heather Belanger 
2017 Nissan Titan Crew Cab SV 4dr Crew Cab 4WD (5.6L 8cyl 7A)
alemon
 2/24/ 17 we purchased a 2017 nissan titan SV what we believed to be a tough work truck with extras. Well within one week we started having issues with the parking sensors and sonar warning light staying on. off the dealership with this truck for repair. a day later they state it was repaired and ready to pick up. on the way home the sonar warning came on and the parking sensor error back on. back to the dealership again, this time they said it needed a right frony sensor, it came in a few days later so the truck was left there for repairs, we received a phone call the truck was ready to pick up. we get to the dealership and upon going out to the truck and starting it the same issues appeared the sonar warning and parking sensor errors again, went right back in the dealership and again the truck was left at the dealership, then service calls us and tells us the truck needs to have the sonar module replaced. so we wait and a couple days later we receive a phone call that the truck is all done and ready to pick up, so back to the dealership only to arrive at the dealership to find out that they have the truck back in the shop again for the same issues/problems and we are being told by the service advisor that once again the truck needs more parts replaced with this tome being a pin for a wire harness/connector. what a blow to us. especially when since the first time this vehicle was taken in the service advisor stated that he checked all connectors and all appeared to be in great shape. so now the truck is still at the dealership waiting parts and repair. We contacted Nissan usa consumer affairs division to file for a lemon and a replacement truck, this is pending and takes weeks. the dealership will only do a trade towards another truck which cost us several thousand dollar loss on the trade, NO WAY!  apparently this dealership service has been in contact with Nissan tech dept. and being told try this and that which so far nothing has worked to fix the issues.   Now we are very skeptical of these trucks especially since this is a new truck with very little miles on it. what next?