Why the cigarette lighter does not work on a Nissan Murano and how to fix it

A situation when the cigarette lighter socket on a car stops functioning Nissan Murano, occurs quite often and causes serious inconvenience for owners. In today's world, where gadgets are essential for navigation and communication, lack of power in the cigarette lighter goes from a minor nuisance to a critical problem. Most drivers immediately rush to look for repair shops, but often the reason lies in trivial things that can be fixed on their own.

Electrical diagram Nissan Murano has certain features that distinguish it from other Japanese crossovers. Improper use of the outlet to power high-power devices, such as compressors or heated DVRs, can lead to overheating of the contacts or failure of protective elements. Understanding the principles of operation of this system will allow you to quickly localize the fault and return the functionality of the car without extra costs.

Location and checking of fuses

The first and most obvious step when identifying a problem is to visually and instrumentally check the fuse box. On all generations Nissan Murano (Z50, Z51, Z52) the fuses responsible for the cigarette lighter are located in the passenger compartment, but their exact location may vary depending on the year of manufacture and configuration. You will need to locate the plastic cover with electrical symbols, usually located under the steering column or at the end of the instrument panel on the driver's side.

Carefully study the diagram printed on the inside of the block cover. Look for a designation that may appear as "CIG" (Cigarette Lighter), "POWER OUTLET" or "12V SOCKET". Do not confuse them with the fuses responsible for the radio or interior lighting, since the circuits are often separated. Use a multimeter or a test lamp to check the continuity of the circuit, since a visual inspection does not always allow you to see a burnt-out spiral inside the transparent case.

• 🔍 Use a multimeter in continuity mode to accurately determine integrity fuse.
• 🛠️ Stock up on tweezers or special pliers to safely remove elements from fuse box.
• 💡 Pay attention to the current rating indicated on the case so as not to install an element with incorrect parameters.

If the fuse is visually intact, but no current flows, the problem may be deeper, however, in most cases, replacing it with a new element with the same rating resolves the issue. In some rare cases, the internal thermal relay will trip and reset after cooling, but more often than not, replacement will be required.

⚠️ Warning: Never attempt to replace a blown fuse with a higher current rating, even if it temporarily restores operation. This will create a direct threat fire due to overheating of the wires during a short circuit.

Analysis of the state of the socket and contacts

Often the reason for a non-working cigarette lighter lies not in the fuse, but in the socket itself. Mechanical damage caused by frequent insertion and removal of adapters leads to loosening of the central contact. This contact should press firmly against the base of the plug, ensuring reliable electrical contact. If the central pin is bent or elasticity is lost, power simply does not reach the device.

The second critical point is the condition of the side and bottom contacts. During operation, dirt, moisture or small debris gets inside the nest, which oxidizes the metal surfaces. Oxidation creates high contact resistance, causing voltage to drop and high-power devices to stop working, even if the cigarette lighter itself is not burned out. Cleaning the contacts with a special spray can restore the functionality of the circuit.

• 🧼 Use contact lubricant to protect against oxidation after cleaning sockets.
• 🔧 Gently bend the center contact with tweezers to ensure a tight fit.
• ⚡ Check for melted areas of plastic inside the socket, which indicates overheating.

Sometimes the problem occurs due to the use of low-quality adapters that have underrated parameters or poor assembly. Such devices can create a short circuit when connected, causing instantaneous protection or burnout of contacts in the outlet itself. If you notice a burning smell or a black coating around the socket, use of the vehicle should be stopped until the problem is resolved.

Relay and control unit diagnostics

In modern versions Nissan Murano (especially starting with the Z51 and Z52) the cigarette lighter power control is often done through a relay or an electronic body control module (IPDM E/R). If the fuse is intact and the socket has no voltage, the next diagnostic step is to check the operation of the relay. A relay is an electromechanical switch that completes a circuit based on a signal from the vehicle's electronics.

You can try replacing the cigarette lighter relay with a similar one from another unit, for example, one responsible for side lights or a sound signal, if their ratings are the same. This will allow you to quickly check whether the problem is in the relay itself. If the device works after replacement, it means that the old relay has failed and requires replacement with a new original product.

The situation is more complicated if control goes directly through the IPDM E/R unit. In this case, professional diagnostics through a dealer scanner may be required to read error codes and check the status of the unit's outputs. Sometimes a software failure occurs in which the unit blocks the supply of voltage to the outlet, and a flashing or reset is required.

• 🔊 Listen to the relay click when you turn on the ignition - its absence may indicate a malfunction.
• 📉 Use a multimeter to check the voltage at the relay output with the ignition on.
• 🔌 Check the condition of the connectors connecting to the IPDM E/R unit for corrosion.

Checking wiring and continuity

If all of the above elements are in working order, but the cigarette lighter still does not work, you need to proceed to checking the integrity of the wires. By car Nissan Murano With high mileage, the wiring may fray at bends or be exposed to moisture. A broken wire running from the fuse box to the outlet is a common cause of no power, especially in areas where the beam passes through body partitions.

