Metzger 0900102 Sensor, wheel speed

Metzger 0900102 Sensor

The Metzger 0900102 Sensor is a high‑precision wheel speed sensor designed for the front axle of Mercedes-Benz vehicles, including the CLS Coupe and E‑Class models. It plays a crucial role in the vehicle’s Anti‑Lock Braking System (ABS) by accurately measuring wheel rotation speed and transmitting this data to the ABS control module.

Key Technical Specifications

• Model: 0900102
• Type: Hall‑effect wheel speed sensor
• Operating Voltage: 12 V DC
• Signal Output: Pulse frequency proportional to wheel speed
• Temperature Range: –40 °C to +85 °C
• Mounting Position: Front axle, left and right wheels
• Compatibility: Mercedes-Benz CLS Coupe, E‑Class Sedan, E‑Class Break, and related chassis codes (e.g., 2115401817, 2115402917, 2115401317)

Functional Role in ABS

The sensor continuously monitors the rotational speed of each wheel. By converting mechanical rotation into electrical pulses, it allows the ABS control unit to detect sudden deceleration or loss of traction. When a wheel is about to lock, the ABS system modulates brake pressure based on the pulse frequency received from this sensor, ensuring optimal braking performance and vehicle stability.

Installation Guidelines

1. Preparation: Disconnect the battery and remove the wheel cover or hub assembly to access the existing sensor.
2. Removal: Unscrew the old sensor using a suitable socket. Carefully detach the wiring harness, noting the polarity and connector type.
3. Installation: Align the new Metzger 0900102 sensor with the mounting bracket. Secure it with the provided fasteners, ensuring no play or misalignment.
4. Connection: Reconnect the wiring harness, verifying correct orientation to avoid signal loss.
5. Testing: After reassembly, start the vehicle and check the ABS warning light. A steady illumination indicates proper sensor operation; a flashing or persistent light suggests a fault that requires further inspection.

Performance Highlights

• High Accuracy: Delivers precise wheel speed data even under extreme temperature variations.
• Reliability: Built with durable materials to withstand vibration, moisture, and road debris.
• Low Power Consumption: Operates efficiently within the vehicle’s electrical system.
• Seamless Integration: Designed to match the original equipment specifications of Mercedes-Benz models.

Maintenance Tips

Regular inspection of the sensor and its wiring is recommended, especially after exposure to harsh road conditions. Look for signs of corrosion, loose connections, or physical damage. Clean the sensor housing with a dry cloth; avoid using abrasive materials that could scratch the surface.

Compatibility Summary

The Metzger 0900102 Sensor is specifically engineered for:

• Mercedes-Benz CLS Coupe (front axle)
• Mercedes-Benz E‑Class Sedan and Break (front axle)
• Chassis codes: 2115401817, 2115402917, 2115401317

Its design ensures that the sensor’s electrical characteristics match those of the vehicle’s ABS system, providing reliable performance across all supported models.

Conclusion

The Metzger 0900102 Sensor exemplifies precision engineering tailored for Mercedes-Benz front‑axle wheel speed detection. Its robust construction, accurate signal output, and seamless compatibility make it an essential component for maintaining optimal ABS functionality and vehicle safety.