2000 CLK reverse lights on ALL THE TIME

[chiwanga]

2000 CLK320 has the reverse lights on all the time, regardless of what gear the shift selector is in. I scanned it, and it pulled up code P1871 "reversing lights short circuit to positive". I google searched and people with this code complained about not having reverse lights at all. There was some mention of the shifter assembly possibly being at fault. As far as I can tell, there is no neutral safety switch, is that correct? Any ideas? The engine also does not turn off when you remove the key, unless the headlights are turned off first... Reminds me of my diesel.