Automatic transmission <em>Nissan Avenir</em>: device, problems and repair

Nissan Avenir - a compact minivan, produced from 1990 to 2005 and popular due to its practicality and reliability. One of the key components of the model was the automatic transmission, which, despite the simplicity of the design, requires careful attention. In this article we will analyze the automatic transmission device Avenir, typical faults, diagnostic methods and repair nuances.

Automatic transmissions on Nissan Avenir are represented by several modifications, the most common of which are RE4F03A And RE4R01A. These boxes are known for their reliability, but over time, even they begin to show “age-related” problems: jerking when switching, oil leaks or complete failure. It is important to understand that Automatic transmission Avenir sensitive to the quality of the transmission fluid and operating mode - ignoring service intervals reduces the service life by 30-40%.

The article will be useful for both novice car owners and experienced mechanics. We will not only list the symptoms of malfunctions, but also give practical recommendations for eliminating them, including step-by-step instructions and tips for choosing spare parts. We will pay special attention to the questions that most often arise among owners: is it possible to tow Avenir with a faulty automatic transmission, how to check the oil level without a dipstick and whether it is worth installing a contract transmission.

Automatic transmission device Nissan Avenir: main components and operating principle

Automatic transmissions installed on Avenir, belong to classic hydromechanical gearboxes with a torque converter. Their design includes several key components:

• 🔄 Torque converter (GDT) — replaces the clutch, transmits torque from the engine to the gearbox and smoothes out jerks.
• ⚙️ Planetary series - is responsible for changing gear ratios (in Avenir usually 4 steps).
• 🛢️ Valve block (valve plate) — the “brain” of the box, which controls switching through solenoids.
• 🔧 Range selection mechanism - connects the selector with the box (in Avenir often suffers from wear on the bushings).

Automatic transmission feature Nissan Avenir is the use electronic control (in later models), which allows you to adapt shifts to your driving style. However, this also makes the box more vulnerable to power surges and sensor failures. For example, a speed sensor (Vehicle Speed Sensor) if it fails, it can cause chaotic shifts or locking in one gear.

It is important to note that the boxes RE4F03A And RE4R01A They have a similar design, but differ in gear ratios and strength of parts. The first was more often installed on models with engines GA16DE And SR20DE, the second - for more powerful versions. At the same time RE4R01A It is considered more “tenacious” due to reinforced clutches, but it also costs more to repair.

Typical automatic transmission malfunctions Nissan Avenir and their symptoms

Automatic transmission service life Avenir with proper operation it is 200-250 thousand km, but after 150 thousand km the first signs of wear may appear. Let's look at the most common problems:

Symptom	Probable Cause	Urgency of repair
Jerks when shifting (especially from 1st to 2nd gear)	Worn clutches, clogged valve body, low oil level	Moderate (may progress)
Power-on delay Drive or Reverse	Worn torque converter, faulty solenoids	High (risk of complete failure)
Oil leakage from under the pan or oil seals	Worn gaskets, cracks in the housing, play in the input shaft	High (leads to oil starvation)
The box "kicks" when cold, but returns to normal after warming up	Thickened oil, worn torque converter	Low (requires oil change)

One of the most insidious malfunctions is Worn torque converter pump wheel bushing. In this case, the transmission can operate normally at idle, but under load (for example, when overtaking), vibrations and knocks appear. The problem can only be diagnosed after removing the gas turbine engine, which requires disassembling the box.

⚠️ Attention: If after changing the oil in the automatic transmission Avenir There were jerks or the transmission stopped switching - probably incompatible oil was filled in. Nissan recommends using only Matic-D or Matic-J (depending on the year of manufacture). Synthetic oil type ATF+4 can destroy clutches!

Another common problem is throttle position sensor malfunction (TPS). When it fails, the transmission ECU receives incorrect data about the engine load, which leads to delayed or abrupt shifts. The sensor is checked with a multimeter: the resistance between the contacts should change smoothly when you press the gas pedal.

Automatic transmission diagnostics Nissan Avenir: where to start?

Before starting repairs, it is necessary to accurately determine the cause of the malfunction. Automatic transmission diagnostics Avenir includes several stages:

1. Checking the oil level and condition - even if there are no leaks, the oil can degrade over time. The color should be reddish, without a burnt smell or metal shavings.
2. Reading error codes - on models with OBD-II (after 1996) this can be done through the diagnostic connector. Codes P0730–P0799 relate to the transmission.
3. Mechanical check — play in the driveshaft, condition of the engine mounts, integrity of the selector cable.
4. Test drive — assessment of the behavior of the box during acceleration, braking and mode switching (P→R→N→D).

