The one NOT circled in the last picture is the buzzer. What you have circled is the coding piece for the cruise control comput... err, amplifier. The bigger box it's plugged into is the cruise compute... err, amplifier.

-Jason

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.