Originally Posted by landark
My first thought was maybe the car had been in water, but with both the trunk popping and now the alarm going off it seems more like a problem with the key than the car.
Do you have a valet key? If not, take the battery for the remote out of the key or the whole remote piece (I assume the transponder is built into the plastic housing, not the remote itself) and see if that helps.
Maybe you just need to replace the battery, they can do weird things when they drain.
I'm kind of thinking may this is what you need to do...^
How old is the cars battery BTW ?
175,000+ miles, 5/20/12 new ej257 short block, 8/20/11 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. Also CHECK YOUR OIL, these cars use it.