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

SYSTEM DESCRIPTION

GENERAL

(a) The occupant detection ECU estimates the weight of an occupant based on signals received from the 2 occupant classification sensors. The occupant detection ECU determines whether the front passenger seat is occupied and classifies the occupant based on the estimated weight, passenger side buckle switch state, acceleration sensor signal and vehicle speed signal. The result determined by the occupant detection ECU is sent to the airbag sensor assembly via CAN communication.

(b) The airbag sensor assembly controls the operation of the passenger airbag ON/OFF indicator and restricts the operation of the instrument panel passenger airbag assembly and front seat cushion airbag assembly RH.