Honda civic Alarm system

Hi ,
i have a 2001 civic and it used to beep and flash lights when u press
the lock button twice withing 5 secs and also when u unlock it will
flash lights. also when locked the red led light on my steering wheel
would start blinking indicating the anti theft device was in place.

all of a sudden it has stopped doing that . i read that pressing lock
and unlock together for 2 secs swictches it back to the mode that i
mentioned before . but i have tried it and does not seems to work .
has anybody run into it ?
any help is appreciated .

thanks
ravinder