🔧 Highlander - Transmission Fluid Change (Drain & Fill)

Your Highlander can have either a dipstick-style transmission or a “sealed” transmission that requires checking fluid level through an overflow plug at a specific fluid temperature. The exact steps and torque specs depend on which setup your Highlander has, so we need to identify it first to avoid underfilling/overfilling.

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

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⚠️ Safety & Precautions

• 🛑 Work on a level surface and support your Highlander with jack stands, not just a jack.
• 🔥 Transmission fluid can be hot; let the drivetrain cool so you don’t get burned.
• ⚠️ The level-check procedure (if sealed) must be done at a specific ATF temperature; doing it “cold” can damage the transmission.
• 🔋 Battery disconnect is not required for a drain & fill.

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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 10-quart)
• Metric socket set (8mm-19mm)
• 3/8" drive ratchet
• Torque wrench (10-100 ft-lbs range)
• Trim clip tool
• Fluid transfer pump (hand pump) (specialty)
• OBD2 scan tool that can read ATF temperature (specialty)
• Funnel with hose
• Shop rags

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Automatic transmission fluid (Toyota ATF WS equivalent) - Qty: 4-6 quarts
• Transmission drain plug gasket - Qty: 1
• Transmission fill plug gasket - Qty: 1

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📋 Before You Begin

• Park your Highlander on level ground and chock the rear wheels.
• Raise and support the front (or all four corners) so the vehicle sits level on jack stands.
• Quick check #1 (question): Under the hood, do you see a transmission dipstick (usually a yellow/black handled stick labeled ATF)?
• Quick check #2 (question): Do you have an OBD2 tool/app that can display ATF temperature? (This is required for sealed-style level setting.)

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Confirm which fill/level method your Highlander uses

• Open the hood and look for an ATF dipstick.
• If you do have a dipstick, reply “dipstick” and I’ll give you the exact dipstick procedure and correct temperature range.
• If you do not have a dipstick, reply “sealed” and I’ll give you the sealed overflow/temperature procedure.
• Sealed systems must be set at a target ATF temp.

Step 2: Tell me what you have for ATF temperature reading

• If you have an OBD2 reader/app that shows ATF temp, reply “have temp”.
• If you don’t, reply “no temp” and I’ll tell you the simplest compatible options to read ATF temp on your Highlander before you start (so you don’t risk a wrong fluid level).

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✅ After Repair

• Once we confirm your setup, I’ll include the correct final checks: leak check, road test, and re-check of level (if applicable).

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💰 DIY vs Shop Cost

Shop Cost: $250-$500 (parts + labor)

DIY Cost: $50-$120 (parts only)

You Save: $200-$380 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.