I just purchased a 2006 Honda Odyssey EXL with 30K miles on it (8 days ago). Everything was great until last night when the alarm kept going off. Starting around 1:30AM the alarm would go off. We'd go out, use the keyfob to "unlock" and stop the alarm. Then, we'd relock the doors and the alarm would sound again (anywhere between 30 minutes and instantly for the next few hours). Eventually we just left the van unlocked for the night. Is this the hood switch? Do I need to unplug the alarm under the hood? Any advice?