2009 Saab 9-3 Owner's Manual - Page 254

93_US_7carcare_MY09.fm Page 254 Tuesday, April 15, 2008 11:26 AM 254 Car care Check/adjust the pressure in the other tires when a fault message is shown. Note that the tire pressure can decrease without a puncture. The pressure could decrease around 3 psi (20 kPa) during a three month period. The outside temperature could also affect tire pressure. The temperature in the tire also affects the tire pressure. The specified tyre pressures are valid for cold tyres. The increased tyre pressure resulting from extensive driving must not be reduced. For further information on tire air pressure, see page 240. Allow 10 minutes for the system to recognize the wheel/sensors positions after fitting a new set of tires. During this period no low pressure warning or alarm can be triggered. Valve with sensor The system does not warn if the tire pressure is too high. If the system has warned or triggered an alarm due to inadequate pressure then the pressure must be reset to the recommended pressure so that the warning/alarm is cleared. Valve without sensor If the tire pressure continues to decrease then an alarm is shown on the SID when the pressure has decreased to 23 psi (160 kPa) which is the lowest permitted pressure for the tire. An alarm is also received when leakage is greater than 3 psi/min. (20 kPa/min.). Low tire pressure rear left. Make a safe stop. Reduce speed (avoid heavy braking and significant steering wheel movement) and stop the car as soon as possible at a suitable location. Replace the defective wheel. The fault message can remain for up to 10 minutes after restarting the car. Then it disappears if the tire pressure is correct. If the tire pressure decreases If the tire pressure decreases to 6 psi (40 kPa) below the recommended pressure then a warning is shown on the SID as to which tires are affected. Tire pressure low, front right. Check tires. Adjust the pressure as soon as possible.