Have finally got to introduce myself..Bought a 2005 9-5 auto Vector estate about 2 months ago and am enjoying the drive.Had a new t/gate lock sensor fitted which sorted the problem ok..Now the alarm is going off occasionally after 30mins-1hr of locking car up.I have read a couple of posts and I suspect it maybe a faulty sensor as my driveway is on a bit of a slope down forwards when parked.I live near Eastbourne and I hope there is a Saab garage in the region,or,does anyone have other suggestions please...