4D0907379D AUDI A6, A4, C4, B5 ABS ECU Control Module 0265108005 – OEM Used & Tested

Description

OEM numbers 4D0907379D and 0265108005 identify this as a genuine Audi ABS control module compatible with the A6 C4 and A4 B5 model ranges. Sourced from a running donor vehicle and tested prior to listing, this is genuine used OEM stock.

The ABS control module is the central processing unit for the anti-lock braking system on the Audi A6 C4 and A4 B5. It continuously monitors wheel speed sensor signals from all four corners to detect the onset of wheel lock-up during braking. When lock-up is imminent, the module rapidly pulses hydraulic pressure at the affected wheel or wheels, allowing the tyre to maintain rolling contact with the road and preserving steering control during hard braking. On suitably equipped variants it also coordinates with the engine management system to assist traction control and braking stability under deceleration. The module interfaces with the hydraulic unit and the vehicle’s instrument cluster.

Symptoms of a failing ABS module on these Audi models include an ABS warning light illuminating on the instrument cluster, loss of anti-lock braking function, fault codes stored in the ABS module readable via VCDS, ODIS or a compatible scanner, abnormal brake pedal pulsation during ABS operation, or wheel lock-up occurring under hard braking where it would not normally be expected.

This unit is in good used condition and is ready for fitment. Always verify the OEM part number precisely against your vehicle’s reference — part numbers vary across A6 C4 and A4 B5 production runs. Professional installation is strongly recommended, and coding or adaptation with VCDS or compatible Audi diagnostic equipment may be required before the module operates correctly. A 14-day return period applies to all orders.