To read error codes on early models Avenir (until 1996) the "blinking the light bulb" method is used (Check Engine). To do this:

1. Вставить ключ в замок зажигания, но не поворачивать.
2. Нажать и удерживать педаль газа.
3. Поворачивать ключ в положение "ON" (не заводить двигатель).
4. Считать количество миганий лампочки (например, 3 длинных + 4 коротких = код 34).

Decoding popular codes for automatic transmission Avenir:

• 🔴 34 — speed sensor malfunction (VSS).
• 🔴 42 — problem with the gear shift solenoid.
• 🔴 43 — malfunction of the selector lever position sensor.

Automatic transmission repair Nissan Avenir: What can you do yourself?

Not all automatic transmission faults require service. Some work can be done with your own hands if you have tools and minimal skills. Let's look at step-by-step instructions for the most common cases.

1. Changing the automatic transmission oil and filter

This is the simplest and most effective procedure that is recommended every 60 thousand km (or once every 2 years). For Avenir you will need:

• 🛢️ 6-8 liters of oil Nissan Matic-D (or equivalent Idemitsu ATF Type-J).
• 🔧 Automatic transmission filter (article for RE4F03A — 31726-31X00).
• 🛠️ Pallet gasket (article no. 31397-31X02).
• 🔩 10 mm wrench and 14 mm socket for pallet bolts.

Warm up the box (drive 10-15 km)

Raise the car on a lift or overpass

Prepare a container for draining the oil (at least 5 liters)

Mark the position of the tray relative to the body (for correct installation)

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Replacement process:

1. Drain the old oil through the plug in the pan (on Avenir it is located on the side).
2. Unscrew the pan, remove the old filter and clean the magnets from metal shavings.
3. Install a new filter and gasket, tighten the bolts crosswise (torque 10 Nm).
4. Fill in new oil through the dipstick (on some models there is no dipstick - filling is carried out through the control hole).
5. Warm up the box, check the oil level with the engine running (should be between the marks HOT).

2. Replacement of solenoids (electric valves)

If the transmission is “stupid” when shifting or engages the wrong gear, the solenoids may be to blame. On Avenir they are located in the valve body and can be replaced without completely disassembling the box. You will need:

• 🔧 Set of socket wrenches.
• 🛠️ Solenoid kit (article for RE4R01A — 31601-40X00).
• 🧲 Magnet for removing chips from the pallet.

Replacement algorithm:

1. Drain the oil and remove the pan.
2. Unscrew the valve body (10 bolts), disconnect the solenoid connectors.
3. Remove the old solenoids and install new ones (pay attention to the O-rings!).
4. Reassemble everything in reverse order, add oil and carry out adaptation (training) of the box.

⚠️ Attention: After replacing the solenoids, it is necessary to reset the adaptive settings of the automatic transmission. To do this:

1. Отключить клемму аккумулятора на 10 минут.
2. Подключить обратно, запустить двигатель.
3. Нажать педаль тормоза и поочерёдно включить все режимы селектора (P→R→N→D→L), задерживаясь в каждом на 5 секунд.
4. Проехать 10-15 км в щадящем режиме для автоматического обучения.

Contract automatic transmission vs. renovation: what to choose for Nissan Avenir?

If the transmission requires major repairs, owners often face a choice: restore the old automatic transmission or install a contract one. Let's look at the pros and cons of each option.

Criterion	Repairing your automatic transmission	Installation of a contract automatic transmission
Cost	From 30 to 80 thousand rubles. (depending on the amount of work)	From 50 to 120 thousand rubles. (including installation)
Deadlines	3-7 days (if spare parts are available)	1-2 days (if the box is in stock)
Reliability	Depends on the quality of repairs and new parts	Depends on mileage and contract box history
Warranty	1-2 years (for official services)	3-6 months (less often - a year)

When choosing a contract automatic transmission for Avenir pay attention to:

• 📝 Mileage — optimally up to 100 thousand km.
• 🔧 Oil condition - if it is black or smells like burning, the box is worn out.
• 📋 Documents — Availability of a warranty card and service history.
• 🚗 Compatibility - the box must be from the same year and model (for example, RE4R01A from Nissan Primera P11 not suitable for Avenir!).

