [08/2021 - ] >> Description

DTC C1425-71: Stop Light Relay Actuator Stuck [08/2021 - ]: Description

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2024 Lexus ES 350, 2024 Lexus ES 300h, 2024 Lexus ES 250, 2023 Lexus ES 350, and 2023 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

For HV Model: 

  1. The skid control ECU (brake booster with master cylinder assembly) sends a stop light operation request signal to the stop light control relay (stop light switch assembly). When the skid control ECU (brake booster with master cylinder assembly) detects a malfunction relating to the stop light circuit, the forward recognition camera is notified via CAN communication, and C1425-71 is output.

For Gasoline Model: 

  1. The skid control ECU (brake actuator assembly) sends a stop light operation request signal to the stop light control relay (stop light switch assembly). When the skid control ECU (brake actuator assembly) detects a malfunction relating to the stop light circuit, the forward recognition camera is notified via CAN communication, and C1425-71 is output.
DTC No. Detection Item DTC Detection Condition Trouble Area
C1425-71 Stop Light Relay Actuator Stuck For HV Model: 
  1. Once 3 seconds elapse after turning the ignition switch to ON, the system receives a stop light circuit malfunction signal from the skid control ECU (brake booster with master cylinder assembly) for approximately 1 second or more.

For Gasoline Model: 
  1. Once 3 seconds elapse after turning the ignition switch to ON, the system receives a stop light circuit malfunction signal from the skid control ECU (brake actuator assembly) for approximately 1 second or more.
Electronically controlled brake system