I've kept ours this way just in case we forget if we've locked the Z, but are father along in a parking lot and want to use the remote and actually hear the horn as a confirmation.
In the owners manual there are instructions on how to configure the remote to only use the hazard flashers and no horn.
Setting hazard indicator and horn mode This vehicle is set in hazard indicator and horn mode when you first receive the vehicle. In hazard indicator and horn mode, when the LOCK button *1 is pushed, the hazard indicator flashes twice and the horn chirps once. When the UNLOCK button*2 is pushed, the hazard indicator flashes once.
If horns are not necessary, the system can be switched to the hazard indicator mode. In hazard indicator mode, when the LOCK button is pushed, the hazard indicator flashes twice. When the UNLOCK button is pushed, neither the hazard indicator nor the horn operates.
Switching procedure:
To switch the hazard indicator and horn (chime) operation, push the LOCK *1 and UNLOCK *2 buttons on the Intelligent Key simultaneously for more than 2 seconds.
. When the hazard indicator mode is set, the hazard indicator flashes 3 times.
. When the hazard indicator and horn mode is set, the hazard indicator flashes once and the horn chirps once.
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