My car was not driven for 3 days. Last night, got to it and found out the batter was flat and when i got into the car (by opening the door manually), I'm hearing tick tak tick tak sounds (like it's from a relay) behind the 3 emergency light button.

Soon after, I have jump started the car, run for a while to recharge the battery and things are back to normal.

I'm suspecting the alarm was triggered and had drained the battery.

Anyone have similar experience?