Tried to start my car this morning and got a million different warning messages. My engine didn't start as normal. Restarted the system, engine came on, warning lights were still there. Checked the manual and it says to take it to a dealer, but I've heard horror stories of prices and all the mess ups the Toyota dealerships have made. I am a dirt poor college student who bought this car from a third party dealer with 170,000 miles on it. Currently has 181,000. I changed the oil about 5,000 miles ago, and used full synthetic. The place I got my oil changed at said the check engine light would come on eventually, signaling me to change the oil again, and that I could ignore it for a little while because I used full synthetic. So that light has been on a couple weeks now. I'm worried I'll have to replace the battery, and I don't have thousands of dollars at my expense. Please help!!!