Automatic transmission <em>Nissan Patrol</em>: device, problems and solutions

Nissan Patrol is a legendary SUV whose reputation for reliability largely depends on its transmission. Automatic transmissions (automatic transmissions) installed on the model Y61 (1997–2016) and Y62 (since 2010), they are durable, but have their own “weak points”. In this article we will analyze the automatic transmission device Patrol, typical malfunctions, diagnostic methods and maintenance nuances - no template advice, only specific facts.

Feature Patrol — the use of different types of automatic machines depending on the generation and engine. On diesel ZD30 and gasoline TB48 4- and 5-speed torque converter automatic transmissions were installed, and modern Y62 with motor VK56VD got a 7-speed JR710E from Jatco. Each of them requires its own approach to operation. Next is a detailed analysis.

Types of automatic transmission on Nissan Patrol by generation

On Patrol Y61 (1997–2016) three main types of automatic transmissions were installed:

• 🔧 RE4R03A — 4-speed automatic transmission for diesel TD42 and early ZD30. It has a simple design, but is sensitive to overheating.
• 🔧 RE5R05A — 5-speed version for petrol TB48 and later ZD30. More reliable, but requires high-quality oil.
• 🔧 TC-M17A — a rare modification for all-wheel drive versions, compatible with transfer case QLX-100A.

On Patrol Y62 (since 2010) used:

• 🔧 JR710E — 7-speed automatic transmission from Jatco, adapted for motor VK56VD (5.6 l). Equipped with a system Adaptive Shift Control, but has problems with mechatronics.

Key Difference Y62 — electronic control of switching, which complicates diagnostics without a scanner. At the same time Y61 with RE4R03A/RE5R05A easier to repair, but less comfortable in the city.

Design and operating principle of automatic transmission Patrol

All automatic transmissions Nissan Patrol built according to the classical scheme with torque converter, planetary gears and hydraulic control. However, there are nuances:

B RE4R03A/RE5R05A gear shifting is carried out due to the oil pressure created oil pump. The main problems are related to:

• 🔥 Overheating - when towing or off-roading, the oil temperature may exceed 120°C, which leads to degradation of the clutches.
• 🛢️ Oil contamination — wear products clog the solenoids and channels of the valve body.
• ⚙️ Bushing wear - especially in the clutch pump and drum C1.

B JR710E added electronic control via mechatronics (solenoid block + ECU). Here are the critical ones:

• 🤖 Adaptation errors — the box “learns” the driving style, but failures lead to jerks.
• 🔌 Oxidation of contacts — moisture enters through the mechatronics connectors.
• 📉 Voltage sags — if the battery is weak, the box goes into emergency mode.

Important: The JR710E does not have a traditional dipstick for checking the oil - the level is controlled through the service hole at temperature 45–50°C.

Typical automatic transmission malfunctions Patrol and their symptoms

Problems with automatic transmission Patrol appear differently depending on the box model. Below is a table of symptoms and probable causes:

On Y61 Most often they fail:

• 🔥 Torque converter — cracks in the blades or wear of the locking clutch.
• 🛠️ Hydraulic unit - clogged channels lead to pressure floating.
• 🔄 Planetary bearings — wear is manifested by a hum in neutral.

On Y62 with JR710E typical:

• 🤖 Errors P0730/P0740 — incorrect signals from speed sensors.
• 🔌 Corrosion of connectors - leads to loss of communication with the ECU.
• 📊 Adaptation failures - after changing the oil, a reset is required through Consult-III+.

⚠️ Attention: On Patrol Y62 error P0841 (incorrect system pressure) often occurs due to non-original oil. Use only Nissan Matic-S or JWS 3324.

Automatic transmission diagnostics: from simple to complex

Before visiting the service, you can conduct preliminary diagnostics yourself. Start with:

1. Checking the oil level and condition:
   • 🔴 On Y61: warm up the box until 60–70°C, check the level on the dipstick (should be between HOT).
   • 🔴 On Y62: lift and key required 24 mm for the drain plug (oil should drip when 45°C).
2. Reading errors:
   • 📱 Use a scanner ELM327 with the program Torque Pro (for base codes) or Consult-III+ (for deep diagnostics).
   • 🔧 Bugs P0700–P0799 relate to the transmission.
3. Test drive:
   • 🚗 Check the smoothness of switching between cold and hot.
   • 🛑 Pay attention to shocks when braking (a symptom of torque converter wear).

