S4 Sedan L5-2226cc 2.22L DOHC Turbo (AAN) (1992)
Emissions Maintenance Light: Service and Repair
Fig. 2 Instrument Cluster OXS Tab Location
On models less turbocharger, after completing the required service, turn off OXS indicator lamp by breaking plastic tab off back of instrument cluster,
Fig. 2. It will be necessary to remove instrument cluster to gain access to tab. Insert a suitable screwdriver in opening and depress elapsed mileage reset
button.
Fig. 3 OXS Switch Reset Button Location
On turbocharged models, after completing the required service, turn off OXS indicator lamp by removing rear seat and depressing button on oxygen
switch, Fig. 3.