Safety Precautions
WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
- Fuel system is under pressure! Before opening system, place rags around the connection area. Then release pressure by carefully loosening the connection.
- Vehicles with FSI engine: The engine section of the fuel system, after the high pressure pump, is under extremely high pressure! When working on engine or fuel injection system, pressure must be relieved to residual pressure before opening high pressure components. Refer to 24 MULTIPORT FUEL INJECTION (MFI) .
Perform the following steps before beginning work on the Fuel system:
- Disconnect the battery Ground (GND) cable with the ignition switched off.
- Open the fuel filler flap briefly and then close again.
When removing and installing components from full or partially full fuel tanks, observe the following:
- The fuel tank must only be partially full. How much fuel can remain in the fuel tank may be read in the respective work description. Empty the fuel tank if necessary.
- Before starting work, switch on the exhaust extraction system and place an extraction hose close to the installation opening of the fuel tank to extract escaping fuel fumes. If no exhaust extraction system is available, a radial fan (as long as motor is not in air flow) with a displacement greater than 15 m 3 /h can be used.
- Prevent fuel from contacting the skin! Wear fuel-resistant gloves!