LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2021 >> RX 450h Base >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Pre-Collision System (Diagnostic Codes & Circuit Tests) >> Pre-Collision System >> DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed [08/2019 - ] >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC U0300-51: Internal Control Module Software Incompatibility Not Programmed [08/2019 - ]: Description

The forward recognition camera receives vehicle information from the hybrid vehicle control ECU assembly via CAN communication.

If the forward recognition camera cannot store the vehicle information, it will store this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area
U0300-51 Internal Control Module Software Incompatibility Not Programmed When the power switch is on (IG) for 3 seconds or more, the vehicle information sent from the hybrid vehicle control ECU assembly cannot be verified by the forward recognition camera for 3 seconds or more.
  • Hybrid control system
  • Forward recognition camera
  • Hybrid vehicle control ECU assembly