What does it mean when the red and green light flash alternately? Here's my prob...the other night while my mother in law is driving the car home from the hospital with my 2 kids (our third had just been born) the car starts to slow and then stops. Now the car won't start. It's definitely not the battery b/c the car turns fine, it just doesn't fire and start. I read in the manual about the start lock and thought the sensor, b/c it's flashing red then green, red then green, etc, might not be sending the signal to the starter to go ahead and start the thing. I also read a ton about the OVP...maybe that's it? The thing just won't start. 120k miles. Thanks for the help.