Fuel System Safety Precautions
WARNING: This page is about a different car, the 2010 Audi A5, 2009 Audi A5, and 2008 Audi A5. However, it is still accessible from the selected car via links, so may be relevant.
Note The Following When Working On The Fuel System:
WARNING:
There Is A Risk Of Injury Because The Fuel Is Under Very High Pressure.
- Reduce the fuel pressure down to residual pressure before opening high pressure area of the fuel injection system.
- To reduce remaining residual pressure, place clean cloth around the connector and carefully loosen connector.
-- Procedures before opening high pressure fuel injection system. Refer to BEFORE OPENING HIGH PRESSURE FUEL INJECTION SYSTEM .
CAUTION:
- Always follow the instructions when disconnecting the battery. Refer to BATTERY .
- If the battery is >>Not << disconnected, then for safety reasons, the fuse located in fuse holder in the fuse panel in the instrument panel the driver side- must be removed from the Fuel Pump Control Module -J538- before opening the fuel system. Otherwise the driver door contact switch will activate the fuel pump.
- Individuals with a pacemaker must not stay in the danger area of high voltage systems, for example ignition systems, xenon light.
- Fuel lines must not be opened when engine is running.
- Only disconnect and reconnect wires for injection and ignition system, including test leads, when ignition is switched off.
- If engine is to be cranked at starting RPM without starting (e.g. for compression testing), disconnect connectors from ignition coils and remove fuse for electric fuel pump.
- It is possible that the control module will recognize a malfunction and store a DTC during some tests. After completing all checks and repairs, check the DTC memory and erase the memory, if necessary.
- Cleaning the engine should only be performed with ignition switched off.
- The Battery must only be disconnected and connected with the ignition switched off, since the Engine Control Module can otherwise be damaged.