Rexasaurus

Could not find anything on this for the 2014 model.

I have noticed driving on S/S+ mode with the transmission in "M" the car will seem to still shift up by itself and not bounce of the rev limiter like I would expect it should. Yes it will hold the gear all the way up to 7k rpm but automatically shifts up without touching the paddle.

Does anyone know if the car will actually stay in a desired gear? I have tried doing this with and with out TC on. I turn of TC by holding the button down, not by pedal dance.

Searching I did find that the 09 model will hold the gear until it hits rev limit and you actually desire to change it. Maybe this is something they changed on the 8 speed transmissions?

Any answers to this much appreciated.

unixadm

That doesn't surprise me and I wouldn't expect a car in this class or from Lexus to do that. The only car I've had which would hold a gear and bounce off the rev limiter until you commanded a shift with my 2009 C63 Merc. I never found it really necessary even with the most spirited driving. It was cool that it would do it though, especially when doing a burnout.

alexlude

When i test drove it in Manual, i was able to redline in Sport+ and it bounced off rev limiter maybe once or twice before i manually upshifted using paddles. Didn't want to keep it there with my foot on the floor with the salesman next to me! HA!

Rexasaurus

Really? I just try to do it today in 1st and it automatically up shifted into 2nd while in "M". I'll try it again when I leave work.

alexlude

this was not in 1st.. probably in 3rd or 4th.. but i mashed on the pedal.. was on freeway i think at 4th or 5th.. down shifted a few gears and mashed it.. it definitely hit the rev limiter and bounced once or twice

not something i would do to my own car, that's for sure.

JGard18

It comes in very handy if you want to AutoX this car, I know that much. I used to live on the rev limiter when I autocrossed.

I saw a video review of this car prior to buying it where the guy stated it would hold the gear and bounce off the limiter until you told it to shift, but I have not tried it myself yet

sloosh

You have to disable it to prevent it from upshifting automatically....it's somewhere in the tach options. I'm pretty sure you also have to be in S+.

aTeAse

Can anyone confirm this on the 3is?

sloosh

I can confirm it as I did it when on the track with one (350 F-Sport RWD) at a Lexus event. I just don't remember specifically how I disabled it.

Rexasaurus

So, after much trial and no success on this I finally found the answer I was looking for. The car unfortunately does not hold gears all the way until the rev limiter while going straight and flooring it. However, it seems like it does hold til rev limiter while cornering due to the "G-AI". I haven't tried it for myself, but I found a video of a guy reviewing it and hitting the rev limiter.


It was disappointing to me at first until found that video. Now I know I can at least autoX the beast. So in all, when you are putting it into manual mode it really isn't like a sequential gearbox, just a fancy automatic transmission that knows when it should and it shouldn't hold gears.

SonyHome

I don't think you can do that in the first gear.

According to this article its states:

http://pressroom.lexus.com/article_p...rticle_id=1519

alexlude

I hit rev limiter in straightaway while on the freeway during test drive. Gunned it hard. (That's why I don't purchase demo test cars). Probably from 3->4. It bounced twice before I upshifted with the paddles

BOBFSPORT

My GS and IS both will hold redline for a few seconds before upshifting. I have only done it when winding out the engine on the highway so i am not sure if it does the same in first.

BOBFSPORT

I don't think Lockup Clutch has anything to do with the transmission mapping allowing us to hold redline.

yowps3

I guess at Lexus it's

Reliability>>>>>>Bouncing off the limiter