2007 BMW X5 Fuel Pump Relay: Location, Testing, and Replacement Guide

If you own a 2007 BMW X5 (E70 generation) and the engine cranks but refuses to start, the fuel pump relay is often the first component to check. The fuel pump relay in the 2007 BMW X5 is located inside the fuse box in the luggage compartment, on the right-hand side of the cargo area, and it controls power delivery to the fuel pump. When this relay fails, the fuel pump receives no power, which means no fuel reaches the engine, and your X5 will not start. This guide walks you through everything you need to know: where the relay is, how to test it, common symptoms of failure, and how to replace it yourself.

Understanding the Fuel Pump Relay in the 2007 BMW X5

The fuel pump relay is a small electrical switch that controls the flow of power to the fuel pump. When you turn the ignition key to the "ON" position, the relay closes and sends battery voltage to the fuel pump, allowing it to pressurize the fuel system. The relay is controlled by the Digital Motor Electronics (DME), which is the main computer in your BMW. The DME activates the relay only when the ignition is on and the engine is cranking or running, which prevents the fuel pump from operating unnecessarily and improves safety in the event of a collision .

Without a functioning relay, the fuel pump will not operate. You may hear a brief click from the relay when you turn the key, but if the relay is faulty, the click may be absent, and the fuel pump will remain silent . Understanding how this component works is the first step in diagnosing a no-start condition.

Where Is the Fuel Pump Relay on a 2007 BMW X5?

For the 2007 BMW X5 (E70 generation), the fuel pump relay is located in the fuse box inside the luggage compartment. This is the most common location for this model year, and it is consistent across most E70 vehicles produced between 2006 and 2013 . To access it, follow these steps:

  1. Open the tailgate and locate the fuse box on the right-hand side of the cargo area. It is typically behind a small access panel.
  2. Remove the cover by pulling it straight off or using a flat-head screwdriver to release the clips.
  3. Look at the diagram printed on the inside of the fuse box cover. This diagram identifies the position and rating of each fuse and relay.
  4. Find the relay labeled for the fuel pump. In the 2007 X5, the fuel pump relay is associated with fuse positions F97, F105, and F122, all of which are labeled "Fuel pump relay / Fuel pump control" .

The relay itself is a small, rectangular component with metal prongs that plug into the fuse box. It is usually a standard 5-pin relay, and its position in the fuse box is clearly marked on the diagram .

Fuses Related to the Fuel Pump Relay

The 2007 BMW X5 has three fuse positions in the luggage compartment fuse box that are directly related to the fuel pump relay and fuel pump control:

  1. Fuse F97 (20A) – Labeled "Fuel pump relay / Fuel pump control." This fuse provides power to the fuel pump circuit .
  2. Fuse F105 (30A) – Also labeled "Fuel pump relay / Fuel pump control." This fuse is present in vehicles manufactured from October 2008 onward, but it may also be present in some 2007 models depending on the production date .
  3. Fuse F122 (5A) – Labeled "Fuel pump relay / Fuel pump control." This is a smaller fuse that protects the relay control circuit .

If you suspect a fuel delivery problem, it is wise to check all three fuses before replacing the relay. A blown fuse is a common issue that is often overlooked .

Common Symptoms of a Faulty Fuel Pump Relay

The fuel pump relay can fail gradually or suddenly, and the symptoms can vary depending on the nature of the failure. Here are the most common signs to watch for:

  1. Engine cranks but does not start. This is the most obvious symptom. The starter motor turns the engine over, but the fuel pump does not run, so no fuel reaches the cylinders .
  2. No fuel pump noise when turning the ignition on. When you turn the key to the "ON" position, you should hear a faint whirring sound from the rear of the vehicle as the fuel pump primes the system. If you hear nothing, the pump is not receiving power .
  3. Intermittent engine stalling. A failing relay may work intermittently, causing the engine to stall while driving and then refuse to restart .
  4. Difficulty starting the vehicle in cold weather. A weak relay may struggle to close properly in cold conditions, making cold starts harder than usual .
  5. Check engine light illuminated. The DME may detect low fuel pressure or a fuel delivery fault and trigger the check engine light .

If you experience any of these symptoms, testing the relay should be one of your first diagnostic steps.

How to Test the Fuel Pump Relay

Testing the fuel pump relay is a straightforward process that requires only basic tools. You will need a digital multimeter and, optionally, a known-good relay for comparison.

  1. Locate and remove the relay. Follow the steps above to access the fuse box in the luggage compartment and pull the relay straight out of its socket .
  2. Perform a visual inspection. Look for signs of corrosion, burn marks, or physical damage on the relay housing and prongs .
  3. Test for coil continuity. Set your multimeter to the ohms (Ω) setting. Identify the coil pins, which are usually marked on the relay housing. Place the multimeter probes on these pins and check for a reading. A reading indicates that the coil is intact; no reading means the coil is open and the relay is faulty .
  4. Test the switch contacts. If the coil is intact, you can test the switch contacts by applying 12V power to the coil pins. This should cause the relay to click and the switch contacts to close. You can then check continuity across the switch pins to confirm they are making contact .
  5. Swap with a known-good relay. The easiest way to test the relay is to swap it with a similar relay from another circuit in the fuse box. If the fuel pump starts working after the swap, the original relay is faulty .

