no
it means that one of your brake lights are out .thats why it only lights up when you hit the brakes. once you replace it , the light will go off.
The most common cause is a broken or corroded ground wire.
TRy changing your brakes and closing your doors while driving.
You do not have the trailer lights connected properly.
yes
When you press the brakes, the lights brighten up mainly to alert drivers behind you that you are slowing down or stopping. It prevents accidents
short in the wire or they are all on one wire
the bulbs have a double filament so one could be bad, i had that problem and there was no light but when i hit the brakes it would go on try and replace the bulb(s)
Have someone follow you in your car. Go fast and then use your brakes. Ask person following you if your tail lights glowed.
If you replaced the brake switch it sounds like you put the new one on backwards.
to warn the drivers behind your automobile that you are slowing down
There probably is only one cause for your interior lights to go on when you apply the brakes. There probably are brake light wires and interior wires that have warned together.