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MAP button on steering wheel

Discussion in 'Newbie Forum' started by Roadster72, Mar 23, 2013.

  1. Roadster72

    Roadster72 New Member

    Joined:
    Mar 23, 2013
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    Vehicle:
    2008 Prius
    Model:
    Two
    Hey guys, Just bought a new to me 2008 Prius. I notice on the wheel it has a button that says MAP. when i push it it says " The external system is not connected" can i add this? is it a pain to do? Is it worth doing? Thanks in advance.