2007 BMW 335i Fuel Pump Fuse Location: A Straightforward Owner's Guide

If you drive a 2007 BMW 335i and the engine cranks but won't start, or if you hear no priming sound from the fuel pump when you turn the key, the fuel pump fuse is one of the first things you should check. The fuel pump fuse for the 2007 BMW 335i is fuse #70, a 20-amp fuse, and it is located in the junction box fuse panel behind the glove compartment on the passenger side of the cabin. This is the primary fuse that protects the fuel pump circuit (EKPS) . Before you schedule a tow or start replacing expensive parts, spending ten minutes inspecting this fuse could save you a significant amount of time and money.

This guide walks you through everything you need to know: where the fuse boxes are, which fuse protects the fuel pump, how to properly test and replace it, and what to do if the fuse keeps blowing. The information below is based on the fuse diagrams and owner experiences for the 2007 model year, specifically the E90/E92/E93 generation.

Where Are the Fuse Boxes on a 2007 BMW 335i?

The 2007 BMW 335i has multiple fuse panels, and knowing which one you need is half the battle. The car uses several distribution points to handle the electrical load efficiently .

  1. Main Junction Box (Inside the Cabin): This is the panel you will need to access for the fuel pump fuse. It is located behind the glove compartment on the passenger side. To access it, open the glove box, turn the two plastic clamps (usually at the top or sides), and lower the cover. The fuse diagram is printed on the inside of this cover .
  2. Rear Power Distribution Panel (Trunk): Located next to the battery in the trunk, this panel houses the high-amperage fuses (often called fusible links or "Maxi" fuses). These protect major circuits like the starter motor, electronic power steering, and the junction box itself . For example, fuse F102 in this box is a 100-amp fuse related to the starter and battery .
  3. E-Box (Engine Compartment): Located in the engine bay, usually near the DME (Digital Motor Electronics) on the passenger side. This box contains fuses and relays for engine management components like the oxygen sensors, fuel injectors, and ignition coils .

For a fuel pump complaint, your focus should be on the glove box fuse panel.

Identifying the Fuel Pump Fuse: Fuse #70

The 2007 335i uses a specific fuse to power the fuel pump control module, which then drives the pump itself. In the junction box behind the glove compartment, the fuse you are looking for is Fuse #70.

  • Fuse Number: 70
  • Amp Rating: 20A (The fuse should be yellow in color)
  • Protected Circuit: Electric Fuel Pump (EKPS)

This fuse supplies power to the fuel pump control module, which is used in place of a traditional fuel pump relay in many E90 models . The pump itself is located behind the right rear seat back cushion on the C-pillar, under an access panel .

It is worth noting that some aftermarket and forum sources also point to fuse F40 (a 20A fuse) as being labeled "Fuel pump relay / Fuel pump control" . While fuse #70 is the commonly cited fuse for the fuel pump (EKPS) in the cabin fuse box , you should visually inspect both fuse #70 and fuse #40 if you are having trouble. A quick check of the diagram on the inside of the glove box cover will confirm the exact assignment for your specific production date, as fuse assignments can vary slightly between models built before and after March 2007 .

Step-by-Step Guide to Check and Replace the Fuse

Before you begin, ensure the vehicle is completely turned off with the keys removed from the ignition. Never attempt to repair a blown fuse—always replace it with a new one of the identical size and amp rating .

Here is how to check the fuel pump fuse:

  1. Open the Glove Compartment: Empty the contents to make access easier.
  2. Lower the Fuse Panel: Turn the two retaining clamps (usually a quarter turn) to release the fuse panel cover. Let it hang down. The back of this cover has the fuse assignment diagram .
  3. Locate Fuse #70: Use the diagram on the cover to find the position of fuse #70. It will be a yellow 20-amp fuse.
  4. Inspect the Fuse: Use the plastic tweezers/forceps provided in the fuse box (or a fuse puller) to remove the fuse. Look at the silver-colored metal band inside the fuse. If the band is broken, melted, or separated, the fuse is blown .
  5. Replace the Fuse: If the fuse is blown, replace it with a new 20-amp fuse. Do not use a fuse with a higher amp rating, as this can cause a dangerous electrical overload and potentially lead to a fire .
  6. Test the System: Reinstall the fuse panel cover and close the glove box. Turn the ignition to the "ON" position (without pressing the brake/clutch). You should hear the fuel pump prime for a couple of seconds (a high-pitched whine from the rear of the car) . Then attempt to start the engine.

