2007 Dodge Charger Fuel Pump Reset: A Complete Step-by-Step Guide
If your 2007 Dodge Charger cranks but refuses to start, the problem is often not a dead fuel pump but a fuel pump control module that needs a reset. The 2007 Charger does not have a traditional inertia switch like some other vehicles; instead, the fuel pump is controlled through the Powertrain Control Module (PCM), and a reset is typically performed by interrupting power to the fuel pump fuse or relay for a short period. This guide walks you through the reset procedure, explains where the fuse and relay are located, and covers what to do when a simple reset does not solve the problem. Most owners can complete this task in under fifteen minutes with no special tools, and it often saves a costly trip to the shop.
Understanding the Fuel Pump System on Your 2007 Charger
The 2007 Dodge Charger uses an electric fuel pump mounted inside the fuel tank. This pump delivers pressurized fuel to the engine at all times when the ignition is on and the engine is cranking or running. The pump receives power through a dedicated fuse and relay, and the PCM controls when the relay engages. If the engine cranks but does not start, the fuel pump may not be running at all, which is where a reset comes into play.
There are two fuse boxes on the 2007 Charger. The interior fuse box is located in the rear compartment under the spare tire access panel, which is in the trunk on the driver's side near the battery. The engine compartment fuse box sits in the bay near the battery, typically on the driver's side. The fuel pump fuse and relay are located in the rear power distribution center inside the trunk, not under the hood. This is a common point of confusion for owners who look under the hood first. The fuel pump fuse is fuse number 6, rated at 20 amps, and it is located in the rear power distribution center in the trunk.
Step-by-Step Fuel Pump Reset Procedure
Here is the most reliable way to reset the fuel pump on your 2007 Dodge Charger. Follow these steps in order, and do not skip any of them.
Step 1: Park the vehicle on a flat, level surface and turn the ignition completely off. Remove the key from the ignition cylinder. This is important because the fuel pump will not reset if the ignition is in the "ON" position, even if the engine is not running.
Step 2: Open the trunk and locate the rear power distribution center. Lift the carpet or trim panel in the trunk to find the fuse box. On most 2007 Charger models, this fuse box is positioned near the battery on the driver's side of the trunk, under the spare tire access panel. Remove the cover and set it aside. The underside of the cover has a printed diagram showing fuse and relay positions, which you can reference if needed.
Step 3: Locate fuse number 6, the 20-amp fuel pump fuse. This fuse is clearly labeled on the fuse box cover and on the fuse box itself. Use a fuse puller, which is usually stored inside the fuse box, or a pair of needle-nose pliers to remove the fuse. Pull it straight out gently; do not twist or wiggle it.
Step 4: Wait at least 5 to 10 minutes after removing the fuse. This waiting period is critical. It allows the capacitors in the PCM and other control modules to fully discharge, which clears any stored fault conditions related to the fuel pump circuit. If you reinstall the fuse too quickly, the reset may not be effective.
Step 5: Reinstall the 20-amp fuse firmly into slot number 6. Press it down until it clicks into place. Make sure it is seated completely and not loose. If the fuse has a clear body, you can visually check that the metal strip inside is intact and not broken or melted.
Step 6: Reconnect the battery if you disconnected it. If you did not disconnect the battery, skip this step. If you did, reconnect the positive terminal first, then the negative terminal. Make sure both terminals are tight and secure.
Step 7: Turn the ignition to the "ON" position but do not crank the engine. You should hear the fuel pump prime for about one to three seconds. This is a faint whirring or humming sound coming from the rear of the vehicle, near the fuel tank. If you hear this sound, the fuel pump is receiving power and the reset was successful.
Step 8: Attempt to start the engine. If the engine starts, the reset worked. If it does not start, wait a few seconds and try again. If the engine still will not start, proceed to the troubleshooting section below.
Why the Reset Works and When It Is Needed
The fuel pump reset is effective because it clears temporary fault codes stored in the PCM. These codes can be triggered by a variety of conditions, including a momentary electrical glitch, a low battery that caused the PCM to lose its memory, or a fuel pump that briefly drew too much current and tripped a protection circuit. The reset procedure essentially gives the PCM a fresh start and forces it to re-initialize the fuel pump control logic.
