Nissan Almera G15 is a popular sedan, but even in such a reliable car, owners face typical problems. One of them is the failure of heated seats, which is especially important in the cold season. Moreover, the malfunction can manifest itself in different ways: from a complete lack of response to the button to operation only at one heating level.

In this article we will look at all the possible reasons why the heated seats stopped working. Almera G15 (including restyled versions 2016–2019), and we will also give step-by-step instructions for diagnostics and repair. You will learn how to check fuses, relays, heating elements and the control unit without visiting a service center, and also when to contact an electrician.

1. Typical signs of heated seat malfunction

Before you begin repairs, it is important to accurately identify the symptoms. On Nissan Almera G15 Heated seats can fail in the following ways:

  • 🔴 Complete lack of reaction — the button does not light up, the heating does not turn on at any level.
  • 🟡 Only one level works - for example, only maximum heating (3rd stage), and 1st and 2nd do not react.
  • 🔄 Spontaneous shutdown — the heating turns on, but turns off after 5–10 minutes.
  • ⚡ Short circuit — when you press the button, the fuse is triggered or the relay is knocked out.
  • 🔥 Local overheating — one seat area gets hotter than the rest (risk of the upholstery melting).

If the heating stops working on both seats at once, the problem is most likely in the common fuse, relay or control unit. If faulty only one seat - the heating element, thermal relay or wiring under the chair is to blame.

⚠️ Attention: If you hear a burning smell or smoke when you turn on the heating, immediately turn off the system and do not use it until repaired! This is a sign of a short circuit or melting of the heating element, which can lead to a fire.

2. Fuses and relays: first check

Let's start with the simplest thing - checking fuses and relays. B Nissan Almera G15 The heated seats are controlled by a separate fuse and relay located in interior mounting block (under the dashboard on the driver's side).

Here are the items you need to check:

element Denomination Location Symptoms of a problem
Heated seat fuse 15A Interior fuse box, socket F37 Burnt out (the broken thread is visually visible)
Seat heating relay — Interior relay block, position R12 Doesn't click when turned on, contacts are melted
Comfort control unit fuse 10A Interior fuse box, socket F22 Responsible for powering the heating buttons

How to check:

  1. Open the cover of the mounting block (press the latch at the bottom of the dashboard on the driver's side).
  2. Remove the fuse F37 and visually inspect the thread - if it is broken, replace it with a new one same denomination.
  3. Check relay R12: When the heating is turned on, a click should be heard. If it is not there, swap the relay with a known working one (for example, with a heater fan relay).
  4. If after replacement the fuse blows again, the system short circuit, wiring diagnostics are required.
📊 What have you already tried to do to repair the heating?
  • Changed the fuse
  • Checked the relay
  • Removed the seat
  • Contacted the service
  • Didn't do anything

3. Diagnostics of the button and control unit

If the fuses and relays are good, but the heating does not work, the next weak point is power button or comfort control unit. On Almera G15 The heating buttons are located on the center console (next to the gearbox selector) and often fail due to moisture or contact oxidation.

How to test a button:

  • 🔧 External inspection — remove the button (pry up the plastic panel with a screwdriver) and check for corrosion or dirt.
  • 📍 Testing with a multimeter - in resistance test mode (200 Ohm) measure the contacts of the button when pressed. If the resistance does not change, the button is faulty.
  • 🔌 Power check - connect the multimeter in mode DC 20V to the button contacts. When the ignition is on there should be 12V.

If the button is working, but the heating does not turn on, the problem may be comfort control unit (aka BCM — Body Control Module). This unit is responsible for the operation of heating, mirrors, glass and other systems. Signs of its malfunction:

  • 🚨 Several systems do not work at once (for example, heating + electric mirrors).
  • 🔄 Heating turns on spontaneously or does not turn off.
  • 💡 An error light appears on the dashboard U1000 (tire fault CAN).
⚠️ Attention: If you suspect a malfunction BCM, do not try to repair it yourself! This unit requires flashing or replacement at a service center with diagnostic equipment. Improper intervention can damage other vehicle systems.
How to remove the heating button without damage?

Carefully pry off the panel with the buttons with a flat-head screwdriver (wrap it with electrical tape so as not to scratch the plastic). Disconnect the connector and remove the button. Do not pull on the wires - you may damage the contacts!

4. Checking heating elements and thermal relays

If power is supplied to the button, but heating does not work, the problem may lie in heating elements (spirals inside the seat) or thermostat (thermal fuse). On Almera G15 Each seat is equipped with 2 heating elements (for the back and bottom) and 1 thermostat, which turns off the system when it overheats.

How to diagnose:

Remove the seat (unscrew the 4 bolts in the corners)

Disconnect the connectors from the heating elements

Test the coils with a multimeter (resistance should be 1–5 Ohms)

Check the thermostat (at room temperature it should pass current) -->

Detailed instructions:

  1. Removing the seat:
    • Unscrew 4 bolts seat mountings (under plastic plugs).
    • Disconnect the heating and airbag power connectors (if equipped).
    • Carefully remove the seat and turn it over.
  2. Continuity of heating elements:
    • On the back and bottom of the seat, find 2 connectors with wires to heating elements.
    • Ring each element with a multimeter in the mode 200 Ohm. A working spiral should show 1–5 Ohm. If resistance 0 ohm - short circuit if ∞ - break.
  3. Checking the thermostat:
    • The thermostat is usually located next to the backrest heating element.
    • At room temperature it must pass current (resistance 0 ohm). If you heat it with a hairdryer, the resistance should become ∞ (open circuit).

