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:

When the 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 as a temporary malfunction and your vehicle may not pass the I/M test.

When the malfunction indicator lamp goes off 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.

    See also:

    Bluetooth® audio system setup
    System setup items and operation procedures - Pattern A. To enter the menu for each function, follow the steps below using a voice command or : - Pattern B. 1. Press to select “BT•A MENU”. 2. Se ...

    Performance
    Even if you like the looks inside and out — which many likely will — there is nothing endearing about the driving experience. First there's the body-lean issue. When you take a highway off-ramp at ...

    Moon roof
    Use the overhead switches to open, close, and tilt the moon roof up and down. Opening and closing Standard type 1. Open. The moon roof stops slightly before the fully opened position. Push th ...