Nissan Qashqai J10 first generation (2007–2013) is one of the most popular crossovers on the secondary market, but with age its electronics begin to become capricious. Most often the problems are related to relay - small but critical elements responsible for the operation of headlights, cooling fan, fuel pump and other systems. If your Qashqai suddenly stopped starting, the lights are glitching or the stove is failing, the relay may be to blame.

In this article we will analyze location of all relays in J10, we will learn how to diagnose their malfunctions without a scanner, and also show how to replace the part yourself - with photos, diagrams and unique life hacks for specific problems (for example, why the fan relay often “sticks” after washing the engine compartment). The information is relevant for gasoline (HR16DE, MR20DE) and diesel (M9R) versions.

Where are the relays located? Nissan Qashqai J10?

B Qashqai J10 the relays are distributed over three main blocks:

  • 🔧 Mounting block in the cabin (under the dashboard on the driver’s side) - here are most of the relays responsible for comfort and lighting.
  • 🚗 Block under the hood (next to the battery) - starter relay, fuel pump, fans.
  • ⚡ Additional block behind the glove compartment (on some trim levels) - relay for the climate control system and heated seats.

The most problematic block is salon. To get to it, you need:

  1. Open the driver's door and unscrew the two screws securing the plastic trim under the steering wheel (use Torx T20).
  2. Carefully remove the cover by pulling it towards you (do not force it - the latches are fragile!).
  3. Underneath the trim you will see a gray plastic block with a lid. The cover is removed by pressing the latch on top.
💡

If you can’t remove the relay block cover, try pressing a little on its upper right corner - the plastic tab often “sticks” there.

The relay block is located under the hood to the right of the battery (if you stand facing the car). It is closed with a black plastic cover with the inscription FUSE & RELAY BOX. To open it, pull the two latches on the sides.

Relay decoding Nissan Qashqai J10 according to schemes

Below is a table with the purpose of the relay for salon unit (most in demand). Please note: the location may vary slightly depending on the year of manufacture and configuration (for example, in cars with xenon a relay is added K30 for headlight range control).

Designation Purpose Typical faults
K1 Starter relay Clicks when turning the key, but the starter does not turn
K3 Fuel pump relay The engine does not start, there is no pressure in the fuel rail
K5 Cooling Fan Relay (Low Speed) Engine overheating, fan does not turn on
K7 Low beam relay (left headlight) One headlight does not work, the light blinks
K15 Heated rear window relay The rear window does not heat, the circuit is broken

The following relays are relevant for the unit under the hood:

  • 🔋 K2 — main relay (power supply to the ECU)
  • ⛽ K4 - Cooling fan relay (high speed)
  • 💡 K9 - high beam relay
  • 🔥 K11 — lambda probe heating relay (for diesel M9R)
How to test a relay without a multimeter?

If you don’t have a tester at hand, you can use the “replacement method”: take a known working relay with the same number (for example, K7 for low beam) and install it instead of the “suspect”. If the problem disappears, the relay is to blame. This method works for 90% of cases, except for the starter relay (K1) and fuel pump (K3), where more accurate diagnosis is needed.

Signs of a faulty relay and how to diagnose them

Relay in Qashqai J10 They rarely fail suddenly - they are usually preceded by “symptoms” that drivers ignore. Here top 5 signsthat it's time to check the relay:

  • ⚡ Clicks without operation (for example, when you turn the ignition key, a click is heard, but the starter does not turn).
  • 🔥 Periodic equipment shutdown (sometimes the glass heating works, sometimes it doesn’t).
  • 🚨 Spontaneous switching on (for example, the cooling fan starts when the engine is cold).
  • 💡 Flickering or dim light headlights/dimensions.
  • 🛑 System failure (for example, the headlight washer or horn does not work).

