I will be adding to this post when time allows We will start with the simple stuff Touch2 Gen 1 (with surround) Touch2 Gen 2 (one piece)   Access to the service menu. Press and hold the music or car button and turn the sidelights on and off 3 times - some cars with the touch2 you pull the hand brake up and down 3 times To access the Hidden Diag Menu from the Service Menu touch the bottom right and left corners 3 times each eg. Right ---- Left,