Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Fail-safe Chart

• If a malfunction is detected in the 4WD ECU assembly, the 4WD ECU assembly may stop AWD control and transfer all torque to the front wheels, or function in a such a way as to prevent damage to the system.
• If a malfunction is detected in the sensor or actuator, current to the 4WD linear solenoid of the electro magnetic control coupling sub-assembly is cut. As a result, all torque is transferred to the front wheels.
• When a malfunction is detected in the AWD system, operations related to the malfunction will be prohibited. However, if the function is operating when the fail-safe function activates, the operation may be permitted to continue temporarily to prevent sudden changes in the vehicle condition.
• When the AWD system is malfunctioning, a warning message is displayed on the multi-information display to inform the driver.

Data List / Active Test

DATA LIST / ACTIVE TEST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faul ...

Linear Solenoid Power Supply System Malfunction (C120C)

DESCRIPTION This DTC is output by the 4WD ECU assembly if a malfunction occurs in the linear solenoid power supply system. DTC No. Detection Item DTC Detection Condition Trouble Area C120 ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Power Steering Ecu: Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed, installed, or replaced during the power steering ECU assembly removal/installation are shown below. Necessary Procedure After Parts Remo ...

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Washer Nozzle(for Rear Side): On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT REAR WASHER NOZZLE (w/o Rear No. 2 Seat) (a) Operate the rear washer nozzle and check the position that the washer fluid contacts the back door glass. Standard: Washer fluid contacts the back door glass in the area shown in the illustration. *a Cente ...