ABS rings for Audi A4 Avant S4 Quattro

ABS rings for Audi A4 Avant S4 Quattro

Owning an Audi A4 Avant S4 Quattro means valuing both performance and safety. The drivetrain in these cars is technically advanced to handle the engine's power and distribute it effectively through the Quattro system. A small yet essential component in this setup is the ABS ring, also known as an ABS reluctor ring. This component is mounted on the CV joint and is vital for ensuring the vehicle's anti-lock braking system operates correctly. For a four-wheel-drive car, it is especially important that every sensor delivers precise readings so as not to disrupt power distribution or electronic stability control.

Here at CVJoint24 you will find model-matched ABS rings specifically developed to meet the demands of your Audi A4 Avant S4 Quattro. We focus on quality and durability, knowing that these cars are frequently driven in demanding conditions. By selecting the correct spare part, you ensure that the car's safety systems can work without interruption, providing a safer driving experience in all road conditions.

What does the ABS ring do on an Audi A4 Avant S4 Quattro?

The ABS ring plays a central role in the car's active safety systems. It acts as a toothed ring rotating alongside the wheel. A magnetic sensor, the ABS sensor, reads the teeth on the ring as the wheel turns and transmits this data to the vehicle's control unit. The control unit uses this information to determine whether a wheel is locking up under braking or spinning under acceleration. For an S4 Quattro, this signal is also vital for the all-wheel-drive system to adjust torque between the front and rear axles optimally.

If the ABS ring is damaged, the signal can become erratic or drop out entirely. As a result, the system can no longer rely on data from that specific wheel, which frequently causes the ABS function to disengage completely for safety reasons. For a performance car like the Audi S4, it is vital that these systems work seamlessly to maintain the car's characteristic road holding and braking ability in every scenario.

Common signs of wear

The most frequent problem with an ABS ring on the Audi A4 Avant S4 Quattro is corrosion or cracking. Because the ring is exposed to weather, grime and road salt, rust can develop underneath the ring on the CV joint. This rust pressure can eventually cause the ring to crack, altering the spacing between the teeth. A clear sign of this is the ABS engaging during normal, low-speed braking just before the car comes to a complete halt. You may feel a pulsation in the brake pedal even on dry, smooth tarmac.

Another common symptom is the ABS warning light or stability control light (ESP/ESC) illuminating on the dashboard. In some instances, the four-wheel-drive system may also behave erratically if it receives incorrect wheel speed inputs. If you notice any of these signs, it is important to inspect the ABS rings visually. A cracked ring is usually easy to spot by removing the road wheel and looking closely at the outer section of the constant velocity joint.

How to choose the correct ABS ring

When purchasing a replacement ABS ring for your Audi A4 Avant S4 Quattro, it is important to verify key technical specifications. The main differences between rings are the tooth count and the internal diameter. Fitting a ring with an incorrect number of teeth will cause the car's computer to calculate an incorrect wheel speed relative to the other wheels, immediately triggering a system fault. It is therefore always safest to filter by your car's make, model and engine when sourcing spare parts from us.

Because the S4 model can feature specific components compared to standard A4 versions, extra care is recommended. Check the dimensions of your original ring where possible, or use our selector to find the correct fitment straight away. We have made it simple to find the exact part suited to your model year and drivetrain, avoiding unnecessary returns and letting you finish the repair quickly and smoothly.

Related components to check

Make sure to inspect these exact pages for the same vehicle when working on the ABS ring:

When a driveline component shows signs of wear, neighbouring parts on the same car often need inspection too. By comparing these dedicated pages for the Audi A4 Avant S4 Quattro, it is easier to determine whether the issue lies purely with the ABS ring or another connected part of the drivetrain.

This is especially true for models where vibrations, play and noises can transmit symptoms across multiple driveline parts. A quick check of related categories reduces the risk of replacing the right type of component while overlooking an adjacent part causing the same fault.

• Audi A4 Avant S4 Quattro
• Drive shafts for Audi A4 Avant S4 Quattro
• Outer CV joints for Audi A4 Avant S4 Quattro
• Inner CV joints for Audi A4 Avant S4 Quattro

While replacing an ABS ring, it is sensible to inspect the surrounding drivetrain components. In many cases, corrosion on the CV joint itself causes the ring to crack, and it may be more practical or economical to replace the complete joint if it already shows wear or has a split CV boot. A damaged boot quickly allows dirt to penetrate and destroy the joint, which will eventually damage the entire drive shaft.

Here are several related categories relevant to your Audi A4 Avant S4 Quattro:

• Drive shafts for Audi A4 Avant S4 Quattro – If the complete shaft needs replacement.
• Outer CV joints for Audi A4 Avant S4 Quattro – Where the ABS ring is typically mounted.
• Inner CV joints for Audi A4 Avant S4 Quattro – Essential for eliminating vibrations under acceleration.
• Propeller shafts for Audi A4 Avant S4 Quattro – Central component of the Quattro system that should be inspected for play.

Why shop at CVJoint24?

CVJoint24 is your dedicated specialist for drivetrain and transmission components. As a Swedish specialist, we offer an inventory depth that few competitors can match. We understand the technical nuances between different Audi models and ensure you receive car parts that truly fit. With our fitment guarantee and easy search by make, model and engine, we minimise the risk of incorrect orders, saving you time and money in the garage.

We always aim to provide optimal value by combining specialist knowledge with prompt delivery across the EU. When ordering an ABS ring for your Audi A4 Avant S4 Quattro from us, you can trust that the product meets high standards and is ready for installation. Our goal is to be the obvious choice for motorists needing the right component straight away, whether it is a single ABS reluctor ring or a complete driveshaft.