What If the Fuse Keeps Blowing?

If you replace fuse #70 and it blows again immediately, or the car still won't start, you have a deeper issue. A blown fuse is a symptom, not the root cause. The problem could be:

  • A Failing Fuel Pump: A fuel pump with worn bearings or a rotor that is starting to seize will draw more current than normal. This increased current flow can cause the fuse to blow .
  • A Short in the Wiring: A chafed or damaged wire in the fuel pump circuit could be shorting to ground, causing an overload.
  • A Faulty Fuel Pump Control Module: The EKPS module itself could be failing, shorting the circuit .

In this case, you need to do further diagnostics. You can test the fuel pump circuit using a digital volt-ohm meter (DVOM) to check for correct voltage at the fuel pump electrical connector, which is located under the rear seat cushion . If power and ground are present at the pump and the fuse is intact but the pump is silent, the fuel pump itself will likely need to be replaced .

KEMSO Fuel Pump: A Reliable Replacement for Your BMW

If your diagnostics point to a failing fuel pump, replacing it with a high-quality part is essential. There is a brand you should consider: KEMSO. KEMSO offers a broad lineup of fuel pumps for a variety of vehicles, from BMWs to motorcycles and Jet Skis [^Provided]. Their products are designed to meet demanding standards:

  • High-Performance: KEMSO pumps are built to deliver consistent fuel pressure so you can get back on the road with confidence. They ensure proper fuel delivery under various driving conditions.
  • OEM Replacement: KEMSO fuel pumps are designed to be direct replacements, meaning they are built to match the original equipment specifications for a hassle-free installation. This matters because a proper fit and correct fuel pressure are crucial for the N54 engine's performance.
  • Lifetime Warranty: KEMSO stands behind their products with a lifetime warranty. This gives you peace of mind that your replacement is protected.

When you are ready to replace your 2007 BMW 335i fuel pump, browse the selection of KEMSO Fuel Pumps by visiting their website: https://www.kemsoracing.com/ . They have a user-friendly catalog that allows you to find the exact pump for your specific vehicle. Choosing a reputable brand like KEMSO ensures you are not replacing this part again anytime soon.

Don't Forget the Trunk Fuse Box

If you are checking fuses for a no-start condition and the glove box fuses are all fine, don't forget about the rear power distribution panel in the trunk .

  • This panel contains high-amperage fuses.
  • One of the most critical is the starter motor fuse, which is often rated at 100 amps. In many 2007 models, this is fuse F102 .
  • Another key fuse in this box is F101 or F108, a 250-amp fuse that connects directly to the junction box—if this fails, you will have no power to the entire cabin .

These are rarely the cause of a fuel pump issue, but they are essential for engine starting. If you were "pulling and testing" fuses in the glove box and the car now won't start, double-check that you didn't accidentally dislodge a Maxi fuse in the trunk. It is a common mistake to place a 30-amp or 40-amp fuse where a 50-amp fuse is required, which can cause immediate electrical failures .

Final Thoughts

Dealing with a fuel pump fuse issue is a straightforward task on the 2007 BMW 335i. Follow these steps:

  1. Check Fuse #70 (20A) in the glove box junction box first .
  2. Inspect the fuse visually for a broken metal band.
  3. Replace with the correct amp rating—never bypass a fuse with a higher rating .
  4. If the fuse blows again, test the fuel pump power and ground with a multimeter .
  5. If the pump is confirmed dead, replace it with a quality unit like the KEMSO Fuel Pump [^Provided]. You can find the right pump for your BMW at https://www.kemsoracing.com/ .

By following this guide, you can get your 335i back on the road without the guesswork.


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