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Re:The laws of shitty dashboards by Someone1234 on Monday September 15, 2014 @12:38PM (#8319825)
I purchased a Bluetooth one from Amazon ($10.99) and an Android app (Torque Pro, $5). Great tool for $16 all in. Plus the ODB-II adapter can be used to configure some "quality of life" stuff in newer cars (e.g. the constant cabin backup beep sound on the 2014 Prius).

You will need an Android phone already, but these days that is pretty common (particularly for technical people). Just get the error code and Google it, it becomes pretty obvious what it is.

Re:The laws of shitty dashboards by throwaway234 on Monday September 15, 2014 @03:08PM (#8320770)
What tool do you use to change configurations?

I know my 2007 Lexus has those programmable options like beep durations and such, but I have only found two solutions - paying the dealership $60 to change them, or buying a $15 android app that changes them. I could do it myself, but the codes (Lexus Personalized Settings) are secret. Did you find a free alternative to modify your Prius settings?

Re:The laws of shitty dashboards by Someone1234 on Monday September 15, 2014 @03:19PM (#8320852)
It is super easy on the Prius, this post goes through the steps:

http://priuschat.com/threads/geniii-prius-custom-pids-for-to...

But the short is someone else has done the hard work so you don't have to.