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Home >> Lexus >> 2015 >> GS 350 Base, RWD >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System - Diagnostic Codes & Circuit Tests >> Pre-Collision System >> DTC C1A0A: Front Radar Sensor Region Code Mismatch [09/2014 - 10/2015] >> Description
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DTC C1A0A: Front Radar Sensor Region Code Mismatch [09/2014 - 10/2015]: Description

The driving support ECU uses the millimeter wave radar sensor to detect obstacles in front of the vehicle. Based on this information, the driving support ECU sends pre-collision control operation signals.

When the millimeter wave radar sensor is replaced with a new one, it acquires the country specification information from the driving support ECU. Also, when the driving support ECU is replaced with a new one, it receives country specification information from the main body ECU. When country specification information in the sensor, ECU and/or main body ECU do not match, DTC C1A0A is stored.

DTC Code DTC Detection Condition Trouble Area
C1A0A While the initial check is running, the engine switch is on (IG) and the pre-collision system is operating, the country specification information in the driving support ECU and the front millimeter wave radar sensor do not match for 2 seconds or more.
  • Millimeter wave radar sensor assembly
  • Driving support ECU