A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
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Tap diagnostic function "006 - Basic Setting" in selection - 1 - and activate by pressing the -> button.
Display on (VAS 5051B):
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In button field - 1 -, press buttons 7 1 for "display group 071" and confirm entry by pressing Q button.
Display on (VAS 5051B):
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Check reading in display field - 1 -.
‹› Specified value: "Reed closed".