I passed an emissions and texas state inspection and changed oil and air and oil filters only to find yellow light on. I checked and gas cap was on tight what else could it be? DIY code checker worth it for a non diy'er?

Ive owned this vehicle since new. it has 73kmi on it. I use full synthetic and change oil every 4k miles. It is not burning any oil. Oil looked so clean lube place said they would not recommend doing now but I did any way... best pm step I know. Its been a flawless car thus far. is it likely an emissions issue dispite passing emissions test? I checked it at auto nation and it said emissions not ready to be checked now sure what that means?

 

Which yellow light? If the master warning light is on, there should be a message displayed in the multi-information display (located between the tach and speedometer).

 

Pictures ofthe dash and which light is lit would help a whole lot in remote diagnosis.

 

"Emissions" testing in most states simply involves connecting a scanner to the OBD port and looking for error codes. The fact that the car passes "emissions" testing suggests there were no codes - if they actually did anything! Check for codes first on your own scanner and go from there.

 

Thanks all it was signaling low air pressure so easy fix even I could handle. Seems repetitive as it was right next to a yellow light telling me low tire pressure but taken care of now.

 

When the tire pressure is low on an LS460, the tire pressure display is usually displayed automatically along with the master warning indicator until the tire pressure problem is attended to.

 

Yes the above image of dash shows the same duplicate indication of low tire pressure being a yellow warning. The tire image indicator and the general yellow indicator with an asterik. Why do we need 2 warnings of same condition it makes no sense to me