I have 2015 is250 f-sport that i bought from a used car lot, the Nav SD card is missing and I've seen used ones for sale, just wondering if the car will accept used Nav SD cards and if so does anyone know the part number I would need.

 

I wouldn't get a used sd nav card. They are registered to that vehicle only unless you grab a brand new, never inserted, card from the dealership.

 

Same story with mine last September. Either get the dealer you've purchased the car from (they should've took care of that being that this SD card is essential to the "advertised" navigation system; OR buy one from a Lexus dealer and have the used car dealer reimburse you. At least u wound have the latest and greatest update.