Lexus RX (RX 350L, RX450h) 2016-2022 Repair Manual: General Maintenance

GENERAL MAINTENANCE

CAUTION / NOTICE / HINT

  • These are maintenance and inspection items that are considered to be the owner's responsibility.

    The owner can do them or they can have them done at a service center.

    These items include those that should be checked on a daily basis, those that in most cases do not require special tools, and those that are considered to be reasonable for the owner to do.

    General maintenance items and procedures are as follows:

PROCEDURE

1. GENERAL NOTES

  • Maintenance requirements vary depending on country.
  • Check the maintenance schedule in the owner's manual.
  • Following the maintenance schedule is mandatory.
  • Determine the appropriate time to service the vehicle using either miles driven or time (months) elapsed, whichever reaches the specification first.
  • Maintain similar intervals between periodic maintenance unless noted.
  • Failing to check each vehicle part could lead to poor engine performance and increased exhaust emissions.

2. LIGHTS

(a) Check that the headlights, stop lights, taillights, turn signal lights, and other lights illuminate or blink properly. Also, check if they are sufficiently bright.

(b) Check that the headlights are aimed properly.

3. WARNING LIGHTS AND BUZZERS

(a) Check that all of the warning lights and buzzers work.

4. HORNS

(a) Check if the horn is working correctly.

5. WINDSHIELD GLASS

(a) Check for scratches, pits or abrasions.

6. WINDSHIELD WIPER AND WASHER

(a) Check that the washers are aimed properly. Also, check that the washer fluid hits the center of the operating range of each wiper on the windshield.

(b) Check if the wipers streak. Replace them if necessary.

7. WINDSHIELD DEFROSTER

(a) When the air conditioning is on the defroster setting, check that air comes out of the defroster outlets.

8. REAR VIEW MIRROR

(a) Check that the rear view mirror is securely installed.

9. SUN VISORS

(a) Check that the sun visors move freely and are securely installed.

10. STEERING WHEEL

(a) Check that the steering wheel has the proper amount of free play. Also check for steering difficulty and unusual noises.

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11. SEATS

(a) Check that the seat adjusters, seatback recliner and other seat controls operate smoothly.

(b) Check that all of the latches lock securely in all positions.

(c) Check that the locks hold securely in all positions.

(d) Check that the headrests move up and down smoothly and that the locks hold securely in all latched positions.

(e) Check the basic function. (for Front Seat (w/ Memory))

(1) Operate the power seat switches and check that the following seat functions operate properly:

  • Slide function
  • Reclining function
  • Lifter function
  • Front vertical function
  • Lumbar support adjustment function
  • Cushion length function*
  • *: w/ Seat Variable Cushion Switch

*a

Slide Function

*b

Reclining Function

*c

Lifter Function

*d

Front Vertical Function

*e

Lumbar Support Adjustment Function (up - down) (w/ Seat Variable Cushion Switch)

*f

Lumbar Support Adjustment Function (forward - back)

*g

Cushion Length Function (w/ Seat Variable Cushion Switch)

(f) Check the basic function. (for Front Seat (w/o Memory))

(1) Operate the power seat switches and check that each seat function operates properly:

  • Slide function
  • Reclining function
  • Lifter function
  • Front vertical function
  • Lumbar support adjustment function
  • Cushion length function*

*: w/ Seat Variable Cushion Switch

*a

Slide Function

*b

Reclining Function

*c

Lifter Function

*d

Front Vertical Function

*e

Lumbar Support Adjustment Function (up - down) (w/ Seat Variable Cushion Switch)

*f

Lumbar Support Adjustment Function (forward - back)

*g

Cushion Length Function (w/ Seat Variable Cushion Switch)

(g) Check the basic function. (for Second Row)

(1) Operate the rear power seat switch, fold seat switch assembly and check that each switch function operates normally.

  • Reclining operation (rear power seat switch)
  • Fold operation (rear power seat switch and fold seat switch assembly)
  • Return operation (rear power seat switch and fold seat switch assembly)

*1

Rear Power Seat Switch LH

*2

Rear Power Seat Switch RH

*3

Fold Seat Switch Assembly

-

-

*a

Reclining Operation

*b

Fold Operation

*c

Return Operation

-

-

(h) Check the fold function. (for Third Row)

(1) Push and hold the fold switch and check that a buzzer sounds twice and the seatback begins operating in the fold direction.

HINT:

If the switch is pushed when the operating conditions are not met, the buzzer will sound once.

(2) When the seatback reaches the cushion fold operation position the seat cushion begins operating in the fold direction.

Check that when the rear No. 2 power seat fold operation is complete, the buzzer sounds twice.

(i) Check the return function. (for Third Row)

(1) Push and hold the return switch and check that a buzzer sounds twice and the seatback begins operating in the return direction.

HINT:

If the switch is pushed when the operating conditions are not met, the buzzer will sound once.

(2) Check that when the seatback reaches the cushion return operation position the seat cushion begins operating in the return direction.

Check that when the rear No. 2 power seat return operation is complete, the buzzer sounds twice.

12. SEAT BELTS

(a) Check that the seat belt components, such as the buckles, retractors and anchors, operate properly and smoothly.

(b) Check that the belt webbing is not cut, frayed, worn or damaged.

13. ACCELERATOR PEDAL

(a) Check that the pedal operates smoothly. Check that the pedal does not have uneven resistance or stick in certain positions.

14. BRAKE PEDAL

(a) Check that the brake pedal operates smoothly.

(b) Check that the pedal has the proper reserve distance and free play.

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(c) Turn the power switch on (READY) and check the brake booster function.

Click here

(d) Turn the power switch on (READY) and check the brake system indicator.

15. BRAKES

(a) In a safe place, check that the vehicle does not pull or lead to the side when applying the brakes.

16. PARKING BRAKE

(a) On a slight grade, check that the parking brake alone can hold the vehicle in place.

17. AUTOMATIC TRANSAXLE "PARK" MECHANISM

(a) Check the lock release button of the shift lever for proper and smooth operation.

(b) Check the shift lever for proper and smooth operation.

(c) When the shift lever is in P and all brakes are released in an area that has a slight grade, check that the vehicle is stable.

18. FLOOR MATS

(a) Check that the correct floor mats are used, and that they are properly installed.

    Inside Vehicle
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    Outside Vehicle
    General MaintenanceGENERAL MAINTENANCE CAUTION / NOTICE / HINT These are maintenance and inspection items that are considered to be the owner's responsibility. The owner can do them or they can hav ...

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