How to Replace the Fuel Pump Relay

Replacing the fuel pump relay is one of the simplest repairs you can perform on your 2007 BMW X5. Here is the step-by-step process:

  1. Ensure safety. Turn off the ignition, remove the key from the ignition switch, and disconnect the negative terminal of the battery. This prevents accidental activation of the fuel pump while you are working .
  2. Locate the relay. Access the fuse box in the luggage compartment and find the fuel pump relay using the diagram on the fuse box cover .
  3. Remove the faulty relay. Pull the relay straight out of its socket. You may need to use a small amount of force, but it should come out easily .
  4. Insert the new relay. Align the prongs with the socket and push the new relay into place until it clicks. Make sure it is seated firmly .
  5. Reconnect the battery. Reattach the negative battery terminal and tighten it securely .
  6. Test the vehicle. Turn the ignition to the "ON" position and listen for the fuel pump to prime. Then start the engine to confirm the repair was successful .

Other Causes of Fuel Pump Failure in the 2007 BMW X5

If you have replaced the relay and the fuel pump still does not work, there are several other potential causes to investigate:

  1. Blown fuse. Check the three fuses mentioned earlier (F97, F105, and F122). If any of them are blown, replace them with the correct amperage rating .
  2. Faulty fuel pump. If the relay and fuses are fine, the pump itself may have failed. You can test for power at the fuel pump connector while someone turns the ignition on. If power is present but the pump does not run, the pump is likely faulty .
  3. Activated impact sensor. Some vehicles have an inertia switch that cuts power to the fuel pump in the event of a collision. If this switch is accidentally triggered, the pump will not run .
  4. Engine Control Unit (ECU) problems. The DME controls the relay, so a fault in the DME or its sensors can prevent the relay from activating .
  5. Wiring issues. Damaged, corroded, or loose wiring between the relay, fuse box, and fuel pump can interrupt power delivery .

Why the Fuel Pump Fuse Blows

If you find that the fuel pump fuse is blown, it is important to identify the underlying cause before replacing it. Common reasons include:

  1. Short circuit. Damaged or frayed wiring in the fuel pump circuit can cause a short to ground, which blows the fuse .
  2. Failing fuel pump. A fuel pump that is near the end of its life may draw more current than normal, overloading the fuse .
  3. Clogged fuel filter. A severely clogged fuel filter forces the pump to work harder, increasing current draw and potentially blowing the fuse .
  4. Incorrect fuse amperage. If a previous owner replaced the fuse with one of a lower rating, it will blow more easily under normal operating conditions .

Addressing the root cause is essential to prevent the new fuse or relay from failing as well.

Replacement Parts for the 2007 BMW X5 Fuel Pump Relay

When it comes time to replace the fuel pump relay, you have several options. The OEM part number for the fuel pump relay used in many 2007-2009 BMW E70 X5 models is BMW 11 16 7 419 13 or 11 16 7 413 13 . This is a standard 12V DC relay with a contact rating of around 30 amps, sufficient for the fuel pump's inductive load . You can also use aftermarket relays that cross-reference the OEM number, such as the Vaico V20-2652, which matches OE reference 11617563477 and fits a wide range of BMW vehicles including the X5 . Another option is the Vemo W0133-1632629, a 5-pin light green relay that fits 2007-2013 BMW X5 models . Always verify the part number and compatibility with your vehicle's VIN before purchasing.

Recommended Fuel Pump: KEMSO

When the fuel pump itself needs replacement, choosing a high-quality product is essential for reliable performance and long service life. KEMSO offers a range of high-performance fuel pumps that are designed as direct OEM replacements, ensuring a perfect fit for your vehicle. Each KEMSO fuel pump is built to meet or exceed original equipment specifications, providing consistent fuel delivery and dependable operation.

KEMSO stands behind its products with a lifetime warranty, giving you peace of mind that your investment is protected. Whether you are replacing a worn-out pump or upgrading for better performance, KEMSO delivers quality you can count on. To browse their selection and find the right fuel pump for your BMW X5, visit https://www.kemsoracing.com/. Their user-friendly website makes it easy to find the exact part you need, and their commitment to quality ensures your vehicle runs smoothly for years to come.

Final Thoughts

The fuel pump relay in a 2007 BMW X5 is a small but critical component that can cause significant problems when it fails. Knowing its location in the luggage compartment fuse box, understanding the symptoms of failure, and being able to test and replace it yourself can save you time and money. If the relay tests fine but the fuel pump still does not work, check the associated fuses, the pump itself, and the wiring before seeking professional assistance . Regular inspection of your fuse and relay panels can also help you catch potential issues early . With the right knowledge and tools, you can keep your BMW X5 running reliably for many miles to come. And when it is time to replace the fuel pump, remember to visit KEMSO Racing for high-performance, OEM replacement fuel pumps backed by a lifetime warranty.


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