I lost the remote to my Hyundai Accent 2006 model car. The alarm has not been activated for a while, which was fine, but yesterday it had somehow been reactivated and now i can't switch it off (no remote) . So, whenever i start the car the alarm blares and the hazards flash!!! How do i disconnect or override the alarm???

SOURCE: HOnda Accord EX 1998 ALARM

Have you tried putting your Valet (original keys) into the ignition and turning it to the II position?

SOURCE: Car Alarm

sounds like the drivers side key switch has failed remove the interior door panel and there will be a switch attached to the back of the key lock cylinder or around there it should be two or three wires also check the door jamb wire harness where the door closes for any broken or damaged wires, use a vot meter and see if you get power or ground to the opposite side of the switch when you use the key to lock and unlock the door if nothing changes and there is power or ground! at this switch i would replace it, i don't think there is one but if the car has a passenger side key hole try to unlock the car from that side and see if you get the same problem -jeff

SOURCE: my 2006 hyundai sonata alarm keeps going off

One word:

Dealer.

Next time just disconnect the battery until you get it towed as this is a warranty item. I'll bet some wondered if this was a prank question like I did, right?

SOURCE: hyundai accent, location of fuel cut off

hi from uk location of fuel safety shut off valve/switch on uk r/h drive accents is on the engine bay bulkhead in front of drivers side it is a square box with red rubber top press button may be on opposite side on l/h drives ? if activated? just press button till click ? to reset these normally only cut off on impact ? to stop elec fuel pump continuing delivering if involved in an R.T.A fire prevention

SOURCE: ELANTRA ALARM PROBLEM

If the alarm keeps going off constantly and the remote has no influence on the alarm its most likely a connection problem. A hyundai dealer might be able to fix it but since you can start the car something you might be able to try is....
Check and make sure the remote battery is in the right way. Make sure all of the doors are closed, the trunk is closed, open the hood, connect the battery, close the hood all the way and try to lock and unlock the doors. Hope this works but if not, sorry it didn't work.