Autel G-BOX3Autel G BOX3 Key Programming Adapter for Mercedes and BMW Vehicles The Autel G BOX3 is an adapter compatible with Autels MaxiIM IM608 and MaxiIM IM508 tablets (with the purchase of XP400Pro programmer) that aids in programming keys for Mercedes DAS3 CAN EIS EXS vehicles in an All Keys Lost situation. The G BOX3 also supports DME DDE ISN reading and writing in Boot Mode on applicable BMW vehicles. Bench Method is also supported. All Keys Lost password