Automatic transmission RE4F03B - one of the most common transmissions in models Nissan Qashqai (J10), X-Trail (T31), Teana (J31/J32) and others. Its reliability directly depends on the quality and timeliness of service, and the key procedure here is changing automatic transmission oil. Many owners mistakenly believe that transmission fluid in “maintenance-free” boxes is filled for the entire service life, but in practice this leads to premature wear of clutches, solenoids and even the valve body.

In this article we will look at step-by-step instructions for changing the oil in RE4F03B, including the choice of oil (original vs analogues), the necessary tools, the nuances of partial and complete replacement, as well as typical mistakes that reduce the life of the box. Particular attention is paid to used models more than 100,000 km, where a specific approach to flushing and diagnostics is required. If you plan to carry out the procedure yourself, here you will find answers to all key questions, from draining old oil to resetting ECU adaptations.

1. When to change the oil in an automatic transmission RE4F03B: official and real terms

Manufacturer Nissan in the manuals for models with RE4F03B often indicates that there is oil in the box does not require replacement (the so-called “filled for life” liquid). However, this approach is relevant only for ideal operating conditions: moderate climate, absence of traffic jams and towing. In reality, even the original oil Nissan Matic S loses its properties already after 60,000–80,000 km.

Experts and service station technicians recommend the following intervals:

  • 🔧 Partial replacement (drain/fill without flushing): every 40,000–50,000 km - suitable for prevention.
  • 🔄 Complete replacement (flush or double flush): every 80,000–100,000 km - Mandatory for mileage over 150,000 km.
  • ⚠️ Emergency replacement: when there are jerks, shift delays or a burning smell from the oil.

Signs that the oil is in RE4F03B requires urgent replacement:

  • 🔴 The oil on the dipstick is dark (black or brown) with metal shavings.
  • 🔴 The box “kicks” when switching from 1st to 2nd gear.
  • 🔴 The appearance of vibrations or hum at speeds of 60–80 km/h.
  • 🔴 Increased fuel consumption (by 10–15%) for no apparent reason.
⚠️ Attention: If the car's mileage exceeds 150,000 km and the oil in the box has never been changed, complete replacement can be harmful. In this case, preliminary diagnostics of the solenoids and valve body is required - a sharp flush can flush out deposits that have clogged the channels and lead to automatic transmission failure.

2. What kind of oil to pour into RE4F03B: original vs analogues

Officially Nissan recommends for RE4F03B only one oil - Nissan Matic S (article KE908-99931 for 1 liter or KE908-99932 for 4 liters). This is a synthetic fluid with a package of additives optimized for the solenoids and clutches of this box. However, there are worthy analogues on the market that meet the specifications JWS 3309 or Dexron III.

Oil type Manufacturer Article Volume (l) Notes
Original Nissan Matic S KE908-99931 1 The best choice for warranty cars
Analogue Idemitsu ATF Type-J 30050011-771 1/4 Complete analogue of the original, often used in service stations
Analogue Ravenol ATF J1A 4014835734517 1 Suitable for harsh environments
Budget Aisin ATF AFW+ ATF-AFWPL4 4 Good option for partial replacement

Important: Do not mix oils from different manufacturers, even if they meet the same specification. For example, Nissan Matic S And Idemitsu Type-J have different additive packages, and mixing them can lead to foaming of the liquid. If you don’t know what was uploaded earlier, it’s better to complete replacement with washing.

📊 What oil do you use for RE4F03B?
  • Nissan Matic S
  • Idemitsu Type-J
  • Ravenol J1A
  • Other (write in comments)
  • I don't know what's in there

3. Tools and consumables for changing oil

To change the oil yourself RE4F03B you will need the following set of tools and consumables:

Fresh oil (8–12 liters for a complete change)

New automatic transmission filter (part number 31726-31X00> or 31726-31X01)

Pan O-ring (31397-31X00)

10 mm square wrench for drain plug

10mm socket for pan bolts

Funnel with extension for filling oil

Drain container (minimum 5 liters)

Torque wrench (optional, for tightening bolts)

Scanner for resetting adaptations (for example, Launch X431 or Delphi DS150E)

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Pay special attention automatic transmission filter. B RE4F03B two types of filters are used:

  • 🔹 Metal mesh (article 31726-31X00) - installed on most models before 2012.
  • 🔹 Paper cartridge (article 31726-31X01) - installed on newer versions of the box.

