Mercedes W164 Accelerator Gas Throttle Pedal Plug Socket Sensor A1643000004

The Mercedes W164 Accelerator Pedal Position Sensor A1643000004 is a precise component of the accelerator pedal control system, designed for Mercedes W164 series models. It is responsible for accurately converting the accelerator pedal position into an electrical signal, which directly impacts engine response and driving comfort.

Specifications and technical data

• SKU: A1643000004-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1643000004
• Substitutable numbers: A1643000004, A 164 300 00 04, A1643000104, A 164 300 01 04
• Category: Pedal Assemblies, Pads & Parts

Purpose and Function of the Accelerator Pedal Sensor

The accelerator pedal potentiometer in the Mercedes W164 is a key element of the electronic throttle control system. Its function is to continuously measure the pedal's position and transmit the signal to the engine control unit, enabling smooth power delivery and stable engine operation.

A functional accelerator pedal sensor allows for:

• precise engine response to accelerator pedal input,
• stable idle RPM,
• reduction of jerks and delays in drivetrain response,
• proper interaction with safety and traction control systems.

Category: Pedals, Pedal Covers, and Footrests

The presented component belongs to the Pedals, Pedal Covers, and Footrests group, which includes components responsible for vehicle control ergonomics and the proper transfer of signals from the driver's feet to electronic systems. In the case of the Mercedes W164, the accelerator pedal potentiometer is integrated with the pedal assembly, making its correct operation directly impact everyday driving comfort.

Selecting the correct accelerator pedal sensor for a specific engine version and model year is particularly important due to electrical compatibility and proper interaction with the engine control unit.

Benefits of Using an Original Mercedes Part

The offered potentiometer comes from the Mercedes line, meaning it retains factory operating parameters and fit. In practice, this translates to:

• compatibility with the vehicle's factory electrical system,
• correct signal characteristics for the engine control unit,
• proper fit with the accelerator pedal assembly,
• retention of the original accelerator pedal operating characteristics.

This ensures the driver receives predictable vehicle response to pedal input, and the drivetrain operates under conditions consistent with the manufacturer's design.

Condition and Service Application

The item is offered in used condition, allowing for an economical replacement of a damaged sensor while maintaining the original manufacturer's specifications. This is a practical solution for situations where symptoms such as uneven throttle response, engine limp mode, or errors related to accelerator pedal position occur.

Prior to installation, standard diagnostics of the engine control system are recommended, along with verification of part compatibility using OEM numbers and interchangeable part numbers, to ensure full compatibility with the specific Mercedes W164 version.

Fitment by Numbers and Additional Support

Due to variations between different equipment versions and engine units, the selection of the correct accelerator pedal potentiometer should always be based on the OEM part number and reference numbers. This minimizes the risk of purchasing an incompatible part and speeds up the service process.

If you wish to learn more about safely selecting components based on manufacturer designations, you can find practical tips in the article Risk-Free Online Parts Shopping – 5 Proven Ways to Verify Component Compatibility by OEM Numbers and Paint Codes, which discusses, among other things, verifying parts for Mercedes vehicles.

If you are planning a comprehensive repair or upgrade of the pedal control area in your Mercedes and need other parts from the same group, such as pedals, covers, or footrests, check the available parts in the Mercedes Pedals, Pedal Covers, and Footrests category.