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Working on the cooling system > < Safety precautions

A4 Mk1

Working on the fuel system
Working on the fuel system
When working on the fuel system note the following warnings:
  WARNING
Risk of injury - fuel system operates under high pressure.
Wrap a clean cloth around the connection and carefully loosen the connection to release the fuel pressure.
Observe the following to prevent injuries to persons and damage to the injection and ignition system:
t  Always switch off the ignition before connecting or disconnecting electrical wiring for the injection or ignition system or tester cables.
t  Always switch off ignition before washing engine.
t  Faults are stored in engine control unit(s) if electrical connectors were unplugged and engine was started: “Generate readiness code” in “Guided Functions” → Vehicle diagnosis, testing and information system VAS 5051.
  Caution
To prevent damage to the electronic components when disconnecting the battery:
t  Observe notes on procedure for disconnecting the battery.
t  Always switch off the ignition before disconnecting the battery.
–  Disconnect battery → Rep. Gr.27.
   

Working on the cooling system > < Safety precautions