When purchasing a filter, check its compatibility with your modification RE4F03B. For example, a filter from RE0F10A (box for Nissan Juke) is similar in appearance, but has a different throughput and can lead to oil starvation.

⚠️ Attention: If you are planning complete oil change by displacement method (through cooler hoses), additionally prepare:

  • 🔧 Two hoses with a diameter of 8–10 mm (length 1.5 m).
  • 🔧 Adapter for connecting to cooler fittings.
  • 🔧Assistant to control the oil level during the procedure.

4. Step-by-step instructions: partial oil change

A partial replacement involves draining ~40–50% of the old oil and adding new oil. This method is suitable for prevention and is recommended every 40,000 km. Full algorithm:

Step 1. Warm up the oil

Start the engine and let it run for 5–7 minutes so that the oil in the box warms up to 50–60°C. This will ensure better waste drainage. Switch the automatic transmission selector through all positions (P-R-N-D) with a delay of 2-3 seconds in each.

Step 2. Drain the old oil

  1. Lift the car on a lift or drive it into a pit.
  2. Unscrew the drain plug (with a 10 mm wrench) and drain the oil into a prepared container. B RE4F03B The drain plug is located on the left side of the pan.
  3. Wait until it drains completely (usually ~3.5–4 liters flow out).

Step 3: Replace the filter and seals

After draining the oil:

  1. Unscrew the pan bolts (14 pieces, 10 mm head). Be careful - ~0.5 liters of oil will remain in the pan.
  2. Remove the old filter and install the new one. When installing a paper filter (31726-31X01) make sure the o-ring is seated tightly.
  3. Clean the pan of metal shavings and deposits (you can use carburetor cleaner).
  4. Install a new pan gasket (or apply sealant Loctite 574 to the old one, if it is in good condition).

Step 4. Filling with new oil

Fill oil through the dipstick hole (in Qashqai J10 it is located to the right of the engine). Use a funnel with an extension. Volume for topping up - 3.5–4 liters (exactly as much as merged). After filling:

  1. Start the engine and let it run for 2-3 minutes.
  2. Switch the selector through all modes with a delay of 5 seconds.
  3. Check the oil level with a dipstick - it should be between the marks HOT.
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After a partial replacement, the oil in the box is updated only by 40–50%. To completely update the fluid, you need to repeat the procedure 2-3 times with an interval of 500-1000 km.

5. Complete oil change: displacement method

Complete oil change RE4F03B required for mileage over 100,000 km or if the transmission operates jerkily. This method implies replacing old oil with new oil through the automatic transmission cooling circuit. For the procedure you will need:

  • 🔧 10-12 liters of new oil.
  • 🔧 Assistant for level control.
  • 🔧 Hoses and adapters for connecting to the cooler.

Algorithm of actions:

  1. Drain the old oil through the plug (as in a partial change).
  2. Disconnect the hoses from the automatic transmission cooling radiator (usually they are located to the right of the engine radiator).
  3. Connect one hose to the drain hole and the other to the filler neck.
  4. Start the engine and start adding new oil. The old fluid will be forced out through the drain hose.
  5. Control the color of the leaking oil - as soon as it becomes light (like new), the procedure can be completed.

Important: during repression do not allow the gearbox to operate without oil (the level in the pan should not fall below the minimum). Total oil consumption for a complete change - 8–10 liters.

What to do if the oil is not displaced?

If, when displacing, new oil does not flow or flows out too slowly, check:

1. Is the cooler filter clogged (needs washing or replacement).

2. The hoses are connected correctly (the inlet/outlet may be mixed up).

3. The performance of the automatic transmission oil pump (if it wears out, the pressure drops).

6. Typical mistakes when changing oil in RE4F03B

Even experienced car owners make mistakes that can lead to box failure. Here are the most common:

  • 🚫 Overfilling or underfilling oil - the level must be strictly between HOT on the dipstick. Overfilling leads to foaming and loss of pressure, while underfilling leads to oil starvation.
  • 🚫 Using incompatible oil - for example, Dexron VI instead of Matic S. This leads to destruction of the clutches.
  • 🚫 Late filter replacement — metal shavings from the old filter will get into the valve body and clog the solenoids.
  • 🚫 Tightening the pan bolts without a torque wrench — over-tightening deforms the pallet, under-tightening leads to leaks.
  • 🚫 Ignoring ECU adaptations — after changing the oil, the box requires “training” (resetting adaptations via a scanner).