If the heating element is faulty, it can be replaced separately (part number for Almera G15: 28550-4M000 for the driver, 28550-4M001 for the passenger). The thermal relay is also sold separately (article: 28555-4M000).

💡

Before buying a new heating element, check its resistance in the store - sometimes you come across defective spirals with a break.

5. Wiring problems: where to look for an open or short circuit

A common cause of heating failure is wiring damage under the seat. The wires fray due to the constant movement of the chair, oxidize or break. On Almera G15 especially vulnerable:

  • 🔌 Power connector under the seat (often oxidizes or comes off).
  • 🔗 Ground wire (attached to the body under the seat, may fall off).
  • 📉 Wires under the rug (they rub against metal parts).

How to check wiring:

  1. Disconnect the heating connector under the seat and inspect the contacts for oxidation (clean only alcohol or special liquid, not sandpaper!).
  2. Test the wires with a multimeter from the connector to the control unit:
    • Red wire — +12V (food).
    • Black wire — mass.
    • Yellow/green — signal from the button.
  • Check the integrity of the insulation - if the wires are exposed, insulate them heat shrink tube.
    • ⚠️ Attention: If during testing the multimeter shows 0 ohm between the positive wire and ground - in the circuit short circuit. In this case, you cannot use heating until the problem is resolved!

    6. When service assistance is required

    Not all seat heating malfunctions are Nissan Almera G15 you can fix it yourself. Contact the service if:

    • 🔧 The control unit is faulty (BCM) — flashing or replacement is required.
    • 📶 Bus problems CAN - errors U1000, B2555 or other codes related to data exchange.
    • 🔥 Short circuit in the circuit, which cannot be localized.
    • 🛠️ Replacement of heating elements with disassembly of upholstery required (risk of damage to airbags).

    Average cost of repairs in service:

    Type of work Cost (RUB) Time (hours)
    Electrical diagnostics 1 500 – 2 500 0.5–1
    Replacing the heating element 3 000 – 5 000 2–3
    Repair/replacement BCM 8 000 – 15 000 3–5
    Eliminating short circuit 2 000 – 4 000 1–2

    Important: If you have heated seats Almera G15 stopped working after washing or rain, corrosion of the connectors under the seat is possible. In this case, only a complete inspection of the contacts with cleaning and treatment with a special lubricant will help (for example, Liqui Moly Electronic-Spray).

    7. Prevention: how to extend the life of heated seats

    To avoid heating problems, follow these simple rules:

    • 🚗 Don't turn the heat up to maximum longer than 20 minutes - this shortens the life of the heating elements.
    • 💧 Avoid moisture on buttons and connectors (for example, when washing the interior).
    • 🔌 Check the connectors periodically under the seat (remove the seat and clean the contacts once a year).
    • ❄️ Do not use heating in temperatures below -20°C — a sudden temperature change can damage the coils.

    If the heating begins to work worse (it warms up more slowly or turns off spontaneously), this is the first sign of wear on the heating elements. In this case, it is better to replace them in advance to avoid short circuits.

    💡

    The most common reason for heating failure is Almera G15 - blown fuse F37 (15A) or faulty relay R12. Check them out first!

    FAQ: Frequently asked questions about heated seats Nissan Almera G15

    🔍 Why does heating only work on level 3, but levels 1 and 2 don’t turn on?

    This is a typical sign of a problem control buttons or resistor block in the chain. The button contains resistors that set the heating level. If they burn out, only the maximum mode (direct contact closure) works. The solution is to replace the button or repair it (soldering resistors).

    ⚡ Is it possible to drive with heated seats not working?

    Yes, this is not a critical malfunction, but there are some nuances:

    • If the problem is fuse or relay - You can drive without restrictions.
    • If in a chain short circuit - you risk burning the wiring or BCM.
    • If faulty thermostat, the heating may overheat and melt the upholstery.

    We recommend that the problem be resolved within 1–2 weeks.

    🔧 What multimeter is needed to diagnose heating?

    An inexpensive multimeter with the following functions is enough:

    • Chain continuity test (with sound signal).
    • Resistance measurement (200 Ohm).
    • Voltage measurement (DC 20V).

    Suitable models: DT-830B, Mastech MS8229, UNI-T UT33D. The main thing is that the probes are thin for convenient work with the connectors.

    💰 How much does a new heating element cost for Almera G15?

    Prices for original and similar spare parts (2026):

    • Original (Nissan) — 28550-4M000 (driver's seat) or 28550-4M001 (passenger): 4,000 – 6,000 rub.
    • Analogs (Febi, Valeo, Delphi) — 2,500 – 4,000 rub.
    • Thermal relay — 28555-4M000: 800 – 1,500 rub.

    When purchasing, check whether the item is suitable for your year of manufacture (pre-restyle or restyle).

    🔥 Is it possible to repair a burnt heating element?

    Theoretically yes, but not recommended. The spiral inside the element consists of a special alloy, which, when repaired (soldered), loses uniform heating. This may lead to:

    • Local overheating and melting of the upholstery.
    • Short circuit.
    • Rapid re-failure.

    It is better to replace the entire element - it is more reliable and safer.