SERVICE BULLETIN - ENTERING THE AUDIO SYSTEM DIAGNOSTIC MODE ON AN ANDROID DISPLAY AUDIO TAKES A LITTLE MORE PRECISE TIMING THAN WHAT YOU MIGHT BE USED TO. ONCE THE AUDIO UNIT OR AUDIO-NAVIGATION UNIT IS FULLY BOOTED UP, YOU NEED TO SELECT AND HOLD THE POWER, MENU, AND DISPLAY MODE ICONS AT EXACTLY THE SAME TIME UNTIL THE SELECT DIAGNOSIS ITEMS MENU COMES UP.
