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Home >> Lexus >> 2020 >> LS 500 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Gauges & Instrument Panels >> HEADUP Display System - Diagnostic Codes & Circuit Tests >> HEADUP Display System >> DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0103-87: Lost Communication with Gear Shift Control Module "A" Missing Message; DTC U0129-87: Lost Communication With Brake System Control Module Missing Message; DTC U0142-87: Lost Communication with Body Control Module "B" Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0163-87: Lost Communication with Navigation Control Module Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message; DTC U1104-87: Lost Communication with Driving Support ECU Missing Message; DTC U1110-87: Lost Communication with Clearance Sonar Module [09/2018 - 10/2023] >> Description
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DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0103-87: Lost Communication with Gear Shift Control Module "A" Missing Message; DTC U0129-87: Lost Communication With Brake System Control Module Missing Message; DTC U0142-87: Lost Communication with Body Control Module "B" Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U0163-87: Lost Communication with Navigation Control Module Missing Message; DTC U023A-87: Lost Communication with Image Processing Module "A" Missing Message; DTC U1104-87: Lost Communication with Driving Support ECU Missing Message; DTC U1110-87: Lost Communication with Clearance Sonar Module [09/2018 - 10/2023]: Description

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
U0100-87 Lost Communication with ECM/PCM "A" Missing Message
  • DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
  • Malfunction Status: Lost communication with ECM
  • Malfunction Duration: 3.6 seconds or more
  • ECM
  • CAN communication system
  • Meter mirror sub-assembly
DTC stored
U0103-87 Lost Communication with Gear Shift Control Module "A" Missing Message
  • DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
  • Malfunction Status: Lost communication with shift control ECU
  • Malfunction Duration: 5 seconds or more
  • Shift control ECU
  • CAN communication system
  • Meter mirror sub-assembly
DTC stored
U0129-87 Lost Communication With Brake System Control Module Missing Message
  • DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
  • Malfunction Status: Lost communication with skid control ECU
  • Malfunction Duration: 3.6 seconds or more
  • Skid control ECU
  • CAN communication system
  • Meter mirror sub-assembly
DTC stored
U0142-87 Lost Communication with Body Control Module "B" Missing Message
  • DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
  • Malfunction Status: Lost communication with main body ECU (multiplex network body ECU)
  • Malfunction Duration: 5 seconds or more
  • Main body ECU (multiplex network body ECU)
  • CAN communication system
  • Meter mirror sub-assembly
DTC stored
U0155-87 Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message
  • DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
  • Malfunction Status: Lost communication with combination meter assembly
  • Malfunction Duration: 5 seconds or more
  • Combination meter assembly
  • CAN communication system
  • Meter mirror sub-assembly
DTC stored
U0163-87 Lost Communication with Navigation Control Module Missing Message
  • DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
  • Malfunction Status: Lost communication with radio receiver assembly
  • Malfunction Duration: 5 seconds or more
  • Radio receiver assembly
  • CAN communication system
  • Meter mirror sub-assembly
DTC stored
U023A-87 Lost Communication with Image Processing Module "A" Missing Message
  • DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
  • Malfunction Status: Lost communication with object recognition camera (for Stereo Camera Type) or forward recognition camera (for Mono Camera Type)
  • Malfunction Duration: 5 seconds or more
  • Forward recognition camera

    (for Mono Camera Type)

  • Object recognition camera

    (for Stereo Camera Type)

  • CAN communication system
  • Meter mirror sub-assembly
DTC stored
U1104-87 Lost Communication with Driving Support ECU Missing Message
  • DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
  • Malfunction Status: Lost communication with driving support ECU assembly
  • Malfunction Duration: 5 seconds or more
  • Driving support ECU assembly (w/ Pre-collision System (for Stereo Camera Type))
  • CAN communication system
  • Meter mirror sub-assembly
DTC stored
U1110-87 Lost Communication with Clearance Sonar Module
  • DTC Detection Condition: IG+ voltage 9.5 to 11.5 V or higher
  • Malfunction Status: Lost communication with clearance warning ECU assembly
  • Malfunction Duration: 5 seconds or more
  • Clearance warning ECU assembly
  • CAN communication system
  • Meter mirror sub-assembly
DTC stored