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Program Mercedes W251 AKL with VVDI Key Tool Plus

 Mercedes W251 (w164 EIS with NEC) all keys lost xhorse vvdi key tool plus failed to calculate password (data acquisition failed). Autel IM608 cannot too (ZGW connected with EZS using GBOX).

Not possible to read NEC by soldering points. Any solution?
Program Mercedes W251 AKL with VVDI Key Tool Plus 1

Program Mercedes W251 AKL with VVDI Key Tool Plus 2

Tips:
Connected on bench as showed on diagram. Voltage increased to 14v. Voltage/battery has to be very strong.  Also turn the collector slightly and clamp in that position. Autel still cannot calculate. But key tool plus is working.
Finally, key tool plus gave password.
Autel failed me again on MB.
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