Feature 1OBD2 activator, it can be used permanently in different car indefinitely, strong practicality. 2Plug and play activation via the OBD II port, simple installation and convenient to use. 3Does not support small screens, only for NTG5 large screen hosts with hard drives. 4Practical accessory fit for CClass (W205) from 20152017/for GLC X253/SClass (V/X/W222). 5Manufactured according to the original production specifications, in line with strict quality standards.Item Type: OBD2 Activator Material: ABSColor: BlueSize: Approx. 10.6 x 4.8 x 2.5cm/4.2 x 1.9 x 1in (due to manual measurement, there may be an error of 1-2 mm)Voltage: DC12VSupport:Fit for C-Class (W205) 2015-2017Fit for GLC (X253)Fit for S-Class (V/X/W222)Fit for W447 from 2014Does not support small screen, only for NTG5 big screen host with hard diskInstallation Notes:1) Turn on the ignition, Car audio headunit all turn on 2) Choose the dip on you need, Dip1 ON(234 OFF) =AUX , Dip2 ON(134 OFF)= TVFREE VIM) 3)Plug & Play activation via the OBD II port ( Under the steering wheel) 4) About 5 seconds ,OBD tool will be" Beep Beep Beep......." 5) Car Headunit will reboot 6) Remove OBD II port from car, all Done. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x OBD2 Activator