Front CMS components location with acceleration sensors B48/1 and B48/2, horn H2, and electrical connectors on Smart 450/451/452/454.

Labeled diagram showing front CMS module, screws, connectors, and acceleration sensors with remove/install procedures.

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See all Electrical figures for the Fortwo (450), or browse the full figure library. Part numbers and callouts are community-sourced and cross-referenced against the manuals — confirm with your VIN before ordering.