1994 Audi S4FACTORY OEM SERVICE PROCEDURE

Basic Setting Diagnostic Test Mode (Function 04): Testing

  1. Press -0- button twice to select basic setting display group 00.
  2. Display will read - "INITIATE BASIC SETTING" "INSERT DISPLAY GROUP NUMBER 00".
  3. Press -Q- button to confirm input.
  4. Display will read - "SYSTEM IN BASIC SETTING 1 2 3 4 5 6 7 8 9 10".
  5. After a minimum of 5 seconds: Compare values in display fields with chart. See Fig 1 .
  6. After test driving and checking DTC memory, (within 5 minutes) compare values in display field 9 with specified values. If the vehicle idles longer than 5 minutes, the specified value can be exceeded without a malfunction being present.
  7. Display field 10 shows the ignition timing as calculated by the Motronic Engine Control Module (ECM). If there is a power loss, check the basic mechanical settings of the engine.
Fig 1: Display Group 00, Display Field Breakdown Information
G00160032Courtesy of AUDI OF AMERICA, INC.


  1. Press buttons -0- and -1- to select basic setting display group 01.
  2. Display will read - "INITIATE BASIC SETTING" "INSERT DISPLAY GROUP NUMBER 01".
  3. Press -Q- button to confirm input. Display will read - "SYSTEM IN BASIC SETTING 1" "1 2 3 4".
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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.