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

Multiplex network master switch assembly

Driver door control switch on the multiplex network master switch assembly locks or unlocks all doors.

Power window regulator switch assembly

Front passenger door control switch on the power window regulator switch assembly locks or unlocks all doors.

Door courtesy light switch assembly

Front door lock with motor assembly LH

Front door lock with motor assembly RH

Rear door lock assembly LH/RH

Back door lock assembly

Built-in motor locks or unlocks the door.

Manual lock and unlock function

This function can lock or unlock all of the doors by the door control switch operation.

Key-linked lock and unlock function

This function, which is linked with the mechanical key cylinder, can lock or unlock all of the doors when a lock or unlock operation is performed.

Manual unlock prohibition function

When the condition below is met, unlocking the vehicle using the door control switch will be prohibited:

Key lock-in prevention function

When the key is in the vehicle, performing the door lock operation will not lock the door.

Key-linked 2-step unlock function

Unlocks only the driver door by turning the key cylinder once and unlocks all of the doors by turning it twice.

Collision door lock release

If the SRS has been deployed and the main body ECU (multiplex network body ECU) has detected the signal that is output from the airbag sensor assembly, the main body ECU (multiplex network body ECU) will unlock all doors.

Shift-linked automatic door lock function*

When the conditions listed below are met consecutively, this function causes all of the doors to be automatically locked:

Speed-sensitive automatic door lock function*

When the conditions listed below are met consecutively, this function causes all of the doors to be automatically locked:

Shift-linked automatic door unlock function*

When the conditions listed below are met consecutively, this function causes all of the doors to be automatically unlocked:

Driver door-linked automatic door unlock*

all of the doors are unlocked automatically when the driver door is opened within approximately 43 seconds of the engine switch being turned from on (IG) to off.