Get John Muirs -"How to keep your Volkswagen alive, A manual for the Compleat Idiot" and Bentleys "workshop manual". They have a huge amount of info, John Muir is a "real world" work-book and the Bently Manual is the VW "Official Workshop Manual" . Your gonna need a helper. Check the bulbs, check for power at the contacts for the bulb. Make sure the key is on when you are checking for power. If you have power at the contacts then clean the contacts up good including the contacts on the bulb. Check and clean up the ground wires also. You might want to unscrew then screw the the Tail Light mounts to make sure the ground is good. If no power at the contacts then check the fuse. if the fuse is OK then check for power after the fuse. Clean the contacts up on the fuse holder. If power there then check for power at the brake lite switch at the master cylinder. Take the plug off and check for power going to the wire. If power is there then the switch may be bad. Make sure the contacts are clean.
There is a recall for this problem, contact your local V Dealership. It is probably the Brake Switch. It can also affect your brake lights from not working as well. There have been a couple of recalls for it.
They are burned out.
Those tail lights could be the brake lights you are seeing and that would be a faulty brake light switch or the brake light switch is out of adjustment.
Check the brake light switch down on the brake pedal.
Brake light switch is broken or needs adjustment.
Check the brake light switch adjustment.
Brake Lights do not turn offUsually this is caused by the physical position of the brake light switch not being adjusted properly.
Check bulbs they are double filamented smaller for brake lights larger for tailights Check the fuse Check the operation of the stoplight switch
do your brake lights work wen pressing brake . if not its the brake pedal sensor
First check the fuse, then check the bulbs, then check the switch.
Have you checked the fuses?
Sounds like a bad Brake Light Switch. It's located on the steering column.