I never had a problem with my 04 xb factory installed alarm(scion security) before but recently ,I couldnt remember where I parked so I pressed the panic button and I didnt hear my car honk/beep but thank goodness I found it although I noticed only the lights were flashing but no horn.I got home and tried setting off the alarm and same thing happened,the lights were flashing but it doesnt honk.It was not like that before,whenever I press the panic button the lights would flash and it would honk.The horn works from the steering wheel though...somebody help me before I get drunk.