NOT KNOWN DETAILS ABOUT MERCEDES KEYS

Unlocking and locking car or truck works. All other electrics do not perform. Batterie is ok, fuses can also be Okay. Do you believe it could be the ESL or even the EIS. In case the minimal motor in the ESL device is damaged and I place in a different motor do one must reprogram ? I saw your movie and know how to just take out the ESL. Followup fro