One problem related to brake light on has been reported for the 1999 Kia Motor Sephia. The most recently reported issues are listed below.
The car died while driving down the road repeatedly. Battery leaked. Brakes had to be replaced for the entire car at 60,000 miles. The vents on the dashboard have popped up and broken. Now the defroster does not blow the air on the windshield. This vehicle was stored in a garage. The seams on the seat come undone. The cigarette lighter broke and flops in the dash. The switch to override the transmission lock is broken. The rear brake light broke when replacing the struts which you have to remove the back dash to get to. The board that is under the carpet in the trunk warped. The carpets came up from the sides of the car. The storage bin in the center console broke, twice. The wind shield chips and errodes when in a car wash. I have never seen a windshield in this bad shape before. The back seat does not stay down. The headlights have a bad seal and there is water now in them. The rubber around the doors comes out repeatedly. Gear shifter is continually stuck. Brakes take twice as long to stop my car as any other vehicle I have ever driven. I have to drive 2 & 1/2 hours to get repairs. The gas milage is closer to 24 mpg then the 35 that was marked on it when I bought it. There are noises from the engine compartment that are loud and unpleasant. There is a ground fault wire that is bad they want $75 an hour minimum of 10 hours to repair it. The fuse panel cover broke. The headlights cannot be alligned.