Malfunction Indicator Lamp; Service Engine Soon Light - Buick 1999 Regal Owner's Manual

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After the system has "learned" tire pressures with
properly inflated tires, the LOW TIRE light will come
on if the pressure in one tire becomes 12 psi (83 kPa)
lower than the other three tires. The low tire inflation
monitor system won't alert you if the pressure in more
than one tire is low, if the system is not yet calibrated, or
if the vehicle is moving faster than 60 mph (95 km/h).
When the LOW TIRE light comes on, you should stop
as soon as you can and check all your tires for damage.
(If a tire is flat, see "If a Tire Goes Flat" in the Index.)
Also check the tire pressure in all four tires as soon as
-
you can. See "Inflation
Tire Pressure" in the Index.
The light will stay on until you turn off the ignition or
reset the system. See "Low Tire Inflation Monitor
System" in the Index.
The LOW TIRE light also comes on briefly when you
turn the ignition key to RUN. If the light doesn't come
on then, have it fixed so it will be there to tell you if the
pressure in a tire is low or high.

Malfunction Indicator Lamp

(Service Engine Soon Light)

This system is called OBD II (On
-
Diagnostics
Second Generation) and is intended to assure
that emissions are at acceptable levels for the life of the
vehicle, helping to produce a cleaner environment. The
SERVICE ENGINE SOON light comes on and a chime
will sound to indicate that there is a problem and service is
required. Malfunctions often will be indicated by the
system before any problem is apparent. This may prevent
more serious damage to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.
yellowblue
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
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Board
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