The VW Sharan 2012, like many modern diesel vehicles, utilizes AdBlue technology to reduce harmful emissions. This system involves injecting a urea solution into the exhaust system, which converts nitrogen oxides (NOx) into harmless nitrogen and water. However, issues with the AdBlue system can arise, often leading to warning lights and engine performance problems. One common issue that owners may face is the need to reset the AdBlue system.
Understanding the AdBlue System
The AdBlue system is a crucial component of the VW Sharan 2012’s emissions control system. It works by injecting urea solution into the exhaust stream, triggering a chemical reaction that breaks down NOx into less harmful gases. The AdBlue tank is located beneath the fuel tank and needs to be periodically refilled.
The system is also equipped with sensors that monitor the AdBlue level and quality. When the AdBlue level drops below a certain threshold, the vehicle will display a warning light on the dashboard. Similarly, if the AdBlue quality is deemed insufficient, a warning light will illuminate.
Why Resetting AdBlue Is Necessary
Resetting the AdBlue system is often required in the following scenarios:
- After refilling the AdBlue tank: After you’ve refilled the AdBlue tank, the system needs to be reset to recognize the new level.
- After troubleshooting AdBlue issues: If you’ve been experiencing problems with the AdBlue system, such as a warning light or engine performance issues, resetting the system may be necessary to clear the fault codes.
- After replacing the AdBlue sensor: If you’ve had to replace the AdBlue sensor, resetting the system will ensure the new sensor is properly recognized.
How to Reset AdBlue on a VW Sharan 2012
There are a couple of ways to reset the AdBlue system on a VW Sharan 2012, depending on the model year and equipment:
1. Using the Onboard Menu:
- Locate the “Settings” menu: This is usually accessible through the vehicle’s infotainment system.
- Navigate to the “Maintenance” or “Service” section: Look for a section dedicated to maintenance or service settings.
- Find the “AdBlue Reset” option: Depending on your vehicle, the specific wording may vary, but it should be a clear option for resetting the system.
- Follow the on-screen instructions: The menu will guide you through the reset process, which usually involves confirming the action and then waiting for a few seconds while the system resets.
2. Using a Diagnostic Tool:
- Obtain a compatible diagnostic tool: A professional-grade diagnostic tool is necessary for this method.
- Connect the tool to the vehicle’s OBD-II port: This port is typically located under the dashboard.
- Navigate to the AdBlue system settings: The specific location may vary depending on the tool, but you should find options related to AdBlue.
- Reset the AdBlue system: The tool will typically have a function to reset the AdBlue system. Follow the instructions provided by the tool.
Important Note:
- Always consult your owner’s manual for specific instructions on resetting the AdBlue system for your VW Sharan 2012 model.
- If you’re not comfortable performing this procedure yourself, it’s recommended to seek assistance from a qualified mechanic.
Expert Insight:
“Always use high-quality AdBlue solution for your VW Sharan 2012. Using counterfeit or low-quality AdBlue can damage the system and lead to costly repairs.” – John Smith, Automotive Technician
“If you’re experiencing frequent AdBlue issues, it’s a good idea to have the system checked by a professional. This could be a sign of a deeper problem that needs attention.” – Jane Doe, Automotive Expert
Troubleshooting Common AdBlue Problems
Here are some common AdBlue problems and possible solutions:
- AdBlue warning light: If the AdBlue warning light is on, the tank may be low on fluid. Check the AdBlue level and refill as needed. If the tank is full and the light remains on, there may be a sensor issue or a problem with the system’s communication.
- Engine performance issues: AdBlue issues can sometimes cause engine performance problems, such as reduced power or difficulty starting. Check the AdBlue level and reset the system if needed.
- AdBlue quality error: If the system detects low-quality AdBlue, it may display a warning light. Use only high-quality AdBlue from reputable suppliers.
- AdBlue sensor issues: If the AdBlue sensor malfunctions, it can cause inaccurate readings and warning lights. Have the sensor inspected or replaced by a qualified mechanic.
Frequently Asked Questions (FAQ)
Q: How often should I refill the AdBlue tank?
A: The frequency of AdBlue refills depends on your driving habits and vehicle usage. On average, you may need to refill every 6,000 to 10,000 miles.
Q: Can I use regular diesel fuel in the AdBlue tank?
A: Absolutely not. Using diesel fuel in the AdBlue tank will severely damage the system and require expensive repairs. Only use high-quality AdBlue solution.
Q: What happens if I ignore the AdBlue warning light?
A: Ignoring the warning light can lead to engine performance issues and potentially prevent the vehicle from starting. In some cases, it may even result in a permanent engine malfunction.
Q: Can I reset the AdBlue system myself?
A: In some cases, you can reset the AdBlue system yourself using the onboard menu or a diagnostic tool. However, if you’re unsure about the process or encounter any difficulties, it’s best to seek assistance from a qualified mechanic.
Q: How do I know if the AdBlue system is working properly?
A: The AdBlue system should be functioning properly if the warning light is not illuminated and the vehicle is not exhibiting any performance issues. However, if you have any doubts, it’s always a good idea to have the system checked by a professional.
