🔧 Pathfinder - CVT Transmission Fluid Drain & Refill

This service replaces the old CVT fluid with fresh Nissan-spec CVT fluid to protect the belt/chain, pulleys, and valve body. On your Pathfinder, the correct fluid level is temperature-sensitive, so the final level check must be done at a specific CVT fluid temperature.

Difficulty Level: Intermediate | Estimated Time: 1.5-3.0 hours

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⚠️ Safety & Precautions

• ⚠️ Support the vehicle on jack stands, never a jack alone.
• ⚠️ CVT fluid can be hot—wear nitrile gloves and safety glasses.
• ⚠️ Use only Nissan CVT Fluid NS-3 (or exact-spec equivalent). Do not use “universal ATF.”
• ⚠️ Do not power-flush a CVT; stick to a drain-and-refill.
• ⚠️ Keep dirt out of the fill area; CVTs are sensitive to contamination.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Safety glasses
• Nitrile gloves
• Trim clip remover tool
• 10mm socket
• 12mm socket
• 14mm socket
• 19mm socket
• 3/8" drive ratchet
• 3/8" drive torque wrench
• Drain pan (10-quart minimum)
• Fluid transfer pump (specialty)
• Long funnel
• OBD2 scan tool with live data CVT fluid temperature (specialty)
• Infrared thermometer
• Shop rags
• Brake cleaner spray

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Nissan-spec CVT fluid (NS-3) - Qty: 5-7 quarts
• CVT drain plug crush washer - Qty: 1
• CVT level/check plug washer - Qty: 1

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📋 Before You Begin

• Park on a level surface, set the parking brake, and chock the rear wheels.
• Warm the drivetrain with a 10–15 minute drive so the fluid drains more completely.
• Plan your level check: you’ll need CVT fluid temperature. Your scan tool live data is best. Temperature matters more than “fill until it looks good.”
• If your Pathfinder has a plastic under-cover, remove it for access.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and secure the Pathfinder

• Use a floor jack (rated 3-ton minimum) to lift the front at the approved center jacking point.
• Place jack stands (rated 3-ton minimum) under the front support points and lower onto them.
• Keep the vehicle as level as possible; an uneven vehicle can cause an incorrect fluid level.

Step 2: Remove the lower splash shield (if equipped)

• Use a trim clip remover tool to pop out plastic clips.
• Use a 10mm socket and 3/8" drive ratchet to remove bolts.
• Set the shield and hardware aside in order.

Step 3: Identify the CVT drain and level/check points

• Place a drain pan (10-quart minimum) under the CVT.
• Clean around plugs using shop rags and brake cleaner spray so debris can’t fall inside.
• Pro tip: Take a quick photo before removing anything.

Step 4: Drain the old CVT fluid

• Use a 19mm socket and 3/8" drive ratchet to remove the CVT drain plug.
• Let fluid drain until it slows to a drip (typically 10–20 minutes).
• Inspect the drain plug for metal fuzz. A light paste is normal; chunks are not.

Step 5: Reinstall the drain plug with a new washer

• Replace the drain plug washer with a CVT drain plug crush washer.
• Thread the plug in by hand first to avoid cross-threading.
• Tighten using a 3/8" drive torque wrench to Torque to factory specification (plug torque varies by production date and plug style).

Step 6: Refill with the correct CVT fluid (two possible fill methods)

• Method A (dipstick tube fill, if equipped):
• Insert a long funnel into the CVT fill/dipstick tube.
• Add Nissan-spec CVT fluid (NS-3) in measured amounts, starting with about what you drained.
• Method B (fill plug fill, if no dipstick tube):
• Use a fluid transfer pump (specialty) to pump Nissan-spec CVT fluid (NS-3) into the CVT fill port.
• Stop before it overflows; the final level is set at temperature in the next steps.
• Pro tip: Measure drained fluid to estimate refill amount.

Step 7: Circulate fluid and bring CVT to level-check temperature

• Start the engine and keep your foot on the brake.
• Slowly move the shifter through P-R-N-D and back, pausing 3 seconds in each position.
• Use an OBD2 scan tool with live data CVT fluid temperature (specialty) to monitor CVT fluid temperature.
• Use an infrared thermometer as a backup reference (scan tool is preferred).
• Bring CVT fluid to the level-check range your service information specifies, then perform the level check. Torque to factory specification for any plugs removed during this step.

Step 8: Set the final fluid level at temperature (overflow/level-check style)

• With the engine idling and the vehicle level, place the drain pan (10-quart minimum) under the level/check point.
• Use the correct socket set (commonly 10mm socket, 12mm socket, or 14mm socket depending on plug) to carefully open the level/check plug.
• Proper level is typically indicated by a light steady drip/stream at the specified temperature; add fluid with the fluid transfer pump (specialty) if no fluid comes out.
• Install a new CVT level/check plug washer if required by your plug style.
• Tighten with a 3/8" drive torque wrench to Torque to factory specification.

Step 9: Reinstall the splash shield and lower the vehicle

• Reinstall under-covers using the 10mm socket and 3/8" drive ratchet, plus the trim clip remover tool for clips.
• Lift slightly with the floor jack (rated 3-ton minimum), remove jack stands (rated 3-ton minimum), and lower the vehicle.

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✅ After Repair

• Test drive 10–15 minutes. Confirm smooth takeoff and no flare/slip.
• Check for leaks around the drain plug and level/check plug.
• Recheck the fluid level using the same temperature-based method if shifting feels abnormal.
• If you have a scan tool, check for stored CVT-related codes after the drive.

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💰 DIY vs Shop Cost

Shop Cost: $250-$450 (parts + labor)

DIY Cost: $70-$160 (parts only)

You Save: $180-$290 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.5-3.0 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.

Assumption: This procedure is for the factory CVT using Nissan-spec NS-3 and a temperature-based level check; plug sizes/torques can vary, so use factory specs for final tightening.