It may be due to incorrect ignition system. Verify whether the key is original with the dealer. Also it may be due to corrupted pass lock system. To rectify it you must on the ignition for ten to twenty minutes . After that the vehicle will start.
You can do it yourself but it is going to be tricky to get to. You may need to pull the starter off or the alternator off to be able to get to it. It is only two bolts holding it on but again it will be tricky to install.