2005 SAAB 9-3 repair Question

Did u check your battery, get it recharged or replaced & try again, these car dont respond well to jump starting if original vehicle battery is low on charge, if it turns out that it is the battery that caused it, then u need to take car to dealer to have them check if vehicle system is going to sleep mode after arming alarm system. Good luck, also have them check the ignition switch, this vehicle stores all codes whether battery disconnected or not, so get codes read too.