Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Operation Check

OPERATION CHECK

FRONT WIPER MOTOR AND LINK ASSEMBLY INSPECTION

(a) Door Open Linked Wiper Suspend Function

(1) Continuously apply water to the windshield glass in front of the rain sensor

(2) Turn the engine switch on (IG).

(3) Move the windshield wiper switch assembly to AUTO and confirm that the wipers operate.

(4) Open the driver door or front passenger door and check that the front wipers stop.

(b) Service Position Control

(1) Turn the engine switch off.

(2) Within 42 seconds of turning the engine switch off, hold the windshield wiper switch assembly in the MIST position for 2 seconds and confirm that the wipers move to the uppermost position.

(c) AUTO Wiper Inspection

(1) Continuously apply water to the windshield glass in front of the rain sensor

(2) Turn the engine switch on (IG).

(3) Move the windshield wiper switch assembly to the AUTO position.

(4) Check that the wipers move.

(d) Vehicle speed linked wiper control

HINT:

When the AUTO wiper function is set to off using the customize function, vehicle speed linked wiper control operates.

(1) Turn the engine switch on (IG).

(2) Move the windshield wiper switch assembly to the AUTO position.

(3) Check that the wipers move intermittently.

WASHER MOTOR AND PUMP ASSEMBLY INSPECTION

(a) Washer operation inspection (front)

(1) Turn the engine switch on (IG).

(2) Operate the washer switch (front) for approximately 0.5 seconds or more and confirm that the front wipers operate in the LO setting when the washer fluid is sprayed and that the front wipers cycle 3 times after releasing the washer switch (front).

(b) Washer operation inspection (rear)

(1) Turn the engine switch on (IG).

(2) While the windshield wiper switch assembly (rear wiper control switch) to is set to OFF, operate the washer switch (rear) for approximately 0.5 seconds or more and check that the rear wiper operates when the washer fluid is sprayed.

(3) Check that the rear wiper operates for approximately 2.5 seconds after releasing the washer switch (rear).

(c) Drip prevention wiper function

(1) Turn the engine switch on (IG).

(2) At a vehicle speed of approximately less than 4 km/h, check that the front wipers operate for 1 cycle approximately 3 seconds after washer cooperation completes.

REAR WIPER MOTOR AND BRACKET ASSEMBLY DELAY INSPECTION

(a) Turn the engine switch on (IG).

(b) Move the windshield wiper switch assembly to the INT position.

(c) Check that the rear wiper operates once approximately every 12 seconds.

HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY INSPECTION

(a) Turn the engine switch on (IG).

(b) Set the headlight dimmer switch assembly to the HEAD position.

(c) Operate the washer switch 5 times and check that washer fluid sprays from the headlight actuator sub-assembly for approximately 1 second.