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- LU Fill-Level Sensor / Urea Level
LU Fill-Level Sensor / Urea Level
The LU Fill-Level Sensor measures the urea (AdBlue) level in the tank and sends accurate readings to the ECU.
This sensor is engineered to withstand constant contact with AdBlue, temperature variations, and vibration, ensuring reliable and precise level detection. Its corrosion-resistant construction prevents damage from urea crystallization, while the integrated electronics provide stable signal output. By monitoring tank levels continuously, it helps prevent dry-running of the pump and supports overall SCR system reliability.
By providing accurate urea level data, the sensor enables timely refill alerts, prevents system faults, and maintains proper NOx reduction performance. It plays a crucial role in supporting emission compliance and ensuring uninterrupted SCR system operation in commercial diesel vehicles.
Key Features
- High-precision AdBlue/urea level sensor
- Corrosion- and crystallization-resistant design
- Provides accurate level readings for SCR control
- Supports emission compliance and system reliability
- Suitable for heavy-duty commercial diesel engines
Product Specifications
| GROUP | MODEL | REF. PART NUMBER | SPECIFICATIONS |
|---|---|---|---|
| 17.016 | 3128, 2523, 2528 | A4005421117 | LU Fill-Level Sensor – Urea Tank Level Unit |
Process Steps
- Remove tank access cover and disconnect wiring
- Carefully remove old level sensor
- Install new sensor securely in the tank
- Reconnect electrical connector
- Turn ignition on to verify level detection
- Run SCR diagnostics to ensure proper sensor calibration
FAQ
What does the LU Fill-Level Sensor do?
It measures the urea level in the tank and sends accurate data to the ECU for SCR management.
When should it be replaced?
When level readings become inaccurate, the warning light stays on, or crystallization damages the sensor.
