Is there anything that should keep the transmission from upshifting when in manual mode? I noticed this morning that I can't upshift at certain slower speeds. I figure it might be a safety feature like not letting you downshift at higher rpms when the computer knows engine will redline. It was just something that I have not noticed before.

Thanks.

 

Of course there is. Don't drive like a granny.

 

Like I said, it only happened this morning, car was just warming up so I was taking it easy. Thanks for your kind reply.

 

Silly ROK, granny dont shift.

OP, personally I letnthe car do the shifting during warmup.
then when both oil and water are mid bar. I GOES CRAZY

 

​​​​​​My guess would be the lower speed plus high gear wouldake the rpm too low and bog down.

 

When the car is in "protected mode" it will behave differently as opposed to when it is fully warmed up. You will notice this by the revs being limited to somewhere below the normal red line on the tach. If it's fairly cold, it might be down around 5500 or so. I was informed about this by a Lexus tech when I had an issue with how the car was shifting in S+ (that and manual is pretty much the only way I drive it) first thing in the morning. I'm guessing that is what you are experiencing.

 

I set the car to sport+ and either slalom or track, and turn the apexi throttle controller as soon as I start it, and let it warm up a bit. I also drive in manual mode right away but don't let the engine rev up too much until oil is fully warm or more than halfway to full temp. It was one of those mornings where I had to drive off right after starting the car. So, it was still in manual mode when I drove it except wasn't letting it rev up too high. Although I knew it was normal, I just thought I'd ask.

 

The upshift limitation is just a calculation on where the final RPM would be at after the shift is completed. If the computer determines that a torque deficit will occur (basically the engine requires a downshift) it will inhibit the upshift in the first place.

If you're still in the initial "warm up restriction" mode, it's entirely possible that a downshift from torque deficit will require greater RPM than redline to overcome, which may also cause further upshifting to be inhibited. But I've never had mine stay at 3K limit for more than a few seconds before rising to a driveable level.

 

I've been having some crazy problems with this trans. First under hard braking the shift lever would slide into nuetral. Then occassionally it will do this thing where it just sticks in gear. Fluid level is fine, and I tested the fluid, looked good. Really getting to me now!

 

The lever popping into neutral during hard braking should be looked at. Im assuming the sticking in gear is in auto mode and sports +?

 

Even in manual, well after warmup, dealer doesn't know why. Fluid is testing on my end as good and good level from dealers end. Yes they adjusted something on the shift rod but now the shifter feels all notchy.

 

Could be the solenoid?