I will share my wife’s 2013 Nissan Sentra story, 42K on the clock at the time.
We observed rattling when coming to stop and then it became worse and rattle at idle showed up too.
The car was literally pampered with maintenance, transmission fluid was replaced at 30K miles, as appropriate for “premium” service schedule.
From my observations, it was transmission all alone, and it was a clear warranty case.
I showed that to dealer and their mechanic declared it is a catalytic converter heat-shield, which was clearly fine, but they demanded $200 parts&labor to replace that.
FINE… I considered that to be a “surcharge to get access to warranty service”…
The moment I paid that $200, they suddenly reclassified the issue into the transmission warranty case and they apparently replace “tens of transmissions on this new generation”… but sure it was not clear before the unneeded head-shield “surcharge” (not sure they even replace it at all, it was still all new and shiny).
When I asked if I’m getting a new replacement unit, I was told it is “Nissan refurbished” and to my question how much I would have to pay when my warranty lapses and it fails again, I was told “between $4200 and $4500”.
That car was traded away for Mazda 3 within 2 weeks and we decided not to look at Nissans until they stop putting failing CVTs on their cars.
The unit failed was the third generation unit, and both prior generations had the same dismal history on the failures.
@h.kris45_168353, I would suggest NOT to go to the dealer, but find good/reputable transmission shop (not the chain one!) and get their advise. I think the dealer way will be an exercise in frustration and unneeded costs.You have post-warranty car after all, you are not specifically bound to the dealer and the only repair they will know is to “replace”.
If you decide to go to the same garage for the second fluid replacement - that’s fine too, just make sure they use original Nissan’s fluid, as this unit is picky to the fluid type.
When drain&fill is used, only around 60-65% of fluid can come off, so second “flush” is definitely not gonna hurt.