2008 Saab 9-5 Owner's Manual - Page 235

95_US_M08.book Page 235 Friday, May 11, 2007 1:06 PM Car care and technical information If the tire pressure continues to decrease then an alarm is shown on the SID when the pressure has decreased to 23 psi (159 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 front right. 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. Check/adjust the pressure in the other tires when a fault message is shown. 235 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. If the system has triggerd a low pressure warning or alarm then the tire pressure must be adjusted to the recommended pressure in order to put out the warning or alarm. For further information on tire air pressure, see page 222. Allow 10 minutes for the system to recognise the wheel/sensors positions after fitting a new set of tires. During this period no low pressure warning or alarm can be triggered. Valve without sensor If the tire pressure decreases If the tire pressure decreases to 0.4 bar (6 psi) below the recommended pressure then a warning is shown on the SID as to which tires are affected. Tire pressure low, rear left. Check tires. Adjust the pressure as soon as possible.