Crossover owners Nissan Qashqai second generation (J11 body) are often faced with a situation where one of the car’s electronic components stops working. Whether it's a power window failure, interior lighting, or problems with the cigarette lighter, the first thought is to check the electrical circuit. In most cases, the problem lies in a burnt-out fuse element that protects the wiring from a short circuit.
Find and replace this component with Nissan Qashqai is not difficult if you know the exact location of the blocks. The designers of the Japanese brand provided two main installation locations: in the engine compartment and in the car interior. Each of these blocks is responsible for its own groups of current consumers, and for quick diagnostics it is necessary to understand what exactly each fuse is responsible for.
Location of the main protection units in the engine compartment
The first and largest cluster of protective elements is located under the hood. The block is located on the left side of the engine compartment (when viewed in the direction of travel), closer to the windshield and washer reservoir. It is enclosed in a durable black plastic case, which is reliably protected from moisture and dust.
To get to the contents, you need to unfasten the plastic lid latches. Inside you will find not only standard fuse links, but also powerful relays and large fuses (maximum) that are responsible for the operation of the generator, cooling fan and ignition system. Please note that when the engine is running or the ignition is on, access to this unit requires extreme caution.
It is best to inspect elements under the hood in natural light. Often a blown fuse can be identified visually: the plastic case may be slightly melted, and the metal jumper inside may be torn. To check, use a multimeter in continuity mode or a test lamp.
It is important to note that the engine compartment often contains elements responsible for the operation of ABS systems and electronic power steering. If you have lost steering control or the brake system fault light has come on, check this particular unit.
Interior fuse box: access and location
The second main unit is located directly inside the car. On the model Nissan Qashqai J11 it is located in the dashboard on the left side, near the driver's door. To access it, you need to open the unit door, which is hidden under the decorative dashboard panel.
To open the lid, you just need to pull the special tab or press the latch. Inside you will see a diagram of the arrangement of elements pasted on the inside of the lid. This diagram is your main assistant when finding the right fuse, since numbers and functions may vary depending on the year of manufacture and configuration.
This block contains elements responsible for audio system, cigarette lighter, light in the salon, electric windows and airbag control unit. If your radio does not work or the air conditioner stops turning on, check this particular compartment.
⚠️ Attention: Before starting work in the interior, be sure to make sure that the car’s ignition is completely turned off. Remove the key from the ignition to avoid accidental shorting when removing the fuse.
Sometimes accessing the unit can be difficult due to lack of hand room. In this case, use special plastic tweezers, which are usually attached to the unit cover or located in the glove compartment. It is not recommended to use metal tools to avoid damaging adjacent contacts.
Diagram and explanation of the main fuses
Understanding fuse labeling is critical for effective diagnosis. On the body of each element there is a number indicating its rating in amperes. The housing color also matches the specific amperage rating, making visual inspection easier.
Below is a table with the most common fuses and their assignment for the model Nissan Qashqai J11. Please note that this information is general information and may vary slightly between model years.
| Fuse number | Denomination (A) | Color | Function |
|---|---|---|---|
| 10 | 7.5 | Brown | Dashboard, instrument cluster |
| 12 | 15 | Blue | Power windows (driver) |
| 15 | 10 | Red | Engine control system (ECU) |
| 18 | 20 | Yellow | Cigarette lighter and 12V socket |
| 22 | 15 | Blue | Audio system and navigation |
If you do not find the element you need in the table, carefully study the diagram on the block cover. Not only the numbers are indicated there, but also a graphical representation of the relay location. For complex systems such as ABS or ESP, special tweezers can be used to remove the relay.
A common mistake is replacing the fuse with an element with a higher rating. This can lead to burnt out wiring and even a fire. Always use a fuse with exactly the same amperage rating as indicated on the original.
- Window lifters
- Cigarette lighter
- Radio tape recorder
- Lighting
- Other
Rules for safe replacement and diagnostics
The process of replacing a burnt-out element is simple, but requires compliance with certain safety regulations. First you need to determine the cause of the burnout. Simply inserting a new fuse without finding the cause of the short will cause it to blow again.
Use a special checklist to make the replacement correctly and avoid mistakes:
☑️ Fuse replacement procedure
To remove, use only plastic tweezers, which are often included with the car. If you don't have one, you can use plastic eyebrow tweezers, but not metal tweezers, which can short out adjacent contacts.
After installing a new element, check the operation of the device. If it works, the problem is solved. If the fuse blows immediately after installation, there is a short circuit in the circuit and professional electrical diagnostics are required.
⚠️ Warning: Never try to replace a fuse with a piece of wire or foil. This is a gross violation of safety rules, which can lead to complete failure of the electronic control unit or fire.
