Nissan Murano gearbox: how to extend its life and avoid costly repairs

Rear axle gearbox Nissan Murano - one of the key transmission components, which determines the smoothness, controllability and durability of the all-wheel drive system. Owners of the Z50 (2003–2007) and Z51 (2008–2014) crossovers often encounter gearbox problems due to their specific design and maintenance requirements. Unlike front-wheel drive models, where the load is distributed differently, all-wheel drive Murano with ATTESA E-TS system exposes the rear axle gearbox to increased loads, especially when driving off-road or with a trailer.

In this article we will analyze the design of the gearbox, typical malfunctions (from humming to oil leaks), diagnostic methods and repair nuances. We will pay special attention critical point - compatibility of oils for Murano gearboxes with differential locks, since using the wrong fluid accelerates wear by 2–3 times. You will also find step-by-step instructions on changing the oil, checking clearances and selecting spare parts, including original part numbers and analogues.

Nissan Murano gearbox design: diagram and principles of operation

Rear axle gearbox Murano integrated with the differential and represents hypoid transmission with bevel gears. In models with the system ATTESA E-TS (All-mode 4WD) an electromagnetic clutch has been added that distributes torque between the axles. Main components:

• 🔧 Drive gear (drive) - connected to the driveshaft, transmits torque from the transfer case.
• 🛠️ driven gear — rigidly connected to the differential box, responsible for distributing force to the wheels.
• 🔄 Differential — provides different angular speeds of the wheels when turning (in versions with locking — LSD).
• 💧 Oil pump (in some modifications) - maintains pressure to lubricate bearings.

Gearbox Feature Murano — angle of twist of the hypoid pair (about 45°), which requires the use of special oils with extreme pressure additives (GL-5). The 2008+ models (Z51) have a reinforced gearbox housing with additional stiffening ribs, but the problem of overheating when towing remains. For example, when driving with a trailer weighing >1.5 tons, the oil temperature in the gearbox may exceed 120°C, which leads to lubricant degradation.

In gearboxes with differential lock (LSD) is used friction clutch, which is triggered when the wheels slip. This adds complexity to maintenance: for example, the oil for such gearboxes must have a friction modifier (for example, Nissan Differential Gear Oil LSD or Mobilube LS 75W-90).

Signs of a gearbox malfunction: when to sound the alarm

The first symptoms of problems with the gearbox Murano are often ignored until the fault reaches a critical phase. Pay attention to the following signals:

• 🔊 Hum or howl when driving at speeds >60 km/h - indicates wear of bearings or gears. Typical for gearboxes with mileage >150 thousand km.
• 💨 Oil leak from under seals or oil seals - leads to oil starvation and accelerated wear.
• 🔄 Vibration or jerking during acceleration - can be caused by play in the differential or damage to the gears.
• 🚨 4WD indicator lights up on the dashboard - often associated with a malfunction of the electromagnetic clutch ATTESA.

Particularly dangerous metal particles in oil — their presence indicates the destruction of gears or bearings. To check this, just drain a little oil from the gearbox into a light container and inspect the sediment. If shiny grains are found, urgent diagnosis is required.

⚠️ Attention: If the hum in the gearbox is accompanied crunching when turning, this may indicate destruction of the differential pinions. Operating the vehicle in this condition can result in the rear axle jamming!

Nissan Murano gearbox diagnostics: step-by-step instructions

Before repairing, it is necessary to accurately determine the cause of the malfunction. You can carry out diagnostics yourself by following this algorithm:

1. Checking the oil level and condition:
   • Place the car on a level surface.
   • Remove the filler plug (key on 24 mm).
   • The oil should be level with the bottom edge of the hole. If the level is lower, add more; if the oil is black or has metal shavings, it needs to be replaced.
2. Checking the backlash:
   • Jack up the rear of the car and rock the wheel horizontally.
   • Backlash more 1–1.5 mm indicates wear on the differential bearings.
3. Listening to Noises:
   • Start the engine and listen to the gearbox at idle speed and while driving.
   • A hum at speed means wear on the gears, a knocking noise means damage to the bearings.

For an accurate diagnosis it may be necessary endoscope (for example, model Borescope Teslong) to inspect the internal surfaces without disassembling. If a visual inspection reveals chips on the gears or corrosion on the bearings, the gearbox must be repaired or replaced.

Changing the oil in a Nissan Murano gearbox: nuances and recommendations

Gearbox oil Murano should be changed every 60–90 thousand km (or once every 4 years), but when used in difficult conditions (off-road, towing), the interval is reduced to 40 thousand km. To replace you will need:

• 🛢️ Oil 75W-90 GL-5 (for versions with LSD - special oil with a friction modifier).
• 🔧 Key on 24 mm for drain and fill plugs.
• 🧰 Thread sealant (for example, Loctite 577).
• 🧹 Container for draining waste (volume ~1.5 l).

Step by step instructions:

1. Warm up the car (the oil should be warm for better drainage).
2. Raise the rear end using a lift or jacks.
3. Unscrew the drain plug (bottom) and drain the oil.
4. Replace the sealing ring of the plug (part no. 11026-01M02).
5. Tighten the drain plug, then pour new oil through the top hole to the level of the lip.

