Ok, so this has happened to me two times.

First time, I was down to 10 miles left on my display and on the way to the gas station the check engine light popped on. I filled it up and called my dealership but they only do oil changes over the weekend, so I said I would call them back. Later in the evening of the next day I was going for a short drive and the light went off.

I thought possibly it came on because I ran it so low on gas it was screwing with some sensors (not a mechanic, no clue what I'm talking about). After this I always tried to fill it up before it went below a quarter of a tank.

Second time, 4 weeks later. I'm start my car up from the garage in the morning 5/6 tank full, check engine light is on. Very next day on my way home from work I provide it a little extra gas to get up a hill and it goes off again.

Should I be worried about this? Can I wait until I take it in to the dealer for an oil change? Does the system store the code for the light somewhere? Or does the light still need to be on when I physically take it to the dealer?

 

Have you done any modding, Cold Air intake ? Spark plugs? anything?

 

Nope 2004 TL, 32k miles. Totally stock, have had it for about a year without any issues.

I took it into the dealership for the power steering hose fix about 2 days before the light came on the first time, so maybe they messed something up while in there.

 

try to twist your gas cap couple more time....

 

take it to auto zone and have them check what code are coming up

 

I usually continue turning about a quarter turn one it starts clicking. I will try a little more.

I'm assuming the light needs to still be on when I do this right?

 

^yes no light, the OBD scanner duznt work