A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
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Push in the upper (lower) protrusion on the function selector switch 'A' to select the 'Tire pressure' option
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Push the 'RESET' button.
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Push in the upper (lower) protrusion on the function selector switch 'A' to select the 'Store pressures' option
Following each intentional change in specified pressures, the adjusted tire pressure must be entered and confirmed again.
After you have saved the tire pressures, the system will measure the actual pressures once again, and then save these as the new pressures.