Throttle Pedal Mercedes W204 W207 W212 W222 Accelerator Pedal Unit A2043000204

Visual condition of the part

The product shows signs of use visible in the photos.

Throttle Pedal Mercedes W204 W207 W212 W222 Accelerator Pedal Unit is an original acceleration control system component designed for Mercedes mid-range and luxury models. Thanks to the use of an electronic potentiometer, the pedal ensures precise signal transmission to the engine control unit, which translates into stable throttle response and predictable vehicle behavior. This solution allows for maintaining the factory drive characteristics and consistency with the vehicle's other electronic systems.

Specifications and technical data

• SKU: A2043000204-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2043000204
• Substitutable numbers: A2043000204, A 204 300 02 04
• Category: Pedal Assemblies, Pads & Parts

Purpose and function of the accelerator pedal

The presented accelerator pedal with a potentiometer is a component of the electronic throttle control system in Mercedes W204, W207, W212, and W222 series cars. It replaces the classic mechanical cable, generating an electrical signal proportional to the pedal depression. This allows the engine control unit to precisely determine the fuel dose and throttle opening angle, which promotes smooth acceleration and stable operation of the power unit in various road conditions.

The electronic potentiometer in the accelerator pedal works with safety and comfort systems, such as traction control or driver assistance systems, which is why using an original component is important for maintaining proper communication within the vehicle's network.

Construction and technical characteristics

The accelerator pedal is a complete module integrated with a potentiometer, prepared for installation in factory mounting points in the corresponding Mercedes models. The construction is based on a solid body with the pedal operating part and an electronic section containing a position sensor. The technology used allows for multiple, repeatable position readings without the need for mechanical adjustment.

The module has been designed for operation in the driver's cabin, where it is exposed to variable loads, vibrations, and different temperature ranges. Properly selected materials and pedal geometry ensure ergonomic travel and predictable resistance, which facilitates precise acceleration control in both city and highway driving.

Benefits of using the original accelerator pedal

Using the original accelerator pedal with a potentiometer in Mercedes cars brings a number of practical benefits:

• maintaining factory throttle response characteristics, in accordance with the manufacturer's specifications,
• consistent cooperation with engine electronics and driver assistance systems,
• proper fit to the vehicle's mounts and interior, without the need for modifications,
• reduced risk of communication errors with the control unit compared to low-quality replacements.

An element from this group is crucial for driving comfort – the car's reaction to the driver's right foot depends on its operation. A properly selected module allows for maintaining repeatable and predictable dynamics of the vehicle, which is particularly important in premium class cars.

Condition, selection, and practical application

The offered accelerator pedal comes from a Mercedes vehicle and belongs to the Pedals, pedal pads, and footrests group. Before installation, it is recommended to perform a standard verification of the electrical installation and connector, and after installation – to check for proper operation during a test drive. In many cases, after replacing the module, the electronic system automatically adapts the new values, which simplifies the service process.

If you are planning a comprehensive repair or upgrade of the acceleration control zone in your Mercedes and need other elements from the same group, such as additional pedals, pads, or footrests, check the available parts in the Mercedes Pedals, pedal pads, and footrests category.

Technical support and knowledge about AWD drives

In Mercedes vehicles equipped with advanced all-wheel-drive systems, the proper operation of the accelerator pedal has a direct impact on torque distribution and the operation of traction systems. For drivers interested in a broader context of how drive systems work and the selection of used components, an article comparing different AWD solutions may be useful, available here: xDrive, 4Matic, quattro or 4Motion – a comparison of AWD drives from BMW, Mercedes, Audi, and VW.