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Home >> Audi >> 2021 >> S5 Premium Plus, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 493 (Ignition/Glow Plug System (Servicing - 8-Cylinder 4.0L 4V TFSI Engine Ea825)) >> 28 Ignition/Glow Plug System >> Ignition System >> Overview - Ignition System

Overview - Ignition System

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Fig 1: Overview - Ignition System
GWWA28-10185Courtesy of AUDI OF AMERICA, LLC
  1. O-Ring
    • Replace if damaged or leaking
  2. Camshaft Position Sensor 3 -G300-
  3. Bolt
    • 9 Nm
  4. Bolt
    • 23 Nm
    • Tightening specifications affect the function of the knock sensor
  5. Knock Sensor 1 -G61-
  6. Bolt
    • 23 Nm
    • Tightening specifications affect the function of the knock sensor
  7. Knock Sensor 2 -G66-
  8. O-Ring
    • Replace if damaged or leaking
  9. Camshaft Position Sensor -G40-
  10. Bolt
    • 9 Nm
  11. Spark Plug
    • Replacement interval. Refer to the appropriate Maintenance Tables.
    • Tightening specification. Refer to SPARK PLUGS, REPLACING
  12. Spark Plug Connectors
  13. Ignition Coil
    • Ignition Coil 1 with Power Output Stage -N70-
    • Ignition Coil 2 with Power Output Stage -N127-
    • Ignition Coil 3 with Power Output Stage -N291-
    • Ignition Coil 4 with Power Output Stage -N292-
    • Ignition Coil 5 with Power Output Stage -N323-
    • Ignition Coil 6 with Power Output Stage -N324-
    • Ignition Coil 7 -N325-
    • Ignition Coil 8 -N326-
  14. Bolt
    • 9 Nm
  15. O-Ring
    • Replace if damaged or leaking
  16. O-Ring
    • Replace if damaged or leaking
  17. Engine Speed Sensor -G28-
    • Removing and Installing. Refer to Engine Speed Sensor -G28-, REMOVING AND INSTALLING .
    • After replacing perform the listed adaptation in the 0001 - Engine Electronics Functions "0001 - Steps after replacing components" using the Vehicle Diagnostic Tester.
  18. Bolt
    • 9 Nm
  19. O-Ring
    • Replace if damaged or leaking
  20. Camshaft Position Sensor 2 -G163-
  21. Bolt
    • 9 Nm
  22. Knock Sensor 4 -G199-
  23. Bolt
    • 23 Nm
    • Tightening specifications affect the function of the knock sensor
  24. Bolt
    • 23 Nm
    • Tightening specifications affect the function of the knock sensor
  25. Knock Sensor 3 -G198-
  26. Bolt
    • 9 Nm
  27. Camshaft Position Sensor 4 -G301-
  28. O-Ring
    • Replace if damaged or leaking