2006 Saab 9-3 Owner's Manual - Page 255

Car care Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability. Your vehicle has also been equipped with a TPMS malfunction telltale to indicate when the system is not operating properly. When the malfunction telltale is illuminated, the system may not be able to detect or signal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible replacement tires on the vehicle. Always check the TPMS malfunction telltale after replacing one or more tires on your vehicle to ensure that the replacement tires are compatible with the TPMS. 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 overinflated. 255 Valve with sensor If the tire pressure drops If the tire pressure drops 25% or more below highest recommended pressure (see tire pressure label on page 267), the SID will issue a warning as to which tire is affected. Low tire pressure, front left. Make a safe stop. Adjust the tire pressure as soon as possible. Valve without sensor If the vehicle is equipped with a different wheel size than those fitted as standard and therefore should use a different recommended highest tire pressure the owner shall contact a workshop to have the system recalibrated. We recommend that you contact a Saab dealer.