Most W204 W207 W212 ESL will damage with EIS. In this case, there are two possible reasons and solution:
ESL motor is damaged and need to replace a new motor
NEC chip is locked, theoretically it can be unlock, actually it needs to replace new ESL.
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Xhorse XKKF02EN Wire Remote Key 3 Buttons Knife Style, cloneable for some old model car.
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