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The car-alarm system incorporates a sensor that monitors the window glass for the sound of breakage. The sensor is fitted inside the rear dome light. To avoid false alarms, such as the alarm being triggered by noise from passers by when the windows have been left open, or when children or petsare left inside the car, the sensor can be temporarily disabled. To disable the sensor To disable the sensor, first ensure that the ignition has been switched off and key removed from the switch. Then, press and hold the NIGHT PANEL button until "DOOR ALARM ONLY" appears on the SID and a chime sounds. The car alarm must now be activated within three minutes, or the glass sensor will become active again. The glass sensor will be enabled again automatically when the car is next unlocked. The sensor can also be enabled again by repeating the procedure for disabling it. When the sensor has been enabled, "FULL THEFT ALARM" will appear on the SID. If a fault is detected in the glass sensor, "SERVICE THEFT ALARM" will appear on the SID.
Activating the car alarm
The car alarm cannot be activated if the driver's door is open or if the ignition switch is in ON position. If, on the other hand, one of the other doors or the trunk or hood is open or opened and not closed again during the 10-seconds delay period, it will be excluded from the alarm function. If it is then closed, a new delay period of ten seconds will start, and the door (or trunk or hood) will once again be secured by the alarm system. As usual, the LED will be on continuously during the new delay period and will start to flash once every other second after the 10-seconds period has elapsed.
Electronic starting interlock (immobilizer)
When the key is inserted in the ignition, a signal is sent to the receiver. If the signal is verified, the engine can be started. Each time the key is removed from the ignition, the electronic immobilizer is activated. This means that the car cannot be started without the correct key inserted in the ignition and the immobilizer thus deactivated. If a fault is detected (e.g. in the transmitter) "KEY NOT ACCEPTED" will appear on the SID. In this case, you can still start the car if you turn the ignition key to ON and press one of the buttons on the key (providing that the receiver gets the right signal from the key). Take the car to an authorized Saab dealer to have the system checked. The LED double-flashes when the car is immobilized.