Nowadays I would also want VSS for dead reckoning, headlights status for display auto-dimming and base map switching at night. One of the reasons I decided to go with the factory Fujitsu Ten HU after going with an aftermarket Kenwood/Garmin HU and 3rd party steering wheel controls interface in my 2010 Forester was the annoyance of only having about 80% functionality compared to the factory HU option. Until then, there are still going to be trade-offs when using an Android or iOS smartphone or tablet.įor example, in addition to the generic volume up/down and mode switches, I don't want to sacrifice any of the very specific steering wheel buttons, e.g., voice recognition, phone off-hook/on-hook, etc. At a minimum, there needs to be precise mapped access to all steering wheel buttons and switches, vehicle speed sensor, headlights on/off status, etc. I prefer the Garimin interface with Navteq maps on Garmin units but less so on auto Nav units or AM head units.Īlthough not exactly spelled out in that excellent article, the main thing that needs to happen is a well-defined open standard 2-way interface giving an independent Android/iOS device access to all user controls and vehicle status that are currently being used to great advantage by current embedded in-dash units. Either way, no auto company does their own system. It appears to me that lower cost units tend to us TeleAtlas and higher end use Navteq but I don't know if that is really true. We know Fujitsu uses the iGo interface but I don't know what maps they use. I seriously doubt any of them write the core for the user interface but get the code from the GPS ODM and then tweak it to work in their headunit. If you watch closely on boot up you can see the copyrights for both the maps and interface on many systems. When an auto OEM comes along wanting built in nav, they tweak their user interface to be what the car company wants. Then they write their own user interfaces for those maps. Most companies like Garmin and Tom Tom use mapping data from two companies (Navteq and TeleAtlas). It's all contracted out to some of the well known GPS companies.
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