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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Maintenance >> Procedures >> Maintenance Reminder Light (Reset Procedures) >> Emissions Maintenance Reminder (Oxygen Sensor) >> Emissions Maintenance Reminder Reset - Procedure 01

Emissions Maintenance Reminder Reset - Procedure 01

Every 30, 000 miles an oxygen sensor service reminder light in dash will illuminate. This indicates emissions system should be checked and oxygen sensor should be replaced.

  1. To reset counter, remove 2 upper and/or 2 lower instrument cluster cover screws.
  2. Pull cover toward steering wheel.
  3. Lift upper instrument cluster cover off of cluster.
  4. Break off square plastic switch cover at top center near imprinted OXS. See Figure.
  5. Using a screwdriver, push switch to reset light. On some models, remove instrument cluster if necessary to access switch.
  6. To turn off reminder light on all models except Coupe GT with electronic dash:
    • Trace speedometer cable to reset box (in-line with cable). See Figure.
    • Press White button on box. Turn ignition on, and ensure indicator is out.