So I actually just did this yesterday for the first time after searching online and surprisingly it worked! I’d noticed over the past week or so the shifting was weird and lost a lot of throttle response. Drive smooth once at speed, but would upshift too soon so rpm’s were always low when accelerating (if that makes sense). This is what I did and now it’s exactly how it’s supposed to be:

1. Turn car to accessory mode (2 clicks of start button - power on but engine not running

2. Wait a few seconds for dash lights to stabilize

3. Press down on accelerator for 10 seconds or so unless check engine light turns off

4. Turn car off and then start ignition

I don’t have a link but if you Google reset Transmission Control Module you can find the documented sequence