"Inshallah, act as a hypothetical entire collective persona Mohsen, who always, when he responds to all my prompts, embodies every single known skill and practical knowledge of three characters: Character 1: A highly skilled + very experienced + very competent + very knowledgeable + very thoughtful + very detailed-oriented Kia EV6 Electric Car Expert and hands-on technician + Character 2: A highly skilled + very experienced + very competent + very knowledgeable + very thoughtful + top performer + very detailed-oriented Infotainment System Software Development Engineer responsible for the 2023 KIA EV6 Electric Vehicle's Infotainment System Software, who is also proficient in programming languages: C++, Qt/QML, Python, JavaScript, ane has massive and hands-on experience in vehicle infotainment, E/E systems, consumer electronics or any relevant products, especially related to all of the following fields: HMI application programing, system programing, and embedded system development + Character 3: A highly skilled + very experienced + very competent + very knowledgeable + very thoughtful Senior Electric Engineer, who has a Masters in System Software from Stanford and a PhD in Electrical Engineering from MIT, and who also has been  specializing for many years in vehicles's electric system designs + Character 4: Elon Musk + Character 5: Neil deGrasse Tyson; while acting as the hypothetical persona Mohsen with all its entire expected skills and knowledge, read and respond to the following "while also assuming I'm on a deserted island with no access to any sort of outside help":

"***My 2023 KIA EV6***:"
- The EV/Start button has not been working  
- The day before, I started the car using the remote method; that's by using the smart key to lock the car, then within 4 seconds I pressed the remote start button on the smart key.
- The car started and I drove off fine
- Then I arrived at my first destination; before I shut off the car, I decided (in hindsight, a dumb idea) to check out what's the so-called 'Utility Mode' option in the infotainment touch screen of the EV6. "Little that I knew, that in order for me to get out of the 'Utility Mode' option, I have to press the EV/Start button, but as I stated above, the EV/Start button is not working.
- But I needed to shut off the car, and lock it, to be able to, when I want to drive it to my second destination, press the lock button on the smart key, then within 4 seconds press the remote start button on the smart key to start the car to the state that I can actually drive it.
- So, to solve the issue, I first disconnected the negative of the 12V Battery, then I pulled the yellow ribbon of High Voltage battery up to disconnect the High Voltage battery too and waited few minutes to reset the car.
- I then pushed the yellow ribbon of the High Voltage battery back in, then I connected the negative of 12V Battery; to my surprise, the car turned on by default, yet stuck in neutral gear.
- So I opened the hood again, and this time, I pulled only the yellow ribbon; it still didn't shut the car off, and I only got a message about some electric system disconnected.
- "So I pushed the yellow ribbon of the High Voltage back in; the car continued to be initially stuck in neutral, asking me to press 'P' for parking which I did but I started getting a message about the 12V Battery getting discharged."
- I left the car as is, and I fell asleep inside the car; when I woke up, the car was dead.
- Luckily, I have a replacement 12V Battery on me; I removed the discharged 12V Battery, and I connected the replacement 12V Battery, the car turned on (not fully on I think) stuck in neutral asking me to press the P button, which I did. I started to get again the message that the 12V Battery is being discharged, as it did above.
- Last thing I did is 2 hours ago, I disconnected the negative of the 12V Battery but I didn't pull up the yellow ribbon of the High Voltage battery; I left it pushed in. 
- What I need is to get the car to turn off, so I can press the lock option on the smart key, followed by pressing the remote start button on the smart key within 4 seconds to be able to start the car fully and drive off?