Connect the 12v battery charger to these and it should energise the lock. Remove the cover and see if there are two wires that can be pulled forward. Tesla are increasingly putting cables behind the towing eye cover.On early model S, you may find access through no more than removing the nose cone.Each model has a slightly different process for access and these are detailed in the appropriate guides linked to above, however as a quick start guide: If course with a flat battery you can't just open the frunk as normal and you have to follow the emergency frunk opening procedure. The battery is accessible in the frunk of the car and so to gain access tot he battery, you need to open the frunk. Each car is slightly different and the details of the steps to gain access are include in the user and first responder manuals however we cover the basic steps here. To gain access to the 12v battery you need entry to the car. The 12v battery can run flat within 24 hours once the main battery pack has stopped supporting it. This minimises any drain on the battery preserving its life, but this equally prevents it topping up the 12v battery and effectively paralysing the car. Tesla charge the 12v battery from the main battery pack, but Tesla also take the view they must protect the main battery pack as much as possible and if it is running low may put the battery into a deep sleep/low energy mode. If the 12v battery is flat then it can feel pretty terminal for the car, the doors won't unlock, the computers won't fire up and more worrying the main car battery will not charge. While many people monitor the health of the main battery pack, the 12v battery can fail or run flat, especially if the car is left for a long period of time and the main battery has entered its low energy mode. Each Tesla has 2 batteries, the large expensive battery pack with an 8 year warranty and a traditional 12v battery that runs the cars ancillary systems like any other car.
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