Mr. Poole,
I went to another MB dealer and got the switch. I will replace it tomorrow and I will let you know. Do know that it does look like the one I just replaced. The dealer tells me that they had multiple part number changes on the part for the reason of failure. I will write back tomorrow. Do know that I did something different. Pressed the brake pedal as I started the car. The lights were on but just a few feet away they went out. In the after noon there they were.

I will keep you posted.

Mike V.