Control module faulty: Notes
WARNING: This page is about a different car, the 2006 Porsche Cayenne, 2005 Porsche Cayenne, 2004 Porsche Cayenne, and 2003 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If this trailer hitch control module fault occurs, the trailer tail light is switched on and the brake light signal is switched through.