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Home >> Lexus >> 2018 >> RX 450h Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Exterior Lights >> Lighting System (W/ Automatic Headlight Beam Level Control System) (Diagnostic Codes) (1 Of 2) >> LIGHTING SYSTEM (w/ Automatic Headlight Beam Level Control System) >> DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [08/2019 - ] >> Description
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DTC U0125-87: Lost Communication with Multi-axis Acceleration Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid Powertrain Control Module Missing Message [08/2019 - ]: Description

These DTCs are stored if a CAN communication malfunction occurs between the forward recognition camera and other ECUs.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from
U0125-87 Lost Communication with Multi-axis Acceleration Sensor Module Missing Message The forward recognition camera does not receive data from the yaw rate sensor assembly for approximately 5 seconds or more.
  • CAN communication system
  • Yaw rate sensor assembly
 Front Recognition Camera (Front Lighting Control)
U0129-87 Lost Communication with Brake System Control Module Missing Message The forward recognition camera does not receive data from the skid control ECU assembly for approximately 5 seconds or more.
  • CAN communication system
  • Skid control ECU assembly
 Front Recognition Camera (Front Lighting Control)
U0140-87 Lost Communication with Body Control Module Missing Message The forward recognition camera does not receive data from the main body ECU (multiplex network body ECU) for approximately 5 seconds or more.
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
 Front Recognition Camera (Front Lighting Control)
U0293-87 Lost Communication with Hybrid Powertrain Control Module Missing Message The forward recognition camera does not receive data from the hybrid vehicle control ECU assembly for approximately 5 seconds or more.
  • CAN communication system
  • Hybrid vehicle control ECU assembly
 Front Recognition Camera (Front Lighting Control)
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