Throw a scanner on the car and see if the CAN Bus is talking to the starter when you actuate. I have a Autel and a Think Tool and both will show activities when you activate circuits. This will let you know if you have a bad relay or even a defective starter. Otherwise, you could get under the car and pro be the starter and have someone push the starter and see if you have input. If you have input the starter would be defective. If not check the relays first. I have a 2013 and the starter relay was intermittent. I borrowed one from the fuse box and the car ran fine. I just bought all new relays and changed them all. Problem resolved for me... Anyway, if you need help send me a note and I will be glad to help.