To diagnose the relay you will need multimeter (or at least a control lamp). Verification algorithm:

  1. Remove the relay from the socket (pull it up carefully without twisting it).
  2. Call winding: connect the probes to the terminals 85 And 86 (resistance should be 50–120 Ohm).
  3. Serve 12V on 85 And 86 (possible from a battery) - a slight clicking sound should be heard.
  4. Call contacts: between 30 And 87 there must be resistance 0 ohm (when voltage is applied) and infinity (without voltage).
📊 Which relay in your Qashqai J10 failed most often?
  • Starter (K1)
  • Fuel pump (K3)
  • Cooling fan (K5/K4)
  • Headlights (K7/K9)
  • Other

Special attention pay attention to the cooling fan relay (K5 And K4). B Qashqai J10 they often “stick” due to:

  • 💦 Water ingress after washing the engine compartment (especially if washed with a steam generator).
  • 🔥 Overheating of contacts due to oxidation (typical for cars with mileage >150 thousand km).
  • 🐛 Corrosion on the relay block board (humid climate speeds up the process).
💡

If the cooling fan only turns on at high speed (K4), but does not work on low (K5) - it is not the relay that is to blame, but fan resistor (located next to the fan). Replacing it will cost less than diagnosing the entire unit.

Step-by-step replacement of the relay in Nissan Qashqai J10

Replacing a relay is one of the simplest procedures, but there are nuances here too. For example, in the salon block relays with other ratings cannot be used, even if they are externally identical. Below are universal instructions for any relay.

Torx T20 (for the interior unit)|Phillips screwdriver (for the engine compartment)|Tweezers (for removing the relay)|New relay (original or analogue)|Contact lubricant (optional)-->

Step 1: Disconnect the battery

Remove the negative terminal from the battery (the key is on 10 mm). This will prevent a short circuit when removing the relay. Exception: if you change the fuel pump relay (K3), just remove the fuse F16 (15A) - this will not reset the ECU settings.

Step 2: Remove the faulty relay

Gently pull the relay up, rocking it slightly from side to side. If it “sticks”, do not pull it - use tweezers, prying it by the edge. Do not touch the relay legs with bare hands — fatty traces worsen contact.

Step 3: Install the new relay

Insert the relay until it clicks. Make sure that it sits evenly - distortions will lead to poor contact. If you use non-original relay, check the markings: it should be indicated on the body 12V 30A/40A (depending on type).

Step 4. Check the system operation

Connect the battery and check if the problem is fixed. For example, for a starter relay (K1) just turn the key to position START, for fan relay (K5) — start the engine and wait for operation (at a temperature >90°C).

💡

After replacing the cooling fan relay (K4/K5) Check the coolant level - if the fan has not been running for a long time, an air lock may have formed.

Which relays are better to choose: original or analogues?

Original relays for Qashqai J10 are produced by the company Mitsubishi Electric and are marked with a code Nissan 28520-XXXX (where XXXX - a unique suffix for each type). Their advantages:

  • ✅ Guaranteed compatibility with on-board systems.
  • ✅ Resistant to moisture and temperature changes.
  • ✅ Resource >200 thousand km (under normal conditions).

Minus one - price: original starter relay (K1) will cost 1,200–1,500 rub., analogue - in 300–500 rub.

Among the analogues, the following have proven themselves well:

Brand Article Application Price, rub.
Hella 4RA 007 507-331 Starter relay, fuel pump 450–600
Bosch 0 332 019 150 Fan relay, headlights 350–500
Febi 28520-JD00A Universal (for most relays) 250–400

Important: when buying an analogue, pay attention to rated current. For example, for a fan relay (K4/K5) need current 40A, and for the light relay (K7/K9) enough 20A. Using a relay with a lower current will lead to its rapid failure.

Can I use relays from other cars?

Yes, but with reservations. For example, a relay from Renault Megane 2 (same platform) suitable for Qashqai J10, but only if they match:

- Rated current (20A/30A/40A).

- Type of contacts (usually 4-pin or 5-pin).

- Dimensions (standard 28.5×28.5×20 mm).

Do not use relays from VAZ or Toyota - they often have a different connection scheme.

