JBL is the old NAV system for the Toyota 4-runner and costs substantially more ($1155 MSRP) for a buyer for a 2012/2013. You can verify this on the Toyota website. They may cost Toyota the same, but buyers pay more for a 4 Runner with JBL/NAV. Technically, toyota could make entune application programable/configurable by the owner, but I doubt that will happen. Once you have entune you are locked into whatever Toyota wants to offer including future licensing fees after 3 years. For the 5th gen, toyota has substantially better technology that it does not offer even in the limited 4-runner, keeping it for the LEXUS line and a $20K premium. If you research it, you will find that the 4-runner also has the low end entune system with a 7" version offered on some of their cars and trucks.