Calibrate electric controller unit for distance warning function with active brake intervention on chassis 453 with code 258.

Smart Fortwo 453 front view and engine bay showing controller unit A90 location with callout 13, plus adjustment device and four-step calibration procedure.

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See all Chassis figures for the Fortwo / Forfour (453), 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.