What kind of oil should I put in a Murano gearbox with LSD?

For gearboxes with differential lock (LSD) oils with a friction modifier are suitable, for example:

• Nissan Differential Gear Oil LSD (article KE908-99932)
• Mobilube LS 75W-90
• Red Line 75W90 NS

Using regular oil GL-5 without additives will lead to slipping of the LSD clutch and its accelerated wear.

Oil volume in the gearbox Murano - about 1.3–1.5 l. After replacement, it is recommended to drive 10–15 km and recheck the level, as the oil will be distributed throughout the system.

Parameter	Nissan Murano Z50 (2003–2007)	Nissan Murano Z51 (2008–2014)
Gearbox type	Hypoid, no locking	Hypoid, with option LSD
Oil volume	1.3 l	1.5 l
Recommended oil	75W-90 GL-5	75W-90 GL-5 with friction modifier
Replacement interval	60 thousand km	40–60 thousand km

Gearbox repair: when can it be restored and when can it only be replaced?

The cost of a new gearbox for Murano amounts to 80–120 thousand rubles (depending on the year and configuration), so repairs are often economically feasible. However, not all faults can be repaired:

• ✅ Bearing wear - replaced with new ones (a set of bearings costs 5–8 thousand rubles).
• ✅ Seal leakage — can be eliminated by replacing the seals (shank oil seal article number — 38340-4M000).
• ❌ Chips or cracks in gears — Replacement of the gearbox assembly is required.
• ❌ Hull destruction - cannot be repaired.

For repairs you will need special puller for bearings (eg Lisle 17800) and a torque wrench for tightening the nuts to 120–150 Nm. If you do not have experience in repairing transmissions, it is better to contact a service center - errors during assembly (for example, incorrect clearance in the meshing of gears) will lead to rapid failure of the gearbox.

⚠️ Attention: When replacing gears of the gearbox Murano must be used paired sets (drive + driven gears). Installing only one new gear will lead to uneven wear and increased noise!

Selection of spare parts: original vs analogues

When purchasing spare parts for a gearbox Murano It is important to avoid fakes. Supplies original parts Nissan under the brand Nissan Parts, but there are also proven analogues:

Detail	Original article	Analogue (brand + article)	Note
Shank seal	38340-4M000	Corteco 23015600B	Suitable for Z50 and Z51
Differential bearing	40502-4M000	Koyo 66200-3RS	Requires a press for installation
Gear oil with LSD	KE908-99932	Red Line 75W90 NS	Contains a friction modifier

When choosing analogues, pay attention to quality of seals - cheap seals often leak through 10–15 thousand km. For gearbox gears, it is better to use only the original, since analogues (for example, from Febi or SKF) may have other gearing parameters.

Prevention: how to extend the life of a Nissan Murano gearbox

Gearbox service life Murano directly depends on operating conditions and regular maintenance. Follow these guidelines:

• 🚗 Avoid sharp starts with slipping - this increases the load on the differential.
• 🔥 Do not tow a trailer weighing >1.5 tons without additional cooling of the gearbox (an external radiator can be installed).
• 🛑 When driving off-road, turn on downshiftto reduce the load on the transmission.
• 📅 Reduce oil change interval to 40 thousand kmif you often drive on dirt roads.

It is also useful periodically (once every 20 thousand km) check bearing clearance differential. To do this, it is enough to swing the wheel in a suspended state - if the play exceeds 1 mm, bearings require replacement.

FAQ: Frequently asked questions about the Nissan Murano gearbox

Is it possible to drive with a humming gearbox?

For a short time (up to 1–2 thousand km) it is possible, but ignoring the hum will lead to the destruction of gears and jamming of the bridge. If the noise increases during acceleration, this is a sign of bearing wear that requires urgent diagnosis.

What kind of transmission oil should I put in a 2010 Murano with all-wheel drive?

For Murano Z51 (2008–2014) with system ATTESA E-TS and differential lock (LSD) oil needed 75W-90 GL-5 with friction modifier, for example, Nissan KE908-99932 or Mobilube LS 75W-90.

How much does it cost to replace a gearbox on a Murano at a service center?

The cost of work to replace the gearbox in the service is 8–15 thousand rubles (excluding spare parts). A complete replacement of a unit with an original gearbox will cost 100–150 thousand rubles, repair (replacement of bearings and seals) - 20–30 thousand rubles.

What happens if you don’t change the oil in the gearbox?

Over time, the oil loses its properties, accumulates metal shavings and ceases to protect parts. This leads to:

• Accelerated wear of gears and bearings.
• Overheating of the gearbox (risk of jamming).
• Increased noise and vibrations.

Critical wear may require replacement of the gearbox assembly.

Is it possible to repair a Murano gearbox yourself?

Self-repair is possible if you have experience and special tools (pullers, torque wrench). However, replacing gears or bearings requires precise adjustment of gaps, which is difficult to perform without experience. Errors during assembly will result in increased noise or damage.