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Second key buttons programming?

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Old Feb 5, 2024 | 06:19 AM
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Default Second key buttons programming?

I have only ever used my primary glossy key fob. This past weekend I tried using my dull second set. I went outside and nothing. It would not open the doors. If I opened with my phone, the car did start when I placed the key on the key pad.

I changed the battery and now I get nothing. No open/close and it will not start.

How do I re synch my second key fob with my car?
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Old Feb 5, 2024 | 07:37 AM
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I think you never need to re-sync the keys, unless you have had the comfort access module replaced/serviced (In that case, the workshop should ask for both keys before doing the job).

Does the small red LED on the non-functioning key light up when you press the buttons? If not, the battery might not be fully inserted. BTDT, it's a bit fiddly despite seemingly looking trivial.
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Old Feb 5, 2024 | 10:22 AM
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Originally Posted by orbit0353
I think you never need to re-sync the keys, unless you have had the comfort access module replaced/serviced (In that case, the workshop should ask for both keys before doing the job).

Does the small red LED on the non-functioning key light up when you press the buttons? If not, the battery might not be fully inserted. BTDT, it's a bit fiddly despite seemingly looking trivial.
I'll check. I certainly have not seen a red light on my keys.
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Old Feb 5, 2024 | 10:42 AM
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There is a red light between the unlock button and the small Audi logo.

It shines through the plastic, no indication of a light there just by looking at the surface.
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Old Feb 6, 2024 | 03:25 AM
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Update:

In that weird Audi way, the secondary key fob just started working eventually. I simply cannot say what caused it to work. A button sequence or being in my pocket while using the primary FOB in the car. It just went from zero actions to fully usable and I have no idea why.
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