2018 jk. 25,000 miles. Owned since 10k miles. Garage queen. Never mudded or trail driven. New battery. About once a month, turn the key, no start. All electrical works. Lights, radio, heater, etc. Wait 5 or 10 minutes, eventually it will start. I have recently noticed that if I get out and rock the Jeep with the transmission in park, it will start every time. Sounds like a bad sensor to me. Can somebody help me locate this sensor? Thank you for your help.