Auto scanner for Benz C-Class is newly developed and specially designed for car owners or DIYs. With an auto scanner, you may quickly find out the trouble causes of electronically controlled systems on your car by reading the trouble code (DTC) shown on the auto-scanner and checking out trouble causes with the attached manual. Though so small, it is of the same function as special tool of its kind and applicable to 16 pin socket Mercedes Benz C-Class. It is compatible with C32, C55, C180, C200, C230, C240, C320, CLK55, CLK200, CLK240, CLK320, CLK500, CL55, CL65, CL500, CL600. Functions: 1) Reading trouble codes: when press the READ button, the auto scanner will read DTCs of power-train system one by one 2) Clearing trouble codes: when press the CLEAR button, the auto scanner will clear DTCs of power-train system Operation: 1) When the CHECK ENGINE light is on, stop the car and apply the parking brake, start the engine then plug the auto scanner to the 16-pin socket usually located under the instrument panel in the car 2) It will display the brand name UIF twice; then press the READ button, it will read the trouble code reader trouble code and display 3 times. If there is no trouble code, it will display -- -- -- -- 3) When press the ERASE button, it will clear the trouble codes 4) In case that the auto scanner can not be plugged in directly or codes can not be seen due to socket facing downward, use the extension cable with the female plug to connect with auto scanner and 16-pin plug with socket Specifications: 1) Length: 32 2) Head unit dimensions: 2-1/8 x 3-1/8 x 3/4 3) Port: 16-pin OBDII standard socket 4) LED display 5) No batteries needed 6) Power is directly supplied by the diagnostic socket 7) Net weight: 0.21kg