Tire Pressure Light; Malfunction Indicator Lamp - Buick 2005 Century Owner's Manual

Tire Pressure Light

The system stores the tire pressures of the vehicle's
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 light will
not come on 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 70 mph (110 km/h).
When the LOW TIRE light comes on, stop as soon as
possible and check all the tires for damage. If a tire
is flat, see If a Tire Goes Flat on page 5-69. Also check
the tire pressure in all four tires as soon as possible.
See Inflation - Tire Pressure on page 5-60.
The light will stay on, while the ignition is on, until the
system is reset. See Tire Pressure Monitor System
on page 5-61.
3-36
The vehicle may have a
tire pressure monitor that
indicates a large change
in the pressure in one tire.

Malfunction Indicator Lamp

Service Engine Soon Light
This system is called OBD II (On-Board 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.
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition, and emission
control systems.