I just purchased a 2018 jk with 5k miles and doesnt start every once in a while, probably every 5 days or so. What i have to do to turn it on is wait about half an hour or so and then the jeep starts no problem, i make sure its on park and everything. Im sure its not the battery or the starter, i had them both tested. Ive taken it to the dealer but as usual they cant duplicate anything so theyre helpless. Any ideas anyone please help me out thanks.