Peddlarbob.

I had the same problem and I is cause by the car not going to sleep. It is like to car is searching for the key all the time and just eats up the battery. The key as to be kept more than twenty five feet away from the car but even that does not always work. Only two ways to cure the problem is to disconnect the battery when the car is not in continual use or keep a battery tender on it that has an output of more than 4a. Bob.