Nissan X-Trail T31 - one of the most popular crossovers on the Russian market, and its all-wheel drive system ALL MODE 4x4-i has become a key argument for buyers. However, many owners still do not understand exactly how this system works, which modes to choose in different conditions, and how to avoid common mistakes during operation. In this article we will analyze the all-wheel drive device in detail. T31, we will analyze its strengths and weaknesses, and also give practical recommendations for maintenance.

Unlike later generations X-Trail, where all-wheel drive has become purely electronic, T31 (2007–2013) retained the mechanical clutch in the transfer case, which makes it more reliable in difficult conditions. But this also imposes certain restrictions: the system requires proper use, otherwise the risk of breakdowns increases. If you are planning to buy a used one X-Trail T31 or already own one, this information will help you avoid costly mistakes.

Design of the all-wheel drive system ALL MODE 4x4-i

System ALL MODE 4x4-i in Nissan X-Trail T31 built on the basis of a plug-in all-wheel drive with a center differential and an electromagnetic clutch. Unlike permanent all-wheel drive (as in Patrol or Pathfinder), here the rear axle is connected automatically or manually, which reduces fuel consumption in urban mode. Main components of the system:

  • 🔧 Transfer case with an electromagnetic clutch - responsible for the distribution of torque between the axles.
  • ⚙️ Center differential (in mode LOCK is blocked forcibly).
  • 📡 AWD control unit — analyzes data from wheel speed sensors, steering angle and gas pedal position.
  • 🔋 Hydraulic pump — creates pressure to operate the clutch.

In normal mode (2WD or AUTO) the front axle is the drive axle, and the rear axle is engaged only when the front wheels slip. The clutch operates in a split second, but its resource is limited - with aggressive off-road driving, it can fail by 100–120 thousand km. Critical moment: if the clutch begins to “kick” when switching modes, this is the first sign of wear on the clutches - an oil change in the transfer case and diagnostics are required.

Interesting fact: in X-Trail T31 with diesel engine M9R The all-wheel drive system has a reinforced clutch, as the torque is higher than that of gasoline versions. This is worth considering when choosing a used car - diesel versions are more often found with unibody drive, even after 150 thousand km.

📊 What engine does your Nissan X-Trail T31 have?
  • Gasoline 2.0 (MR20DE)
  • Gasoline 2.5 (QR25DE)
  • Diesel 2.0 (M9R)
  • Other

All-wheel drive modes: when and how to use

B X-Trail T31 There are three main all-wheel drive modes available, switched by a rotary switch next to the gearshift lever. Incorrect selection of the mode can lead to overheating of the clutch or increased wear of the transmission. Let's look at each option:

  1. 2WD — front-wheel drive. Used for driving on asphalt in dry weather. In this mode, the rear axle is completely disabled, which reduces fuel consumption.
    ⚠️ Attention: Long ride in 2WD on wet asphalt or snow can lead to skidding - the system does not have time to connect the rear axle during a sharp start.
  2. AUTO — automatic all-wheel drive. The system itself decides when to engage the rear axle (when the front wheels slip or sharp acceleration). Optimal for the city in winter or light off-road. In this mode, the clutch operates in a “gentle” mode, but its resource is still reduced with frequent slipping.
  3. LOCK — forced locking of the center differential (50/50 torque distribution). Used to overcome serious off-road conditions (mud, snow, sand). The maximum speed in this mode is 40 km/h! Exceeding this leads to overheating of the coupling.

Important nuance: in mode LOCK Do not drive on dry asphalt - this leads to “forceful” slipping of the wheels and rapid wear of the transmission. It is also not recommended to include LOCK at speeds above 10 km/h - first reduce the speed, then switch the mode.

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If you need to overcome a short difficult section (for example, a snowy climb), use the LOCK only for the duration of the maneuver, then immediately return to AUTO.

Typical faults and their symptoms

All-wheel drive system X-Trail T31 reliable, but has a number of “weak points” that every owner should be aware of. Here are the most common problems:

Malfunction Signs Possible reasons Repair cost (approx.)
Four-wheel drive clutch wear Jerks when switching modes, vibration at speeds of 40–60 km/h Riding in LOCK on asphalt, old oil in transfer case 15,000–30,000 ₽ (coupling replacement)
Oil leak from transfer case Oil stains under the car, noise when driving Worn seals, cracks in the housing 5,000–12,000 ₽ (replacement of oil seals + oil)
AWD control unit malfunction The lamp is flashing 4WD, modes do not switch Short circuit, contact corrosion 8,000–20,000 ₽ (repair/replacement of unit)
Transfer case bearing wear Rumble at speed, vibration when accelerating Driving with a faulty clutch, lack of maintenance 10,000–25,000 ₽ (replacement of bearings)

One of the most insidious malfunctions is clutch jamming. This happens if you drive for a long time in LOCK on asphalt or ignore oil changes. Signs: the car begins to “steer” to the side, strong vibration appears. In this case, urgent diagnostics are required - further operation may lead to destruction of the transfer case.

What to do if it catches fire CHECK 4WD?

If a light comes on on the dashboard CHECK 4WD,Check the oil level in the transfer case. If the oil is normal, try restarting the system: turn off the engine, shift the selector to 2WD, then back to AUTO. If the error remains, diagnostics with a scanner is required (often the speed sensor or control unit is to blame).

