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Home >> Audi >> 2007 >> RS 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 50 (Engine Mechanical - 4.2L V8 - Art, Awn, BBD) >> Engine Assembly >> Engine, removing and installing >> Notes

Engine, removing and installing: Notes

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CAUTION: Before beginning repairs on the electrical system:
  • Obtain the anti-theft radio security code.
  • Switch the ignition off.
  • Disconnect the battery Ground (GND) strap.
  • On vehicles equipped with Audi Telematics by OnStar®, switch-off the emergency (back-up) battery for the Telematic/Telephone Control Module prior to disconnecting vehicle battery. See EMERGENCY BATTERY, SWITCHING OFF/ON .
  • After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock and power windows according to Repair Manual and/or Owner's Manual.
  • After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar®, switch-on the emergency (back-up) battery for the Telematic/Telephone Control Module. See EMERGENCY BATTERY, SWITCHING OFF/ON .
WARNING: The ignition must be switched OFF when:
  • Disconnecting ignition wires.
  • Disconnecting fuel injection system wiring.
  • Connecting or disconnecting test equipment leads.
  • Disconnecting battery.
  • Washing the engine or engine compartment
CAUTION: Whenever working on fuel supply or fuel injection systems, always observe the following rules of cleanliness:
  • Thoroughly clean fuel supply lines and hose connections and the surrounding area before disconnecting.
  • Place removed components on a clean surface and cover. Use plastic sheeting or paper. Do not use fluffy rags that could leave lint.
  • Install only clean components. Do not remove replacement parts from the packaging until immediately before installing them. Do not use parts that have been stored without packaging (for example in tool boxes, etc.)
  • Avoid working with compressed air when the fuel system is open.
  • Replace all tie wraps that were cut and install them in the same location from where they were removed.
CAUTION: A/C refrigerant circuit must only be opened by specially trained technicians using proper tools and equipment.
  • DO NOT open air conditioning refrigerant circuit.
  • Disconnect A/C refrigerant line brackets and support points only.
  • Set A/C compressor carefully aside. Avoid damage from bending lines or kinking hoses. Refrigerant lines kink easily.
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