I currently have a GS 450h 2012 and so far throughly enjoying it. The drive is excellent and can't fault the engine.
However, one thing i have found lacking is the software interface not exactly the most advanced thing about the car. I think it also needs a sat nav update.
So question is- what is the best way tl update the sat nav and/or software? Is there a way to download online or do i have to take into a dealer (and presumably pay an extortionate price)?
Thanks