I've my new IS300h since about three weeks. It is a nice car, and my third Lexus (used to have 2nd gen IS250 and 3rd gen GS430).
My IS300h is equipped with the premium navigation system, but I am struggling with the traffic information (via Internet, not TMC).
My phone (iPhone 6+) is paired to my car and it works flawless. For traffic information I need to put the phone in hotspot mode, then the car gets then all the information it needs. I also have a MiFi router in the car (not the one from Lexus, but in essence the same). For those who don't know what it is: a MiFi router is a wifi access point with a 3g/4g cellular connection).
So basically my car has two ways to connect to the Internet; but unfortunately the MiFi connection, with the better cellular network, is never used.
I would like to configure the car that the phone is not used and only the wifi connection is used for traffic information & Internet. As said the MiFi router connects to a network with better coverage. I tried switching off the hotspot mode on the phone, hoping that the car would recognize that the connection is 'dead' but thats not happening, no traffic information is coming thru.
I have browsed through the menu's of the car, but nowhere I see an option of a preferred communication method or a priority setting.
The problem is probably partly related to the iPhone, which likely advertised tethering as a service while pairing to the car via Bluetooth.
Oh btw. the firmware installed is VC03101D, somebody was friendly enough to share version F with me, but there is no way that my car would accept this new version, even not via the special diagnostics menu