ABS rings for Volvo S40 2.0 T4
To ensure your Volvo S40 2.0 T4 retains proper ABS function, a fault-free sensor ring is essential. This category is filtered specifically for ABS rings suited to your front-wheel-drive...
Products for ABS rings for Volvo S40 2.0 T4
ABS rings for Volvo S40 2.0 T4
The Volvo S40 2.0 T4 is a model that requires precision in every component, not least when it comes to safety systems such as ABS. The ABS ring, also known as an ABS reluctor ring or tone wheel, is a critical part of the car's anti-lock braking system. For the T4 variant in particular, with its powerful turbocharged engine, it is especially important that all systems work in sync to manage the car's performance. A cracked or corroded ring can cause safety systems to behave unpredictably, affecting both driving feel and overall safety. At CVJoint24, we specialise in supplying precisely the right parts for your Volvo S40 2.0 T4, allowing you to maintain the car's original performance and safety levels without compromise.
What does the ABS ring do on a Volvo S40 2.0 T4?
The ABS ring on a Volvo S40 2.0 T4 is mounted on the outer CV joint and rotates together with the wheel. Its primary job is to serve as a reference point for the ABS sensor. The ring features a specific number of teeth that create a magnetic pulse as they pass the sensor. This information is transmitted to the vehicle's engine control unit (ECU), which calculates the precise speed of each wheel. If a wheel threatens to lock up during braking, the system detects this via the signal from the ABS ring and instantly adjusts brake pressure. For a front-wheel-drive car like the S40 T4, this function is crucial for retaining steering control under heavy braking or on slippery surfaces, making the condition of the ring a top priority for any responsible owner.
Common signs of wear
The most common sign that an ABS ring on your Volvo S40 2.0 T4 needs replacing is the ABS warning light illuminating on the dashboard. Often the fault appears intermittent at first, with the lamp switching on and off with no clear logic. Another very common symptom is the ABS system kicking in and pulsing or juddering through the brake pedal during ordinary, low-speed braking just before the car comes to a complete halt. This is usually caused by a crack in the ring due to rust forming on the CV joint underneath it. The crack expands the gap between two teeth, tricking the sensor into believing the wheel has stopped turning. If you experience these vibrations or see warning lamps, it is high time to inspect the physical condition of the rings thoroughly.
How to choose the correct ABS ring
Selecting the correct ABS ring for your Volvo S40 2.0 T4 requires paying attention to technical specifications. There are variations in both the tooth count and the internal diameter of the ring depending on model year and specific chassis numbers. For the S40 series, rings with 44 or 48 teeth are common, and choosing the wrong one means the system cannot read wheel speed correctly, disabling ABS function entirely. The most reliable way to find the right component is to filter by make, model and engine variant in our shop. We have mapped our products against precise vehicle data to ensure the part you order fits your car's CV joint. Always check that the tooth count of your old ring matches the replacement before fitting to avoid unnecessary extra work.
Related parts to inspect
Feel free to check these matching pages for the same vehicle when working on the ABS ring:
When one drivetrain component shows signs of wear, nearby parts on the same car often require inspection as well. Comparing these exact pages for the Volvo S40 2.0 T4 makes it easier to tell whether the issue lies with the ABS ring or another related part of the drivetrain.
This is particularly relevant on models where vibrations, play and noises can shift symptoms across several components in the driveline. A quick check of related categories reduces the risk of replacing the right type of part while overlooking a neighbouring component that contributes to the very same symptom.
By inspecting the assembly as a whole, you ensure a long-lasting repair and avoid having to strip down the same parts again shortly afterwards.
Why shop at CVJoint24
CVJoint24 is your dedicated partner when it comes to drivetrain and transmission components for Volvo. We are a Swedish driveline specialist who understands the technical demands of specific models such as the Volvo S40 2.0 T4. Our focus is on providing high-quality parts with a precise fit, backed by our fitment guarantee. With our broad inventory and deep category knowledge, you can be sure of finding the right part straight away. When you shop with us, you receive not just a spare part, but the reassurance that the component has been selected by specialists to withstand demanding driving conditions across European roads.
Frequently asked questions about ABS rings for Volvo S40 2.0 T4
How do I know whether my Volvo S40 2.0 T4 has 44 or 48 teeth on the ABS ring?
The most reliable method is to count the teeth on the existing ring, or select your exact model year and engine variant in our search selector to find the correct version.
Can I replace just the ABS ring, or do I need to replace the entire CV joint?
On the Volvo S40 2.0 T4, you can readily replace just the ring, provided the CV joint itself is in good working order and free from severe corrosion.
Why does the ABS ring crack on a Volvo S40?
This is usually caused by corrosion building up on the CV joint beneath the ring. The expanding rust creates outward pressure that eventually causes the steel ring to snap.
Will a cracked ABS ring cause an MOT or roadworthiness test failure?
Yes. If the ABS warning light is illuminated or the system fails to operate correctly, the car will fail its roadworthiness test.
Do I need special tools to fit a new ABS ring?
No, but the mounting surface on the CV joint must be thoroughly cleaned. The ring can then be gently tapped into place or heated slightly to ease installation.
What are the symptoms of a dirty ABS ring compared to a cracked one?
A dirty ring often results in a weak signal, whereas a cracked ring alters the gap between teeth, which typically causes unwanted ABS pulsation under braking at low speeds.