Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Lost Communication with Multi-axis Acceleration Sensor Module (U0125,U0129)

Yaw Rate Sensor Module Malfunction (B1798,B1799)

DESCRIPTION The occupant detection ECU receives signals from the acceleration sensor (airbag sensor assembly*1 or yaw rate sensor assembly*2) and skid control ECU via CAN communication. DTC No. D ...

Trouble in Passenger Airbag ON/OFF Indicator

DESCRIPTION The occupant classification system detects the front passenger seat condition. It then displays the instrument panel passenger airbag assembly and front seat cushion airbag assembly RH con ...

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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 > Airbag System: Short in Rear Side Squib RH Circuit (B1850-B1853)
DESCRIPTION The rear side squib RH circuit consists of the airbag sensor assembly and rear seat airbag assembly RH. The airbag sensor assembly uses this circuit to deploy the airbag when deployment conditions are met. These DTCs are stored when a malfunction is detected in the rear side squib RH cir ...