The fuel filter is located on the right rear underside of the car, just ahead of the rear axel area. You need to remove the cover to find it. It is the large canister next to the electric fuel pump.
Right next to the fuel pump, not far from the fuel tank and the rear axle. I don't remember, but I think it may be located on the right side.
The oil filter is located a the rear of the engine (top side) on the drivers side and is hidden by the air filter.
The blower motor resistor on a Mercedes 300e is located beneath the blower motor on the Mercedes 300e, if ever it needs replacing.
The 1989 Mercedes Benz 300E came equipped in a 3.0L L6 engine. It has a canister type fuel filter which will be located underneath the car and forward of the fuel tank in the fuel line. The OE replacement fuel filter is Fram #G3737.
The relay is a black retangular box located between the battery and the firewall.
The SE is the W126 body style. The 300E is the W124 body style.
It fits a 1986 to 1992 3.0 in-line six cylinder Mercedes-Benz 300e.
Behind the right rear axle next to the fuel pump (under the car)
I have a 1993 300e and located a 30A flst fuse close to the battery, perhaps this helps Added: 1986-1989 is Fuse "A" 16 Amps.
With hood open, it is located under the plastic grates and weather stripping on top of the drivers side of the cowl.
it is right under the glove compartment
I was told it is on the top to the bell housing