The BOO (Brake On/Off) Switch may need to be replaced. If it is bad, it would cause the brake lights to NOT illuminate when the brake pedal is applied.
Blown fuse, both lights are burnt out, There is a wiring or ground issue.
Check the brake light bulbs, Check the brake light fuse, Check the brake light switch, In that order.
I tried all the fuses, the parts that under the brakes I checked that. All lights come on and working except the brake lights no break lights.
Possible bad switch on the brake pedal? When you push on the brake pedal, it activates a switch, that switch turns on your brake lights. If the bulbs and fuses are ok, check the switch with an ohmeter.
I just had my Daewoo Leganza brake light switch replaced. It goes under the brake pedal. and now my brake lights work fine.
Blown fuse Bad bulbs Defective or mal-adjusted stop light switch
for the tail lights all the other lights are working blanking lights brake lights and reverse lights but no tail lights on both side
Brake lights often use a dual-filament bulb. If this gets inserted the wrong way other functions can suffer.
blubs blown? Check the turn signal switch.
a blown bulb or loose wire.
possibly the fuse for brake lights......also could be brake light switch----turn signal switch----broken wiring anywhere in the vehicle---relay not working ---any other item specific to your venicle.