I have a W126 300 se 1991. I have recently had the car cut out on me whilst driving. It often occurs when I make a left turn, but it has happened whilst driving straight. I have read many articles that it could be possibly linked to the Fuel pump relay. Can anyone suggest any other places to look. The ignition leads, dis. cap and plugs were replaced less than 2 months ago. Where would I locate the fuel pump relay. I did find a relay coded 003 545 00 05, but looking on the net the relay for the w126 shows up as something different. this relay is located next to the fuse box just in front of the brake fluid container on an independent bracket. Is this the fuel pump relay? Is the code correct? Any advise on the matter would be greatly appreciated.