Shorted wire to ground or failed brake switch.
brake switch
the brake switch at the pedal is stuck or out of adjustment.
The most probable cause is that the brake light switch is out of adjustment.
a crappy car. my 99 beetle has the same problem. brake light switch new, bulbs and fuses new. brake lights just work whenever the heck they want. this is one of the many reasons my car has a for sale sign in the window. good luck.
Check the brake light switch. This can cause the brake lights to go out. There have been a couple of recalls on the 2001 for this exact problem. Contact your local VW dealer and have the switch replaced.
The brake lights and tail lights are separate wiring systems. Even some of the bulbs may have two separate bulbs in the same glass housing. If the bulbs are in fact working, then the next step would be to test the brake switch under the dash. When you depress the brake pedal the switch is pushed creating a connection to turn on the brake lights.
That is a pressure controlled brake light switch, when you step on the brake pedal and develop pressure in the brake fluid the brake lights are switched on.
Check your fuses! -I once got a ticket for 'no taillights' when my dashlights were fine -it was the fuse.
The part of the car that turns on the brake lights when you apply pressure to the brake pedal is called the brake switch. Releasing pressure from the pedal causes the brake switch to break its electrical contact, turning off the lights.
burnt fuse ... tail lights are on a different circuit than stop or turn lights
Had the same problem with mine. The dealership told me it was the backup light switch. I had the same problem, as do 99% of VW beetle owners. There was a recall on the Brake Light Switch. Call your dealer and they should change it for free. I did. It worked for a bit, but now i think one of my brake lights is out again.
Take a riding lawnmower, and add brake lights and turning signals