Mercedes Benz W212 W218 ESP Control Module ABS Pump A2124313512 – Original Used Part

Diagnosis and Common Symptoms

The ESP (Electronic Stability Program) unit is the nerve center of your Mercedes-Benz braking and stability system. When this module fails on the W212 E-Class or W218 CLS, it typically triggers a cascade of errors. Technicians often see fault codes such as C1000 (Internal Controller Malfunction), C1101, or pressure sensor plausibility errors. On the dashboard, you will likely see "ESP Inoperative" or "ABS Currently Unavailable" messages. Drivers may experience a loss of cruise control, stiff power steering, and the vehicle may enter a limp home mode. If the pump motor itself has failed, you might hear a continuous humming noise or no noise at all during the self-test phase upon startup.

Introduction

This is a Genuine Mercedes-Benz ESP control module and ABS pump assembly, salvaged from a donor vehicle and subjected to rigorous electrical and hydraulic testing. We understand that a new unit from the dealership carries a prohibitive cost, which is why we provide a verified Genuine used alternative that maintains the safety integrity of your braking system. Every unit in our inventory is inspected for terminal corrosion and hydraulic port integrity to ensure it meets our strict mechanical standards before being cataloged.

Product Details

• Brand: Mercedes-Benz
• Model Compatibility: W212 E-Class (2010-2016), W218 CLS-Class (2011-2018)
• Part Name: ESP Control Module / ABS Hydraulic Block
• Part Number: A2124313512
• Condition: Genuine Used (Tested Working)
• Notes: This unit must be installed by a qualified technician. The hydraulic system will require a full bleed procedure using a pressure bleeder and Mercedes-specific diagnostic software.