run down battery-siren beep

I left my glove compartment lid open and the battery ran down. Took just 2 days. I turned off the battery switch, disconnected the terminals, and charged it up. I put the positive on first and then when I put the negative on, the siren beeped. So I was just curious that when the main switch was off the siren still beeped. A security proceedure, I suppose.

Jay

 

Jay- The alarm siren has a completely independent, rechargeable battery for the alarm that still works if thieves cut the cables to the main battery. Works just like your home alarm system, which also has an independent battery for when the bad guys shut off your power. Good news is: your works. Better news is: no $330 outlay for a new siren. The latest sirens (like yours) have a more durable, and less prone to leakage, rechargeable battery.

Taz
Terry Phillips

 

Taz, are you saying that the siren battery can be recharged?? I thought that was a sealed unit that HAD to be replaced if it went dead.

Jay

 

Jay- It is a completely rechargeable battery. The problam comes when the old style rechargeable batteries stop working and then start leaking, trashing the recharging circuitry and siren circuit connections.

Do not replace the batteries, replace the siren if need be. In your case, everything is OK and worked normally.

Taz
Terry Phillips

 

Jay- Just wanted to make sure I was clear on the rechargeable battery. The battery recharges itself whenever the car is running so the system is still operational if the main car battery is dead or disabled during a theft attempt.

On C4 Corvettes, a common ploy to steal the car was to drill a hole in the side of the main car battery and let the acid drain out. This disabled the car alarm, too. The rechargeable siren battery is designed to prevent this.

Taz
Terry Phillips

 

Taz

Thanks for the explanation. Now I get it. Also found out that the radio code is needed if the battery goes out. Lucky I had the code from previous issues. Took a drive today and everything is normal on a normal 100 degree day in St. George .

Thanks, Jay

 

Jay- Radio? We have a radio in these cars?

Taz
Terry Phillips

 

Taz

When people ask me if I have a radio I say well, we don't call it a radio. Ferrari, special as they are, refers to it as a "Remote Airway Detector - Inbound Only" option. And I explain that it's a proprietary one-way coded radio communication device. Sounds more exotic if you say it like that to the general public than just saying "Yes, it has a radio."

I know the code but I've never listened to it myself!!!

Jay