Sometimes the problem may not be the fuse itself, but a poor connection. Inspect the seat: if the contacts are oxidized or loose, they need to be carefully cleaned and tightened. Poor contact creates additional resistance and heat.
Hidden problems and features of J11 electronics
Owners Nissan Qashqai Sometimes they are faced with a situation where all the fuses are intact, but the device does not work. This may be due to a failure of the relay or the electronic unit itself. In such cases, simply replacing the fuse will not help.
A special feature of the J11 model is the presence of an intelligent access system and push-button engine start. If your car does not start and the starter does not turn, check not only the fuses, but also the starter and ignition relays. They are often found in the same block, but are shaped like cubes.
What to do if the fuse keeps blowing?|If the new fuse blows immediately after installation, this indicates a short circuit in the circuit. Possible reasons
damage to the wiring insulation, a short to ground in the device itself (for example, in speakers or lighting), a malfunction of the electronic control unit. In this case, you need to contact the service to check the wiring and find the location of the short circuit. Trying to find a short circuit on your own without experience and equipment is dangerous and can aggravate the problem.
It is also worth paying attention to the condition of the battery. When the charge is low or the terminals are poorly connected, the electronics may behave erratically, which is sometimes mistaken for a faulty fuse. Check the battery voltage and terminal condition.
Diagnosing complex faults often requires connecting a diagnostic scanner. It will show errors in electronic components that may be related to power circuits. Errors such as "Open circuit" or "Short to ground" will indicate the exact location of the problem.
Before purchasing new fuses, take a photo of the circuit diagram on the block cover. This will help the salesperson at the auto parts store to accurately select the right item if you have forgotten the number or denomination.
Color marking table and selection of analogues
Standard fuses are color-coded, which allows you to quickly determine their rating without the use of measuring instruments. This system is unified for most car manufacturers, including Nissan.
Knowing the color coding will help you in an emergency when you don't have a diagram at hand. For example, if you need to replace a burnt-out element, but you don’t remember its number, the color of the case will tell you the approximate amperage.
| Case color | Denomination (A) | Application |
|---|---|---|
| Gray | 2 | Electronic control units, sensors |
| Purple | 3 | Devices, lighting |
| Pink | 4 | Low power circuits |
| Brown | 5 | Lighting, sensors |
| Red | 10 | Cigarette lighter, audio system |
Cheap alternatives may have an incorrect fuse link that will burn out too late or too early.
If you run out of fuses of the required rating, it is better to use an element with a lower value than with a higher one. For example, instead of 15A, you can temporarily put 10A, but in no case 20A. This will protect the circuit from overload.
Diagnosis of complex cases and relays
In addition to fuses, in blocks Nissan Qashqai J11 relays installed. They are responsible for switching powerful current consumers. If the fuse is intact and the device does not work, the problem often lies in the relay.
The relay can be checked by replacing it with a similar one from another circuit (if they have the same markings and purpose). For example, the cooling fan relay is often the same as the headlight relay. Swap them and check the operation.
It is also worth checking the condition of the contacts in the connectors. Over time they can oxidize or weaken. Use a special contact cleaner or WD-40 to remove oxides. This will improve conductivity and prevent overheating.
⚠️ Attention: When replacing the relay, make sure you install it in the correct direction. There is an arrow or connection diagram on the relay body, which must match the markings on the block. Incorrect installation may result in a short circuit.
If the problem is not solved by replacing the fuses and relays, the electronic control unit itself may be faulty. In this case, professional diagnostics using specialized equipment is required.
Regularly checking fuses and cleaning the contacts in the blocks allows you to avoid many electrical problems and extend the life of the electronic components of the Nissan Qashqai J11.
FAQ: Frequently asked questions
Where is the tweezers for removing fuses?
Plastic tweezers are usually attached to the inside of the fuse box cover in the engine compartment or passenger compartment. If you don't have one, you can use any plastic clamp, but not metal tools.
Can I use a different color fuse?
No, the color indicates the amperage rating. Using a fuse with the wrong rating (even if it fits into the socket) is dangerous for the vehicle's electrical circuit.
What should I do if the new fuse burns out immediately?
This is a sign of a short circuit in the circuit. Do not try to install fuses with a higher rating. It is necessary to find and eliminate the cause of the short circuit by contacting an electrician.
How to check a fuse without a multimeter?
Visually inspect the metal jumper inside the transparent housing. If it is torn or blackened, the fuse has blown. You can also try replacing it with a known-good element.
Does fuse F18 correspond to the cigarette lighter?
On most models Nissan Qashqai J11 The cigarette lighter is protected by a 20A fuse, often designated F18 or located near the 12V outlet. Check the exact location using the diagram on the cover of your unit.