Wanted to get some input...

I live in the US and found an amazing spec NX300 F SPORT AWD, but it's a Canada spec. Wanted to know what the disadvantages would be of buying it.

Is it possible to reflash this to US spec?

Would dealers service this car in the US?
Anything else I should know before I pull the trigger?

 

Welcome aboard.

Of course it's best to call and ask your closest dealer.
I wouldn't be surprised if they said they wouldn't service something if it's within the warranty period

However with your own money, "please bring it in"

 

Reflash won’t get it to “US spec”. But shouldn’t be any issues with servicing or warranty.

 

What are the differences between US and Canada versions?

 

warrenty and service would be a non issue, and highly doubt it can be reflashed to US spec ( this might be the only issue if updates are needed ).
The only real difference I see is the speedo and odometer will be in metric, and full time drl.

My brother always did the reverse, bought US cars for use in Canada (personal use) .. no problems

 

Also the climate controls… those cannot be changed from °C/°F via user settings nor even reflashed. You would need to replace the climate control ECU.

 

never thought of that point, but haven't dug into the personal settings more than when I did the initial set-up.
Its the one thing my GMC canyon does well. I can easily switch from imperial to metric, it changes everything from tire pressure to speed, bonus it does not only change the digital speed, but also the speedo dial... something I assumed the
​​​​​​Lexus would do as well.

 

Lexus settings change everything EXCEPT climate control. They’ve always been that way, I don’t know why. From my first IS to my LC.

Both my Lamborghinis change everything (even ODO, which is rare). And one step better, the URUS predictive cruise control camera reads and adjusts the speed from the speed signs regardless of kph or mph. Based on the GPS locale, I assume.