Vemo V30-72-0172 Sensor, wheel speed

Vemo V30-72-0172 Sensor – Wheel Speed

The Vemo V30-72-0172 Sensor is a high‑performance wheel speed sensor designed for the rear axle of Mercedes‑Benz vehicles, including the E‑Class (W211, S211), CLS, C219, and related models. It plays a critical role in the vehicle’s Anti‑Lock Braking System (ABS) and Electronic Stability Program (ESP), providing precise rotational data that enables safe braking and stability control.

Key Functionalities

• Accurate Wheel Speed Measurement: Delivers reliable speed data to the ABS/ESP modules, ensuring optimal brake modulation during emergency stops.
• High Signal Integrity: Features a robust magnetic pickup that generates clean pulses even under harsh operating conditions such as high temperatures and vibration.
• Long‑Term Durability: Constructed with corrosion‑resistant materials to withstand road salts, moisture, and mechanical wear over extended service life.
• Easy Integration: Compatible with OEM wiring harnesses and connector types used on Mercedes‑Benz rear axles, facilitating straightforward replacement without the need for additional adapters.

Technical Specifications

Installation Overview

1. Remove the Old Sensor: Disconnect the battery, remove the wheel and brake assembly, then unscrew the existing sensor from the hub.
2. Prepare the New Sensor: Verify that the connector matches the vehicle’s wiring harness. If necessary, trim or adapt the cable to fit.
3. Mount the Sensor: Align the new sensor with the mounting flange on the wheel hub and secure it using the supplied bolts.
4. Reconnect Wiring: Attach the sensor connector to the vehicle’s harness, ensuring a firm connection.
5. Test Functionality: Reinstall the brake components, wheel, and battery. Start the engine and check for proper ABS/ESP operation using diagnostic tools or by observing the ABS light behavior during braking.

Performance Benefits

• Enhanced Safety: By providing accurate wheel speed data, the sensor enables the ABS to modulate brake pressure effectively, preventing wheel lock‑up and maintaining steering control.
• Improved Reliability: The durable construction reduces the likelihood of sensor failure, which can lead to costly repairs or safety risks.
• Consistent Calibration: OEM compatibility ensures that the sensor’s output aligns with the vehicle’s electronic control unit (ECU) expectations, eliminating calibration issues.

Maintenance Tips

• Inspect the sensor housing for cracks or corrosion periodically; replace if any damage is detected.
• Check connector pins for bent or oxidized contacts; clean with a contact cleaner and ensure proper seating.
• Avoid exposing the sensor to excessive moisture by ensuring that wheel seals remain intact during maintenance.

Why Choose Vemo?

The Vemo V30-72-0172 Sensor is manufactured with stringent quality controls and adheres to OEM specifications. Its proven track record in Mercedes‑Benz applications makes it a trusted choice for technicians and vehicle owners seeking reliable performance without compromising safety.

Conclusion

The Vemo V30-72-0172 Wheel Speed Sensor delivers precise, durable, and OEM‑grade functionality essential for the ABS and ESP systems of Mercedes‑Benz rear axles. Its robust design, straightforward installation, and compatibility with a wide range of models make it an indispensable component for maintaining vehicle safety and performance.