an '[EIS]' annotation indicates that the vehicle is either equipped with an electronic immobilization system installed by the
manufacturer, but not certified to meet CMVSS 114, or that no electronic immobilization system is installed (please see
paragraph 9 of these explanations for further information on immobilizers); and

9. ELECTRONIC IMMOBILIZATION SYSTEM - Every passenger vehicle, multipurpose passenger vehicle, truck and three-wheeled vehicle manufactured after September 1, 2007, with a Gross Vehicle Weight Rating (GVWR) less than 4,536 kg (10,000 lbs), except an emergency vehicle or a walk-in van, must be equipped with an electronic immobilization system, as per the requirements of CMVSS 114 - Theft Protection.

Electronic immobilizers typically require a special key or a small electronic device to start a vehicle's engine. This type of system, when activated, prevents the operation of the engine in response to any attempt to start the vehicle without using the authorized key, by shutting off one or more parts of the engine's electrical system. This might include the starter, ignition or fuel system.

Many manufacturers equip some or all of their U.S. market vehicles with electronic immobilization systems that meet the requirements of CMVSS 114, while in some cases these are available only as an option. There are also several U.S. market vehicles that are either not equipped with electronic immobilization systems, or that are equipped with electronic immobilization systems that do not meet the requirements of CMVSS 114. Here are three possible circumstances: