This tool can drill a hole inside the ECU cover to access the BL zone without uncovering the ECU.
Due to the hardware of these ECUs, it is very hard to open them without damaging the components. For this reason this product is very useful. Using it with a vertical drill, it is possible to stop drilling right before risking any damage to the circuit board.
WARNING: USE ONLY ON MEVD17.2.4, MEVD17.2.5, MEVD17.2.8, MEVD17.2.9, MEVD17.2.H, MEVD17.2.P.