If the box goes into emergency mode (Check AT), do:

1. Остановите автомобиль, заглушите двигатель.
2. Проверьте уровень масла.
3. Отключите аккумулятор на 10 минут (для сброса ошибок).
4. Повторите запуск.

If the problem persists, computer diagnostics is required. On Y62 without Consult-III+ some errors (eg P17F0 - mechatronics fault) cannot be reset.

Automatic transmission service: intervals and nuances

Official regulations Nissan for Patrol often underestimated. Real recommendations:

• 🛢️ Oil change:
  • 🔧 RE4R03A/RE5R05A: every 60,000 km (or 40,000 km under difficult conditions).
  • 🔧 JR710E: every 80,000 km, but the filter is changed only during disassembly.
• 🔧 Replacing the filter:
  • On Y61 The filter is metal and can be washed.
  • On Y62 The filter is paper and requires replacement at every maintenance.
• 🔄 Adaptation:
  • After changing the oil to JR710E it is necessary to reset the adaptation via Consult-III+.

To change the oil to Y61 you will need:

• 🛠️ Oil Nissan Matic-D or Toyota T-IV (for RE4R03A/RE5R05A).
• 🛠️ Filter 31726-31X00 (original) or WIX 58910 (analog).
• 🛠️ Pan gasket 31397-31X01.

On Y62 use only Nissan Matic-S (article KE908-99932). Replacement is performed through the device ATF Exchange, since the box does not have a drain plug in the pan.

⚠️ Attention: On Patrol Y62 after changing the oil in JR710E first 500 km Smooth jerks are possible - this is normal (the box is “learning”). If symptoms persist, adaptation is required.

Automatic transmission repair Patrol: when is it required and how much does it cost?

Automatic transmission overhaul Patrol required for the following symptoms:

• 🚨 Metal shavings on the tray magnets.
• 🚨 Lost transmissions (for example, 3rd or rear does not turn on).
• 🚨 Rumble or grinding noise in neutral (bearing wear).

The cost of repair depends on the type of box:

On Y62 renovation JR710E complicated by the need:

• 🔧 Replacement mechatronics assembly (article no. 31001-JR71A, price ~120,000 rub.).
• 🔧 ECU firmware after installing a new unit.
• 🔧Checking the power circuit (fuses often burn F17/F18 in the block under the hood).

For Y61 common repair kit from Sonnax (article 77945-05K), which includes improved bushings and springs for RE5R05A.

⚠️ Attention: During repairs JR710E do not use used mechatronics - even with low mileage, it may have hidden defects in the solenoids. The original new block guarantees stability.

Automatic transmission tuning and modernization Patrol

To increase the reliability and comfort of automatic transmission Patrol The following modifications are applied:

• 🔥 Installing an additional radiator:
  • On Y61 with ZD30 the oil temperature in the plugs reaches 110–120°C. Additional radiator (eg Setrab 740-910-7611) reduces the load.
• 🛡️ Reinforced valve body:
  • For RE5R05A valve body fits from Valbody (article VB-RE5R05A) with reinforced solenoids.
• 🔧 Changing oil to synthetic:
  • B JR710E can be used Motul Multi ATF (compatible with JWS 3324), but it is necessary to reduce the replacement interval to 50,000 km.
• 📈 Flashing the ECU:
  • For Y62 firmware available from TransGo, eliminating the “thoughtfulness” of the box when overtaking.

On Patrol Y61 popular replacement RE4R03A on RE5R05A from Nissan Safari (article 31000-40X00). This requires:

• 🔧 Improvements to pallet fastenings.
• 🔧 Replacing the torque converter with a model with 245 mm disk.
• 🔧 Reflashing the engine ECU for a new box.

The cost of such a swap is from 200,000 rub., but the result: smooth shifts and increased reliability.

Frequently asked questions (FAQ)

1. Подключите сканер.
2. Выберите меню Transmission → Work Support → AT Learning.
3. Выполните Erase Learning Data.
4. Проедьте 10–15 км с плавными разгонами для обучения.