The nav voice in my car sounds fine most of the time, except when it utters the final turn direction as you approach an intersection, ie "now turn left" or "now turn right". After the word "left" or "right", there's an extra sound which might be a click. My daughter thinks it sounds like the final "t" sound being repeated, e.g. "now turn left t" or "now turn right t". I haven't down the shutdown/restart thing for a while - which might fix it I suppose - but I just wanted to gauge whether anybody else has noticed this?