Fuses and relays <em>Nissan X-Trail T32</em> (2014–2021): diagrams, location and decoding

Nissan X-Trail T32 is one of the most popular crossovers on the Russian market, but even such a reliable car periodically has problems with electrical equipment. The reason for this is often burnt out fuses or out of order relay. If your cigarette lighter does not work, the headlights refuse to turn on, or the center console has stopped opening, the first thing you should check is these elements.

In this article you will find full decoding of all fuses and relays for X-Trail T32 (restyling 2017 inclusive), including their location, ratings and typical symptoms of malfunctions. We'll also tell you how to properly diagnose and replace components without risking damage to your vehicle's electronics. For convenience, the information is structured into blocks: interior mounting block, block under the hood and additional relays.

We paid special attention hidden pitfalls, which are not written about in official manuals - for example, why the cigarette lighter fuse often burns due to the connection of non-standard gadgets, or how to distinguish a relay malfunction from a wiring problem. The information is relevant for all trim levels, including X-Trail T32 with petrol (QR25DE, MR20DD) and diesel (R9M, K9K) engines.

Where are the fuse and relay boxes located? Nissan X-Trail T32

B X-Trail T32 There are three main locations for installing fuses and relays:

• 🔧 Cabin mounting block — located to the left of the steering column, behind the plastic cover. The fuses of most consumers are concentrated here (lighting, multimedia, climate control).
• 🚗 Block under the hood - located next to the battery (on some versions - under a plastic cover near the windshield). Responsible for power circuits: starter, generator, cooling fans.
• ⚡ Additional relays - can be located in different parts of the car (for example, the fuel pump relay under the rear seat in diesel versions).

To gain access to the interior unit, just pry off the cover with a screwdriver or a flat object - it is secured with latches. In the unit under the hood, you will first need to remove the battery terminal (negative) to avoid a short circuit. The block covers usually have a diagram with symbols, but it is not always readable, especially after several years of operation.

Important: on restyled versions X-Trail T32 (from 2017) the location of some relays may differ. For example, the cooling fan relay is moved closer to the radiator, and the system fuse Around View Monitor appeared only in top trim levels. We have taken these nuances into account in the transcript below.

Decoding the fuses of the cabin unit Nissan X-Trail T32

The interior mounting block contains fuses for most consumers with whom the driver interacts daily. Below is a table with the purpose of each element, its rating and symptoms of malfunction.

Fuse no.	Denomination (A)	Purpose	Symptoms of a problem
1	10	Audio system, navigation, NissanConnect	The radio does not work, the screen does not turn on, there is no sound
7	15	Cigarette lighter, 12V socket in trunk	Cigarette lighter does not work, devices do not charge
10	10	Climate control unit	The temperature is not regulated, the stove fan does not work
15	10	Parking sensors (Around View Monitor)	Doesn't show cameras, beeps when moving backwards
20	7.5	Interior lighting, trunk, mirrors	The interior lights don't light, the door lights don't work.

Please note: fuse No. 7 (15A) - the most "problematic" in X-Trail T32. It often burns out due to connecting powerful devices (for example, car vacuum cleaners or compressors) to the cigarette lighter. If you use such gadgets, we recommend installing splitter with separate fuse or connect directly to the battery through the appropriate terminals.

⚠️ Attention: fuse No. 1 (10A) is responsible not only for the audio system, but also for the operation of the system NissanConnect. If after replacing it the radio does not work, check the fuse No. 25 (7.5A) — it is responsible for powering the antenna amplifier. Without it, there may be no signal even with a working radio.

Decoding the fuses and relays of the unit under the hood

Block under the hood Nissan X-Trail T32 is responsible for power circuits and critical systems: engine starting, battery charging, fan operation. Here fuses of increased rating are used (from 20 to 100A), and relays have a standard size ISO 280.

The peculiarity of this block is the presence fuse links (they are often confused with fuses). For example, insert F1 (80A) protects the generator circuit, and F3 (60A) — electric power steering circuit. Replacing them requires care: when installing, it is important not to reverse the polarity, otherwise you can burn the diode bridge of the generator.

