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the socket in the console and behind the console and read 12.88V (accessory mode) and 14V with the car running. The front power socket read 10.8V (accessory) and just under 12V with the car running
The voltage levels for the front socket are odd, lower than expected, especially given that the other socket reads what one would expect, and it's the low voltage level that's likely causing it to 'stop working' (with whatever you plugged into it). Since the front socket has a voltage, albeit low, the fuse is okay.

I suspect there could possibly be a loose connection of the wiring to it causing some resistance and thus a low voltage.

Probably the best recourse is to have the dealer fix it under warranty, especially with the assumption some console panels and pieces might need to be taken apart to get to it.
 

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Just replaced the 20A fuse with a new one and the voltage in the console socket is back to normal.
I'm glad it's fixed. The fuse was obviously working, i.e. not blown, or else you wouldn't have had any voltage at the outlet, but sometimes a resistance can build up where the fuse seats in the fuse holder which could result in a voltage drop. I suppose the fuse itself could have a defect that could cause a resistance although I've never actually seen this. Just the act of removing the fuse and reseating it could have cleared up the issue.
 
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