This instruction show you guide on how to use Launch X431 Pro3 to diagnose & repair Audi A7 2008 USA market tire pressure sensor 01521 fault case. For more Audi repair,please check here:Audi trouble repair. Procedures: 1) Choose Audi V27.50 or a later version. 2) Choose System Selection. 3) Choose 65 Tire Pressure Monitoring. 4) Choose Read DTCs. The DTC “01521 Tire pressure sensor” is obtained. 5) To locate the faulty tire pressure sensor, read data streams for the FL, FR, RL, and RR tire pressure sensors. 6) Analyze the following data streams: ? 003-1, (FL wheel status Ⅲ) wheel sensor position: 2.081.773.353 Status 00h ? 006-1, (FR wheel status Ⅲ) wheel sensor position: 2.081.770.983 Status 00h ? 009-1, (RL wheel status Ⅲ) wheel sensor position: 2.081.771.502 Status 00h ? 012-1, (RR wheel status Ⅲ) wheel sensor position: 0.000.000.000 Status 00h 7) Based on the data stream analysis, the RR tire pressure sensor is determined to be faulty...
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