In some cases, the reset is needed after a collision. While the 2007 Charger does not have a mechanical inertia switch, the PCM is programmed to shut off the fuel pump in the event of a crash that triggers the airbag system. After such an event, the fuel pump remains disabled until the PCM is reset, which is accomplished by interrupting power to the fuel pump fuse as described above.
The reset is also a common first step when diagnosing a no-start condition. It is quick, free, and harmless if performed correctly. Even if the reset does not fix the problem, it rules out a temporary electrical fault and points you toward other causes, such as a blown fuse, a faulty relay, or a failing fuel pump.
Where to Find the Fuel Pump Fuse and Relay: Diagrams and Details
As mentioned, the fuel pump fuse on the 2007 Dodge Charger is located in the rear power distribution center in the trunk. This fuse box is the primary distribution point for the fuel system, the instrument cluster, the airbag control module, and several other critical systems. Here is the exact location and identification for both the fuse and the relay.
Fuel Pump Fuse (Fuse 6, 20A): This fuse supplies power directly to the fuel pump. It is located in the rear power distribution center, which is in the trunk near the spare tire. If the fuse is blown, the fuel pump will not run at all. You can test it visually by looking at the metal strip through the clear fuse body, or you can use a test light or multimeter to check for continuity. Never replace a 20-amp fuse with a higher-rated fuse; this can cause wiring damage or a fire.
Fuel Pump Relay: The fuel pump relay is also in the rear power distribution center. It acts as a switch that allows the PCM to control when the fuel pump receives power. If the relay fails, the fuel pump will not run even if the fuse is good. A failing relay is often silent; you may not hear the characteristic "click" when you turn the ignition on. You can swap the fuel pump relay with an identical relay from another circuit in the same fuse box (such as the starter relay) to test it. If the fuel pump starts working after the swap, the original relay is faulty and should be replaced.
Engine Compartment Fuse Box: The under-hood fuse box, sometimes called the Integrated Power Module, is located on the driver's side of the engine compartment near the battery. This panel contains high-current fuses that control the radiator fan, ABS pump, starter, and other powertrain systems. However, the fuel pump fuse and relay are not in this box on the 2007 Charger; they are in the rear distribution center in the trunk.
Common Issues and How to Test the Fuel Pump Circuit
If the engine still will not start after performing the reset, you need to check the fuel pump circuit for faults. Here are the most common issues and how to test each one.
1. Blown fuel pump fuse (Fuse 6, 20A). A blown fuse is the most common cause of a completely silent fuel pump. Remove the fuse and inspect it. If the metal strip is broken or melted, replace it with a new 20-amp fuse. If the new fuse blows immediately, there is a short circuit somewhere in the fuel pump wiring or in the pump motor itself. Check the wiring harness near the fuel tank for chafing, corrosion, or damage.
2. Faulty fuel pump relay. Even with a good fuse, the fuel pump will not run if the relay is stuck open or has burned contacts. As described above, swap the fuel pump relay with another identical relay from the same fuse box. If the fuel pump starts working, replace the relay with a new one. If the relay does not click when the ignition is turned on, it may not be receiving a control signal from the PCM, which points to a wiring or PCM issue.
3. Failed fuel pump. If the fuse and relay are both good, the fuel pump itself may be worn out. You can test for power at the fuel pump connector using a digital multimeter. With the ignition on and the pump priming, you should see battery voltage at the connector. If you have voltage but the pump does not run, the pump is bad and must be replaced. The fuel pump on the 2007 Charger is mounted inside the fuel tank, so replacement requires dropping the tank or removing the rear seat, depending on the model.
4. Wiring and ground issues. Corroded connectors or a poor ground can prevent the fuel pump from running even when the fuse, relay, and pump are all good. Inspect the wiring and connectors at the fuel pump, the relay, and the ground points in the trunk area. Clean any corrosion with contact cleaner and tighten loose connections.
