Mercedes W470 Accelerator Throttle Pedal Sensor X-Class A4703000100

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W470 Accelerator Throttle Pedal Sensor X-Class is an original engine control system component responsible for precisely converting the accelerator pedal position into an electronic signal. Thanks to its factory design, Mercedes ensures stable integration with the vehicle's electronics and proper powertrain response to pedal input. This used OEM component is an excellent choice for professional repairs or restoring the full efficiency of the X-Class powertrain.

Specifications and technical data

• SKU: A4703000100
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4703000100
• Substitutable numbers: A4703000100, A 470 300 01 00
• Category: Other Brake Parts

Purpose and technical function

The accelerator pedal sensor in the Mercedes X-Class W470 operates within the electronic throttle control system (drive-by-wire), converting the movement of the gas pedal into a signal for the engine control unit. A properly functioning component:

• ensures smooth acceleration without delays or jerking,
• maintains stable idle speed during load changes,
• works in harmony with safety and comfort systems, such as traction control or cruise control,
• reduces the risk of the engine entering limp mode due to incorrect pedal position readings.

By using an original Mercedes solution, the signal characteristics remain consistent with the factory engine control unit software, which is crucial for the proper operation of the entire powertrain.

Benefits of using an original Mercedes sensor

Choosing an original accelerator pedal sensor for the X-Class W470 helps avoid issues typical of aftermarket replacements with imprecise parameters. Key advantages include:

• factory fitment for the electrical harness and gas pedal mounts,
• appropriate electrical characteristics, compliant with ECU requirements,
• reduced risk of ECU error codes related to pedal position,
• stable operation across the full range of pedal travel, even during dynamic driving.

For workshops and users, this means a more predictable diagnostic and installation process and a lower risk of needing to revisit the system shortly after installation.

Component condition and service application

The offered Mercedes W470 Accelerator Throttle Pedal Sensor X-Class is a pre-owned component, allowing for cost-effective repairs while maintaining the original design. This type of component is particularly useful in situations where:

• errors related to the gas pedal or throttle position appear,
• irregular responses to throttle input occur,
• it is necessary to replace a damaged or worn sensor following a collision or mechanical failure.

Before installation, it is recommended to perform standard diagnostic procedures and adaptation in the engine control unit according to the vehicle manufacturer's guidelines to fully utilize the factory capabilities of the powertrain control system.

Integration with other powertrain components

The accelerator pedal sensor works directly with the electronic throttle, engine control unit, and driver assistance systems. For extensive service or tuning projects, it is worth paying attention to the consistency of the entire powertrain – from the gas pedal and controller to the intake and exhaust systems. For a comparison of throttle response characteristics in various sports and production designs, you can refer to the analytical material: Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers differentiate powertrain performance depending on the vehicle's purpose.

Expanding the scope of repairs within the Mercedes brand

If you are planning a comprehensive repair or upgrade of the powertrain control area in your Mercedes and need other components from the same group, such as additional sensors, control modules, or wiring harness elements, check out the available parts in the Other Mercedes category.