2007 Honda odyssey has a alarm going off at random times

SOURCE: 2006 Honda odyssey. Security alarm

Hi,

I am assuming that your Odyssey has a factory installed alarm system. If yes, then it is a basic door and ignition sensor to trigger and therefore should have no false trigerring. If it activates (with no) randomly even when not triggerred, then it can only be further assumed that door locking/sensor mechanism is getting false readings. Any thing out of the ordinary with the doors? (especially driver's side passenger doors).

You may want to check the electrical connection of the power sliding doors (Junction Switches). Like most door switches, they may be misaligned, worn out, corroded or simply deteriorated. Being an electrical device, moisture, rust, dust, grime and dirt may affect its performance.

If that does not correct the problem, you may want to check fuse #13 (the manual says #5) for continuity. There are some instances that remove and reinstall resets the alarm.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

SOURCE: Malfunctioning car alarm 98 honda accord

For the system to arm, the ignition switch must be off and the key removed. Then, the multiplex control unit must receive signals that the doors, hood, and trunk lid are closed and locked. When everything is closed and locked, none of the control unit inputs are grounded.

The door switches, hood switch, trunk lid switch, door lock knob switches, and door lock cylinder switches are all open. Ten seconds after the doors are locked with the key or the lock knob, or immediately after locking the doors with the remote transmitter, the system arms.

If anything is opened or improperly unlocked after the system is armed, the control unit gets a ground signal from that switch, and the system is set off.

If one of the switches is misadjusted or there is a short in the system, the system will not arm. As long as the control unit continues to get a ground signal, it thinks the vehicle is not closed and locked and will not arm.

An alarm that sounds for no apparent reason may have been set off by a switch that is on the threshold of misadjustment. In this case, it may only take a significant change in outside temperature, the vibration of a passing truck, or someone bumping into the vehicle to make the alarm sound.

SOURCE: 2005 Honda odyssey horn will not stop blowing

I had same problem. Could be the remotes need to be reprogrammed or replaced; or one of your door locks might not be working right.