TSB: Some 2018 ? 2020 model year LS 500 vehicles may exhibit one or more of the following transmission-related conditions:
?R to D shift delay when the vehicle is cold.
?Shift bump when slowing to a stop.
?Harsh shift engagement from R to D.
The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been revised to address these conditions.
