The alarm goes off all the time for no reason,,door ajar is always on..it locks and unlocks going down the road...wont start. just put in a new battery,,still nothing

More often then not the door sensor gets dry and corroded and makes a bad connection most of the time you can remedy this by using some lubricant that's sensor safe or electronic safe just spraying all of the door mechanism and may as well spray your hinges while your at it!! I hope this helps

It's in the driver door most likely do you have keyless entry and do you use your key to punch in the #s if so the seal is broken and letting water in if not the driver door module deals with all and also the door wire that's at the latch lock where you close the door that wire could be breaking making the interior and door ajar light comes on but all problems are in the driver door your master lock control keyless entry and alarm and door ajar all go through the driver door module check for moisture in it or corroded connections and broken wires also have fuses checked for blown ones have fun in your techno boogie box and if you do use your key press the key pad buttons get out of the habit