Specifications: Introduction If your car\'\'s check engine light is on, you need this device. Autoscanner is a handy device for reading and erasing trouble code for your vehicles. It is small in size, fashionable in design, competitive in price and easy to use. This is a stand alone unit, it does not need a laptop computer to operate. By simply connecting autoscanner with the diagnostic socket, the user will be able to read the trouble code, identify and locate the troubles by consulting the trouble code description on the user\'\'s manual. Each trouble code discovered will be displayed on autoscanner for 3 times.3 cycles later, all the trouble codes will be automatically erased. To prevent the code being erased simply remove the unit. It has two dynamic control keys, very convenient in operating. With the autoscanner, you may quickly find out trouble causes of electronically controlled systems on your car by reading the trouble code (dtc) shown on this device, and checking out trouble causes with attached manual. Though so small, it is of the same function as special tool of its kind and applicable to benz diagnostic socket. Features Automatic reading and erasing of trouble codes Extinguishes the check engine light Small and portable, easy to use;cost-effective Highly accurate