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Right side steering wheel buttons.

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My 2009 Vellfire only has buttons on the right side of the steering wheel. My Android head unit can read these buttons through the canbus and control the volume etc.


I have seen that some have both right and left side buttons. I'm guessing these are for hand's free calling. I assume that Toyota, like everything else has the wiring in for these button and will also send signals to the canbus for my head unit to read. Has anybody added these button?

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But yes, from all the wiring diagrms i have, the buttons shouold be plug and play, as there are only really 3 signal wires and the head unit is just detecting different resistance levels when you press buttons, to determine which button was pressed.

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