Smart 453 Fortwo ABS Wheel Speed Sensor Front Right O/S A4539055400

The Smart 453 Fortwo ABS Sensor Wheel Speed Sensor Front Right is a precise safety system component responsible for accurately reading wheel rotational speed and ensuring proper ABS system operation. With factory-fitted compatibility for the front right axle of the Smart Fortwo 453 model, this wheel speed sensor enables stable performance of braking assistance and traction control systems. A used OEM component is a sensible choice for professional brake system repairs on Smart city cars.

Specifications and technical data

• SKU: A4539055400
• Mark: Smart
• Condition: Used
• OEM Part Number: A4539055400
• Substitutable numbers: A4539055400, A 453 905 54 00
• Location on the vehicle: Front, Right
• Category: ABS Speed Sensors

Function and Application of the Wheel Speed Sensor

The front right wheel speed sensor for the Smart Fortwo 453 is responsible for:

• continuous measurement of the rotational speed of the right front wheel,
• transmitting the signal to the ABS control unit,
• cooperating with stability control and traction control systems (if equipped on the vehicle),
• preventing wheel lock-up during intense braking.

A functional sensor in the ABS Speed Sensor category is crucial for maintaining predictable vehicle behavior on wet, slippery, or uneven surfaces.

Compatibility and Fitment for Smart Fortwo 453

The presented component is specifically designed for the front right axle of the Smart 453 Fortwo model. This means:

• geometry adapted to the hub and steering knuckle of this model,
• appropriate signal cable length and correct electrical connector,
• easier installation without the need for wiring modifications.

This allows the sensor to be used as a direct replacement for the factory part, simplifying servicing and reducing vehicle downtime.

Characteristics of a Used OEM Component

The offered ABS sensor is a used part, sourced from disassembly, allowing for a combination of favorable cost and adherence to factory manufacturing standards. In practice, this means:

• retention of the original signal characteristics required by the Smart control unit,
• compatibility with the factory wiring harness and mounting points,
• suitability for professional repairs of brake and drivetrain systems.

A used wheel speed sensor is a good solution when technical correctness and fitment to a specific vehicle body version and axle are the priority.

Importance of a Functional ABS Sensor for Safety

Malfunctioning of the wheel speed sensor can lead to the ABS warning light illuminating, extended braking distances, and improper operation of stability systems. Replacement with a functional part:

• restores correct pressure modulation in the braking system,
• ensures uniform ABS operation on all wheels,
• reduces the risk of skidding during sudden braking.

For city cars like the Smart Fortwo 453, which often involve sudden maneuvers and frequent braking, a properly functioning ABS sensor directly impacts the comfort and safety of daily operation.

If you are planning a comprehensive repair or upgrade of the braking area in your Smart and require other parts from the same group, such as additional sensors, signal cables, or mounting components, check the available parts in the Smart ABS Speed Sensor category.

Practical Installation Tips and Selection of Used Parts

When selecting a used ABS sensor for the Smart Fortwo 453, pay attention to:

• correct placement on the vehicle (front, right side),
• condition of the electrical connector and signal cable,
• cleanliness of the working surface around the wheel hub.

More practical information on how to consciously choose used drivetrain components and sensors can be found in the guide Second-hand Differentials – What You Should Know About Used Differentials, Sensors, and Drivetrain Systems, which discusses common mistakes and criteria for assessing the condition of such components.

If you want to compare the cost-effectiveness of purchasing original, aftermarket, and used parts in terms of budget and quality, the article Original, Aftermarket, or Used – Which Car Parts Are Most Cost-Effective? will also be helpful, containing practical comparisons and tips for selecting parts by OEM numbers.