My alarm will go off for no reason, Windows up, trunk closed doors locked ect. The dealer replaced the hood sensor, but that didn't fix the problem. Any ideas?

 

Try lookin in the owners manual to disable the motion sensors in the car.
Narrow the problem down that way.
They could be faulty.

Or you could have left your dog in the car
or a fly

 

I've had my '05 since October 2004. Within 3 weeks, my alarm started going off for no reason. I took it into the dealer. Turned out one of the sensors was bad.

 

Which sensor?

 

Have your dealer use their test tool, they can retrieve the cause(s) for the last 4 alarm events. This will tell them which specific sensor set the alarm off the last four times. If there is a defective sensor it will be obvious to them from the data.