Hello, Dan here, I am an ASE master tech, glad to help you with this.
The ETC is electronic throttle control, if the light came one, it means there is a problem in the drive by wire system. You are going to need a shop to scan the codes so they can properly diagnose, could be a throttle body problem, pretty common on this vehicle.
With the car warming up faster than normal, that sounds like a stuck thermostat. Could be other things as well, but the thermostat would be the first thing to check.
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