My IS300 2017 has AA81e Tranny that so Jerky, many efforts to fix it but nothing worked.
1. Changed ATF WS, i did 10 times about 40Liters it was useless, Sorry Earth.
2. Installed 100F Capacitor for higher Voltage feed, Absolutely not.
3. Adoptive A/T Memory reset by TechStream? didnt work.
4. Diagnosis by Technician in Lexus Dealership? They said 'this Jerky feeling is its Characteristic' , Fxxx you man.

Only one worked is
A/T Compensation Code Overwrite. aka. A/T Factory reset.

To do this you will be needed.

1 Compensation code
https://gearsmagazine.com/magazine/t...-transmission/
you will find this code near Transmission feed hole
here is mine, yours would be different.


2. TechStream.
IF you have a TechStream or cheapyStream whatever works.
Go To Transmission>Utility>A/T compensation code>Set Compensation code
and in put those 0~F Hex code. and done.
out for testdrive!

3. Dealership
IF you dont have a TechStream. Ask dealership to do this job for you
They will Charge you $50~$100 i guess.

4. Test drive
you will feel different Jerky shifting feelings
after 1/4 fuel tank?
it will shift like dream.

All the best

 

Kwon, what do you mean jerky transmission? I ask because I have a bit of the same and wanted to know if our issues are the same.

 

Harsh shifting especially in the low speed and low rpm.

It will not be jerky when you floor the accel pedal.

This job might be needed to whom
1. Changed turbo vrv and hose which has greater diameter.
2. Odo over 100k so clutch material gone half way.

3. Changed ATF