Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: System Description

Outer rear view mirror assembly

Vertical mirror motor

Receives a signal from the outer mirror control ECU assembly and adjusts the mirror surface position vertically.

Horizontal mirror motor

Receives a signal from the outer mirror control ECU assembly and adjusts the mirror surface position horizontally.

Power retract mirror motor*1

Receives a signal from the outer mirror control ECU assembly, and retracts and returns the outer rear view mirror assemblies.

Mirror position sensor

Detects the mirror surface position. This information is sent to the outer mirror control ECU assembly.

Mirror heater

Receives a signal from the outer mirror control ECU assembly and operates the mirror heaters.

EC mirror cell

Varies reflection rate of the mirror through function of EC elements.

Outer mirror retractor*2

Power retract mirror motor

Receives a signal from the outer mirror control ECU assembly, and retracts and returns the outer rear view mirror assemblies.

Multiplex network master switch assembly

Mirror select switch

Consists of individual R and L switches. One must be on to operate the multiplex network master switch assembly.

Mirror adjust switch

Mirror R and L signals are sent to each outer mirror control ECU assembly from the mirror select switch.

After turning the mirror select switch R or L switch, on the right, left, up and down control switches can be operated to change the angle of the mirror.

Retractable outer mirror switch

Retracts and returns the outer rear view mirror assemblies. Mirror retract and return signals are sent to each outer mirror control ECU assembly from the main body ECU (multiplex network body ECU).

Auto retractable outer mirror switch

Built into the multiplex network master switch assembly and sends the mirror AUTO retract switch signal to the main body ECU (multiplex network body ECU) via LIN communication.

Seat memory switch

When the seat memory M1, M2 or M3 switch is pressed while the SET switch is being pressed, or the M1, M2 or M3 switch is pressed within 3 seconds of the SET switch being pressed, a signal is sent to the outer mirror control ECU assembly (driver door), which records the mirror surface position.

When the seat memory switch is pressed, a signal is sent to the outer mirror control ECU assembly (driver door) and sent to the main body ECU (multiplex network body ECU), which changes the mirror surface position to the memorized position.

Outer mirror control ECU assembly

Operates each mirror motor based on signals from the mirror select switch and mirror adjust switch.

Based on information from the mirror position sensors, 3 different mirror surface positions can be memorized. By operating a seat memory switch, the mirror surface moves to the memorized position.

Electrical remote control mirror function

When the outer mirror switch on the multiplex network master switch assembly is operated, this function moves the mirror surface vertically or horizontally to enable the driver to attain an optimal mirror angle. Pressing the mirror select switch R switch operates the right side mirror, and pressing the mirror select switch L switch operates the left side mirror.

Memory and reactivation function

Stores the adjusted mirror surface position in the outer mirror control ECU assembly.

Power retract mirror function

Retracts and returns the outer rear view mirror assemblies when the retractable outer mirror switch is pressed.

Auto power retract mirror function

Retracts and returns each outer rear view mirror assembly together with the following operations while the auto power retract mirror switch is on.

Reverse shift-linked function

Directs the mirror surface downward to improve visibility when driving in reverse and all of the following conditions are met:

Reverse shift-linked mirror position memorization function

Memorizes the mirror surface position when the outer mirror switch is operated while the reverse shift-linked function is operating (can be enabled or disabled using the customize function).

Mirror heater function

Turns on the mirror heaters when the rear window defogger is turned on. The rear window defogger and mirror heaters automatically turn off 15 minutes after the rear window defogger and mirror heaters were activated. The rear window defogger and mirror heaters continue to operate up to an additional 45 minutes if the following conditions are met.

Automatic glare-resistant EC mirror function

Reduces glare/reflection in the mirror during nighttime driving for safer driving conditions.

Glare/reflection from vehicle headlights behind could blind the driver and cause dangerous driving conditions.