Car: Hyundai Sonata Hybrid
Yesterday, before going into work I forgot to shut my car off. That was at 9am. Around 1pm, I received and email that my car was running so I went out to shut it off. Once I got outside, there was a large puddle of fluid under the car, gas tank empty, and battery dead.
I had a service come to jump the car and put fuel into it. As I went to drive home, I noticed the AC was not cold and the temperature gauge was all the way up. I pulled over and let the engine cool before continuing home. No weird noises or any red flags.
Upon getting home, I let the car cool down and popped the hood. First bad sign was my coolant reserve tank was empty. Secondly, there appeared to be coolant residue near the small hole in the coolant reservoir. Finally, I decided to open the radiator cap and it was bone dry.
I will note, the temperatures where I live we’re around 90 and the car was in the sun... extremely hot.
What exactly could’ve caused the car to leak all the coolant fluid?