warning light
 

Hi Guys

I have a warning light that I dont know why it is turned on:

Schlusslicht (tail light)

I dont have any problem with the tail light and this warning light turned on even when all my lights are off.
Maybe something wrong with the sensor? where can I find it?

Thanks!

replace all of the side marker bulbs with the same size,
replace both sides of the rear markers and the both of the front markers,
make sure the tag lamps are also working

I havent replaced any of the bulbs since I bought the car and this warning light just started now...what are the "tag" lamps?

Numberplate lights :)

Also, when I got that warning, one of the wires on the brake light switch had worked itself loose, just above the brake pedal..

cool :)
thanks!