Alarm sets off and on

[rrpalileo]

I HAVE A 2005 X5 4.4 AND LATELY THE ALARM HAS BEEN SETTING OFF ON ITS OWN. WHEN ALARM IS DISABLED, THE INTERIOR LIGHTS TURNS OF AND ON BY ITSELF. AT ONE POINT IT STAYED ON FOREVER AND TOTALLY DISCHARGED THE ORIGINAL BATTERY. I REPLACED THE OLD BATTERY WITH A NEW ONE THINKING THAT THE OLD ONE WAS GOING DEAD. ONLY ENDING UP WITH THE VERY SAME EXACT PROBLEM. TOOK THE VEHICLE TO THE DEALERSHIP AND SAID THEY FOUND THE INTERIOR SENSOR O BE DEFECTIVE. BUT SINCE THEY DON'T HAVE HE PART IN STOCK, THEY TEMPORARILY DISABLED THE INTERIOR SENSOR. WHEN I GOT HOME, I ENABLED THE ALARM THINKING THAT MY PROBLEM WAS SOLVED. ONLY TO FIND OUT AFTER A COUPLE OF HOURS, THE ALARM STARTED GOING OFF AGAIN. THIS TIME I DECIDED TO JUST DISABLE THE ALARM AND LEFT THE VEHICLE UNLOCK. AFTER A WHILE, THE INTERIOR LIGHTS STARTED TURNING OFF AND ON BY ITSELF AND AT ONE POINT JUST STAYED ON. SO FINALLY I DECIDED TO JUST UNPLUG THE BATTERY CABLES AND LEFT THE X5 SITTING IN MY GARAGE FOR THE PAST DAYS TILL I FIND THE RIGHT SOLUTION. TAKING IT BACK TO THE DEALERSHIP IS NO LONGER ONE OF MY OPTIONS SINCE THEY ARE LIKEWISE OBVIOUSLY DOING THE SAME THING I AM DOING, HIT OR MISS. HELP..HELP..HELP..HELP..HELP..HELP