Saab 2003 9-3 Owner's Manual page 208

208 Car care
The receiver is located in the trunk. Tire
pressure information is sent wirelessly to
the receiver.
The system checks the tire pressure when
the car is travelling over 18 mph (30 km/h).
The system is "self-learning", which means
that the position of the wheels can be
changed without requiring adjustments to
the monitoring system. The spare wheel
does not have a sensor.
The sensor batteries have an average life of
10 years. The batteries cannot be changed
but require the sensor units to be replaced.
The system does not warn if a tire is overin-
flated.
Valve with sensor
If the tire pressure drops
If the tire pressure drops 0.3 bar (4 psi)
below the recommended pressure, the SID
will issue a warning as to which tire is
affected.
Tire pressure low,
front left.
Check tires.
Adjust the tire pressure as soon as possible.
Valve without sensor
If the tire pressure continues to drop, the
SID will issue a warning alarm when the
pressure is 0.6 bar (9 psi) below the recom-
mended value.
Flat tire front left.
Make a safe stop.
Reduce speed (avoid heavy braking and
violent steering wheel movements) and
stop the car as soon as it is safe to do so.
Change the wheel.