The 2019 Mercedes Sprinter AdBlue system is crucial for reducing emissions, but it can sometimes require a reset. This guide provides comprehensive instructions on performing a 2019 Mercedes Sprinter AdBlue reset, troubleshooting common issues, and understanding the importance of this system.
Understanding the AdBlue System in Your 2019 Sprinter
The AdBlue system, also known as Selective Catalytic Reduction (SCR), is designed to minimize harmful nitrogen oxide (NOx) emissions from your Sprinter’s diesel engine. AdBlue, a urea-based solution, is injected into the exhaust stream, converting NOx into harmless nitrogen and water vapor. A properly functioning AdBlue system is essential for meeting emission standards and ensuring optimal engine performance.
When is a 2019 Mercedes Sprinter AdBlue Reset Necessary?
A 2019 Mercedes Sprinter AdBlue reset might be necessary in several situations. These include after refilling the AdBlue tank, after certain repairs related to the SCR system, or if the system malfunctions and triggers a warning light. Ignoring these warnings can lead to reduced engine power or even prevent the engine from starting.
Common Reasons for an AdBlue Reset
- Low AdBlue Level: If the AdBlue level gets critically low, the system may require a reset after refilling.
- System Malfunction: Errors in the SCR system, such as sensor issues or faulty injectors, often necessitate a reset.
- Post-Repair Reset: After repairs to the AdBlue system components, a reset is usually required to clear error codes and ensure proper functionality.
How to Perform a 2019 Mercedes Sprinter AdBlue Reset
There are two primary methods for performing a 2019 Mercedes Sprinter AdBlue reset: using the vehicle’s onboard diagnostic system and utilizing specialized diagnostic software.
Method 1: Onboard Diagnostic System Reset
- Turn the ignition to the “on” position without starting the engine.
- Navigate through the vehicle’s menu using the steering wheel controls to find the “Assyst Plus” or “Service” menu.
- Select “AdBlue” and then choose the “Reset” option.
- Follow the on-screen prompts to complete the reset process.
Method 2: Diagnostic Software Reset
This method requires a compatible diagnostic scanner tool.
- Connect the diagnostic scanner to the vehicle’s OBD-II port.
- Turn the ignition to the “on” position.
- Select the “Mercedes-Benz” manufacturer and then choose the “Sprinter” model.
- Navigate to the “AdBlue” or “SCR” system menu.
- Select the “Reset” or “Clear Codes” function.
- Follow the software prompts to complete the reset.
“Regularly checking your AdBlue levels and addressing any warning lights promptly can prevent costly repairs down the road,” advises John Miller, a certified Mercedes-Benz technician with over 20 years of experience.
Troubleshooting AdBlue System Issues
If the reset doesn’t resolve the AdBlue warning light, further diagnostics might be necessary. Common issues include faulty sensors, injector problems, or issues with the AdBlue tank itself.
Common AdBlue System Problems and Solutions
- Faulty NOx Sensor: A malfunctioning NOx sensor can trigger incorrect readings, leading to unnecessary resets. Replacing the sensor is usually the solution.
- Clogged AdBlue Injector: A clogged injector prevents AdBlue from being properly injected into the exhaust stream. Cleaning or replacing the injector can resolve this issue.
- AdBlue Quality: Using low-quality or contaminated AdBlue can damage the system. Always use AdBlue that meets ISO 22241 standards.
Conclusion
Performing a 2019 Mercedes Sprinter AdBlue reset can often resolve warning lights and restore proper system functionality. Understanding the various reset methods and potential troubleshooting steps empowers Sprinter owners to maintain their vehicles effectively. Remember to consult a qualified technician for persistent issues or if you are unsure about performing the reset yourself. Addressing AdBlue system problems promptly ensures optimal engine performance, reduces emissions, and helps avoid costly repairs.
FAQ
- How often should I check my AdBlue level? It’s recommended to check your AdBlue level every time you refuel.
- Can I drive my Sprinter with a low AdBlue level? While you can drive for a limited distance with a low AdBlue level, the engine power may be reduced, and eventually, the engine may not start.
- Where can I purchase AdBlue? AdBlue is available at most gas stations, auto parts stores, and Mercedes-Benz dealerships.
- What happens if I accidentally put diesel fuel in the AdBlue tank? Do not start the engine. Contact a qualified technician to drain and clean the AdBlue system.
- Is it safe to perform an AdBlue reset myself? If you follow the instructions carefully, performing a reset is generally safe. However, if you’re unsure, consult a professional.
- How much does an AdBlue reset cost at a dealership? The cost can vary, but it’s typically less expensive than repairing a neglected AdBlue system.
- What does the AdBlue warning light look like? The AdBlue warning light is typically a blue or yellow symbol resembling a gas pump with a droplet.
