Hello! My car was running fine last night and this morning. Later in the morning, when I tried to start it, the car would turn over and catch, but then die. The little "car and key" icon continues to flash on the dashboard, which means that the anti-theft device (immobilizer) is active.

I've tried the following:
- disconnect the battery and touch the leads together for 20 seconds
- open all doors (hood and trunk), close them all, reactivate the alarm
- try several keys (I have three keys that have been "paired" to this car)
- insert key in door lock, turn to left and hold, turn to right and hold, unlock.

Nothing is working and I can find no information on the Internets about how to disable the immobilizer. It's now at a service station in Brooklyn and will be looked at on Monday, but I fear that they're not going to do anything and I'll have to have it towed again to the dealer. Advice?