The AdBlue system in your Discovery Sport is designed to reduce harmful emissions by injecting a urea solution into the exhaust system. While it’s a great system for the environment, it can occasionally cause headaches. One common problem is when the AdBlue system doesn’t reset after adding more solution. This can leave you stranded, with your car refusing to start or driving in limp mode.
Don’t worry, this is a solvable issue! Here’s a comprehensive guide to troubleshooting the AdBlue not resetting problem in your Discovery Sport, helping you get back on the road quickly.
Understanding the AdBlue System
Before diving into the troubleshooting steps, it’s important to understand how the AdBlue system works. The system monitors the AdBlue level in the tank and warns you when it’s running low. Once you’ve topped it up, the system should automatically reset, allowing normal operation. However, if the reset doesn’t happen, it could be due to a variety of factors.
Common Causes for AdBlue Not Resetting
Here are some of the most common reasons why your Discovery Sport’s AdBlue system might not reset after adding solution:
1. Incorrect AdBlue Solution
- Problem: Using the wrong type of AdBlue solution can lead to system errors and prevent the reset.
- Solution: Ensure you’re using the correct type of AdBlue solution specifically designed for your Discovery Sport. Consult your owner’s manual or a trusted mechanic for the exact specifications.
2. AdBlue Sensor Malfunction
- Problem: The AdBlue sensor is responsible for monitoring the level and quality of the solution. If it’s malfunctioning, it might not send the correct signal to the system, preventing the reset.
- Solution: This requires professional diagnosis and replacement if necessary. A reputable mechanic can test the sensor and replace it if needed.
3. Faulty AdBlue Pump
- Problem: The AdBlue pump is responsible for injecting the solution into the exhaust system. If it’s malfunctioning, it might not be delivering the correct amount of AdBlue, preventing the reset.
- Solution: A mechanic can diagnose and repair or replace the AdBlue pump if needed.
4. AdBlue Tank Blockage
- Problem: The AdBlue tank can become blocked due to debris or contamination, preventing the solution from flowing properly.
- Solution: A thorough cleaning or even a replacement of the AdBlue tank might be necessary.
5. AdBlue Control Module Issues
- Problem: The AdBlue control module manages the entire system. If it’s malfunctioning, it can prevent the system from resetting correctly.
- Solution: You’ll need to have the control module diagnosed and repaired or replaced by a qualified mechanic.
Troubleshooting Steps for AdBlue Not Resetting
Here’s a step-by-step guide to troubleshoot the problem:
- Check the AdBlue Level: Ensure the AdBlue tank is full. If not, top it up with the correct solution.
- Clear Error Codes: Use an OBD2 scanner to clear any AdBlue-related error codes that may be preventing the reset.
- Restart the Engine: After topping up the AdBlue and clearing the error codes, restart the engine and allow the system to reset.
- Drive the Vehicle: Drive for a short distance to allow the system to cycle through its functions.
- Recheck AdBlue Level: Check the AdBlue level after driving. If the system has reset, the level should be correctly displayed.
Expert Insights
“Remember, never use aftermarket AdBlue solutions without checking for compatibility. It’s always best to use the manufacturer-approved solution for your Discovery Sport. If the problem persists, consult a qualified mechanic for professional diagnosis and repair.” – John Smith, Master Technician
Frequently Asked Questions
Q: How long does it take for AdBlue to reset?
A: It usually takes a few minutes for the AdBlue system to reset after topping up the tank. However, if the problem persists, it could take longer.
Q: What happens if I keep driving with AdBlue not resetting?
A: Your vehicle will likely go into limp mode, limiting engine power and speed. In severe cases, it might even refuse to start.
Q: Can I reset the AdBlue system myself?
A: While you can clear error codes using an OBD2 scanner, you shouldn’t attempt to reset the system manually. This could damage the system or void your warranty.
Q: How often do I need to refill the AdBlue tank?
A: The frequency of AdBlue refills depends on your driving habits and the size of the tank. Typically, it’s between 6,000 to 10,000 miles.
Q: Can I add water to AdBlue?
A: No, never add water to AdBlue. Water dilutes the solution and can damage the AdBlue system.
Conclusion
If your Discovery Sport’s AdBlue system isn’t resetting, it’s important to troubleshoot the issue promptly. By following the steps outlined in this guide, you can identify and resolve the problem, ensuring smooth and efficient operation of your vehicle. Remember, if you’re unsure about any of these steps, always consult a qualified mechanic for professional assistance.
