Classic Saab 9-5 (1997 - 2009)
The brake booster (i.e. servo) on the 9-5 MY 2000-2001 is prone to leak at some point. As it is not serviceable in or out of the car, if it leaks it has to be replaced.
I was able to change mine in a more straightforward manner than I saw written up on the forums.
Just to share, I'll...