Hello all. 2014 QX70S 5.0 here. 146k miles with meticulous maintenance including 2 trans services at 60k snd 120k. So, I’ve just experienced the usual valve body failure….wont shift past 3rd, CEL, P0720 code. Took it to my Infiniti dealership and we couldn’t find an OEM VB anywhere. Our only choice was the unit from Nexenzo from eBay. Installed that with new fluid and they call me to tell me that the new fluid might’ve damaged the transmission. They are getting a 3rd gear fault. They claim the VB is working fine. I pick it up and it’s still not shifting to third, and poorly shifting from 1st to 2nd. However, this time there is no check engine light. I drove it 10 miles home in 2nd gear and the CEL never came on. D/S mode still doesn’t work nor the paddle shifters.
Question is, is the trans likely damaged as they say or is this rebuilt VB faulty as well? I’m assuming they’d program the VB if necessary at the dealership, but maybe not? Seeing conflicting info on if programming is necessary. Because this is the wife’s car, this fiasco has forced me to purchase another car since she needs immediate transportation. However, I’d hate to trash the QX if it’s just another bad VB. Problem is there are no OEM ones anywhere to be found. Already spent $2k at the dealership for them to not fix it. Maybe I take the loss and let it go?
Question is, is the trans likely damaged as they say or is this rebuilt VB faulty as well? I’m assuming they’d program the VB if necessary at the dealership, but maybe not? Seeing conflicting info on if programming is necessary. Because this is the wife’s car, this fiasco has forced me to purchase another car since she needs immediate transportation. However, I’d hate to trash the QX if it’s just another bad VB. Problem is there are no OEM ones anywhere to be found. Already spent $2k at the dealership for them to not fix it. Maybe I take the loss and let it go?
