Mercedes W169 W204 W212 Parking PDC Sensor Front Primed A2125420018

Mercedes W169 W204 W212 Parking PDC Sensor Front Primed is a precision component from the Parking sensors category, designed for operation in the front body zone. It provides stable support for the PDC system, facilitating maneuvering in tight spaces and reducing the risk of bumper damage. The neutral Primed finish allows for easy matching to the vehicle's target paint color.

Specifications and technical data

• SKU: A2125420018-PRIM1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2125420018
• Substitutable numbers: A2125420018, A 212 542 00 18
• Location on the vehicle: Front
• Color: Primed
• Category: Parking Sensors

Purpose and function in the vehicle

The presented sensor is designed to work in the front part of Mercedes vehicles equipped with a factory PDC system. It is responsible for detecting obstacles in the area in front of the bumper, transmitting a signal to the controller and the acoustic or visual system. A properly functioning component of this type increases the safety of maneuvers, especially during parallel parking, approaching walls, posts, or other vehicles.

Construction and surface preparation

The sensor features a compact design adapted for installation in the factory socket in the front bumper. The Primed finish means a prepared, primed surface that facilitates painting to a specific body color without the need for additional material preparation. This solution allows for a consistent visual effect with the rest of the bodywork elements.

Integration with the PDC system

As an item from the Parking sensors category, the product works with the factory electrical installation and PDC control system in Mercedes vehicles. After correct installation and connection to the wiring harness, the sensor transmits distance signals to the control module, which then generates appropriate messages for the driver. Proper integration of this component is crucial for maintaining the uniform operation of the entire set of sensors in the front bumper.

Characteristics of the used component

The offered sensor is a used component, which in practice means it comes from vehicle dismantling and has been verified for suitability for further use. Such components are often chosen for parking system service because they allow maintaining consistency with the factory installation, while keeping a favorable cost-to-functionality ratio. In the case of PDC sensors, it is important to maintain compliance with the original vehicle specification – this applies to both electrical and structural parameters.

OEM selection and practical installation tips

When replacing a parking sensor in a Mercedes, it is always worth relying on the OEM number and interchangeable numbers to ensure full compatibility with a specific body version and equipment. It is recommended to compare the shape of the housing, the type of connector, and the placement on the vehicle with the removed element. During installation, pay attention to:

• correct seating of the sensor in the bumper socket,
• cleanliness of the sensor's working surface (no dirt or paint residue),
• secure connection of the electrical installation plug,
• performing a PDC system test after installation (e.g., via diagnostics or a maneuvering test).

Expert support and selection of used electronics

In the case of components such as PDC sensors that work with vehicle electronics, proper selection by OEM number and compliance with the system configuration is particularly important. To better understand the principles of selecting and installing used modules and sensors, it is worth reading the guide: Used automotive electronics – ECU modules and second-hand sensors.

If you are planning a comprehensive repair or upgrade of the front bumper zone in your Mercedes and need other elements from the same group, such as additional sensors, mounting elements, or compatible modules working with the PDC system, check the available parts in the Mercedes parking sensors category.