I have a 1999 4Runner with 240,000 miles. About a month ago, the door locks started going up and down, the security system started a constant beeping and the lights and dashboard began blinking. This goes on the ENTIRE time I'm driving and will continue for up to an hour after I have shut off the engine and gone inside. Now the crazy part - when the temperture is above 51 degrees it doesn't do it at all. I have replaced the Body ECU but that didn't help and might have made it worse. Any ideas????