Perfect. So nice to get a scientifically sound explanation like this. Thank you!The constant is hardcoded in the firmware. The firmware is determined by your car's individual hardware configuration.
(Which gives you an idea of the software development hell tesla is in as the number of unique hardware configs proliferates over time)
As a practical matter, yes, all 2021 MY LR's *running the current firmware* will have the same constant. Your specific VIN was probably not a unicorn whose battery pack or drive units or whatever differed from the cars before and after it on the assembly line.