I have the same issue; it goes off in my driveway and when I am driving. I pulled the fuse for my horn as the neighbors were getting a little upset.
That's an usual fault but suspect CIM
To turn off a 2003 Saab 9-3 car alarm without the key, you can try disconnecting the battery. Open the hood and locate the battery; then, carefully remove the negative terminal cable to cut the power to the alarm system. Alternatively, if you have access to the interior, you can also try locking and unlocking the driver's door with the manual key or using the override button, if available. If these methods don't work, contacting a professional locksmith or a Saab dealer may be necessary.
I have the same problemsaab 95 kombi - 1999you have to change the battery of alarm system (change the horn complete ;-( filo from Swiss
Speed alarm
The Saab 9-3 convertible is equipped with an integrated security system that includes features such as an immobilizer and an alarm system. The immobilizer helps prevent unauthorized engine start, while the alarm system activates if there’s a break-in attempt or if the vehicle is tampered with. Additionally, some models may offer remote locking and unlocking capabilities for added convenience and security. Overall, the system is designed to enhance the vehicle's protection against theft and unauthorized access.
which alarm? if it the security alarm then its because all the doors are not unlocked when they are being opended and if you pop your trunk but the doors are not unlocked it will do the same.
Its built into the radio unit with dice part of alarm system di (dash intergrated) tw (theft warning) and then ice (radio)
if the display says "service theft alarm" or "key not accepted" put the key in the ignition, press the unlock button on the key several times and turn it it will start
he's driving a swedish car. A Saab.
If you don't set the alarm using the remote and lock the car with the key the alarm shouldn't be activated.
you eat pie
2.0t