V6 Auto - “Gearbox malfunction service required”

[geoffbland]

I did brought the car (with the codes erased) to the dealer, they kept it for half the day trying to replicate the problem, but found nothing wrong.
They did notice that my car's software needed 2 or 3 updates, so they assumed that it might be a ECU glitch and I went back home.

Just a guess but I suspect there may be a timing error (race condition) when starting the car; the various modules around the car not `reporting back` fast enough when the car is started. I had something similar with spurious ABS module errors a couple of times when starting the car from cold. One of the recent software updates seems to have fixed this - not had any similar error since.

 

[Toomanyloti]

mine threw a few wobblers in the first few days of ownership after running out of fuel a couple of times (software glitch causing the gauge to miss read). Cleared the codes and nothing since.
Last service back end of summer had load (maybe 10?) of SW 'upgrades'

 

[grezex]

So mine cleared on its own overnight; I took a risk and was able to do another half day of track without it complaining, but I kept it idle between a session as it seems problem will manifest after a long period between off and on again. Maybe it really is ECU learning to actually work the gearbox...

Seems like the car settled down a bit without codes but felt slower in shifting during sessions.
I was also able to make it home without errors even with a couple of stops in between.
Thinking of bringing it to the dealer to check it out, but with codes gone, I kind of doubt they're going to be able to reproduce...

Definitely not confident in bringing it to another track event error-free, but what can ya really do if the dealer can't reproduce or see existing errors? Software updates and pray?