Throttle Pedal Mercedes W447 W639 W906 Gas Accelerator Unit A4473000200

Throttle Pedal Mercedes W447 W639 W906 Gas Accelerator Unit is a factory-original component of the acceleration control system, designed for Mercedes vehicles. This used pedal with an integrated potentiometer ensures precise transmission of the throttle position signal to the engine control unit, resulting in stable pedal response and predictable vehicle behavior.

Specifications and technical data

• SKU: A4473000200-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4473000200
• Substitutable numbers: A4473000200, A 447 300 02 00, 0 280 755 025, 0280755025
• Category: Pedal Assemblies, Pads & Parts

Purpose and function in the vehicle

The presented throttle pedal with potentiometer is a component of the electronic throttle control system used in modern Mercedes commercial and passenger vehicles. It replaces traditional throttle cables by generating an electrical signal proportional to the degree of pedal depression. This allows the engine control unit to precisely determine the fuel and air dosage, which promotes smooth acceleration and stable engine operation.

This type of solution reduces the wear of mechanical components, improves signal repeatability, and facilitates integration with driver assistance systems. A properly functioning pedal with a potentiometer is crucial for driving comfort, the safety of overtaking maneuvers, and the correct operation of functions such as cruise control or electronic stability control systems (if present in the vehicle).

Construction and technical advantages

The component belongs to the Pedals, pedal pads, and footrests group, meaning it combines a mechanical part (the pedal itself) and an electronic part (the potentiometer). The applied design ensures:

• stable mounting in the factory points of the vehicle,
• appropriately selected resistance characteristics when pressed,
• a smooth output signal for the engine control unit.

Thanks to the integration of the pedal with the position sensor, the system is compact, and the number of mechanical connections is limited, which promotes durability and reduces the risk of play or jamming. This solution is particularly beneficial in vehicles used intensively, where operational repeatability and predictable throttle response are essential.

Condition, fitment, and service application

The offered item is in used condition, making it an attractive cost-effective alternative while maintaining the factory design and fitment for the vehicle installation. Choosing an original pedal with a potentiometer from the secondary market allows for reduced repair costs of the acceleration control system while maintaining compliance with the manufacturer's factory solutions.

Before installation, it is recommended to verify compatibility with the specific vehicle version and equipment configuration, as well as to perform adaptation or calibration in the engine control unit if required by the service procedure. A correctly selected and installed pedal restores proper throttle response, eliminates jerking, acceleration delays, and error messages related to the pedal position sensor.

Support in selection and additional technical information

The component has a dedicated OEM part number and associated interchangeable numbers, which facilitates clear identification and selection for a specific model. In case of doubt, it is worth using the vehicle data or service documentation to ensure full compatibility with the electrical installation and the engine control unit.

If you are planning a comprehensive repair or upgrade of the pedal control area in your Mercedes and need other components from the same group, such as a brake pedal, clutch pedal, or driver's footrest, check the available parts in the Mercedes Pedals, pedal pads, and footrests category.

Additional practical tips regarding the selection of used electronic components, principles of selection by OEM numbers, and issues of controller and sensor compatibility are provided in the guide: Used automotive electronics – how to consciously choose modules and sensors.

Summary

Throttle Pedal Mercedes W447 W639 W906 Gas Accelerator Unit is an original component of the acceleration control system, combining the function of a pedal and a position sensor. This used component allows for an economical way to restore proper throttle response while maintaining factory fitment for Mercedes vehicles. It is a practical service solution for users who expect a proven design and correct operation of the powertrain without the need to invest in a new part.