My Dad's 02 1.8 Elite has been stood for 10 days, came to go out in it this morning and neither key fobs would work...looked in the car and the immobiliser light isnt flashing...would indicate a flat battery.

I know if i unlock the door with the key the alarm will go off...if i then turn the key in the ignition will it turn the alarm off even if it has a flat battery?

Many thanks