I recently purchased a new to me 2015 GTR and after <3weeks my tranny is acting up. It sure feels electrical & temperature related but I know these GR6's are finicky.
I took it to the dealer for in-depth evaluation and they were able to replicate my failure, but noted no codes are storing and the recommendation is full on replacement.
The symptoms were as follows:
Monday morning easy ~15mi drive on HWY in Auto, cruising easy and exit off-ramp down to normal speeds, press throttle to merge into traffic and no response. Try to manually downshift with paddles to get some power and no response. I think the car downshifted into 2nd and gave a lurch but I dont remember exactly because i was worried about getting hit form behind going so slow while merging. Car got into neutral (I think?) and luckily there was a service station right there that I coasted into <5mph
Turned car off and on, but got the T/M Check lockout. Would not start. Tried a few times with no luck. Waited ~30mins to cool off but still no start. I UBER to my meeting and come back 4hrs later, car starts up and runs fine.
Same ~15mi trip home. Car does same exact thing pulling into my garage.
Prior to this, all shifting is fine and crisp.
First cold weather of the year here in CA so it could be related. Knowing it feels electrical, springing for a tranny R&R without substantiation seems a big risk.
It seems like when I’m running Waze, playing music and everything else my phone will not charge faster than it uses battery. I’m thinking about hardwiring to a different power source to charge faster, but then of course I would need to swap cable to connect USB music.
Does anyone know how many amps that armrest outlet is or am I just imagining this or is it low power?