yep i also had a problem with the alarm going off randomly during the night. i had an extended warranty on the car at the time so took it to the dealership. they said the service book told them to replace the skreem module first so they charged me $100 and charged a bunch to the warranty company. That didn't fix it they found out it was a cheap switch in the glove box that made alarm go off if it was opened while it was armed. They said the part was not able to be ordered and just unplugged it. I asked them to put the old skreem back in and refund me for that but they said they had already thrown the original away. Unplugging the glove box switch fixed it but cost me like $200 and they broke half the fasteners on my dash so my dash vibrates at speeds over 75mph unless i wedge a piece of cardboard between the windshield pillar and the dash cover. they also broke the piece that goes under the steering wheel that has the screws to hold the bottom of the trim. they told me they would find a replacement or plastic weld it but than the dealership sold to another company and they don't acknowledge it ever happening now. i strongly dislike dealerships. its a good thing this forum exists as neither Chrysler or Mercedes seems to acknowledge this car, at least where i live in eastern Oregon.