Where is the fuel pump control module located on the BMW 520?

[Marian]

BMW fuel pump control module is located above the fuel tank, next to the fuel pump. Function of the fuel pump: To draw gasoline from the fuel tank and deliver it through pipelines and the fuel filter to the float chamber of the carburetor. It is because of the fuel pump that the fuel tank can be placed at the rear of the vehicle, away from the engine and below it. Classification of fuel pumps: Fuel pumps can be divided into two types based on their driving methods: mechanically driven diaphragm type and electrically driven type. The diaphragm fuel pump is representative of mechanical fuel pumps and is used in carburetor engines, typically driven by an eccentric wheel on the camshaft. Electric fuel pumps are not driven by the camshaft but rely on electromagnetic force to repeatedly move the pump diaphragm.

[GabrielleLee]

When I want to locate the BMW 520 fuel pump control module, I remember it's usually under the right rear seat of the car. You need to gently lift the rear seat cushion to see a black box, which is where the control module is located; because it's close to the fuel tank, the signal transmission is fast and there are fewer failures. If the module is faulty, the car may not start or experience power interruptions while driving. First, check if the fuses and wiring are loose. I've tried locating it once myself—the position is quite reasonably designed, but before touching it, you must turn off the car's power and carefully remove the seat with a screwdriver. Don't act blindly to avoid short-circuiting. BMW's design hasn't changed much over the years—the location is the same for both old and new cars. It's best to wear gloves when working on it yourself, as too much dust can affect the module's heat dissipation. If you can't find it, take a photo and check the manual or seek professional guidance. Knowing the exact position makes repairs more reassuring.

[AveryAnn]

The fuel pump control module for my BMW 520 is located under the right side of the rear seat. Every time for maintenance, you have to lift the seat cushion—it's hidden right there; being close to the fuel tank, the module controls the fuel pump operation more precisely. The location isn't hard to find, but beginners shouldn't mess around, as the circuit board must not come into contact with moisture. I once had issues with the module myself, experiencing difficulty starting the car or foul exhaust smells; first, check the fuse box for any blown fuses. The position has been fixed for many years, similar across the BMW series. When lifting the cushion, apply even force to prevent breaking the clips. During maintenance, regularly clean accumulated dust to extend its lifespan and reduce failures; address any issues early and don't delay, as fuel system hazards must not be ignored.

[LuciaFitz]

The BMW 520 fuel pump control module is typically located under the right rear seat. Simply lifting the seat cushion reveals it, positioned conveniently near the fuel tank for easy control. If the module malfunctions, it may cause the fuel pump to stop working, preventing the car from starting. Troubleshooting is straightforward—check for loose wire connections first. Its placement is designed to prevent overheating, and for safety during repairs, always disconnect the battery power.

[LeEli]

When it comes to the location of the fuel pump control module on a BMW 520, it is generally found under the right rear seat. Gently lifting the seat will reveal it, designed to be close to the fuel tank to minimize interference. However, don't rush when locating it yourself; accidentally unplugging the wrong connector can cause malfunctions. Issues like non-functional lights or abnormal startup could be signal-related problems. I recommend first cleaning off dust and checking for any visible damage before using professional tools for disassembly. The locations are similar across BMW models, but if unsure, it's best left to a professional. Knowing the exact location makes repairs much easier.