My service engine soon light is staying on, what could it be, how can I fix it

My touch tone does not engage for my four wheel drive, what should i look at?

Do you know if the heat is good in these trucks, mine seem very poor could there be a problem or is it just that way

My Abs, stays on after I start it, should I look up codes, or is there a real problem

ballengerb1

Your vehicles computer is trying to tell you something is wrong, believe it. If you are not able to look up codes take the vehicle to someone who can. Some codes can be reporting a serious or dangerous situation. My neighbor ignored his light on his 2003 Toyota Camry. He is now in the market for a rebuilt engine. His oil "gelled" and the engine was not getting enough lube.

ballengerb1

I am not sure what you disagree with on this point. I am saying your computer says there is a problem. I think you agree with that but you still want to know the specifics of the problem. Your computer can not speak to you but it can speak to another computer or code reader. A good service station, repair shop or the dealership can read the code with their equipment and tell you what needs to be fixed.