Scope of application of OBD2:The OBD2 agreement gasoline vehicles produced in the United States after 2004, and the OBD2 agreement gasoline vehicles produced in other regions after 2008.The following common models are not applicable to OBD2:Incompatible: American models: Dodge, JEEP, Sail, Chrysler, 2004 and before 2004Incompatible: French and Italian models cannot be used: such as: Fiat, Maserati, Lamborghini, DS, Logo, Citroen, Renault, Simca, Amilka, etc.Incompatibility: Japanese models cannot be used: Suzuki, Mazda 3, Mazda 6, Infiniti (QX50 q50 q501), 2013 Toyota avanza, Lexus (is250, ex250, ES300H) Honda (jazz, CRV) and cars produced before 2008, etc. .Incompatible: South Korean Kia and some Hyundai models (2013 Hyundai Sonata, 2017 Kia Soul PS, etc.)Incompatible: gasoline-electric hybrid and diesel vehicles, pickup trucks, RVs, cars with modified car computers, Swi Volvo, Chrysler Group, all brands of Fiat Group models. OBD2 Version It works when the car is running, and turn off when the car's ignition is off.OBD2 Display data: Speed, coolant temperature, voltage, mileage, clear faulty code.Alarms: over-speed alarm, high water temperature alarm, low voltage alarm, fault code alarm, fatigue driving alarm.Automatically turn on or off: After the engine is turned off for 30 seconds, the HUD will automatically shutdown; when the engine is started, it will automatically display after 5 seconds. Our HUD with a switch, whichcan be turned on and off manually. If you do not drive for a long time, it is recommended to manually turnoff the HUD. Easy to install Step1: Insert the OBD socket connector.Step2: The wire is stuffed into the A-pillar sealing strip.Step3: Connect one end of the obd interface to the HUD and place the HUD to a suitable position.