Guide to Replacing the ABS Wheel Speed Sensor on a 2013-2016 Audi allroad
Diagnose common ABS sensor problems and choose the right aftermarket part for your B8.5 allroad.
- A dashboard with ABS, ESC, and parking brake lights is the most common sign of failure.
- You must use a proper scan tool to identify which of the four sensors has failed before ordering a replacement.
- For best results, choose an OEM supplier brand like Bosch or Hella for aftermarket replacement.
- The sensors are often side-specific (left vs. right); verify the part number for your vehicle's needs.
Understanding ABS Wheel Speed Sensor Failure
A failing ABS wheel speed sensor on your 2013-2016 Audi allroad will almost always trigger a collection of warning lights on your dashboard. Because the sensor's data is shared across multiple systems, a single bad sensor can make it seem like many things are wrong at once. The most common signs are the ABS, Electronic Stability Control (ESC), and sometimes the parking brake warning lights illuminating. You may also notice that cruise control stops working. These sensors live in a harsh environment behind the wheels, exposed to heat, water, and road debris, which is why failure is a common issue.
Important First Step: Diagnosis
Before buying any parts, you must scan your vehicle with an OBD-II scanner that can read Audi-specific ABS codes. A basic code reader may not work. A proper scan will tell you exactly which wheel sensor has failed (e.g., "Left Front Wheel Speed Sensor Circuit Malfunction"). Guessing can lead to replacing the wrong part and wasting money, as the symptoms are the same regardless of which of the four sensors has failed.
Choosing the Right Aftermarket ABS Sensor
When replacing this part, you don't have to buy the expensive Genuine Audi part to get good quality. Many aftermarket brands offer excellent performance, but quality can vary. They can be grouped into tiers:
- Tier 1: OEM Suppliers (Bosch, Hella): Bosch and Hella are often the original equipment manufacturers for Audi. Choosing one of these brands is the safest bet for aftermarket parts, as they are typically identical to the part sold at the dealership, just in a different box. They offer the best fit, performance, and longevity.
- Tier 2: Reputable Aftermarket (Delphi, Standard Ignition): Brands like Delphi and Standard Motor Products (Standard Ignition) have a solid reputation for producing reliable electronic parts that meet or exceed OEM specifications. They are a great middle-ground option, offering good quality at a slightly lower price than OEM suppliers.
- Tier 3: Budget-Focused (URO Parts, Facet, Vemo): These brands provide a low-cost alternative. While they can work, forum discussions suggest that fit and longevity can be inconsistent. Vemo is often noted as a specialist for European cars, but overall, these brands are best suited for those on a tight budget who are willing to accept the risk of a shorter part lifespan.
Pro Tip: The ABS sensors for the 2013-2016 allroad are often side-specific (left vs. right) but can sometimes be used on either the front or back axle. Always double-check the part number (e.g., WHT003856) and fitment details for the specific wheel you are replacing.
Known Issues, TSBs, and Recalls
While there are no specific recalls for the ABS wheel speed sensors on the 2013-2016 allroad, Audi has issued a Technical Service Bulletin (TSB 2072304) that applies to these vehicles. It notes that dirt, grease, or other debris on the sensor or the magnetic ring on the wheel bearing can cause an "implausible signal," leading to ABS/ESC warning lights. Before replacing the sensor, it's worth inspecting and cleaning the sensor and surrounding area. Other recalls for this vehicle generation exist for issues with airbags and coolant pumps, but not the ABS sensors themselves.
Cost to Replace an ABS Wheel Speed Sensor
| Part Type | Typical Cost |
|---|---|
| New OEM (Dealer) | $110 - $160 |
| New Aftermarket | $28.86 - $94.32 |
| Shop Labor | $120 - $180 |
Frequently Asked Questions (FAQ)
Do I need to replace all four ABS sensors at once?
No. You only need to replace the specific sensor that has failed. A proper diagnostic scan will identify the faulty sensor, and you should only replace that one.
How do I know which ABS sensor is bad?
You must use an OBD-II scanner capable of reading ABS/chassis codes from your Audi. The scanner will provide a specific code (like C0040 for the right front wheel) that points to the exact sensor that needs replacement.
Is the front sensor the same as the rear sensor?
Sometimes, but not always. For this Audi allroad, the sensors are typically designated for the left or right side of the car, but the same part number may fit both the front and rear on that side. For example, part number WHT003856 is often used for the rear axle. Always verify the part number for your specific location before ordering.
Can a bad ABS sensor cause other problems?
Yes. Because the wheel speed data is used by many systems, a bad sensor can cause the traction control, stability control, hill-hold assist, and cruise control to stop working. In some cases, it can even lead to erratic transmission shifting if the car's computer gets confusing speed data.
Technical Specifications
OEM Part Numbers: WHT003856 WHT003856C 4E0927803F 4E0927804F
The sensors for the 2013-2016 Audi allroad are typically Hall effect sensors with a 2-pin connector. They are often side-specific (left vs. right) but may be interchangeable between the front and rear axles on the same side.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Audi allroad: