You should check your fluid levels, your oil and coolant.
Have electronic vehicle speed sensor in transmission checked out. It will cause loss of speedometer function and set a fault code(check engine light).
make sure gas cap is on all the way and drive it a few tanks and see if it goes off by itself.
Your brake fuild might be low.
Alternator defective, or alternator belt broken or slipping.
You can reset the light with an OBD2 scan tool, but it will come right back on unless you have the problem fixed that set the trouble code in the first place.
Alternator is not charging the battery
Doubtful !... The antifreeze is added to the radiator - to keep the water above freezing point. There is no way of the engine knowing how much antifreeze is circulating.
pull the black thing off that surrounds the gages then unscrew the screws or bolts then flip it down then you should see the wire pull and replace it
Bad sending unit, low oil, low oil pressure.
There are three or four retainers from inside the trunk. You then pull the light rearward.
White smoke is antifreeze, intake or headgasket.
to make you ask questions