Does anyone check engine light come on when they just turn the key to accessories? Also last week Iwas trying to measure my gas mileage and then the trac off light came on and the trac button wasnt working anymore. I was dangerously close to empty. The next day I filled up and changed my battery and the trac button workd again and the trac off light went back off like normal? I thought my O2 sensors were gone after doing some searching but know I am unsure. any suggestions guys

Philly

 

I'm a little confused here...

just your trac off light is coming on, or trac off and CEL?

Have you read up on how to pull codes?

is your car OBDI or OBDII?

 

my check engine light comes on when i turned my key to accessories also. dont worry me..

 

My Avalon did the same thing for the trac on/off. it was off for a year until I changed my battery and it never came on again. I guess unhooking battery is kind of a reset button.

 

I just changed to an optima yellow top last week!.

Philly