Throttle Pedal Mercedes W204 W207 W212 W222 Accelerator Pedal Unit A2043000204

Throttle Pedal Mercedes W204 W207 W212 W222 Accelerator Pedal Unit is an original acceleration control system component designed for Mercedes mid-size and luxury models. As part of the Pedals, pedal pads and footrests group, it is responsible for precisely transmitting the pedal position signal to the engine control unit, which translates into predictable throttle response and stable drivetrain operation. Using this OEM component allows you to maintain the factory performance characteristics of the powertrain without the need for aftermarket replacements with uncertain parameters.

Specifications and technical data

• SKU: A2043000204-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2043000204
• Substitutable numbers: A2043000204, A 204 300 02 04
• Category: Pedal Assemblies, Pads & Parts

Function and role of the accelerator pedal sensor

The accelerator pedal sensor in the discussed Mercedes models plays a key role in electronic throttle control. It is responsible for:

• accurate reading of the accelerator pedal position throughout its entire range of operation,
• stable signal transmission to the engine control unit,
• maintaining smooth response to throttle input and release,
• ensuring consistent cooperation with safety and driving comfort systems.

Thanks to the use of an original sensor, factory calibration is maintained, which reduces the risk of incorrect throttle response, jerking, or unpredictable engine speed changes.

Compatibility with Mercedes platforms

The presented sensor has been designed for Mercedes W204, W207, W212, and W222 platforms, which means it is perfectly matched to the electrical and mechanical architecture of these generations. In practice, this translates into:

• compatibility with factory wiring harnesses and connectors,
• proper mounting within the pedal assembly,
• consistency with the software of control units used in these models.

Choosing a used OEM component allows you to maintain the original performance characteristics of the powertrain, which is particularly important in premium class cars, where predictability and repeatability of vehicle response are essential.

Benefits of using an original sensor

Using an original accelerator pedal sensor in Mercedes W204, W207, W212, and W222 models brings a number of practical service and operational benefits:

• Factory fit – no need for installation modifications, drilling, or mechanical adaptation.
• Consistent pedal feel – maintaining the throttle "feel" known to the driver, which is important for daily use and long-distance travel.
• Reduced risk of control unit errors – the original component minimizes the occurrence of errors related to incorrect sensor signals.
• Better predictability in the operation of automatic transmissions, which use information about the accelerator pedal position when selecting gears.

Service purpose and installation

The accelerator pedal sensor from this product group is intended primarily as a replacement part in the event of:

• errors related to the accelerator pedal signal,
• uneven throttle response or acceleration delays,
• mechanical damage to the pedal assembly after a collision or intensive use.

In most cases, replacing the sensor involves removing the pedal assembly, disconnecting the electrical connector, and installing a functional component in place of the worn one. Thanks to the factory design, it is possible to quickly restore proper system operation without additional modifications.

Expanding the pedal control area service

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

Technical support for service work

For more advanced work on the powertrain and acceleration control system, a broader look at the relationships between engine accessories and control electronics may be helpful. In this context, it is worth reading an article describing the characteristics of the OM642 unit, its typical faults, and the impact of accessories on operating refinement – you can find it here: The second life of the Mercedes OM642 engine – how injectors and turbochargers restore the power of the 3.0 V6 CDI.