Your original seat had: "passenger seat occupied recognition sensor". The new one has: "Passenger seat occupied recognition with automatic child seat recognition (ACSR)". Different animals.

You will either have to swap the sensors in the seats or the system won't work properly. It any case you will need a scanner to reset the light.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician