Ignition System Overview

2008 Audi A3 Base, 2.0 E, Automatic DCTSECTION Ignition System Overview
Fig 1: Identifying Ignition, Assembly Overview
GWWN28-10030Courtesy of AUDI OF AMERICA, LLC
  1. Knock Sensor 1 -G61-
    • Contacts gold plated
    • To remove, the coolant distribution housing must be removed
    • Removing and installing, refer to Knock Sensor 1 -G61-Β 
  2. Knock Sensor 2 -G66-
    • Not installed on all vehicles
    • Contacts gold plated
  3. Ignition Coil with Power Output Stage -(N70, N127, N291, N292)-
  4. Spark Plug
    • 30 Nm
    • To remove, use the spark plug removal tool 3122 B
    • Removing and installing,
  5. Bolt
    • 20 Nm
    • Replace
    • Tightening specifications affect the function of the knock sensor
  6. Bolt
    • 10 Nm
  7. Camshaft Position (CMP) Sensor -G40-
    • Contacts gold plated
  8. O-ring
    • If damaged, replace O-ring
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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

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