Designation	Denomination (A)	Purpose	Consequences of a malfunction
F1	80	Generator, battery charging circuit	The battery does not charge, the lamp is on BATT on the dashboard
F4	50	Electric power steering (EPS)	The steering wheel becomes heavy, the error light is on EPS
R1	—	Main cooling fan relay	Engine overheating, fan does not turn on
F7	30	Fuel pump (petrol), glow plugs (diesel)	The engine does not start or stalls after 2-3 seconds

Relay R1 (cooling fan) - a common cause of overheating X-Trail T32 in traffic jams. If the fan does not turn on when the temperature reaches 100°C, check:

1. The relay itself (can be temporarily replaced with a known good one from the interior unit, for example, a heated seat relay).
2. fuse F2 (40A) — he is responsible for the fan control circuit.
3. Coolant temperature sensor (located on the thermostat).

⚠️ Attention: On diesel versions X-Trail T32 with engine R9M fuse F7 (30A) protects the glow plug circuit. If after replacing the fuse the spark plugs still do not work, check the relay R3 (it is located under the plastic cover next to the battery) and the integrity of the wiring to the spark plugs. Often the problem lies in oxidized contacts.

Typical faults and their diagnosis

Owners Nissan X-Trail T32 often encounter repeated blowing of the same fuses. This indicates more serious problems in the electrical circuit. Let's look at the most common cases:

• 🔌 Cigarette lighter fuse (No. 7, 15A) - burns due to:
  • Connecting devices with consumption >10A (for example, car refrigerators).
  • Short circuit in the socket wires (often after washing or exposure to moisture).
  • Malfunction of the cigarette lighter itself (melted contacts).
• 💡 Interior lighting fuse (No. 20, 7.5A) - burns out when:
  • Installing LED lamps with incorrect polarity.
  • Short circuits in door controllers (for example, after replacing door seals).
• 🚗 fuse Around View Monitor (No. 15, 10A) - fails due to:
  • Water getting into the chamber connectors (especially after pressure washing).
  • Malfunction of the camera control unit (located under the front passenger seat).

For diagnostics use multimeter in call mode:

1. Remove the fuse and check the circuit for a short circuit (resistance between "+" and ground should be >1 Ohm).
2. If there is no short circuit, turn on the ignition and check the voltage at the fuse socket contacts (there should be 12V at one of the contacts).
3. If there is no voltage, the problem is in the wiring or control unit.

Case study: If your seat heating stops working and the fuse No. 12 (20A) OK, check the relay R5 in the salon block. Often the relay contacts become oxidized and can simply be cleaned with an eraser or WD-40. Also inspect the connector under the seat - there may be frayed wires there.

How to test a relay without replacing it

Connect a multimeter to pins 85 and 86 of the relay (winding). When 12V is supplied, a clicking sound should be heard and contacts 30 and 87 should close. If there is no click, the relay is faulty. If there is a click, but the contacts do not close, replace the relay.

How to properly replace a fuse or relay

Replacing fuses in Nissan X-Trail T32 It seems like a simple procedure, but there are nuances that will help you avoid serious damage:

1. Turn off the ignition and remove the terminal from the battery (especially when working with the unit under the hood). This will prevent voltage surges that can damage the control units.
2. Use only original rated fuses. Installing a fuse with a higher rating (for example, 20A instead of 10A) will cause the wiring to melt.
3. To remove fuses use special tweezers (usually included with the machine). If it is not there, you can carefully pry the fuse off with a small screwdriver, but without excessive force - the plastic latches are fragile.
4. Check the socket contacts for the presence of oxidation. If they are green or black, clean them with rubbing alcohol and a soft brush.

Relay replacement algorithm:

1. Take a photo of the location of the relay before removing it (so as not to confuse it when installing it back).
2. Pull the relay up and it should come out without effort. If it is jammed, do not pull by force: check if there is a fixing bracket.
3. Install a new relay of the same type (note the markings - e.g. ISO 280-4 or ISO 280-5).
4. After replacing, check the operation of the system: for example, if you replaced the fan relay, wait until the fan turns on (you can force the engine to warm up to 95°C).

