Empty model 3 and unable to open front with manual method

U

unknownuser20

Guest
Last night I came home with 0% battery in my Tesla Model 3 Highland 2024. Since 5 hours the app says it cannot reach the car. The car is now locked. Trying to open it with the app or keycard does not work. I called Tesla and they told me I need to charge the 12v battery. They gave me instructions to open the front of the car by removing the plastic cover at the bottom of the bumper and connecting the cables to a battery. When I connect the cables to an external battery, I see sparks. I also measured the cables and there is a clear signal on them. However, the hood does not pop open. It is not a technical issue with the actuators because there is just no pop sound or anything coming from the front of the car.

What am I doing wrong?

I read in another topic that this method only works if the 12v battery is completely dead. If this is true, how can I drain the 12v completely if I can't open my car?