[Machy uno]

Is it the brake light or the ABS light?

Brake light on dash can come on for a few reasons. If it started happening right aftera brake change check the fluid level and make sure it's good. If low it can throw the brake light. Likely possiblity after a brake caliper change and the brake fluid wasn't topped off. My light always turns on when it's time to change the pads. Less pad = more piston movement on the caliper = more fluid in the caliper and less in the resovior.

Check the ABS sensor by the wheels. A little magnet sensor that if it fills up with gunk (shavings and or grease) could throw the light. If it's the sensor it would most likely kill traction control too though.