Safety precautions when working on fuel tank

WARNING: This page is about a different car, the 1999 Audi A8, 1998 Audi A8, and 1997 Audi A8. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: When removing and installing the fuel pump or fuel level sensor from a filled or partially filled fuel tank:

Fuel tank must be no more than 2/3 full. Remove fuel if necessary using an approved fuel cart.
BEFORE beginning repairs, the suction pipe of an exhaust extraction system must be located near the fuel tank opening so that escaping fuel vapors can be immediately carried away.
If no exhaust extraction system is available, a radial fan (motor located outside the air flow) with volume of at least 15 m³ /hr (9 cfm) may be used.
Wear fuel-resistant gloves whenever working with open parts of the fuel system.
Be sure the ignition is switched OFF, when:
- Disconnecting fuel system wiring.
- Connecting or disconnecting test equipment leads.
BEFORE cranking the engine at starting RPM (such as for compression testing) disable the ignition and fuel injection systems:
- Disconnect the ignition coil power output stage.
- Disconnect harness connectors from all fuel injectors.
- After the work is completed, erase Diagnostic Trouble Code (DTC) memory.