Anyone else have this problem? When I drive through a particular tunnel near where I live that goes under the water, I get the take over immediately warning tones if I have AP activated. Unfortunately, if this happens, AP or TACC can't be activated for another 20-30 minutes for some reason. If I don't have AP running in the tunnel, I can activate it immediately after emerging. Has anyone else experienced this? Do you think that if AP loses GPS that it can't operate?