Sorry to hear about your woes in regards to your Titan. I have to admit that I have over 4500 miles on mine and have had nothing go wrong. As is typical with newly designed vehicles and new factories there will be mistakes. Mine also has a factory goof in it but it's in my favor, someone but the rear heat controls and wiring for the crewcab in my kingcab. All I need to do is change the center console and I'll have rear heat
I hope that your dealer looks out for you, mine has been extraordinary in meeting my needs since the purchase. I found a few flaws in the paint and they not only took care of it but buffed out a few scratches that were my fault and filled the gas on top of it.