Malfunction Indicator Lamp - Buick 2001 LeSabre Owner's Manual

Engine Coolant Temperature Gage
A temperature indicator light will turn on and a chime
will sound.
If you have been operating your vehicle under normal
driving conditions, and the temperature indicator light
comes on, you should pull off the road, stop your
vehicle and turn off the engine as soon as possible.
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This gage shows the engine
coolant temperature. If the
pointer moves into the red
area, the engine is too hot.

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 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.
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
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