OK, FOR MOST PART I LOVE MY SATURN 2006 ION. A COUPLE WKS AGO I LOCKED THE CAR TO GO TO CHURCH, THE ALARM KEPT GOING OFF, I THOUGHT MY HUSBAND WAS HITTING KEY SO I TOOK BOTH OUT AND HAD THEM ON SEAT, EVERY 5 MIN CAR ALARM WOULD GO OFF. WENT OUTSIDE CAR WOULD LOCK BUT HORN WOULDNT BLOW. SO OPENED DRIVER DOOR, THEN EVERYTHING OK. COUPLE DAYS LATER, LEFT CAR CAME BACK HORN WENT OFF ALL DAY. THE ONLY WAY TO KEEP THE ALARM FROM GOING OFF IS TO NOT LOCK THE CAR. NOW MY LIGHTS IN THE CAR WILL NOT GO OUT OR THEY WILL GO OUT ONLY TO COME ON A FEW MIN LATER. THIS IS RIDICULOUS. IF ANYONE HAS ANY SUGGESTIONS, I WOULD CERTAINLY APPRECIATE FEEDBACK. I CHECKED THE RECALLS, WEVE HAD TO REPLACE THE GAS THING BUT OTHER THAN THAT CAR HAS DONE WELL. OH AND THE DRIVER DOOR WILL NOT LOCK IF IM IN CAR THE REST WILL. PREPLEXED IN VA

Update from Jul 11, 2013: update to let you all know the fix...door switch was loose. so my car thought my door was open so thats why the horn would blow when alarm was on, makes sense now LOL. anyway, cost 17.00 including shipping to have the part shipped to me and now that we jiggled it, its working fine but i know its going to go soon and my husband will pop it out and put the new one in. you do it all at the door...hope this helps,

Not sure why my car's alarm system keeps going off. The lights flash and the horn sounds all day every day. It stopped after two days. The interior lights also stay on from time to time and the exterior lights don't go out for about a half an hour. I think that I will have to replace my alarm system soon. I never knew that an alarm system goes bad after so many years. I am not sure if any other Saturn owners are having the same problem or if it is just my car. I no longer have a warranty due to the mileage and the years.