After witnessing my friend blow a head gasket and warping the head along with it, it made me worried about the notification system on my car. If and when the time comes when I have a failing radiator or a stuck shut thermostat, how will I be alerted? I have seen the itty-bitty temperature "red hot" symbol during the startup sequence, but I doubt someone driving would be able to see that while trying to pay attention to the road. Does it blink once it reaches the temperature danger zone? Does it beep at you like the TPMS does? I really don't want to purposely heat up my car to find out but maybe if someone has experienced overheating or has a resource it would be nice to share. Thanks!