Recently I arrived for my portion of DC and I noticed that charger was broken. I contacted provider in Ireland and today they arrived to fix it and they told me it was because LEAF that dealership uses as demo has a broken port and connector fell off causing charger to hangup. They tried with some newer LEAF they had in stock and it worked perfectly, in meantime I arrived there to test it with my LEAF. It seems that CHAdeMO does not perfectly fit my car any more and can be removed without pressing any buttons on connector, basically it does not lock up. I do not see any signs of wear on my socket and neither I do not see any signs of wear on CHAdeMO connector on this charger. Did you experienced it earlier? If you choose to try to remove connector without pressing any buttons make sure that you are NOT charging!