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HOMESERVICE MANUALSAUDI2009A6 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 17 (4.2L - FUEL INJECTION AND IGNITION, ENGINE CODE(S): BHF)28 IGNITION/GLOW PLUG SYSTEMIGNITION SYSTEM, CHECKINGSAFETY PRECAUTIONS
2009 Audi A6 Base

Safety precautions

2009 Audi A6 BaseSECTION Safety precautions
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 Audi S4, 2008 Audi S4, 2007 Audi S4, 2006 Audi S4, and 2005 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.

To prevent injuries to persons and/or damage to the fuel injection and ignition system, the following must be noted:

  • Do not touch or disconnect ignition cables when the engine is running or at starter speed.
  • Always switch off the ignition before connecting or disconnecting the battery, otherwise the engine control module may be damaged.
  • Always switch off the ignition before connecting or disconnecting injection or ignition system wiring or tester cables.
  • To run engine at starting speed without actually starting it (for example, in order to test compression), unplug connector from the output stages of the ignition coils and also the connectors on the injectors. After completing the work, check the DTC memory and erase it.
  • Always switch off the ignition before washing the engine.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.