Lexus NX: 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.


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

Engine compartment

Items Check points
Brake fluid Is the brake fluid at the correct level?
Engine/power control unit coolant Is the engine 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?
  • 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?
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

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.
  • 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.

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 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.


 Do-it-yourself maintenance

 Do-it-yourself service precautions

If you perform maintenance by yourself, be sure to follow the correct procedure as given in these sections. Maintenance Items Parts and tools 12-volt battery condition

 Engine compartment

Components Fuse box Engine coolant reservoir Engine oil filler cap Power control unit coolant reservoir Brake fluid reservoir Radiator Condenser Electric cooling fans Engine oi


 Software Incompatibility with Body Control Module "B" (U1331)

DESCRIPTION This DTC is stored when the destination information of the main body ECU (multiplex network body ECU) does not match that of the blind spot monitor sensors. DTC No. Detection Item DTC Detection Condition Trouble Area Note U1331 Software Incompatibility with Body Control


INSTALLATION PROCEDURE 1. INSTALL INTEGRATION CONTROL AND PANEL ASSEMBLY (VSC OFF SWITCH) (a) Install the integration control and panel assembly (VSC OFF switch) to the upper rear console panel sub-assembly with the 2 screws. HINT: The locations labeled A in the illustration are tightened togethe

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