I can confirm you can change it yourself. I changed mine a couple weeks ago, battery was out for about 1 minute and it worked fine without any reprogramation needed. Hope this helps. Saab 9-5 2003...so, whenever I start my car, it complains that the remote battery is low. It's obvious what battery to use and how to physically replace it - but because the wonderfully helpful manual just says to go to the dealer to have it replaced (Seriously?!) I'm worried that they have some monumentally stupid design where the key forgets what car it goes with the instant you pull the battery.
Say it isn't so!