Mercedes W207 W212 Hydraulic Pump ABS Brake Control Unit Module A2124312912

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W207 W212 Hydraulic Pump ABS Brake Control Unit Module is a specialized component from the ABS and ESP System group, responsible for precise pressure control in brake circuits and vehicle stability control. Using an original module allows for maintaining the factory performance parameters of safety systems in Mercedes E-Class models and related vehicles, ensuring predictable vehicle response in emergency situations.

Specifications and technical data

• SKU: A2124312912
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2124312912
• Substitutable numbers: A2124312912, A 212 431 29 12
• Category: ABS & Stability Hydraulic Units

Function and role in the vehicle

The ABS pump with an integrated control unit is responsible for dynamic pressure modulation in the braking system during sudden braking and during the intervention of electronic stability control systems. In practice, this means:

• wheel slip control during emergency braking,
• cooperation with traction control and stability systems,
• precise control of hydraulic valves in fractions of a second,
• maintaining vehicle stability on various road surfaces.

As a result, the driver retains the ability to maneuver even during heavy braking, and the vehicle reacts in a repeatable and predictable manner.

Benefits of using an original Mercedes ABS pump

Using a factory module in Mercedes W207 and W212 series cars translates into a number of practical advantages:

• Full integration with vehicle electronics – the control unit works with factory diagnostic systems and vehicle software.
• Stable braking system performance – maintaining the characteristics specified by the manufacturer.
• Reduced risk of CAN communication errors – proper fitment to the vehicle's electrical architecture.
• Possibility of correct coding and adaptation at a service center equipped with the appropriate tester.

As a result, the brake control unit works consistently with other modules, which has a direct impact on driving safety.

Application in the ABS and ESP system

The element belongs to the ABS and ESP System group, which are key systems responsible for the vehicle's active safety. Within this group, the ABS pump acts as a central execution block that:

• receives signals from wheel speed sensors and other modules,
• processes data in the control unit and makes decisions about pressure regulation,
• controls the operation of the pump and valves to maintain traction.

A properly functioning module is particularly important in situations of sudden loss of grip, on wet or slippery surfaces, and during intensive braking from higher speeds.

Product characteristics and condition

The offered element is intended for users looking for a solution consistent with the factory Mercedes specification, while maintaining reasonable service costs. The product comes from a used vehicle, which allows for an economical repair of the braking system while maintaining the original design and compatibility with the vehicle's installation.

Before installation, it is recommended to perform a standard diagnostic procedure and, if necessary, carry out adaptation or coding of the module in accordance with the vehicle manufacturer's guidelines.

Matching by numbers and additional materials

To correctly select the ABS pump for a specific engine and equipment version, it is worth using the OEM part number and interchangeable numbers assigned to this model. This avoids problems with compatibility with the wiring harness and vehicle software. In case of doubt, specialized guides on verifying components by numbers can be helpful, such as the practical guide to checking part compatibility by OEM numbers.

If you are considering whether new or used components are a better choice for items like an ABS pump, it is worth reading a comparative analysis covering costs, durability, and quality – you will find it in the article Car parts – new or used? We compare costs, quality, and durability.

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other elements from the same group, such as pumps, controllers, or stability control modules, check the available parts in the Mercedes ABS and ESP System category.