Question about 2000 Audi A4
You have to hit certain buttons before you can enter the code, and then hit those same buttons to tell the head unit that you're done entering the code. Sometimes it takes several tries before they'll work.
The other possibility is, if you enter it twice incorrectly, you have to let the car sit with the key on (but engine off) for two hours before trying again - it requires that time in between. Less than two hours and it'll ignore any attempt to unlock it.
Posted on Aug 07, 2008
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Posted on Jan 02, 2017
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