detach it from the batter ...
To reset an alarm system on a 2005 Honda Civic locate the brain. The brain should have a reset button located on it. Press it to reset the alarm.
The alarm system reset button on a Honda Passport is typically located under the dashboard near the driver's side, often near the steering column or fuse box. It may be necessary to remove a panel to access it. Consult your vehicle's owner manual for the exact location and instructions specific to your model year.
More information is needed on this...is it a stock Honda alarm? What year (or generation) Prelude is it for?
disconnect the battery to shut off/reset
disconnect battery
disconnect battery
To disable the alarm on a 1998 Honda Passport, insert the key into the driver's side door lock and turn it to the unlock position. This should deactivate the alarm system. If that doesn't work, try starting the vehicle with the key, as this can also reset the alarm. If problems persist, consult the owner's manual or a professional mechanic for assistance.
If you have changed the stereo the alarm settings will reset. The dealership reset those for Anti Theft protection.
disconnect the batt... for 5 to 10 min to reset
disconnect and reconnect the battery
Disconnect the negative battery cable for a couple of minutes, then reconnect. The CHECK ENGINE light should disappear if everything is okay.
To reset the car alarm on a 2006 Honda Accord, first, ensure the vehicle is unlocked using the key or remote. Then, insert the key into the ignition and turn it to the "On" position without starting the engine. Press the lock and unlock buttons on the remote key fob to re-sync the alarm system. If the alarm continues to go off, you may need to disconnect the car battery for a few minutes and then reconnect it.