Make sure TSB Program 184, 185 (ECM & TCM Update) was done to address harsh downshift when cold shifting to second. Sounds like it was never done. Also get the Adaptive learn reset and make sure they follow proper procedures, not just reset it and kick it out the door.

 

...and if you don't have a the service records, it would be a good idea to change the trans. fluid. :nerd:

 

Sound like another chassis that not had the PCM & TCM updated ,, few yr ago some of them was recall for update, others was done as they show up,,,, silly Hyundai Motor Co..

Anyway, visit dealer, Job 1 --> Customer States "harsh down shift COLD around 20 MPH when slowing down to stop"...

Do full fault code search... PRINT

Verify PCM & TCM up to date (Events 184 & 185)... do this while car is hot,, and then after update, reset Adaptive learn for transmission, hop in and do initial test drive while still hot to start the learn process...

Have them print E-Report off GDS to reflect fault code search results,, both program success and reflect learn reset, and you want a copy to see scan results and that that the programs successfully installed, along with reset.. all tis will reflect on report if done correctly.. you paid for it, they should give it to you..


Print this reply and hand it to them if they look at you funny or start to give you any grief.. Tech ID --> HMA0000XXXXX provided this info


This topic been hashed in the past, might do search and find my previous posts on the this concern with instructions

 

Please read & apply my thread below on this forum before seeing the dealer:
101 - Auto Transmission Reset for all Imports

Also, top off the ATF if needed but DON'T FLUSH THE TRANSMISSION !!!

 

Nice information. . .

 

I'm having the same issue with 2009 sonata how do i know if previous owner did the update or any other recalls at it has

 

Please look at my thread quoted before. That should fix this issue.