4D0907379K AUDI A4 B5 ABS EDS ECU Control Module 0265109031 – OEM Used & Tested

Description

OEM numbers 4D0907379K and 0265109031 identify this as a genuine Audi ABS and EDS control module for the A4 B5. Sourced from a running donor vehicle and tested prior to listing, this is genuine used OEM stock.

The ABS/EDS control module manages both anti-lock braking and electronic differential lock functions on the Audi A4 B5. It reads wheel speed data from all four sensors continuously, detecting impending wheel lock-up during braking and wheelspin during acceleration. ABS modulates hydraulic brake pressure at individual corners to prevent lock-up and maintain steering control during hard braking. EDS (Electronic Differential Lock) applies braking force to a spinning driven wheel, transferring torque effectively to the wheel with greater traction, without the mechanical complexity of a traditional limited-slip differential. The module communicates with the hydraulic control unit, instrument cluster and engine management system via the vehicle’s data bus.

A failing ABS/EDS module on the Audi A4 B5 may produce an ABS or EDS warning light on the instrument cluster, deactivation of anti-lock braking or electronic differential lock functions, fault codes stored in the module readable via VCDS, ODIS or a compatible diagnostic tool, excessive driven-wheel spin during acceleration on low-grip surfaces, or irregular brake pedal response during ABS intervention.

This unit is in good used condition and is ready for fitment. Always verify the OEM part number precisely against your vehicle’s own reference before ordering, as part numbers vary across A4 B5 production. Professional installation is strongly recommended, and coding or adaptation with VCDS or compatible Audi diagnostic software may be required before the module operates correctly. A 14-day return period applies to all orders.