TheAudi A4 (S4 8E B6, S4 8E B7, S4 8K B7) is manufactured with an indirect and a direct TPMS system, depending on the year. Direct TPMS has TPMS sensors installed in the wheel; if one or more tires indicate low tire pressure, the TPMS sensors will transfer the information to the vehicle’s ECU. An indicator light (low-line TPMS system) or
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