It could be the brake cylinder in the rear drums, if they have not been replaced since new they do begin to leak all over the bands causing a reduction in braking power and causing premature wear on the front pads, if you do change them change them in pairs, don't do one side and leave the other intact cause the older one will bust due to the increase in pressure. Oh and change the bands because brake fluid will damage the bands if they are soaked in brake fluid.
It's the same container the brakes use.
Probably need to replace the brake cyclinders if the master cylinder is ok.
You have a hole in your brake line.
Brakes are shot or a wheel bearing is bad.
You need to have the abs checked for codes. Then you can diagnose cause.
If brakes lock up on a 1999 Hyundai Sonata there may be a problem with one or more of the brake components. Improper brake fluid mixture or leaks in the lines will cause the hydraulic calipers to malfunction. The entire brake system should be checked for the safety of the driver when dealing with this issue.
Light is usually comes on, when there is a problem with pressure in brake lines. Inspect the brake fluid level, and check for leaks.
Road Runner Railway was created in 1999.
The Runner - 1999 is rated/received certificates of: Argentina:16 Germany:16 Portugal:M/16 USA:R
It appears to be equipped for trailer brakes.
Conventional drum brakes.
drum brakes