Interesting, I like the throttle response and shifting on my 8/11/23 production date '23 so much I want to put a lock on the OBDII plug so they don't touch it. No problems with shifting or rolling acceleration. I like the Sport mode for Houston highway traffic holding gears for the occasional jumps to light speed or pulling out from a dead stop at full throttle. I do feel the acceleration stabilize as it passes 2.5k-ish RPM but I imagine the ECU is torque limiting to safe the drivetrain. Daughters are learning to drive, one of them prefers Eco mode for less sensitive throttle response.
ECU reprogram Service Compaign
- Thread starter usnick1982
- Start date
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@Joe T I'm in 024 if you want to drive it.
Yes I am through there daily almost but mostly in 007 or Rice Village throughout the day.
Maybe this weekend? I can come to you.
Last edited:
EscapeWagon62
SILVER Star
Mine is a 24 so it mostly suffers the lag at rolling stop vs any significant transmission downshift/jerky behavior.
Worked much better after having the Lexus dealer so a re-learn on the transmission.
Lasted approx 500-600 miles and reverted..
Disconnected the battery for 30 min and it’s better again.
Spoke to the technician who said that Lexus is still working on a fix, they are very concerned primarily since it affects GX550 too (many of the buyers are new to Toyota/Lexus which was a goal for this platform).
I’ll update once a fix is hound but do recommend an occasional battery disconnect.
Worked much better after having the Lexus dealer so a re-learn on the transmission.
Lasted approx 500-600 miles and reverted..
Disconnected the battery for 30 min and it’s better again.
Spoke to the technician who said that Lexus is still working on a fix, they are very concerned primarily since it affects GX550 too (many of the buyers are new to Toyota/Lexus which was a goal for this platform).
I’ll update once a fix is hound but do recommend an occasional battery disconnect.
And the lag at a rolling stop gets worse, its now delay/kicking me as low as 2mph. Seems like some corporate discipline is very sorely needed at Toyota/Lexus. The effective gear ratio is 2.19 in 2nd gear.
I have a programmer waiting and ready to go. Guess I will use this BS as an excuse if they want to void my warranty. Definitely getting 5-30 oil into it asap.
I have a programmer waiting and ready to go. Guess I will use this BS as an excuse if they want to void my warranty. Definitely getting 5-30 oil into it asap.