When travelling on ferries you are asked to turn off car alarms How do you disable a 2004 Nissan Xtrail car alarm?

To disable the car alarm on a 2004 Nissan X-Trail, you can typically do this by using the key fob to lock and then unlock the car, which often resets the alarm system. If that doesn't work, you can also disconnect the car's battery for a few minutes. Additionally, check the owner's manual for specific instructions related to the alarm system. If all else fails, consulting a professional or a dealership may be necessary.