Must work with x431 GIII. To program for all keys lost with for X431 V, X431 V+, Pro5, Pros, Pro3S, X431 PAD V, PAD VII and for X-PROG3 GIII, you will need to connect the MCU3 adapter to X-PROG3 correctly. Adapter board code:307140131 When is it can be used? Use the BENCH mode to clone the ECU module, when the 120 ohm resistor is connected , or when the +12V power supply is connected to the IMMO programmer board; the IMMO programmer MCU3 adapter board (with its own power supply) can be used Applications and advantages of the new MCU3 adapter: For ADAS Advanced Driving Assist System For gearbox replacement For msv90 engine ecu replacement and cloning For Key Programming For transmission deleted and operating instructions nag2 vgs2 nag2 and vgs3 nag2 For w164 2009 Key Programming For 5th generation engine reading engine data via direct connection and online programming and coding For E chassis 8hp EGS deleted For 8hp chassis F and G delete function Key programming cas4/cas4+ all keys lost and adding keys Programming cas1 cas2 cas3 cas3+ lost keys and add key CAS4 immobilizer module replacement Replacement for engine and reading data med17 and edc17 For med9.7 ecu deleted For Replacement 4th Generation Instrument Replacement Engine replacement for MED17.5.22 Programming of lost keys and adding key for Pors-che 2011 2017 Cloning and virginization e39 ac delco Power shift cloning and virginization For ecu and Tcm conversion and ecu programming and calibrations Special features for Ch-r-ysler and registration at autoauth sgw Special features for and for Colour:Green Material:PC+Metal Package Contents: 1 * MCU3 Adapter Board Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.