Typical mistakes when replacing a relay and how to avoid them

Even experienced drivers sometimes make mistakes that lead to repeated breakdowns. Here top 5 misses and how to prevent them:

  • 🔌 Ignoring contact oxidation. If there is green plaque on the relay legs or in the block socket, it must be removed alcohol or contact cleaner (For example, Kontakt 60).
  • 🔄 Mixed up relays. For example, low beam relay (K7) and distant (K9) are identical in appearance, but have a different layout. Always check the labeling!
  • 💧 Lack of moisture protection. After replacing the fan relay (K4/K5) apply to contacts dielectric grease (For example, Liqui Moly Electronic-Spray).
  • 🔋 Forgotten battery terminal. If you do not turn off the minus before replacing, you can burn the fuse or the ECU.
  • 🛠️ Use of force. If the relay does not come out of the socket, do not pull it with pliers - this can damage the unit board. It's better to gently rock it from side to side.
💡

If the problem remains after replacing the relay, check fuses (they often fail at the same time as the relay) and wiring for open circuit or short circuit.

Special occasion: starter relay (K1). If after replacing it the starter still does not turn, check:

  1. Condition fuse F10 (10A) in the salon block.
  2. Voltage at contact 50 ignition switch (must be 12V when turning the key).
  3. Integrity wires from relay to starter (often rubs against the body).

Prevention: how to extend the life of a relay Qashqai J10

Relay in Nissan Qashqai J10 last longer if you follow simple rules:

  • 🚿 Avoid pressure washing the engine compartment. Water enters the relay block and oxidizes the contacts. If you wash it, use it hydrophobic spray (For example, WD-40 Specialist) for protection.
  • ⚡ Check the on-board voltage regularly. Voltage surges (for example, due to a faulty generator) reduce the life of the relay.
  • 🔧 Clean the relay block contacts once every 50 thousand km. Use copper brush or a special cleaner.
  • 🛑 Do not install additional equipment (for example, powerful spotlights) without relays and fuses. Network overload leads to failure of standard relays.

For diesel versions (M9R) It is especially important to monitor the relay:

  • ⛽ K3 (fuel pump) - if it malfunctions, the engine stalls while driving.
  • 🔥 K11 (heating the lambda probe) - if the relay fails, fuel consumption increases.
💡

If your region has a humid climate, remove the relay box once a year and dry it with a hairdryer (temperature no higher than 60°C). This will prevent the boards from corroding.

FAQ: Frequently asked questions about relays in Nissan Qashqai J10

Is it possible to drive with a faulty cooling fan relay?

Short term - yes, but risky. Without a fan, the engine will overheat, especially in traffic jams. If the relay K5 (low speed) doesn't work, but K4 (high speed) is working properly, you can get to the service station, monitoring the temperature. If both relays do not work, call a tow truck.

Why after replacing the starter relay (K1) the car won't start?

Probable reasons:

  1. Defective the starter itself (wear of brushes or bendix).
  2. Problems with ignition switch (no signal is sent to the relay).
  3. Break ground wires from the battery to the body.

Check the voltage at contact 30 relay when you turn the key it should be 12V.

Which relay is responsible for the headlight washer in Qashqai J10?

The headlight washer is controlled by a relay K14 (in the salon block). If the washer does not work, also check:

  • fuse F20 (10A).
  • Washer pump (located in the washer fluid reservoir).
  • Pipes for freezing (in winter).
Can the relay be repaired or is it just a replacement?

Theoretically, the relay can be repaired (clean the contacts, replace the winding), but in practice this is unprofitable. Cost of a new relay (300–600 rub.) is comparable to the cost of repair, and the reliability of the repaired relay will be lower. Exception - oxidized contacts, which can be cleaned and restored.

Where to buy a relay for Qashqai J10 inexpensive?

Optimal options:

  • Exist.ru — original relays with a guarantee.
  • Autodoc - analogues Hella/Bosch at low prices.
  • Disassembly - used relays for 100–200 rub., but without guarantee.

Please check before purchasing article number (for example, for a starter relay - 28520-4M000).