⚠️ Attention: On X-Trail T32 with the system ProPILOT (Available from 2019) Replacing fuses in the under-hood block may reset camera and radar calibrations. After replacement, it is recommended to perform a recalibration procedure at a service station - otherwise the adaptive cruise control system will not work correctly.

Where to buy fuses and relays for Nissan X-Trail T32

For X-Trail T32 Standard fuses and relays are suitable, which can be purchased at any auto store. However, there are several nuances:

• 🛒 Fuses:
  • Original Nissan (article 28511-JK00A for typing) - the most reliable, but expensive.
  • Analogues Bosch, Hella or Valeo - not inferior in quality, but 2-3 times cheaper.
  • Chinese no-name coins are a risky option, as they may have a low denomination.
• 🔄 Relay:
  • For critical systems (fan, fuel pump), take the original (25230-4M000 for fan relay).
  • For secondary ones (heated seats, power windows), analogues are suitable Omron or Panasonic.

The cost of fuses is from 5 to 50 rubles per piece (depending on the rating), relays are from 200 to 1500 rubles. The table below contains article numbers of original parts for the most popular items:

Detail	Article	Approximate price (RUB)	Where is it used?
Fuse set (10 pcs.)	28511-JK00A	800–1200	All chains
Cooling fan relay	25230-4M000	1200–1800	Block under the hood
Fuse link (80A)	24060-EA20A	600–900	Generator circuit
Fuel pump relay	25230-31U00	900–1300	Block under the hood (diesel/gasoline)

It is better to buy parts in trusted stores:

• Exist.ru — a large range of original and analog spare parts.
• Autodoc — convenient selection by VIN code, often there are discounts.
• Official dealers Nissan - warranty on parts, but prices are 20-30% higher.

Advice: When purchasing a relay, pay attention to contact type — they come with a silver coating (they last longer) and regular ones. Also check that the relay is hermetically sealed (especially for the block under the hood), otherwise it will quickly oxidize from moisture.

Frequently asked questions about fuses Nissan X-Trail T32

Why does it blow again after replacing the cigarette lighter fuse?

Most likely the problem is a short circuit. Common reasons:

• The wires of the 12V socket are damaged (check for kinks near the connector).
• Moisture or debris has entered the socket (dry with a hairdryer).
• A high consumption device is connected (for example, a 220V inverter). Try turning off all gadgets and check the circuit with a multimeter.

If the fuse burns even without a load, look for a short in the wiring from the outlet to the fuse box.

Is it possible to install a fuse of a higher rating if the original one constantly blows?

Absolutely not! An increase in denomination will lead to:

• Melting of wiring (it is designed for a certain current).
• Fire of plastic elements of the interior.
• Failure of the control unit (for example, BCM when the lighting circuit is overloaded).

If the fuse blows, you need to find and eliminate the causerather than masking the problem.

How to test a relay with a multimeter without removing it from the unit?

You can check voltage at control contacts:

1. Turn on the ignition.
2. Connect one multimeter probe to the contact 86 (mass), the other - to 85 (management). Should be 12V.
3. If there is no voltage, there is a problem in the control circuit (for example, the sensor or control unit is faulty).

To check the power part you will have to remove the relay and ring the contacts 30 And 87.

Where is the central locking fuse located?

B X-Trail T32 The fuse controls the central locking No. 23 (10A) in the salon block. If it is intact, but the locks do not work, check:

• Relay R7 in the salon block.
• fuse No. 30 (7.5A) — he is responsible for the body control unit (BCM).
• The battery is in the key fob (often the problem lies in a dead battery).

What should I do if the radio stops working after replacing the fuse?

Probable reasons:

1. Fuse burned out No. 1 (10A) or No. 25 (7.5A) (antenna amplifier).
2. The radio settings have been reset (you must enter an activation code). The code is usually located in the service book or on a sticker under the glove compartment.
3. The connector on the rear panel of the radio has come loose (check if the wires have fallen out when replacing the fuse).

If the radio does not turn on at all, check the voltage on the yellow wire (+12V constant) and red (+12V when the ignition is on).