[bell]

plus there are water drains near the battery, if they are clogged it can let water where it shouldn't be.......had one where an audio shop ran a wire through the clutch line grommet and didn't put the grommet back in, when the drain clogged it was like a hose was turned on in the car through the missing grommet making the alarm brain under the seat get submerged.....ended up replacing the brain, all lock actuators in the car.......
that was in a 996, not sure if the 997 alarm brain is in the same spot......
check your carpets for wet spots, if you find any investigate it further.....