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Convertible Top Switch

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Top stuck, slow to move, or not responding? Replace a worn convertible top switch to regain smooth roof control and make open-air driving easy again. Find direct-fit options at A-Premium.

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Opening Closing Convertible Roof Top Switch for Smart W451 Fortwo 2007-2015

A-Premium®Part # APCTS001

Opening Closing Convertible Roof Top Switch for Smart W451 Fortwo 2007-2015

$30.99

Low stock: Only 5 left

Enter ZIP codeFree standard shipping

1-year warranty

90 days free return

Fits 2007 - 2015 Smart Fortwo, 2007 - 2015 Smart Fortwo

Check if this fits your vehicle

Item LocatedUnited States

Installation PositionFront

Smart Fortwo W451 Convertible Top Switch Applications

This convertible top switch is identified for 2007-2015 Smart Fortwo W451 applications. The replacement is a front-mounted open-and-close switch, so use the vehicle generation and model years before any physical comparison. It is not intended for unrelated convertible systems. Use the W451 application and the stated OE references as the primary fitment guide.

Match the OE Number, Button Layout, and Connector

OE numbers 4518203810 and A4518203810 are associated with this switch. The button icons, connector shape, and mounting tabs should also follow the original part because these details determine how the switch fits the console and connects to the vehicle. A similar black rocker or roof-control button from another model is not enough. Use both the identification number and the physical layout.

Convertible Roof Switch vs Top Motor or Hydraulic Failure

The switch sends the driver's open or close command; it is not the roof motor, hydraulic pump, cylinder, latch motor, or fabric top. A roof that does not move can have faults elsewhere in the system, so a symptom alone does not prove the switch has failed. Identify whether the command switch is the component being serviced before buying an electrical replacement.

What This Replacement Switch Includes

The replacement is the electrical opening-and-closing switch itself. It does not represent a complete convertible-top system, a motor, hydraulic hardware, or a roof wiring harness. Note the package description and plan the repair around the single switch. If other roof components are damaged, they require their own diagnosis and part selection rather than being assumed to come with this item.

Frequently Asked Questions (FAQ)

Which Smart Fortwo years are identified for this convertible top switch?

The specified application is the 2007-2015 Smart Fortwo W451. Use the model generation and year range together, then make sure the OE number and connector layout agree with the switch being replaced.

Is the convertible top switch the same as the roof motor?

No. The switch sends the command, while the motor or hydraulic system moves the roof. Determine which part has failed before ordering so the replacement addresses the correct function.

Which OE numbers are associated with this switch?

The identified OE references are 4518203810 and A4518203810. Use either number with the Smart Fortwo W451 application, then look at the button layout and plug shape.

Does the replacement include a motor or hydraulic parts?

No. It is a single roof-control switch. A motor, pump, cylinder, latch component, or wiring harness would be a separate part and should be selected only if the repair calls for it.