90 Quattro 20V (Canada) L5-2309cc 2.3L DOHC (7A) (1989)
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release AM/FM (AM) and SCAN (ARI-Z) buttons
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radio display changes to a radio station frequency
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radio is now coded and plays
Unlocking an electronically locked radio
After two incorrect attempts at entering the security code, the radio will lock-up electronically. The display shows SAFE and will not change.
To unlock:
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leave radio switched ON for approximately one hour
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after one hour, reactivate (code) radio as it would be after a power interruption
Note
The radio will never permanently lock-up no matter how many incorrect coding attempts are made. The reactivation procedure can be repeated
indefinitely.
See Warranty Service Circular 89-22-A, dated September 30. 1989 for instructions on obtaining a lost or forgotten security code.