97 Sebring alarm won't quit

A buddy of mine just came over & went to leave & his 97 Sebring decided that the alarm was going to go off when he opened the door. Being a used car purchase he has no key fob for the alarm. How do you disarm it so he can crank his ride? Thanks Bob

unhook bat , go get key fob , from dealer
,heard there is a way, need to locate the transmitter under dash
might be a reset on it?

Cycle the key in the drivers door, that should turn it off. Do it with the doors shut.
If all else fails cycle key in both doors before opening.

NOTE if this is an aftermarket alarm it may have failed, go up under the dash & remove the inline fuse. You can tell an aftermarket alarm if it has a siren under the hood. Factory uses the horn.

You can also pull a fuse from the fuse box & shut it off if it is a factory alarm.