how to troubleshoot the AdBlue system in BMW X3 G01 (2018-2024)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle's battery to ensure safety during repairs.
• Allow the engine to cool before beginning work.

2. Check and Refill AdBlue

• Locate the AdBlue tank; typically situated near the fuel filler neck.
• If the level is low, use a funnel to fill the tank with original BMW AdBlue solution to the recommended level.
• Ensure no spills occur during refilling.

3. Inspect AdBlue Injector

• Remove any components obstructing access to the AdBlue injector (e.g., engine cover).
• Disconnect the electrical connector from the AdBlue injector.
• Carefully remove the injector using the appropriate socket size.
• Clean the injector nozzle with a soft cloth and inspect for blockages; replace if necessary.

4. Check for Leaks

• Visually inspect the AdBlue lines and tank for any signs of leaks or cracks.
• If leaks are found, replace the damaged section of line or tank.

5. Reset the System

• Reconnect the battery and ensure all connections are secure.
• Use the OBD-II scanner to clear any error codes related to the AdBlue system.
• Start the engine and allow it to warm up to check for any persistent issues.