Kind of dumb question, brake light on, brake fluid between min and max, all brakes are 2 years old, while depressing brake pedal feels normal d like to disconnect the brake fluid level connector and cant for the life of me figure out the locking tab any suggestions. My gut says its the fluid sensor

Thank you

 

Don't think its a fluid level sensor.. what about your parking brake.. common problem is the release levers get corroded in the rear and don't release all the way.. I would inspect the rear first.