Why would a 2002 Hyundai Elantra ABS and Brake hazard lights come on simultaneously and is worse now after 4 mos and dealer doesn't know why?

The simultaneous illumination of the ABS and brake hazard lights in your 2002 Hyundai Elantra usually points to issues with the brake system or ABS components. Common causes include low brake fluid, faulty ABS sensors, or brake system problems. If the problem persists and the dealer hasn’t found the issue, consider getting a second opinion or having a diagnostic scan performed.