A8 Quattro Sedan V8-4.2L (BVJ) (2008)
Indicated on display of VAS 5051:
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Select function "10 - Adaption".
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Measure the thickness of the thinner of the two brake pads (without backplate) and enter the value via the keypad or scroll-bar.
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Select keypad or enter via scroll-bar.
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Enter value between 10 - 23 mm via keypad -2-.
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Confirm by pressing "Q" key (moves piston to original position).
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Select Save and then Accept.
When re-installing old brake pads (different procedure)
Indicated on display of VAS 5051:
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Request to enter a display group in display zone -1-.
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Display zone -2- shows a keyboard.
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Enter "05" or "005" as display group number via the keypad -2- and confirm entry with "Q key".
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Install wheels
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Check brake fluid level and top off if necessary.
NOTE: The electronic parking brake must now be re-calibrated.
Requirements
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Electronic parking brake must be released.
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Selector lever must be in "P" position.
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Switch ignition off, remove ignition key and lock steering wheel lock.
The re-calibration is performed.
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The electronic parking brake audibly travels up and back down.
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The air gap adjusts itself.
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Wait until this process is completed.
The re-calibration is now finished.
The DTC memory is then erased.