Hesitation problem at various speeds (TSB info post #159)
03-10-17, 12:16 PM
#271
Got the TSB updated today and noticed that now the transmission is more like in sport mode. It shifts faster at low speed but not really in 4th or 5th gear. I feel like my RX is shifting more like a sport car now than ever but my daily driver is a GX. Not sure if that's a good thing. Anybody feeling the same thing after the update?
03-10-17, 12:22 PM
#272
Yes night and day different.
If the shifts are a little too tight, you can always try eco...
If the shifts are a little too tight, you can always try eco...
03-10-17, 01:51 PM
#273
Got the TSB updated today and noticed that now the transmission is more like in sport mode. It shifts faster at low speed but not really in 4th or 5th gear. I feel like my RX is shifting more like a sport car now than ever but my daily driver is a GX. Not sure if that's a good thing. Anybody feeling the same thing after the update?
happens to early dropping the RPMs to low causing the drone and almost feels like the motor is lugging until I press the accelerator
and wait for the down****. The one thing I was hoping the TSB would have addressed did nothing. If they would have programmed it
correctly it would have also corrected most of the drone. Lexus dropped the ball again.
03-10-17, 06:12 PM
#274
Driver School Candidate
I do not think there is a way to get ride of the drone other than redesigning the exhaust system or driving the car in manual mode and keeping the engin RPMs above 1500. Now on that note I spotted a new 2017 Highlander at a local gas station today, so I approached the owner and asked him if he is having any smiler issues like ours? His answer was yes in terms of the hesitation and the quick shifting however no droning at HWY speeds or city driving, which make sense because the Highlander has a different muffler (smaller) and pipping between the resonator and muffler.
03-10-17, 08:02 PM
#275
03-11-17, 06:23 AM
#276
Radio had defaulted to dealer settings, but a quick tab to personal settings fixed that. Check rear tailgate if you had personal setting, mine didn't change. Other than the radio default, I did not find anything changed.
03-11-17, 08:14 AM
#277
What do you mean by "a quick tab to personal settings"? Also, do you know if they need to reset by disconnecting the battery after they apply the update?
03-12-17, 11:09 AM
#278
When I got the car back the radio settings seemed to be gone...they weren't. It had defaulted to "mixed presets"....I had it on "individual presets", so it was just a push on the mixed presets to get it back to individual presets. You might not have it set-up the same way, so maybe you won't notice any difference...
03-12-17, 11:10 AM
#279
Yes they are to disconnect the battery after the install.
03-13-17, 06:14 AM
#281
I had mine done on Friday and it was much worse. Saturday I reset the ECU by unplugging the battery, since then it seems better but I wouldn't say great. In sport mode it is much more aggressive. For those in the know, do you think the reprogramming took when I reset the ECU. I am going to drive for a while, but I wonder if it need to go back to dealer. Is there any way to check to see if it was done correctly.
03-13-17, 07:18 AM
#282
I had mine done on Friday and it was much worse. Saturday I reset the ECU by unplugging the battery, since then it seems better but I wouldn't say great. In sport mode it is much more aggressive. For those in the know, do you think the reprogramming took when I reset the ECU. I am going to drive for a while, but I wonder if it need to go back to dealer. Is there any way to check to see if it was done correctly.
Some people say they don't notice a difference. Maybe they had a different software load than others....I really don't know if there are updates from build dates.
Mine was very bad, even a novice driver would know that something wasn't right with the shifting, especially at slow speeds then light acceleration.
My fix did not get installed properly due to some missing info, no big deal, they did it again and it worked. Mine was much worse after the original install, but much better after the second. They did not disconnect the battery after the first install and the tranny would rev very high before shifting to the next gear, it seemed lost as to when it should shift.
Properly installed shifts are crisp, you notice and can feel it downshifting as you slow to a stop. The car is engaged and ready to accelerate almost always. Not wishy washy herky jerky all over the place, as it was before.
Take it back, make sure they install the correct TSB for your car, I think there are a few loads depending on your model...check the posted tsb further up in this thread. Then make sure they disconnect the battery for some period of time. All should be good after that.
Good luck, it's worth the time to have it done right.
