Peugeot 407 Fuse Box Guide

The Peugeot 407, a stylish and popular French car produced from 2004 to 2010, came in sedan, SW wagon, and coupe variants. While a fantastic vehicle, like all cars, it can experience electrical gremlins. Understanding your Peugeot 407's fuse box is crucial for any owner looking to maintain their car or troubleshoot issues. This guide provides detailed information on the fuse box locations, diagrams, and the function of each fuse and relay for different model years, ensuring you can pinpoint and resolve electrical problems effectively.

Understanding Your Peugeot 407's Electrical System: Fuses and Relays

Fuses are essential safety devices that protect your car's electrical circuits from damage caused by overcurrents or short circuits. When an excessive amount of electricity flows through a fuse, its thin wire melts, breaking the circuit and preventing damage to more expensive components. Relays, on the other hand, are electrically operated switches that use a low-current circuit to control a higher-current circuit, often used for high-power devices like headlights or the starter motor.

Peugeot 407 Fuse Box Locations

The Peugeot 407 typically has its main fuse boxes located in two primary areas:

• Engine Compartment: Usually found near the battery, accessible by removing a protective cover.
• Passenger Compartment: Typically located at the bottom of the dashboard on the driver's side, behind a removable cover.

Additionally, some models may have a smaller fuse box located in the luggage compartment.

Fuse Box Type 1: For Cars Manufactured Before 2007

Engine Compartment Fuse Box (Pre-2007)

This fuse box is situated next to the battery. To access it, you'll need to remove the protective cover and then lift the fuse box cover itself.

Diagram and Fuse Assignments (Pre-2007 Engine Compartment)

Here's a breakdown of common fuse assignments in the engine compartment fuse box for Peugeot 407 models manufactured before 2007:

Passenger Compartment Fuse Box (Pre-2007)

To access this fuse box, you need to open the cover on the driver’s side, at the bottom of the dashboard, and then push down the fuse box itself.

Diagram and Fuse Assignments (Pre-2007 Passenger Compartment)

Separately Located Fuses (Pre-2007)

Some components have their fuses located separately:

Note: The fuse for the front cigarette lighter is fuse number 10 (20A). For the rear cigarette lighter or 12V socket, check the relevant fuses in the luggage compartment or passenger compartment, depending on the specific model configuration.

Luggage Compartment Fuse Box (Pre-2007)

Access to this fuse box involves turning two screws securing the guard on the right side of the luggage compartment.

Diagram and Fuse Assignments (Pre-2007 Luggage Compartment)

Fuse Box Type 2: For Cars Released Since 2007

Engine Compartment Fuse Box (Post-2007)

Similar to earlier models, the fuse box in the engine compartment is located near the battery.

Diagram and Fuse Assignments (Post-2007 Engine Compartment)

Passenger Compartment Fuse Box (Post-2007)

The location and access method for the passenger compartment fuse box are generally the same as for pre-2007 models.

Diagram and Fuse Assignments (Post-2007 Passenger Compartment)

Separately Located Fuses (Post-2007)

Note: For the front cigarette lighter fuse, it's fuse number 9 (30A). For the rear 12V socket, it's G32 (15A).

Common Electrical Issues and Troubleshooting

When a particular electrical component stops working, the first step is to check the corresponding fuse. If the fuse is blown (the metal wire inside is broken), replace it with a new one of the exact same amperage rating. Never use a fuse with a higher amperage, as this can cause significant damage and fire hazards. If the new fuse blows immediately, there is likely a short circuit in the wiring or the component itself, and further diagnosis is required.

Common issues that might point to a blown fuse include:

• A non-functioning cigarette lighter or 12V socket.
• Power windows not working.
• The car radio not turning on.
• Headlights or taillights failing.
• Wiper or washer systems malfunctioning.
• Instrument panel lights not illuminating.

Peugeot 407 Clutch and DMF Information

While this guide focuses on fuses, it's worth noting that clutch-related issues can also arise. A common problem reported by owners involves the Dual Mass Flywheel (DMF) and clutch assembly. Symptoms can include rattling noises, vibrations felt on the clutch pedal, and a "wobbly" feeling during clutch operation. Replacing a clutch and DMF is a complex mechanical procedure, often requiring the removal of the gearbox. This is a significant undertaking that typically involves:

• Safely jacking up the vehicle and supporting it securely on axle stands.
• Disconnecting the battery.
• Removing components like the air filter assembly, starter motor, and gear linkage.
• Draining the gearbox oil.
• Carefully removing the driveshafts.
• Potentially removing the subframe for access.
• Supporting the engine and gearbox independently.
• Disconnecting the gearbox from the engine.
• Replacing the clutch, pressure plate, release bearing, and DMF.
• Reassembling everything in the reverse order, ensuring all bolts are torqued to specification.

Disclaimer: Clutch replacement is an advanced repair. If you are not experienced, it is highly recommended to seek professional assistance. Attempting this job without the necessary skills and tools can lead to further damage or injury.

Frequently Asked Questions (FAQs)

What voltage does a Peugeot 407 use?

Like virtually all modern passenger cars, the Peugeot 407 operates on a 12-volt electrical system. This is the standard voltage for vehicle batteries, alternators, and most electrical components.

How do I know if a fuse is blown?

A blown fuse will have a visibly broken or melted metal filament inside. You can also test a fuse using a multimeter set to continuity mode; a good fuse will show continuity, while a blown one will not.

Can I use a higher amperage fuse if the correct one keeps blowing?

Absolutely not. Using a fuse with a higher amperage rating than specified can lead to overheating of wires, melting of insulation, and potentially a fire. It bypasses the safety mechanism and can cause severe damage to the electrical system or the component it protects.

What is a PARC shunt?

A 'PARC shunt' (often labelled FS1 or similar) is typically a component related to the car's parking assistance system or another specific electronic module. Its exact function can vary, but it's usually a fuse or a protective element for a particular system.

How long is a Peugeot 407?

The length of a Peugeot 407 varies slightly depending on the body style:

• Sedan: Approximately 4.79 meters (188.6 inches)
• SW (Estate/Wagon): Approximately 4.81 meters (189.4 inches)
• Coupe: Approximately 4.81 meters (189.4 inches)

Conclusion

Understanding the fuse box layout of your Peugeot 407 is a fundamental skill for any owner. By correctly identifying and replacing blown fuses, you can efficiently resolve many common electrical issues. Always refer to your vehicle's owner's manual for the most accurate and specific fuse information for your particular model year and trim level. For more complex electrical problems or mechanical repairs like clutch replacement, consulting a qualified mechanic is always the safest option.