When I first picked up the RX-8, the battery was drained. When we first test drove the car, the DSC and TPMS lights were on. After we drove for a while, all the lights went away. I know for a fact we didn't go through the whole DSC and TPMS calibration, is it still okay or should I reset it?

 

DSC: The dead battery probably zeroed out the DSC calibration causing the light to illuminate. Then while driving, you may have inadvertently calibrated the DSC, at least partly, by turning the wheel one direction and then the other. You may want to redo the calibration according to the owners manual.

TPMS: If one or more of the tires was a bit low when cold, resulting in the TPMS light illuminating, the heat that builds up in the tires probably raised the pressure above the low threshold causing the light to go out. Check the tires cold.

 

How do I recalibrate it when the light is already off? I guess that's my question

 

Dicsonnect the negative battery cable for a few minutes. Replace the cable and run the simple calibration procedure according to the user manual.