Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual: General maintenance

Lexus RX (RX 350L, RX450h) 2016-2025 Owners Manual / Maintenance and care / Maintenance / General maintenance

Listed below are the general maintenance items that should be performed at the intervals specified in the "Warranty and Service Guide" or "Owner's Manual Supplement". It is recommended that any problem you notice should be brought to the attention of your Lexus dealer or qualified service shop for advice.

Engine compartment

Items Check points
Brake fluid Is the brake fluid at the correct level?
Engine/power control unit coolant Is the engine/power control unit coolant at the correct level?
Engine oil Is the engine oil at the correct level?
Exhaust system There should not be any fumes or strange sounds.
Radiator/condenser The radiator and condenser should be free from foreign objects.
Washer fluid Is there sufficient washer fluid?

Luggage compartment

Items Check points
12-volt battery Check the connections.

Vehicle interior

Items Check points
Accelerator pedal
  • The accelerator pedal should move smoothly (without uneven pedal effort or catching).
Brake pedal
  • Does the brake pedal move smoothly?
  • Does the brake pedal have appropriate clearance from the floor?
  • Does the brake pedal have the correct amount of free play?
Brakes
  • The vehicle should not pull to one side when the brakes are applied.
  • The brakes should work effectively.
  • The brake pedal should not feel spongy.
  • The brake pedal should not get too close to the floor when the brakes are applied.
Head restraints
  • Do the head restraints move smoothly and lock securely?
Hybrid transmission "Park" mechanism
  • When parked on a slope and the shift lever is in P, is the vehicle securely stopped?
Indicators/buzzers
  • Do the indicators and buzzers function properly?
Lights
  • Do all the lights come on?
  • Are the headlights aimed correctly?*
Parking brake
  • Does the parking brake switch operate normally?
  • When parked on a slope and the parking brake is on, is the vehicle securely stopped?
Seat belts
  • Do the seat belts operate smoothly?
  • The seat belts should not be damaged.
Seats
  • Do the seat controls operate properly?
Steering wheel
  • Does the steering wheel rotate smoothly?
  • Does the steering wheel have the correct amount of free play?
  • There should not be any strange sounds coming from the steering wheel.

*: Vehicles with single-beam headlights

Vehicle exterior

Items Check points
Doors
  • Do the doors operate smoothly?
Engine hood
  • Does the engine hood lock system work properly?
Fluid leaks
  • There should not be any signs of fluid leakage after the vehicle has been parked.
Tires
  • Is the tire inflation pressure correct?
  • The tires should not be damaged or excessively worn.
  • Have the tires been rotated according to the maintenance schedule?
  • The wheel nuts should not be loose.
Windshield wipers/ rear window wiper
  • The wiper blades should not show any signs of cracking, splitting, wear, contamination or deformation.
  • The wiper blades should clear the windshield/rear window without streaking or skipping.

WARNING

■ If the hybrid system is operating Turn the hybrid system off and ensure that there is adequate ventilation before performing maintenance checks.

Emission inspection and maintenance (I/M) programs

Some states have vehicle emission inspection programs which include OBD (On Board Diagnostics) checks. The OBD system monitors the operation of the emission control system.

If the malfunction indicator lamp comes on

The OBD system determines that a problem exists somewhere in the emission control system. Your vehicle may not pass the I/M test and may need to be repaired. Contact your Lexus dealer to service the vehicle.

Your vehicle may not pass the I/M test in the following situations:

  • When the 12-volt battery is disconnected or discharged
    Readiness codes that are set during ordinary driving are erased.

    Also, depending on your driving habits, the readiness codes may not be completely set.

  • When the fuel tank cap is loose
    The malfunction indicator lamp comes on indicating a temporary malfunction and your vehicle may not pass the I/M test.

When the malfunction indicator lamp still remains on after several driving trips

The error code in the OBD system will not be cleared unless the vehicle is driven 40 or more times.

If your vehicle does not pass the I/M test

Contact your Lexus dealer to prepare the vehicle for re-testing.

    Maintenance requirements
    To ensure safe and economical driving, day-to-day care and regular maintenance are essential. It is the owner's responsibility to perform regular checks. Lexus recommends the following maintenan ...

    Do-it-yourself maintenance
    ...

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