Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Network Gateway Ecu

Lost Communication with Power Source Control (B278C)

DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and power management control ECU stops for 10 seconds or more. DTC No. Detection Item ...

Components

COMPONENTS ILLUSTRATION *1 ECU INTEGRATION BOX RH *2 NETWORK GATEWAY ECU ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Front Camera System: Buzzer Circuit Short to Battery (C1A4A12)
DESCRIPTION If the forward recognition camera detects a short to +B in the buzzer circuit, it will store DTC C1A4A12. DTC No. Detection Item DTC Detection Condition Trouble Area C1A4A12 Buzzer Circuit Short to Battery While the skid control buzzer assembly is sounding, the forward r ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Smart Access System With Push-button Start (for Entry Function): Back Door Entry Unlock Function does not Operate
DESCRIPTION If the entry unlock function does not operate for the back door only, but the entry lock function operates, the request code is being transmitted properly from the back door. In this case, there may be a problem related to the open switch (connection between the back door opener switch a ...