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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> General Information >> Maintenance Reminder Light (Reset Procedures) >> Emissions Maintenance Reminder (Oxygen Sensor) >> Emissions Maintenance Reminder Reset - Procedure 02

Emissions Maintenance Reminder Reset - Procedure 02

Every 60, 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, lift rear seat and push button marked OXS on reset box.
  2. Turn ignition on, and ensure indicator is out.
  3. 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.