🔧 Civic - CVT Transmission Fluid Drain & Refill

This service drains the old CVT fluid and refills with fresh Honda-spec fluid to protect the CVT’s belt/pulleys and keep shifting smooth. On your Civic, this is typically a drain-and-fill service (not a power flush).

Difficulty Level: Intermediate | Estimated Time: 1-2 hours

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⚠️ Safety & Precautions

• ⚠️ Work on a cool drivetrain; hot CVT fluid can burn you.
• ⚠️ Support the car with jack stands; never rely on a floor jack alone.
• ⚠️ Keep everything clean—dirt in a CVT can cause expensive damage.
• ⚠️ Use only Honda HCF-2 CVT fluid; using “universal ATF” can cause CVT problems.
• ⚠️ Battery disconnect is not required for this service.

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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
• Drain pan (at least 8-quart)
• Funnel with long hose
• 3/8" drive ratchet
• 3/8" drive torque wrench (10-80 ft-lb range)
• 10mm socket
• 17mm socket
• Trim clip removal tool
• Shop rags
• Measuring container (at least 4-quart)

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Honda HCF-2 CVT fluid - Qty: 4 quarts
• CVT drain plug crush washer - Qty: 1
• CVT fill plug crush washer - Qty: 1

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📋 Before You Begin

• Park on a level surface, set the parking brake, and place wheel chocks behind the rear wheels.
• Warm the CVT fluid with a short 10-minute drive, then shut the engine off.
• Gather a clean measuring container so you can refill the exact amount you drained.
• Assumption (best-effort): your Civic’s CVT service is performed by measuring what drains out and refilling the same amount using the CVT fill plug.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Lift and secure the front of the car

• Use a floor jack (rated 3-ton minimum) to lift the front of the car at the proper jacking point.
• Set the car down onto jack stands (rated 3-ton minimum).
• Give the car a gentle shake to confirm it’s stable before going underneath.

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

• Use a trim clip removal tool to pop out plastic clips.
• Use a 10mm socket to remove any 10mm bolts holding the shield.
• Set the clips/bolts aside so you don’t lose them.
• Tip: Lay clips in a line to remember locations.

Step 3: Locate the CVT fill plug first

• Open the hood and locate the CVT fill plug (usually a 17mm plug on top/upper side of the transmission).
• Use a 17mm socket with a 3/8" drive ratchet to confirm it will loosen.
• If it won’t loosen, stop here—don’t drain it and get stuck unable to refill.

Step 4: Drain the old CVT fluid

• Position the drain pan (at least 8-quart) under the CVT drain plug.
• Use a 3/8" drive ratchet to remove the drain plug (many Honda CVT drain plugs accept a 3/8" square drive directly).
• Let it drain until it becomes a slow drip.
• Pour the drained fluid into your measuring container and record the amount.
• Tip: Measuring prevents over/under-filling.

Step 5: Reinstall the drain plug with a new crush washer

• Remove the old crush washer from the drain plug and install the new CVT drain plug crush washer.
• Thread the drain plug in by hand first to avoid cross-threading.
• Use a 3/8" drive torque wrench to tighten the drain plug: Torque to 49 Nm (36 ft-lbs).
• Wipe the area clean using shop rags so leaks are easy to spot later.

Step 6: Refill with new Honda HCF-2 CVT fluid

• Remove the fill plug fully using a 17mm socket and 3/8" drive ratchet.
• Install a funnel with long hose into the fill opening.
• Pour in the same amount of Honda HCF-2 CVT fluid that you measured coming out.
• Install a new CVT fill plug crush washer and reinstall the fill plug.
• Use a 3/8" drive torque wrench to tighten the fill plug: Torque to 44 Nm (33 ft-lbs).

Step 7: Reinstall the splash shield and lower the car

• Reinstall the splash shield using the 10mm socket and trim clip removal tool.
• Use the floor jack (rated 3-ton minimum) to lift slightly, remove the jack stands, then lower the car fully.

Step 8: Circulate fluid and check for leaks

• Start the engine and keep your foot on the brake.
• Shift slowly through P-R-N-D and back to P, pausing 2-3 seconds in each position.
• With the engine off, look underneath for any fresh wetness around the drain plug area.

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✅ After Repair

• Take a 10-minute test drive and confirm smooth takeoff and no warning lights.
• Recheck underneath for seepage around the drain plug and any splash shield fasteners.
• If your Civic is showing a maintenance reminder for transmission fluid, reset it on the center screen: Home > Settings > Vehicle > Maintenance Info > Select Item > Reset.
• Tip: Keep a note of mileage and date.

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💰 DIY vs Shop Cost

Shop Cost: $200-$350 (parts + labor)

DIY Cost: $45-$90 (parts only)

You Save: $155-$260 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1-1.5 hours.

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🎯 Ready to get started?

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