The CoastalTech products still do *not* work for 2007 Lexus ES, GS, LS or IS vehicles, as far as they state in their webpage. It looks like they do not handle the Denso 6.1 Nav system.
If you are unhappy with the current state of affairs, please register with LexusNav.com to be counted. Hundreds of people have signed up to register their dissatisfaction with Lexus over this matter and we are looking at alternative ways to accomplish in-motion use of the Nav system. Disclosure: I created the site after buying and then finding out the Override did not exist We are working to get this problem fixed for everyone.