Method and devices for disabling detection of a safety system activation condition. One embodiment of the invention provides a method that includes disregarding information from a first set of sensors when detection of a safety system activation condition is disabled; determining if information from a second set of sensors in available; when information from a second set of sensors is not available, generating a warning signal; when information from the second set of sensors is available, determining a value of the information from the second set of sensors; and when the value of the information from the second set of sensors indicates that a vehicle is in use, enabling detection of the safety system activation condition.