My wife has an '03 Toyota Corolla and has never had a problem with it.
She told me that it was having a problem. So I go out to investigate. Upon turning the car on, the lights behind the dashboard, the lights behind the controls for the radio, A.C. etc. start flashing for about 5 seconds, then they go off. Then, after shutting the car off, the alarm and horn go off. In order to turn the alarm and horn off, you have to disengage the alarm on the key remote.
Has anyone had the same problem and if so, what could be the problem?

Thanks!