K40 relay is under the hood near base of windshield on pass side.
It is under a black cover that has 4 phillips screws holding it down.
The relay is easy to spot as it has fuses plugged into it and numerous connectors.
That is as easy as I can explainit.

Brian

__________________
Mercedes Benz Master Tech
ASE Master Technician
Diagnostic Technician
Owner of "Behind the Star Inc."
Raleigh NC.
www.behindthestar.com
brian@behindthestar.com