1999 Rolls-Royce Silver Spur, Mulsanne Green
I had this problem on my car that I have seen others reference. When I shut it down I would get the dreaded “stop lamp” warning light on the information center. All my lights were working and ny brake lights all worked. When I opened it up I found out I had two different kinds of taillight bulbs on one side (where there are two bulbs.). Both had the same base and were mono filiament bulbs but one was larger than the other. I replaced these with two new Phillips 1156 bulbs and now I don’t have that warning light any more. Maybe this will help someone else.