When To Check; Tire Pressure Monitor System; How To Check - Cadillac 2004 SRX Owner's Manual

When to Check

Check your tires once a month or more.
Also, check the tire pressure of the compact spare tire.
It should be at 60 psi (420 kPa).

How to Check

Use a good quality pocket-type gage to check tire
pressure. You can't tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they're underinflated.
Remove the valve cap from the tire valve stem. Press
the tire gage firmly onto the valve to get a pressure
measurement. If the cold tire inflation pressure is low,
add air until you reach the recommended pressure
on the Certification/Tire label or the Tire and Loading
Information label.
If you overfill the tire, release air by pushing on the
metal stem in the center of the tire valve. Recheck the
tire pressure with the tire gage.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and moisture.

Tire Pressure Monitor System

The Tire Pressure Monitor (TPM) system on your
vehicle, uses radio and sensor technology to check tire
pressure levels. Sensors, mounted on each tire and
wheel assembly transmit tire pressure readings to
a receiver located in the vehicle.
When a low tire pressure condition is detected, the TPM
system will display the CHECK TIRE PRESSURE
warning message on the Driver Information Center (DIC);
and at the same time illuminate the low tire pressure
warning symbol, on the instrument panel cluster. For
additional information and details about the DIC operation
and displays see System Controls on page 3-52 and DIC
Warnings and Messages on page 3-65 .
You should stop and check your tires as soon as
possible, and inflate them to the proper pressure as
indicated on the vehicle's tire information placard.
When the tire pressure
monitoring system warning
light is lit, one or more
of your tires is significantly
under-inflated.
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