Coolant temperature sensor B11/4 removal/installation on 281 engine, model 453 smart car.

Engine diagram showing coolant temperature sensor location with numbered callouts and service procedure steps.

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See all Powertrain 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.