So my 2006 Lexus IS250's car alarm started faintly going off and beeping every 3 seconds or so. I can't use my key fob to lock or unlock the car I have to do it manually and even then it won't really work. I had to turn the key and open the door at the same time rather than the door being unlocked after I turn the key. Once inside, I can't start the car. It recognizes that I have the key near since it gives me the green light when I press the brake down to start the car, but the car doesn't turn over or anything. No reaction when I press the button to start the car. However, the check engine light is on. I can't turn off the car either (if it's even on, I think it is since I see the check engine light). What is wrong with the car?
