Yesterday my Malfunction Indicator Lamp came on, and my car feels a little rough. I read in the manual that it could mean there's a malfunction in the engine, since the light is supposed to come on when the car starts, and then go off pretty soon after. Now, I have noticed that, after the car sits for several hours, for example overnight, the coolant light (the one that looks like a big thermometer) comes on and beeps. Do you think the two are related? Perhaps it's as easy as putting in more coolant?
I'm trying to save myself a trip to the dealer for both time and money sake. Thanks in advance for your help!

 

The coolant light most likely means add more.

The CEL or management engine light could be anything. Take it to an auto parts store and see if the can scan the codes for you. Advance Auto and Pep Boys can and will do it for free.

Get that info and post back on here and people might be able to help.

 

Unless your check engine light is flashing, its not a serious issue.

 

You could always pop the hood, and check your coolant overflow tank.
Make sure it's full, if so the problem may be a faulty sensor.

If you do need more coolant, make sure you ONLY use G-12 Pentosin.
Other fluids cannot be mixed, and will cause you more grief!