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Malfunction Indicator Lamp
If this indicator comes on
while driving, it means one
of the engine's emissions control
systems may have a problem. Even
though you may feel no difference in
your vehicle's performance, it can
reduce your fuel economy and cause
increased emissions. Continued
operation may cause serious damage.
If you have recently refueled your
vehicle, the indicator coming on
could be due to a loose or missing
fuel fill cap. You will also see a
''TIGHTEN FUEL CAP'' message on
the multi-information display.
Tighten the cap until it clicks at least
once (see page
488
). Tightening the
cap will not turn the indicator off
immediately; it can take several days
of normal driving.
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If the indicator comes on repeatedly,
even though it may go off as you
continue driving, have the vehicle
checked by your dealer as soon as
possible.
If you keep driving with the
malf unction indicator lamp on, you can
damage your vehicle's emissions
controls and engine. Those repairs may
not be covered by your vehicle's
warranties.
If your vehicle has an automatic
transmission, the malfunction
indicator lamp may also come on
with the ''D'' indicator.
You will also see a ''CHECK
EMISSION SYSTEM'' message on
the multi-information display (see
page
88
).
2009 TL
Readiness Code
Your vehicle has certain ''readiness
codes'' that are part of the on-board
diagnostics for the emissions
systems. In some states, part of the
emissions testing is to make sure
these codes are set. If they are not
set, the test cannot be completed.
If the battery in your vehicle has
been disconnected or gone dead,
these codes may be erased. It takes
several days of driving under various
conditions to set the codes again.
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