Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Introduction

General

How To Troubleshoot Ecu Controlled Systems

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Immobiliser System: Engine Immobiliser System Circuit Short to Battery (B279A12)
DESCRIPTION If the communication line (IMI - EFIO) between the ECM and ID code box (immobiliser code ECU) is stuck high, the ECM will store this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Note B279A12 Engine Immobiliser System Circuit Short to Battery The com ...

Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Seat Belt Warning System: Front Passenger Side Seat Belt Warning Light Malfunction
DESCRIPTION When the engine switch is turned on (IG), the occupant detection ECU sends signals to the airbag sensor assembly to indicate the state of the front seat inner belt assembly RH and also whether the front passenger seat is occupied. The airbag sensor assembly sends those signals to the com ...