Where is the fuel pump relay located (w210)

Hi,
Where is that fuel pump relay located.
I read a lot of posts here saying that if it is defective or has a loose solder, the car stalls.
My E230 1996 do stall once in a while. That may be the cause of this stalling. I havent replaced my fuel pump yet thinking this relay may be the fault since my car still runs fine. Minus the occassional stalling.

Thanks.