Splash Water Test As Per ISO 16750-4
Ensuring Product Durability: Splash Water Test as per ISO 16750-4
Introduction
- Automotive and electronic components often face exposure to water from sources like rain, road splashes, and high-pressure washing. To ensure their durability and reliability, manufacturers conduct Splash Water Testing as per ISO 16750-4. This standardized test evaluates how well components withstand water splashes in real-world conditions.

What is the Splash Water Test (ISO 16750-4)?
ISO 16750-4 is an international standard that defines environmental testing conditions for electrical and electronic equipment in road vehicles. The Splash Water Test within this standard assesses a component’s resistance to water impact, ensuring it can function reliably despite exposure to water.
Why is the Splash Water Test Important?
💧 Prevents Water Damage – Protects automotive and electronic components from corrosion and short circuits.
🚗 Ensures Road Safety – Helps ensure that electrical systems in vehicles remain functional under wet conditions.
⚙️ Enhances Product Lifespan – Reduces failure risks, increasing the durability of components.
🔍 Meets Industry Standards – Ensures compliance with global automotive regulations.
Testing Procedure for Splash Water Test
The Splash Water Test is conducted under controlled conditions to simulate real-world exposure. The testing process includes:
1. Test Setup
- The test sample is securely placed inside a splash water test chamber.
- Water is sprayed onto the component using specialized nozzles at a controlled pressure, volume, and temperature.
- The angle and intensity of the water impact are adjusted based on industry requirements.
2. Test Conditions
- Water Temperature: Cold (0°C to 4°C) or warm, depending on application requirements.
- Splash Cycles: Multiple cycles to simulate repeated water exposure.
- Test Duration: Several minutes per cycle, depending on industry specifications.
3. Post-Test Evaluation
Once the test is complete, the component is inspected for:
✅ Water ingress resistance
✅ Corrosion effects
✅ Electrical performance issues
✅ Material degradation
If the component passes the test, it demonstrates high durability and resistance to water splashes, making it reliable for real-world applications.
Industries That Use Splash Water Testing
The Splash Water Test is widely used in multiple industries, including:
🚘 Automotive – Testing sensors, control modules, connectors, and battery enclosures.
🔋 Electronics – Evaluating waterproof coatings, PCBs, and electrical housings.
🏗️ Industrial Equipment – Ensuring outdoor machinery can withstand wet conditions.
🚲 E-mobility – Verifying the water resistance of electric bikes, scooters, and charging stations.
Benefits of Splash Water Testing
✔ Prevents electrical failures caused by water ingress
✔ Reduces product recalls and warranty claims
✔ Ensures compliance with ISO 16750-4 standards
✔ Improves overall product quality and customer trust
Why Choose Kiyo R&D Lab for Splash Water Testing?
At Kiyo R&D Center & Laboratory, we provide ISO 16750-4-compliant Splash Water Testing using state-of-the-art facilities and expert analysis. Our testing solutions help manufacturers:
✅ Achieve industry certification
✅ Ensure product durability
✅ Enhance market competitiveness

Conclusion
- Water exposure is a critical challenge in automotive and electronic applications. The ISO 16750-4 Splash Water Test ensures components can withstand real-world conditions, improving durability and reliability.