We're coming into warmer weather now so it might make it through the summer but the risk goes up if you try and take this battery through next winter. Some might last another year or so after just one full depletion, but this battery already has exhibited that it's probably somewhat worn out, and again this may not be the first time it was fully depleted, no way to really know. Either way I wouldn't recommend going too much longer with this battery because once a 12V battery has been fully depleted even just once its days are numbered. If however you aren't that concerned about the cost then it will certainly be easier to just have the dealer replace it while you are there. If they say it needs replacement then at least their price will likely be a bit less than the dealer. If they won't do it under warranty and you are hesitant to buy a new battery at this time, especially at dealer prices, then at least go to an auto parts store and have them test the 12V battery. Hopefully the dealer will replace the battery for free under warranty but that's up to them to decide. That being said a dead 12V battery after the car sits for two weeks is not unusual for Clarity, but not because the batteries are necessarily inferior but because many of our cars sat for a long time on dealer lots without being charged, which shortens the life of the battery. Unless there were any add-on accessories like a dash cam that were draining it. The dealer will hopefully replace the battery for free under warranty as two weeks of sitting is a bit too short of a time period for a 12V battery to fully deplete especially for a car that is new. The dealer can check for codes to determine if there are any other underlying problems but assuming you are able to jump start it then the odds are that this was simply a case of a less than fully healthy 12V battery that drained after two weeks of sitting. Assuming that it jump starts there is no real need to have it towed to the dealer unless you just feel more comfortable doing that, especially if they do it for free under roadside assistance. But to be even safer the next trip should be straight to the dealer. And even then you will want to bring a portable jump start battery with you since the overall condition of the 12V battery is unknown at this time. If however you plan on first taking it to the grocery store or wherever then I would let it sit in READY mode for at least an hour to try and get the 12V more fully charged. I'm not sure how long it takes to fully charge the 12V from fully depleted, but I would think leaving the car on in READY mode for at least thirty minutes will give it enough of a charge so that it will start the car without a jump, assuming that the next place you drive it to will be the dealer. Of course check to make sure that your EV range is above 0. Unlike a gasoline car where you would then need to drive the car for an hour or so to get the battery charged, with the Clarity you can just leave it sitting in the garage turned on (again make sure it says READY) and it will just sit there quietly charging the 12V battery. Once the car is on (make sure READY appears on the display) then the HV battery will immediately begin charging the 12V. Most likely a jump start will get it started, either with booster cables or with one of those paperback-sized portable jump start batteries, which actually work really well especially on hybrids because cars like Clarity the 12V battery is used only to get the electrical system running and then the much larger HV battery takes over.
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