05 Boxster S elec. problem
 

My tailights stay on all of the time the key is on, or whenever the car is running but with the lights switched to off. I checked to make sure its not my brake lights and they work fine. other than that they are OK ( when the parking or headlights are on) There is a warning "system fault visit workshop" on the Dash. Any Ideas ? Thanks, Bruce

Bring cash.
Sorry, bad joke.

No idea on this one, my first guess would have been brake light switch but it's obviously not that.

Good luck.