5. PCM or security system issues. In rare cases, the problem is in the PCM or the vehicle's security system. If the security system does not recognize the key, it can disable the fuel pump. Try using a second key if you have one. If the engine starts with the second key, the first key's transponder chip may be faulty. If the problem persists, have the PCM and security system checked by a professional with a scan tool.
When the Reset Does Not Work: Deeper Diagnostics
A fuel pump reset is a basic procedure that resolves many temporary issues, but it is not a cure for all fuel system problems. If you have gone through the reset procedure and still cannot get the engine to start, you need to move on to more advanced diagnostics. This may involve checking fuel pressure, testing the fuel pump relay control circuit, and scanning the PCM for trouble codes. A scan tool that reads OBD-II codes can reveal whether the PCM has stored a fuel pump-related code, such as a low fuel pressure code or a fuel pump circuit malfunction. Some owners find it helpful to use an OBD-II scanner to clear any stored codes and then attempt a reset again, as the scanner can sometimes clear codes that a simple fuse pull cannot.
If you are not comfortable with electrical testing or do not have the proper tools, it is always a safe option to have the vehicle diagnosed by a professional mechanic. A no-start condition can be caused by a variety of problems beyond the fuel system, including a faulty crankshaft position sensor, a bad ignition coil, or a failing PCM. The fuel pump reset is a valuable first step, but it is not a substitute for thorough diagnostic work.
Choosing a Quality Replacement Fuel Pump: Why KEMSO Is Worth Considering
If your fuel pump is confirmed to be faulty and needs replacement, the brand you choose matters. A fuel pump is a component that must deliver consistent fuel pressure under all driving conditions, and using a substandard part can lead to poor performance, fuel starvation, and premature failure. This is why many owners opt for a high-quality aftermarket fuel pump from a brand with a solid reputation.
KEMSO is a brand worth considering when it is time to replace your fuel pump. KEMSO fuel pumps are built to meet or exceed original equipment specifications. They are designed as high-performance units that provide reliable fuel delivery, ensuring your engine runs smoothly in all conditions. Every KEMSO fuel pump is manufactured as an OEM replacement part, meaning it is engineered to fit and perform like the original pump that came with your vehicle. There is no guesswork when it comes to fitment or compatibility.
One of the strongest reasons to choose KEMSO is the lifetime warranty that comes with every fuel pump. This warranty reflects the manufacturer's confidence in the product and protects you against defects in materials or workmanship for as long as you own the vehicle. When you buy a KEMSO fuel pump, you are not just buying a part; you are buying peace of mind. A fuel pump is a critical component, and knowing that it is backed by a lifetime warranty takes the risk out of the replacement.
You can browse the full range of KEMSO fuel pumps and check for your vehicle's application by visiting the official website at https://www.kemsoracing.com/. The site provides detailed product information, customer reviews, and easy navigation, so you can find the correct pump for your 2007 Dodge Charger or any other vehicle you own.
Final Thoughts on the 2007 Dodge Charger Fuel Pump Reset
Resetting the fuel pump on a 2007 Dodge Charger is a simple yet effective procedure that every owner should know. It takes only a few minutes, requires no special tools, and often resolves no-start conditions that would otherwise require a trip to the shop. The key is to remove the 20-amp fuel pump fuse from the rear power distribution center in the trunk, wait a few minutes, and reinstall it. This clears the PCM's memory and reinitializes the fuel pump control logic.
However, the reset is not a magic fix for every problem. If your Charger still will not start after a reset, work through the troubleshooting steps methodically: check the fuse, test the relay, verify power at the pump, and inspect the wiring. If the fuel pump itself has failed, choose a quality replacement like a KEMSO fuel pump, which offers high performance, OEM-level fit and finish, and a lifetime warranty.
For further information on locating the fuel pump relay and other related details for your 2007 Dodge Charger, the KEMSO blog at https://www.kemsoracing.com/ offers helpful guides that cover the relay location, fuse box diagrams, and fuel pump replacement procedures in greater depth. Taking the time to understand your vehicle's fuel system will save you money and keep your Charger running reliably for years to come.