Page 79 of 493

GAUGES, METERS AND SERVICE REMINDER INDICATORS
57
If the system fails to reset, the light will remain flashing. In this
case, return to step 1 and try again.
(f) Malfunction Indicator Lamp
This
lamp comes on when the ignition key is turned to the
“ON” position and goes off after the engine starts. 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 following:
Empty fuel tank
If the fuel tank is empty, refuel immediately.
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...
There is a problem somewhere in the engine, emission
control system, electronic throttle control system, automatic
transmission electrical system or warning light system itself.
Contact your Lexus dealer as soon as possible to service the
vehicle.
If engine speed does not increase when the accelerator pedal
is depressed, there may be a problem somewhere in the
electronic throttle control system. At this time, vibration may occur. However, if you depress the
accelerator pedal more firmly and slowly, you can drive your
vehicle at low speeds. Have your Lexus checked by your
Lexus dealer as soon as possible.
Even if the abnormality of the electronic throttle control system
is corrected during low speed driving, the system may not be
recovered until the engine is stopped and the ignition key is
turned to “ACC” or “LOCK” position.
CAUTION
Be especially careful to prevent erroneous pedal
operation.
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.
For details, see “Emissions inspection and maintenance (I/M)
programs” on page 391.
Page 323 of 493

STARTING AND DRIVING
301
The tire pressure warning light may turn on due to natural
causes such as natural air l
eaks or tire inflation pressure
changes caused by temperature. In this case, adjusting the
tire inflation pressure will turn off the light.
Pushing the tire pressure warning reset switch should not turn
off the tire pressure warning light. Adjusting the tire inflation
pressure will turn off the light.
The spare tire is also equipped with the tire pressure warning
valve and transmitter. The tire pressure warning light will turn
on if the tire inflation pressure of the spare tire is low. If a tire
goes flat, even though the flat tire is replaced with the spare
tire, the warning light does not turn off. Replace the spare tire
with the repaired tire and adjust the proper tire inflation
pressure. The tire pressure warning light will turn off after a few
minutes.
CAUTION
Each tire, including the spare (if provided), should be
checked monthly when cold and inflated to the inflation
pressure recommended by the vehicle manufacturer on
the vehicle placard or tire inflation pressure label (tire
and load information label). (If your vehicle has tires of
a different size than the size indicated on the vehicle
placard or tire inflation pressure label (tire and load
information label), you should determine the proper tire
inflation pressure for those tires.)
As an added safety feature, your vehicle has been
equipped with a tire pressure monitoring system
(TPMS–tire pressure warning system) that illuminates a
low tire pressure telltale (tire pressure warning light)
when one or more of your tires is significantly
under inflated. Accordingly, when the low tire pressure
telltale (tire pressure warning light) illuminates, you
should stop and check your tires as soon as possible,
and inflate them to the proper pressure. Driving on a
significantly under inflated tire causes the tire to
overheat and can lead to tire failure. Under inflation
also reduces fuel efficiency and tire tread life, and may
affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning
system) is not a substitute for proper tire maintenance,
and it is the driver’s responsibility to maintain correct
tire pressure, even if under inflation has not reached
the level to trigger illumination of the TPMS low tire
pressure telltale (tire pressure warning light).
Page 474 of 493

ELECTRICAL COMPONENTS
452
NOTICE
Make sure the engine and all accessories are turned
off before performing maintenance.
When checking the battery, remove the ground cable
first and reinstall it last.
Be careful not to cause a short circuit with tools.
Take care no solution gets into the battery when
washing it.
If the battery terminal is disconnected or the battery is run
down...
The variable gear ratio steering system is reset temporarily
and “VGRS” warning light flashes after you reconnect the
battery terminal. In this case, you should turn off the light
and return the system to normal. To return the system to
normal, see “Variable gear ratio steering system” on page
293.
The moon roof may not operate automatically and the jam
protection function will not operate correctly after you
reconnect, replace or recharge the battery with the moon
roof slide −opened or tilted up. In any of these cases, you
should return the moon roof to normal. To return the moon
roof to normal, see “Moon roof” on page 95.
Checking battery condition
(a) Checking by fluid level lines
64X005c
1 Upper line 2Lower line
The fluid (electrolyte) level must be between the upper and
lower lines.
When checking the fluid level, look at all six cells, not just one
or two.
If the level is lower than the lower line, have the battery
checked by your Lexus dealer.