All-wheel drive maintenance: what to do and when to do it

So that the all-wheel drive system X-Trail T31 has served for a long time, it is necessary to follow the maintenance schedule. Here are the key points:

  • 🛢️ Changing the oil in the transfer case - every 60,000 km (or once every 4 years). Use only original oil Nissan Matic S or analogues (Mobil ATF 3309, Toyota T-IV).
  • 🔧 Checking the seals — at every maintenance (especially after driving through deep puddles).
  • 🔍 Clutch diagnostics - when jerking or vibration occurs.
  • 📋 Checking wheel speed sensors — once every 2 years (their malfunction leads to incorrect operation AUTO-mode).

Many owners forget that the oil is in the transfer case. X-Trail T31 - This is not a “lifelong” liquid. Over time, it loses its properties, which leads to accelerated wear of the coupling. Critical point: if you buy used X-Trail T31 with a mileage of more than 100 thousand km, first of all, change the oil in the transfer case - even if the previous owner claims that “everything is fine”.

Warm up the car (drive 5–10 km)

Raise the car on a lift or overpass

Prepare new oil (3–3.5 liters)

Drain the old oil (pay attention to the presence of metal shavings)

Wash the transfer case pan (if the oil is very dirty)

Pour new oil through the filler hole

Check the level (should be dripping from the inspection hole) -->

Comparison with competitors: who is better off-road?

Nissan X-Trail T31 often compared with other crossovers of the same generation: Toyota RAV4, Honda CR-V, Mitsubishi Outlander. How does its all-wheel drive system compare to them?

In terms of reliability ALL MODE 4x4-i inferior to permanent all-wheel drive Outlander (system Super Select 4WD), but is superior to a "plug-in" system RAV4, where the rear axle is activated only when slipping. Main advantage X-Trail T31 — possibility of forced blocking (LOCK), which does not have CR-V And RAV4.

However, X-Trail there is a weak point - clutch in transfer case. B Outlander a more reliable center differential is used, and in RAV4 — an electromagnetic clutch in the rear gearbox, which is less likely to fail. If you are planning serious off-roading, it is better to look away Outlander or Subaru Forester with permanent all-wheel drive.

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For light off-road and urban use X-Trail T31 - an excellent choice. But if you need a car for regular trips in mud or snow, consider options with full-time all-wheel drive (for example, Mitsubishi Outlander or Subaru Forester).

Modernization and tuning of all-wheel drive

Some owners X-Trail T31 strive to improve its off-road qualities. Here are some popular modifications:

  • 🔨 Installing transfer case and crankcase protection — protects against impacts when driving off-road (cost: 8,000–15,000 ₽).
  • 🛠️ Replacing the oil in the transfer case with a more viscous one (For example, Mobil 1 ATF) - improves clutch performance in cold weather.
  • 🚙 Installing rear differential lock (For example, ARB Air Locker) - significantly increases cross-country ability (cost: from 80,000 ₽).
  • 📈 AWD control unit firmware — allows you to more accurately adjust the torque distribution (available in some tuning studios).

However, not all improvements are justified. For example, installing a rear differential lock requires strengthening the axle shafts and can lead to increased wear on the transmission.

⚠️ Attention: Before installing locks, consult with specialists - incorrect tuning can lead to breakdown of the transfer case or gearbox.

If you want to improve your off-road capability without making a major investment, start with quality off-road tires (such as Nokian Hakkapeliitta or BFGoodrich All-Terrain) and pallet protection. This will give a greater effect than expensive firmware for the AWD unit.

FAQ: Frequently asked questions about all-wheel drive Nissan X-Trail T31

Is it possible to drive in LOCK on asphalt?

No, this is strictly prohibited. In mode LOCK The wheels of the front and rear axles are rigidly connected, which on hard surfaces leads to increased wear of the transmission and overheating of the clutch. Use LOCK only off-road (snow, mud, sand) and at a speed not exceeding 40 km/h.

What kind of oil should I put in the transfer case?

Officially recommended Nissan Matic S (article KE908-99932). Alternatives: Mobil ATF 3309, Toyota T-IV, Motul Multi ATF. Volume - 3.3 liters. Important: do not use cheap analogues - this may lead to breakage of the coupling.

Why when switching to LOCK do you hear clicks?

Clicking noise when turned on LOCK - a normal phenomenon if they are isolated. This triggers the electromagnetic clutch. But if the clicks are repeated many times or are accompanied by vibration, this is a sign of wear on the clutch or low oil level in the transfer case. Diagnosis required.

How long does a four-wheel drive clutch last?

The clutch life depends on the driving style. With careful use (rare use LOCK, timely oil changes) it lasts 150–200 thousand km. During aggressive off-roading or driving in LOCK on asphalt - 80–100 thousand km. The cost of replacing the coupling is from 20,000 ₽ (used) to 40,000 ₽ (new).

Is it possible to tow a trailer in AUTO?

Yes, but with reservations. In mode AUTO You can tow light trailers (up to 1.5 tons). However, when driving under load, the clutch works more intensely, so it is recommended to check its condition every 500 km. For heavy trailers it is better to use the mode LOCK (but do not exceed the speed of 60 km/h).