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Home >> Toyota >> 2021 >> Mirai XLE >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Lighting System (W/ Headlight Ecu) - Diagnostic Codes (1 Of 2) >> LIGHTING SYSTEM (w/ Headlight ECU) >> DTC B241A: Rear Height Control Sensor [11/2021 - 12/2023] >> Description

DTC B241A: Rear Height Control Sensor [11/2021 - 12/2023]: Description

The headlight ECU sub-assembly LH determines the vehicle height and performs automatic headlight beam level control based on signals from the rear height control sensor sub-assembly LH via direct line.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority Note
B241A Rear Height Control Sensor Detection condition: 
  1. The ignition switch is ON

Malfunction status: 
  1. Abnormal vehicle height continuously detected

Malfunction duration: 
  1. 10 seconds or more
  • Rear height control sensor sub-assembly LH
  • Harness or connector
  • Headlight ECU sub-assembly LH
HL AutoLeveling A for Mono Camera Type
DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Priority Note
B241A Rear Height Control Sensor Detection condition: 
  1. The ignition switch is ON

Malfunction status: 
  1. Abnormal vehicle height continuously detected

Malfunction duration: 
  1. 10 seconds or more
  • Rear height control sensor sub-assembly LH
  • Harness or connector
  • Headlight ECU sub-assembly LH
AFS A for Stereo Camera Type