Vemo V38-72-0012 Sender Unit, coolant temperature
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Vemo V38-72-0012 Sender Unit: Engine Coolant Temperature Sensor
The Vemo V38-72-0012 Sender Unit is a precision-engineered component designed to monitor the temperature of engine coolant in automotive applications. This sensor plays a critical role in maintaining optimal operating conditions, ensuring efficient combustion, and protecting the engine from overheating.
Key Functionalities
- Accurate Temperature Measurement: Provides real-time data on coolant temperature with high precision, enabling the vehicle’s control unit to adjust fuel injection, ignition timing, and cooling system operation.
- Wide Operating Range: Capable of measuring temperatures from -40 °C to +120 °C, suitable for a variety of climates and engine loads.
- Robust Construction: Encased in a durable housing that resists vibration, corrosion, and thermal shock, ensuring long-term reliability.
- Low Power Consumption: Designed to draw minimal current from the vehicle’s electrical system, preserving battery life and reducing heat generation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | V38-72-0012 |
| Sensor Type | Thermistor (NTC) |
| Operating Temperature Range | -40 °C to +120 °C |
| Resistance at 25 °C | 10 kΩ (typical) |
| Accuracy | ±1.5 °C |
| Response Time | ≤2 seconds |
| Connector Type | Standard automotive 3‑pin plug (or equivalent) |
| Dimensions | Length: 35 mm, Diameter: 12 mm |
| Weight | ≈15 g |
| Material | High‑temperature plastic housing; ceramic sensor element |
Compatibility and Applications
The Vemo V38-72-0012 is engineered to fit a broad spectrum of vehicles, particularly those from major manufacturers such as Nissan, Renault, Opel, Dacia, and others. Its universal design allows it to replace original equipment (OE) sensors in models including:
- Nissan Micra IV K13
- Renault Clio 3
- Renault Megane 3 & Megane 3 Coupe
- Dacia Dokker, Duster, Lodgy
- Various Nissan models (e.g., Micra, Qashqai)
- Other OEMs that use the V38-72-0012 specification
Its compact size and low profile make it suitable for tight engine bay spaces where traditional sensors may not fit.
Installation Guide
- Disconnect Battery: For safety, remove the negative battery terminal before working on electrical components.
- Locate Existing Sensor: Identify the current coolant temperature sensor in the engine block or cylinder head. It is typically mounted near the thermostat housing.
- Remove Old Sensor: Use a suitable socket or wrench to unscrew the old sensor. Carefully detach the electrical connector, noting its orientation.
- Install Vemo Sensor: Align the new V38-72-0012 with the mounting hole and torque it to the manufacturer’s specified value (usually 10–12 Nm). Reconnect the electrical plug, ensuring a snug fit.
- Reconnect Battery: Restore the negative terminal and verify that the vehicle’s dashboard displays normal coolant temperature readings.
Performance Benefits
- Enhanced Engine Protection: By accurately reporting coolant temperature, the sensor helps prevent overheating, reducing wear on pistons, valves, and head gaskets.
- Improved Fuel Efficiency: Precise temperature data allows the engine control unit to optimize fuel-air mixtures, leading to better combustion efficiency.
- Reduced Emissions: Proper temperature management contributes to lower exhaust emissions by maintaining optimal operating temperatures.
- Reliability Under Extreme Conditions: The sensor’s robust construction ensures consistent performance in high‑heat environments and during rapid temperature changes.
Maintenance Tips
While the Vemo V38-72-0012 is designed for long life, regular checks can extend its service interval:
- Inspect the sensor connector for corrosion or loose contacts during routine maintenance.
- Verify coolant level and quality; contaminated coolant can affect sensor readings.
- Check for any visible damage to the housing that might compromise sealing integrity.
Quality Assurance and Compliance
The Vemo V38-72-0012 adheres to stringent automotive standards, including ISO/TS 16949 and relevant regional safety regulations. Its manufacturing process incorporates:
- Precision machining of sensor elements for consistent resistance characteristics.
- Thermal testing across the full operating range to validate accuracy.
- Electrical insulation verification to prevent signal interference.
Conclusion
The Vemo V38-72-0012 Sender Unit stands out as a reliable, high‑performance coolant temperature sensor suitable for a wide array of vehicles. Its accurate readings, durable construction, and ease of installation make it an essential component for maintaining engine health, optimizing performance, and ensuring compliance with modern automotive standards.
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 16.90 EUR |
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| Identifiers | |
| Brand |  Vemo is a brand that specializes in making watches. They make a wide variety of watches, from sporty to dressy, and everything in between. Their watches are known for their high quality and stylish designs. |
| Model | Vemo V38-72-0012 |
| MPN | Vemo V38-72-0012 |
| ID | 8905455 |
| Dimensions / Weight | |
| Key Features | |
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