One of the most dangerous mistakes is washing the box with chemical additives (type Liqui Moly ATF Additive). B RE4F03B With a mileage of over 150,000 km, such flushes often wash away deposits that previously compensated for the wear of the solenoids. The result is that the box stops shifting gears.

⚠️ Attention: If jerking or shifting delays occur after changing the oil, immediately check:

  • Oil level (possibly leaking through the pan gasket).
  • The filter is installed correctly (a skewed filter blocks the oil flow).
  • Condition of solenoids (requires diagnostics with a scanner).

7. Resetting automatic transmission adaptations after changing the oil

After changing the oil in RE4F03B a reset is required (training box). This is due to the fact that the ECU remembers the driving style and wear of the clutches, and after updating the oil, this data becomes irrelevant. Without a reset the following are possible:

  • 🔴 Jerks when switching from 1st to 2nd gear.
  • 🔴 Delays when turning on Drive or Reverse.
  • 🔴 Increased engine speed at idle.

There are two ways to reset adaptations:

  1. Via diagnostic scanner (For example, Launch X431):

    Подключите сканер → Выберите блок "TCM" → Найдите функцию "AT Adaptation Reset" → Подтвердите сброс.
  2. Manual reset (suitable for Nissan Qashqai J10 And X-Trail T31):

    1. Заглушите двигатель.

    2. Нажмите педаль тормоза и удерживайте.
    

    3. Переключите селектор: P → N → D → N → R → N → P (с задержкой 1 секунда в каждом положении).
    

    4. Отпустите педаль тормоза.
    

    5. Заведите двигатель и дайте поработать 5 минут на холостом ходу.

After resetting the adaptations, drive 5–10 km in a gentle mode (without sudden acceleration) so that the box gets used to the new oil.

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If after resetting the adaptations the jerking does not disappear, check the oil for overheating. B RE4F03B At temperatures above 120°C, the oil begins to lose viscosity, which leads to slipping of the clutches. Use a scanner to monitor the automatic transmission temperature (normal: 80–95°C).

FAQ: Frequently asked questions about changing the oil in RE4F03B

❓ Is it possible to fill in oil of a different brand if there is no original one? Nissan Matic S?

Yes, but only if it meets specification JWS 3309 or Dexron III. The best analogues - Idemitsu Type-J or Ravenol J1A. Never use oils labeled Dexron VI or ATF+4 - they are incompatible with clutches RE4F03B.

❓ How much oil is needed for a complete change?

For a complete replacement using the displacement method, you will need 10–12 liters (depending on the degree of contamination of the system). For partial replacement, 4 liters is enough. In a box RE4F03B the total amount of oil is ~7.5 liters, but it is impossible to completely drain it without disassembling it.

❓ Do I need to change the filter every oil change?

Yes, filter be sure to change with every oil change, even partial. Metal filter (31726-31X00) can be washed, but only if it is not deformed and does not show signs of heavy contamination. Paper filter (31726-31X01) can only be replaced.

❓ What happens if you don’t reset the adaptations after changing the oil?

Without resetting the adaptations, the ECU will continue to use the old calibrations, which will lead to:

  • 🔴 Jerks when changing gears.
  • 🔴 Increased wear of friction clutches.
  • 🔴 Deterioration of acceleration dynamics.

In some cases, the box may go into emergency mode (Fail-Safe).

❓ Is it possible to wash the box RE4F03B special additives?

Flushing type Liqui Moly ATF Reiniger or Wynns TransClean absolutely not recommended for boxes with mileage over 100,000 km. They wash away deposits that previously compensated for the wear of the solenoids and valve body. For RE4F03B It is better to use the method of double oil changes at 500 km intervals.