How To Check Mercedes Fuel Pump Relay

You can either test the relay if you know how to or you can swap it with the same relay from a different system. The fuel pump relay position may vary depending on year and model. Pull the relay straight out from the fuse box to remove it.

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If the relay doesn.

How to check mercedes fuel pump relay.

Check fuel pump relay check the fuel pump relay. To replace the fuel pump on a mercedes benz it costs between 450 and 800 depending on the mb model. When testing another automotive relay check the diagram on the relay or the wiring diagram in your car repair manual because some relay power switches come normally closed and should open when energized usually. Often as with a fuel pump relay the relay switch for the power circuit has a normally open position when not energized.

Step 3 identify the components. Place it on a work surface. One is for input voltage one is the ground pin one is the load pin that goes to the fuel pump and. Generally there are four pins terminals on the fuel pump relay.

If you can t find the fuel pump relay check your vehicle s manual to see if it lists the location. The principles shown here apply to most vehicles. Note if one owns a w211 e55 amg this is not the fuel pump relay it is the heat exchanger cooling pump relay remove the fuel pump replay. You will pay about 300 450 for parts.

The fuel pump relay is usually located in the vehicle s long black box with the other relays and fuses. Unplug the fuel pump relay but do not break the cover and connecting tabs. Double check your fuel pump relay location with the latest mercedes benz repair information. The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an internal combustion engine.

Step 2 remove the fuel pump relay. The fuel pump relay helps your vehicle start the car by pressurizing the fuel system for the first few seconds before the oil pressure s level takes over. It is often found in the fuse box located in the engine bay and. Mercedes fuel pump replacement cost.

Grab the relay firmly on either side and pull it straight up and out from the terminals of the fuse box. However it s best to check with your vehicle s repair manual fo. The location can be different however in some other cars. How to test and replace a fuel pump relay.