To check, you will need to remove the decorative trims of the instrument panel and gain access to the wiring. Carefully inspect the harness for signs of overheating, melted insulation or mechanical damage. Use a multimeter in resistance mode to test the circuit from the fuse to the outlet. If the resistance is infinitely high, then there is an open circuit in the circuit.

⚠️ Attention: When checking the circuit, be sure to disconnect the battery to avoid accidental short circuit and damage to the multimeter. Work with extreme caution as access to wiring often requires dismantling complex components.

In some cases, the problem may be poor contact in the socket connector itself. Contacts may oxidize or become loose, resulting in loss of contact. Stripping the contacts and securing them securely often solves the problem without having to replace the entire wiring. If the wire is damaged, it must be repaired using soldering and high-quality insulation.

Wiring Features on the Z50

On the first generations of Murano, the wiring is made with a thinner cross-section, which increases the risk of overheating when using powerful consumers. It is recommended to check the condition of the insulation in the area of ​​the fuse box.

Features of operation and prevention

To avoid repeating the situation with a non-working cigarette lighter, you must follow the rules for using a 12V outlet. Do not use the outlet to connect devices that draw more current than the fuse rating (usually 15-20 Amps). Connecting powerful compressors, seat heaters or inverters can overload the circuit and cause component failure.

Regular maintenance includes checking that the adapters are securely fastened and cleaning the socket from dust. Use high-quality adapters with overload and short circuit protection. If you often use your cigarette lighter, it is recommended to check the condition of the contacts once a year and, if necessary, apply a special protective lubricant.

• ⚡ Do not connect several powerful devices at the same time through a splitter.
• 🧹 Regularly clean the nest of dust and small debris using compressed air.
• 🛑 Turn off devices before unplugging to avoid sparking.

Remember that the cigarette lighter in a modern car is not only a place to light cigarettes, but also a universal power source. Its serviceability is critical for the operation of the navigator, video recorder and other gadgets. A competent attitude towards electrics will extend the life of all system components and eliminate sudden breakdowns.

Connection diagram and fuse table

Below is a table that will help you quickly navigate the location of fuses for different generations Nissan Murano. Please note that numbering may vary depending on market and configuration, so always refer to the diagram on the cover of your unit.

Generation	Fuse number	Denomination (A)	Purpose
Z50 (2003-2007)	№14	20	Cigarette lighter (CIG)
Z51 (2008-2014)	№25	15	12V socket (Power Outlet)
Z52 (2015-2020)	№11	15	Rear 12V socket
Z52 (2015-2020)	№20	15	Front 12V socket

If you do not find the fuse you need in the table, carefully study the diagram on the back of the block cover. Some models may have two fuses: one for the front outlet and one for the rear. It is also worth considering that in some markets the scheme may have different markings. Important: The Murano Z51 often uses a separate fuse for the rear outlet, which is often ignored when diagnosing the front.

When to contact specialists

If checking all the elements yourself does not produce results, and the cigarette lighter still does not work, the problem may lie in complex electronics or hidden wiring damage. In such cases, it is recommended to contact a specialized service that has equipment for diagnosing Nissan electrical circuits. Technicians will be able to accurately determine the location of a break or malfunction of the control unit.

You should not attempt to repair complex electronic components yourself unless you have the appropriate experience and equipment. Incorrect actions can lead to failure of other vehicle systems, such as the radio, alarm or engine management system. A professional diagnosis will save you time and money in the long run.

• 🔧 Contact the IPDM E/R diagnostic service if the fuses are intact.
• 🔌 Check for hidden breaks in the harnesses under the interior trim.
• 💻 Order checking error codes through a dealer scanner.

⚠️ Attention: If the fuse blows again within a few seconds after replacing the fuse, stop using it immediately and contact an electrician. This is a sign of a serious short circuit in the circuit.

FAQ: Frequently asked questions

Why did the cigarette lighter stop working after connecting the DVR?

Most likely, the DVR or its power supply created an overload, which caused the fuse to blow. Check the fuse box and replace the burnt element with a new one of the same rating. If the problem persists, there may be a short circuit in the recorder itself.

Can I use the cigarette lighter to charge a powerful compressor?

No, standard socket Nissan Murano designed for current up to 15-20 Amperes. Powerful compressors consume more, which can lead to overheating of contacts or blown fuse. For compressors, it is better to use a separate battery power supply.

Where is the fuse box located in the interior of the Nissan Murano Z52?

In the Z52 generation, the main fuse box is located at the end of the instrument panel on the driver's side. To access you need to open the cover and remove it. The fuse location diagram is printed on the inside of the cover.

What should I do if the new fuse immediately blows?

This indicates a short circuit in the circuit. Do not install a fuse of a higher rating. Check the outlet for shorted contacts and inspect the wiring for damage. If no defects are visible visually, diagnostics by an electrician is required.

Why doesn't the socket work even though the fuse is intact?

The reason may be a faulty relay, oxidation of contacts in the socket, broken wiring, or a malfunction of the IPDM E/R unit. It is necessary to test the circuit with a multimeter and check the condition of the socket contacts.