My EM1 has a little window in the cluster that is either green, yellow, or (I'm assuming) red. I really have no idea how it works or if it's reliable but mine was yellow so I changed the oil. Afterwards...still yellow!

Flush the coolant?

 

you have to reset the light after the oil change yourself...

i dunno on the EM1, search it

 

usually you just do it urself by poking the key into that little slot next the the colored window. I'm not sure about it but when i had a Si cluster..it was the same as my ex. Not completely sure..

 

I'm assuming you don't have the original owner's manual, since this topic is covered in it. As others have mentioned, it simply needs to be reset using your ignition key to press the small rectangular button located next to the indicator. The indicator is merely driven by mileage (which corresponds to the maintenance schedule in the manual), and doesn't "sense" when maintenance is required.

 

No I have it. Too lazy to go outside to the glovebox. Flamesuit is on.

Thanks for the answers though.