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:
If your vehicle overheats
The following may indicate that your vehicle is overheating:
l “ENGINE OVERHEAT” is shown on the multi-information display:
The engine may be overheating.
“HYBRID SYSTEM OVERHEAT” is shown on the m ...
Windshield wiper de-icer
This feature is used to prevent ice from building up on the windshield and
wiper blades.
- Vehicles with a navigation system.
Owners of models equipped with a navigation system should refer to
the ...
Air conditioning filter
The air conditioning filter must be cleaned or changed regularly to
maintain
air conditioning efficiency.
Removal method
1. Set the air conditioning system to recirculated mode.
The air conditio ...