Buick 2003 Century Owner's Manual page 276

The tire inflation monitor system detects differences in
tire rotation speeds that are caused by changes in
tire pressure. The system can alert you about a low tire
- but it doesn't replace normal tire maintenance.
See Tires on page 5-57.
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 on
page 5-66.) Also check the tire pressure in all four tires
as soon as you can. See lnflation -- Tire Pressure
on page 5-57.
The LOW TIRE light will also be displayed (while the
ignition is on) until you reset (calibrate) the system.
Don't reset the tire inflation monitor system without first
correcting the cause of the problem and checking
and adjusting the pressure in all four tires. If you reset
the system when the tire pressures are incorrect,
the system will not work properly and may not alert you
when a tire is low.
9ny time you adjust a tire's pressure, rotate your tires,
need to reset (calibrate) the tire inflation monitor system.
You'll also need to reset the system whenever you
buy new tires and whenever the vehicle's battery has
been disconnected.
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To reset (calibrate) the system:
1. Turn the ignition to RUN.
2. Locate the red RESET button inside of your
instrument panel fuse block.
The fuse block is located under the cover labeled
FUSES, which is at the end of the instrument
panel on the passenger's side of the vehicle.
The RESET button is the first button in the top
row of the fuse block.
3. Press and hold the RESET button for about
five seconds.
The LOW TIRE light will come on and flash
three times. Then it will go off. If the light doesn't
go off, see your dealer for service.
-.
I
ne system compietes the calibration process auring
driving.
The system normally takes 15 to 20 minutes of driving
in each of three speed ranges to "learn" tire pressures.
The speed ranges are 15 to 40 mph (25 to 65 km/h),
40 to 65 mph (65 to 105 km/h) and above 65 mph
will alert you after two to eight minutes if a tire is
12 psi (83 kPa) different from the other three tires.
Detection thresholds may be higher and detection
times may be longer on rough roads, curves and at
high speeds. The system is not capable of detection
(1 05 km!h).
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5-59