YAW Rate Sensor Mercedes W203 W209 R171 Accelerator Speed Module A0045429218

The Mercedes W203 W209 R17 ESP Speed Sensor is a component from the Electronic Control Units and Controllers category, designed for the Electronic Stability Program (ESP) system in Mercedes vehicles. A used ESP speed sensor allows for an economical yet professional repair of the electronic system, maintaining the system's original operational characteristics.

Specifications and technical data

• SKU: A0045429218
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0045429218
• Substitutable numbers: A0045429218, A 004 542 92 18
• Category: ECUs & Computer Modules

Purpose and Function of the ESP Speed Sensor

The Mercedes W203 W209 R17 ESP Speed Sensor works with the electronic stability control system, analyzing wheel rotational speed and vehicle dynamics. Based on signals from the sensor, the ESP control unit can precisely adjust the braking and drivetrain systems, enhancing safety during acceleration, braking, and cornering.

This component is essential wherever the following are required:

• stable ESP system operation under varying grip conditions,
• proper cooperation with other vehicle electronic modules,
• maintenance of the car's original driving parameters.

Benefits of Using an Original Electronic Module

As part of the Electronic Control Units and Controllers group, the ESP speed sensor is designed for Mercedes' specific electrical architecture. This ensures:

• proper communication with the vehicle's bus system,
• reduced risk of diagnostic errors and dashboard warning messages,
• easier work for service technicians during system coding and adaptation.

A used OEM part is a solution that combines cost control with adherence to the ESP system's factory specifications.

Selection by OEM Number and Interchangeable Numbers

For automotive electronics, compatibility with manufacturer markings is crucial. This ESP speed sensor has a dedicated OEM part number and associated interchangeable numbers, enabling precise identification and matching to a specific vehicle version. When selecting, it is advisable to consult service documentation or VIN data to ensure full hardware and software compatibility.

If you are interested in other Mercedes Electronic Control Units and Controllers, check out the Mercedes Electronic Control Units and Controllers available in our assortment to select components that fit a specific model and generation of car.

Used Electronics – A Conscious Service Choice

Choosing a used ESP speed sensor is a sensible alternative to new components, especially for older vehicle generations. A properly selected module allows for:

• maintaining ESP system functionality at lower repair costs,
• preserving the original operating characteristics of the safety system,
• reducing the risk of compatibility issues typical of low-quality aftermarket parts.

More practical information on selecting and installing used electronics can be found in the guide Used Automotive Electronics On Board – Why Choose Used ECU Modules and Sensors?, which discusses aspects such as marking compatibility, installation procedures, and common service questions.

Summary

The Mercedes W203 W209 R17 ESP Speed Sensor is a practical solution for owners and service centers looking to restore the full functionality of the stability control system in Mercedes vehicles. A properly selected component from the Electronic Control Units and Controllers category supports safe driving, ensures correct interaction with other onboard electronics, and allows for optimized repair costs without compromising OEM quality.