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Alarm Sets and Lock/Unlocks doors while dirving

I've inherited this vehicle and the alarm sets itself while i drive, meaning it will honk the horn once and lock the doors and flash the lights. It doesn't go off or anything. It will also unlock the doors whenever too. It only does it between 10 and 20 miles an hour. The problem is worse when it's cold out and better when it's warm somtimes gone period if it's warm enough. I don't have any other electrical problems, but I've checked every fuse I know how to find. i've looked for shorts as best I can. I can't seem to find a manual on the security system. Please Help! This has been driving me nuts.

Car = 2006 Chrysler Towne and Country (Touring Model 3.8 V6)
 
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