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Home >> Lexus >> 2021 >> RC 350 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Dynamic Radar Cruise Control System - Diagnostic Codes (1 Of 2) >> Dynamic Radar Cruise Control System >> DTC C1A4A: Skid Control Buzzer Circuit [11/2017 - 09/2020] >> Description

DTC C1A4A: Skid Control Buzzer Circuit [11/2017 - 09/2020]: Description

Based on dynamic radar cruise control system operation, the driving support ECU assembly provides warnings to the driver by sounding the skid control buzzer assembly.

DTC C1A4A is stored when a malfunction is detected in the skid control buzzer circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1A4A Skid Control Buzzer Circuit While the vehicle speed is 36 km/h (22 mph) or more and the dynamic radar cruise control system is operating, the driving support ECU assembly detects a malfunction in the skid control buzzer circuit for approximately 0.3 seconds or more.
  • Skid control buzzer assembly
  • Harness or connector
  • Driving support ECU assembly