Quote:
Originally Posted by Jedi1
Odd that you asked this question today of all days. I just took the FRS into the dealer this morning. I had a break from my current tour about 4 weeks ago and took the car out for a day of serious driving.
About 10 minutes into my second run, the transmission started shifting itself from 3rd to 4th when I had not called for an upshift. In a straight line, not a huge deal. In a braking zone when you are expecting some engine braking to aid turn in, HUGE DEAL! My dealer is consulting with Toyota regarding whether this is a heat related fail safe or ecu/pm issue. If it is a heat based fail safe I have asked to question whether or not adding a quality trans cooler will effect our warranties. I'll let everyone on here know the response as soon as I get an answer.
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I would have guessed the same thing as you. Though, if they kept the converter lockup engaged, logic tells me that would reduce the heat instead of auto shifting? Perhaps if they forced it below a certain rpm... My buddy's e90 M3 gets trans temp warning lights often at the track. I'll ask him how BMW handles it.
Thanks for the great feedback! This is good to know. Please keep us updated. I'm inclined to get a trans cooler just for safety and longevity's sake. I hope there are already OEM fittings to piggyback off of.
I'm with you on the geeky nerdy thing. I've driven an "analog" car for many many years. I'm ready for something else. I'm most curious about how good the trans ecu is. The learning capability and adaptability of my old Porsche trans was quite impressive (before they went tiptronic) so I know automatic Torque Converter trans have come a long way.