Audi R8 & Lamborghini Huracan ABS Module Failure (2015-2024): AWD vs. RWD and Programming Guide

Known Issues and Vehicle-Specific Information

The ABS control module, part number family 4S0907379, is shared between the 2017-2023 Audi R8 and the 2015-2024 Lamborghini Huracan due to their shared vehicle platform. While the part is physically similar across these models, there are critical differences between All-Wheel Drive (AWD) and Rear-Wheel Drive (RWD) versions that buyers must be aware of. Failure is typically due to internal electronic issues on the circuit board caused by heat and vibration over time, rather than mechanical wear.

Recalls and Technical Service Bulletins (TSBs)

As of early 2026, there are no specific NHTSA recalls for the ABS control module on the 2017-2023 Audi R8 or 2015-2024 Lamborghini Huracan. Existing recalls for these vehicles primarily concern issues like headlight adjustment and rearview camera software.

Symptoms of a Failing ABS Control Module

When the ABS module fails, it typically disables the anti-lock braking and stability control systems, triggering multiple warning lights on the dashboard.

• ABS, ESC, and Brake Warning Lights: The most common symptom is the illumination of the ABS, Electronic Stability Control (ESC/ESP), and sometimes a red 'BRAKE' warning light on the instrument cluster.
• Inaccurate or Dead Speedometer: In many modern cars, the ABS module processes wheel speed data and sends it to the speedometer. A faulty module can cause the speedometer to stop working or behave erratically.
• Disabled Safety Systems: With the module offline, the anti-lock braking, traction control, and stability control features will not function. This means the wheels can lock up during hard braking, increasing the risk of a skid.
• ABS Pump Constantly Running: A faulty module might send incorrect signals, causing the ABS pump motor to run continuously, even when the car is off. This can drain the battery and burn out the pump motor.
• Changes in Brake Pedal Feel: The brake pedal may feel harder to press or spongy, as the module's control over the hydraulic valves is compromised.

Associated OBD-II Diagnostic Trouble Codes (DTCs)

A professional scan tool that can read Audi/Lamborghini-specific codes is required for accurate diagnosis. Generic OBD-II readers may not be able to communicate with the ABS module. Common codes pointing to a module failure include:

• C0121: ABS Control Module
• U3000: Control Module. This code can also appear if the electronic module is not seated correctly on the hydraulic pump's solenoids after reassembly.
• Codes related to wheel speed sensor circuits (e.g., C0035, C0040) or pump motor faults (e.g., C0060) can also be triggered by an internal module failure.

Replacement and Programming

Replacing the ABS module on the R8 and Huracan is a multi-step process that requires both mechanical and electronic work. The module assembly is located in the front trunk ('frunk'), typically on the driver's side.

Option 1: Replace Electronics Only (Recommended)

In most cases, only the electronic part of the module fails. The electronic controller is typically held to the hydraulic pump block by several Torx screws. It is often possible to carefully remove just the electronic module without disconnecting any of the hard brake lines.

Advantages:

• No Brake Bleeding Required: This is the biggest advantage, saving significant time and complexity.
• Lower Labor Cost: The procedure is much faster than replacing the entire assembly.

Option 2: Replace Entire ABS Pump & Module Assembly

If the hydraulic pump itself has failed or you are replacing the entire unit, all brake lines must be disconnected. This will introduce air into the system and requires a full brake bleed after installation.

Programming is NOT Optional

Any replacement ABS module—whether new, used, or remanufactured—must be programmed to your vehicle. It is not a plug-and-play part. The module needs to be coded with your car's specific information, such as its VIN, drivetrain (AWD/RWD), and brake type (iron or carbon ceramic).

• Who can program it? An Audi/Lamborghini dealer or a qualified independent European auto shop with dealer-level tools like ODIS with an online GEKO account can perform the programming. Advanced DIYers with tools like Ross-Tech VCDS may also be able to perform the coding.
• Basic Settings/Calibration: After coding, the module often requires a 'basic setting' or calibration procedure. This typically involves a test drive with specific maneuvers to calibrate the Steering Angle Sensor (G85) and other sensors. The scan tool will guide the technician through this process.
• Anti-Theft: This module is generally not tied to the vehicle's immobilizer or component protection system, meaning a dealer visit is not mandatory if an independent shop has the correct tools.

Buying a Used ABS Control Module

A used OEM module is a smart, cost-effective choice compared to a new dealer part. However, careful inspection and verification are essential.

• Verify the Part Number: This is the most critical step. The part number on the replacement module MUST match your vehicle's requirements (AWD vs. RWD). Double-check the numbers listed in the compatibility warning above against the part you are buying.
• Inspect for Damage: Check the main electrical connector and pins for any signs of corrosion, bending, or damage. Do not buy a module with a damaged connector.
• Source from a Reputable Seller: Purchase from a supplier that specializes in recycled OEM parts and offers a warranty. This provides protection in case the part is faulty.
• Acceptable Mileage: Mileage is less of a concern for this electronic part than for a mechanical one. The condition and proper functioning are more important. However, a lower-mileage part is always preferable.
• Why Used OEM is a Good Choice: Used OEM modules are made to the manufacturer's original quality standards. They are a reliable alternative to expensive new parts, provided they are programmed correctly. Aftermarket options are not widely available for these specific vehicles.

Cost Comparison

Prices can vary based on location and supplier, but this provides a general estimate for replacing the ABS module.

Frequently Asked Questions (FAQ)