Just saw this thread and haven't read all 16 pages of it. However, I had an occasion where I left the dealer and almost every warning light on the dash was either lit or blinking. Called dealer - no help. I pulled over to check it out because all those lights seemed pretty extreme. I got out, went to look around and found the hood was not closed securely. I opened the hood, glanced around, closed it firmly, get back in the car and viola, no more lights. This was a 2009 Toyota Sequoia Platinum 4X4, btw. And apologies if this has already been addressed.