If you decide to repair your box, check with the technician which parts will be replaced. The minimum overhaul kit includes:

• 🔄 Friction discs (kit for RE4F03A — 31700-31X00).
• 🛡️ Steel wheels (item no. 31701-31X00).
• 🔧 Bearings and seals (especially the primary and secondary shafts).
• 🛢️ Hydraulic unit sealing rings.

Operation of automatic transmission Nissan Avenir: how to extend the resource?

Automatic transmission service life Avenir directly depends on driving style and regularity of maintenance. The following recommendations will help avoid premature wear:

• 🚦 Avoid abrupt starts — torque converter Avenir does not like high loads from a place. Accelerate smoothly.
• 🔄 Don't change the selector while driving - switching on Reverse or Parking when moving forward, it leads to breakdown of the range selection mechanism.
• 🛢️ Monitor the oil level — even a small leak (100-200 ml) can cause oil starvation and wear of the clutches.
• 🚗 Do not tow trailers without automatic transmission cooling - on Avenir There is no standard oil cooler, so install an additional one when towing.
• ❄️ Warm up the box in winter — before starting to drive, let the car run for 2-3 minutes, then drive 500 meters without sudden acceleration.

Pay special attention towing Avenir with a faulty automatic transmission. If the box gets stuck on the road, you can only transport the car:

• 🚛 On a tow truck (the best option).
• 🔗 With hanging drive wheels (if towing on a flexible hitch).
• 🚗 On a rigid coupling at a speed of no more than 30 km/h and at a distance of up to 50 km (only for boxes with a working torque converter!).

⚠️ Attention: If in automatic transmission Avenir There is no oil at all (for example, due to a torn radiator), towing even short distances will lead to the destruction of the planetary gear and clutches. In this case, a tow truck is the only safe option.

Another important aspect is diagnostics by sounds. Unusual noises from the box may indicate problems:

• 🔊 Noise in neutral - wear of the input shaft bearing.
• 💥 Knock when switching — play in the torque converter or wear of the planetary gears.
• 🔄 Noise when coasting — malfunction of the overrunning clutch of the gas turbine engine.

FAQ: Frequently asked questions about automatic transmission Nissan Avenir

Is it possible to fill it into an automatic transmission? Avenir Isn't the oil from Nissan?

Yes, but only certified analogues. For RE4F03A/RE4R01A fit:

• Idemitsu ATF Type-J - complete analogue Nissan Matic-J.
• Ravenol ATF J Fluid — German oil with improved anti-friction properties.
• Mobil ATF 3309 - a budget option, but requires more frequent replacement.

Absolutely cannot be used Dexron III/VI or ATF+4 - they are incompatible with clutches Nissan!

How to check the oil level in an automatic transmission Avenir, if there is no dipstick?

On some modifications Avenir (for example, with an engine SR20DE) the dipstick is missing. The check is carried out through the inspection hole:

1. Warm up the box to operating temperature (drive 10-15 km).
2. Place the car on a flat surface.
3. Turn off the engine, unscrew the control plug (located on the side of the box body).
4. The oil should flow out in a thin stream. If it does not flow, add it through the filler hole.

The normal level is when the oil begins to drip at a temperature of 70-80°C.

How much does it cost to overhaul an automatic transmission? Avenir?

The cost depends on the region and scope of work:

• Partial renovation (replacement of solenoids, clutches) - 25-40 thousand rubles.
• Major renovation (replacement of all worn parts) - 50-80 thousand rubles.
• Replacing the torque converter — 15-25 thousand rubles. (depending on model).

In Moscow and St. Petersburg, prices are 20-30% higher than in the regions. There is no point in saving on repairs - cheap spare parts or an unqualified technician can lead to repeated breakdowns after 10-20 thousand km.

Is it possible to ride on Avenir with the "Check AT" light on?

For a short time (before service) it is possible, but with caution. light bulb Check AT lights up when:

• Critical drop in oil level.
• Faulty solenoids or sensors.
• Overheating of the box (oil temperature above 120°C).

If the light flashes, stop immediately and turn off the engine! Further movement may lead to destruction of the clutches. Check the oil level and contact service for diagnostics.

What spare parts for automatic transmission Avenir is it better to buy: original or analogues?

For critical parts (clutches, solenoids, torque converter), the original or high-quality analogues are recommended:

• Clutches — Nissan 31700-31X00 or Aisin AFW-100.
• Solenoids — Nissan 31601-40X00 or Beck Arnley 072-9030.
• Bearings — NSK or KOYO (Japanese brands).

For gaskets, seals and small parts can be used Febi, Corteco or Elring. Avoid Chinese spare parts without a brand - they often fail after 10-20 thousand km.