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342
6-2. Maintenance
LEXUS NX300h Owners Manual_USA_M78578_en
The OBD system determines that a
problem exists somewhere in the emis-
sion 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.
When the 12-volt battery is discon-
nected 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.
Tires
• Is the tire inflation pres-
sure 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 defor-
mation.
•The wiper blades should
clear the wind-
shield/rear window
without streaking or
skipping.
Items Check points
Emission inspection and
maintenance (I/M) pro-
grams
Some states have vehicle emission
inspection programs which include
OBD (On Board Diagnostics)
checks. The OBD system monitors
the operation of the emission con-
trol system.
If the malfunction indicator lamp
comes on
Your vehicle may not pass the
I/M test in the following situa-
tions:
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