my BMW 5 Series F10/F11 (2010-2017) has a fuel smell inside the cabin what can cause this

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery to prevent electrical hazards.

2. Inspect Fuel Lines and Connections

• Remove any covers as necessary to access the fuel lines.
• Check all fuel line connections for tightness and integrity.
• If leaks are found, replace the damaged sections of fuel line.
• Tools Required: Socket set, wrench set.

3. Replace Faulty Components

• If the fuel injectors or their seals are found to be leaking:
  • Remove the intake manifold if necessary to access the fuel injectors.
  • Disconnect the fuel lines from the injectors.
  • Replace the seals and/or injectors as needed.
  • Reconnect everything in reverse order.
• Tools Required: Torque wrench, injector puller (if necessary).

4. Check and Replace Cabin Air Filter

• Locate the cabin air filter housing, usually behind the glove box.
• Remove the old cabin air filter and inspect for fuel odors or residues.
• Replace with a new filter if contaminated.
• Tools Required: Screwdriver (if applicable).

5. Reassemble and Test

• Reconnect the battery.
• Perform a visual check to ensure all components are securely reattached.
• Start the engine and observe for any fuel leaks.
• Tools Required: N/A.