Smart Fortwo 450 Fuel Tank Filler Flap Lock Actuator Q0008705V003000000

Smart Fortwo 450 Fuel Tank Filler Flap Lock Actuator is an original component from the Fuel filler flaps and accessories group, designed to control the fuel filler flap locking mechanism. It enables secure, controlled opening and closing of the flap, which improves the security of the fuel system and the convenience of daily use of your Smart vehicle.

Specifications and technical data

• SKU: Q0008705V003000000
• Mark: Smart
• Condition: Used
• OEM Part Number: Q0008705V003000000
• Substitutable numbers: Q0008705V003000000
• Category: Fuel Flaps & Components

Purpose and function of the actuator

The fuel tank filler flap lock actuator in the Smart Fortwo 450 model is responsible for mechanically disengaging the flap lock when triggered by the control system from inside the vehicle. A properly functioning component ensures:

• stable locking of the flap while driving and when parked,
• consistent operation with the central locking system or electrical control,
• easy access to the fuel filler during refueling.

Thanks to the use of an original Smart solution, the correct operating geometry of the mechanism and compatibility with the factory body mount are maintained.

Benefits of using an original Smart component

Using an actuator dedicated to the Smart Fortwo 450 helps avoid problems typical of replacements, such as inaccurate fitment or unstable operation in extreme temperatures. The original design ensures:

• appropriate extension and retraction force of the plunger,
• proper cooperation with factory wiring and connectors,
• preservation of the fuel system operating characteristics in the flap area as designed by the manufacturer.

This solution is particularly recommended for repairs of vehicles used on a daily basis, where operational predictability and reducing the risk of repeated interventions in the system are important.

Component condition and installation aspects

The presented actuator comes from the used parts group, which allows for economical repair while maintaining the manufacturer's original specifications. This type of component is a popular choice for servicing older Smart Fortwo 450 models, where combining correct functionality with reasonable maintenance costs is key.

During installation, it is recommended to:

• check the condition of the electrical harness in the area of the fuel filler flap,
• verify the free movement of the flap itself and the hinge,
• check the correct fastening of all actuator clips and guides.

Integration with the fuel system and diagnostics

A functional fuel tank filler flap lock actuator is important for trouble-free vehicle use and for protecting the filler from unauthorized access. In case of problems with opening the flap, it is worth performing basic diagnostics:

• evaluating the flap's response to the signal from the central locking or button,
• checking the electrical power supply at the actuator connector,
• verifying any mechanical jams in the guides.

For users who want to better understand the connections between the elements responsible for refueling, a guide describing the operation of the entire fuel system will be useful – it discusses in detail diagnostics, part selection by numbers, and operating principles: Fuel system – injectors, pumps and fuel tank: maintenance and regeneration.

Complementary elements and knowledge about used parts

If you are planning a comprehensive repair or upgrade of the fuel filler area in your Smart and need other elements from the same group, such as flaps, hinges, or additional mounting accessories, check the available parts in the Smart fuel filler flaps and accessories category.

When choosing components from dismantling, it is worth knowing the basic principles of their operation and maintenance to maximize their potential and limit wear in the long term. Practical tips on maintaining parts from the secondary market can be found in the guide: How to extend the life of used car parts?.