My understanding is that it requires an ISAT (or TECH-II, I guess it depends
on model year of car) device (dealer or independent saab specialist) to
program the system to accept a new remote. Once the car and the remote are
synchronized though, if you have a battery failure in either the car or the
remote, you should be able to stand by the vehicle and push the door
lock/unlock button 5 times within a minute and have the remote
re-synchronize with the alarm system, but only after the two are synched by
the service tech's computer device.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.