Product Details
Your W212 E-Class or C218 CLS-Class relies on a highly sophisticated Electronic Stability Program (ESP) to keep you safe in all driving conditions. The heart of this system is the ABS Wheel Speed Sensor. Located directly on the steering knuckle, this sensor continuously reads a magnetic reluctor ring integrated into the wheel bearing seal. It sends real-time rotational speed data to the ESP control module, which uses the information to instantly modulate anti-lock braking, traction control, stability control, and even adaptive cruise control.
Because this sensor lives directly behind the brake rotor, it is constantly exposed to extreme heat, corrosive road salt, metallic brake dust, and constant suspension movement. Over time, the internal wiring can chafe and break, or the internal Hall-effect measuring element can simply burn out, instantly disabling your vehicle's most critical safety systems.
Common Signs of a Failing ABS Wheel Speed Sensor:
A "Christmas Tree" Dashboard: A failed sensor will immediately trigger an array of warning messages, illuminating the ABS, ESP, and Traction Control lights simultaneously.
Loss of Driver Assists: Systems that rely on precise vehicle speed—such as Cruise Control, Distronic Plus, and Lane-Keep Assist—will automatically disable themselves.
Heavy Steering: Because the power steering system is speed-sensitive, a loss of wheel speed data often causes the steering to default to its heaviest, stiffest setting as a failsafe.
Transmission Limp Mode: In some cases, the transmission control module requires wheel speed data to shift properly; a failed sensor can cause delayed or harsh shifts.
ECS Tuning Recommends for W212/C218 Owners: CRITICAL FITMENT NOTE: This specific Genuine Mercedes-Benz sensor is designed exclusively for the Front Right (Passenger Side) on Rear-Wheel Drive (RWD) models only. It will not fit 4Matic (AWD) vehicles.
Tech Tip: Do not just throw a new sensor at the car without looking inside the mounting hole! The magnetic encoder ring is built into the back of the wheel bearing. In areas where road salt is used, rust can build up under the magnetic ring, causing it to swell, scrape against the sensor tip, and destroy the signal. If the magnetic ring is physically scraped or deteriorating, you must replace the wheel bearing, or your new sensor will not fix the ABS fault.
Essential Tools & Hardware for the Job
Replacing an ABS wheel speed sensor is a straightforward bolt-on job, but preparing the mounting surface and protecting the electrical connections is vital for a lasting repair. We highly recommend adding these items to your ECS Tuning cart:
Schwaben 100-Piece Specialty Bit Kit (ECS Part #: ES#2500878): The wheel speed sensor is secured to the knuckle with a small Torx or E-Torx fastener that is often heavily rusted. This comprehensive kit ensures you have the exact bit needed to extract it without stripping the head.
Schwaben Mini Wire Brush Set (ECS Part #: ES#3098522): You must clean the flat mounting surface on the aluminum steering knuckle before installing the new sensor. If rust or debris prevents the sensor from sitting perfectly flush, the air gap to the magnetic ring will be too large, and the sensor will not read properly.
CRC QD Electronic Cleaner (ECS Part #: ES#2804752): Spray out the vehicle-side wiring harness connector before plugging in your new sensor to ensure no moisture, dirt, or corrosion interferes with the sensitive micro-voltage signal.
This Part Fits the Following Vehicles
| Make | Model | Submodel | Engine | Year | Chasis | Special Fitment Notes |
|---|---|---|---|---|---|---|
| Mercedes Benz | CLS400 | Base | V6 3.0L | 2015 | 218.365 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS400 | Base | V6 3.0L | 2016 | 218.365 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS400 | Base | V6 3.0L | 2017 | 218.361 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS550 | Base | V8 4.6L | 2015 | 218.373 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS550 | Base | V8 4.6L | 2016 | 218.373 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS550 | Base | V8 4.6L | 2017 | 218.373 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS550 | Base | V8 4.6L | 2018 | 218.373 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS550 | Base | V8 4.6L 278.922 | 2012 | 218.373 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS550 | Base | V8 4.6L 278.922 | 2013 | 218.373 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS550 | Base | V8 4.6L 278.922 | 2014 | 218.373 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS63 AMG | Base | V8 5.5L 157.981 | 2012 | 218.374 | Use vehicle selector to confirm fitment |
| Mercedes Benz | CLS63 AMG | Base | V8 5.5L 157.981 | 2013 | 218.374 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E250 | Bluetec | I4 2.1L 651.924 | 2014 | 212.004 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E250 | Bluetec | L4 2.1L | 2015 | 212.004 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E250 | Bluetec | L4 2.1L | 2016 | 212.004 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | Base | V6 3.5L | 2015 | 212.059 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | Base | V6 3.5L | 2016 | 212.059 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | Base | V6 3.5L 272.980 | 2010 | 212.056 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | Base | V6 3.5L 272.980 | 2011 | 212.056 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | Base | V6 3.5L 272.988 | 2011 | 212.056 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | Base | V6 3.5L 276.952 | 2012 | 212.059 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | Base | V6 3.5L 276.952 | 2013 | 212.059 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | Base | V6 3.5L 276.952 | 2014 | 212.059 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | Bluetec | 642.850 | 2011 | 212.024 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | BlueTec (Diesel) | V6 3.0L 642.850 | 2012 | 212.024 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E350 | BlueTec (Diesel) | V6 3.0L 642.850 | 2013 | 212.024 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E400 | Base | V6 3.0L | 2015 | 212.065 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E400 | Base | V6 3.0L | 2016 | 212.065 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E550 | Base | V8 5.5L 273.966 | 2011 | 212.072 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E550 | Base | V8 5.5L 273.971 | 2010 | 212.072 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E550 | Base | V8 5.5L 273.971 | 2011 | 212.072 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E63 AMG | Base | V8 5.5L 157.981 | 2012 | 212.074 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E63 AMG | Base | V8 5.5L 157.981 | 2012 | 212.274 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E63 AMG | Base | V8 5.5L 157.981 | 2013 | 212.074 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E63 AMG | Base | V8 5.5L 157.981 | 2013 | 212.274 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E63 AMG | Base | V8 6.3L 156.985 | 2010 | 212.077 | Use vehicle selector to confirm fitment |
| Mercedes Benz | E63 AMG | Base | V8 6.3L 156.985 | 2011 | 212.077 | Use vehicle selector to confirm fitment |
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Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
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