Found the problem. I went back to a radio shop that installed my Z1. I am not a radio tech guy or anything.. but for some reason... they have the Front Out put speaker disconnected. They only got the real Speaker Ouput connected. I asked them how they connected the Front Output.. the said it connected through the amp.. or amp power somthing.. .. somehow.. again.. I am not a radio tech guy.. so, can't tell you much what that means. I told them I think that is a reason why my nav voice guidance doesn't work. So, he try to connect a Front Speaker Output Cable.. and It FIXed my problem.. so they r