Lexus RX400h2006 Owner's Manual page 119

GAUGES, METERS AND SERVICE REMINDER INDICATORS
(g) Malfunction Indicator Lamp
This lamp comes on when the ignition key is turned to the
"ON" position and goes off when the "READY" light
comes on. This means that the warning light system is
operating properly.
If the lamp remains on, or the lamp comes on while driving,
first check the followings.
D Empty fuel tank
If the fuel tank is empty, refuel immediately.
D Loose fuel tank cap
If the fuel tank cap is loose, securely tighten it.
These cases are temporary malfunctions. The malfunction
indicator lamp will go off after taking several driving trips.
If the lamp does not go off even after several trips, contact your
Lexus dealer as soon as possible.
If the fuel tank is not empty or the fuel tank cap is not
loose...
D There is a problem somewhere in the hybrid system or
warning light system itself.
Contact your Lexus dealer as soon as possible to service the
vehicle.
92
Emissions Inspection and Maintenance (I/M) programs
Your vehicle may not pass a state emission inspection if the
malfunction indicator lamp remains on. Contact your Lexus
dealer to check your vehicle's emission control system and
OBD (On−Board Diagnostics) system before taking your
vehicle for the inspection.
See "Emissions inspection and maintenance (I/M) programs"
on page 517.