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2016 Toyota Highlander
2016 Toyota Highlander
LE - V6 3.5L
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How To Replace Toyota or Lexus Fuel Caps

How To Replace Toyota or Lexus Fuel Caps

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How to Replace the Fuel Cap on a 2016 Toyota Highlander

Step-by-step instructions, safety tips, parts, and EVAP light troubleshooting

How to Replace the Fuel Cap on a 2016 Toyota Highlander

Step-by-step instructions, safety tips, parts, and EVAP light troubleshooting

Orion
Orion

🔧 Fuel Cap - Replacement

Replacing the fuel cap is a quick fix if the old cap is damaged, missing the seal, or no longer clicks tight. A loose or bad cap can trigger a check engine light and let fuel vapors escape.

Difficulty Level: Beginner | Estimated Time: 0.1-0.3 hours


⚠️ Safety & Precautions

  • Work with the engine off and away from sparks, flames, and smoking.
  • Do not overfill the fuel tank before or after replacement.
  • If your model has a locking fuel door, make sure it is fully open before removing the cap.
  • No battery disconnect is required.

🔧 Required Tools

You'll need the following tools for this repair:

  • No tools required
  • Safety glasses
  • Nitrile gloves

🔩 Required Parts

HowToo sells all the parts you need for this repair:

  • Fuel cap - Qty: 1

📋 Before You Begin

  • Park on level ground and turn the ignition off.
  • Let the fuel system sit a few minutes before opening the cap if the vehicle was just driven.
  • Inspect the fuel filler neck threads and seal area for dirt or damage before installing the new cap.

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the fuel door

  • Press the fuel door release or open the fuel door by hand, depending on the setup.
  • Make sure the area around the cap is clean before removal.

Step 2: Remove the old fuel cap

  • Turn the fuel cap counterclockwise by hand until it releases.
  • If it is tethered, let it hang from the strap without forcing it.
  • Do not force a stuck cap.

Step 3: Inspect the filler neck

  • Check the sealing surface and threads on the filler neck for cracks, rust, or dirt.
  • Wipe the area clean with a lint-free cloth if needed.

Step 4: Install the new fuel cap

  • Align the cap with the filler neck and turn it clockwise by hand.
  • Continue turning until you hear or feel it click several times.
  • Make sure it seats fully and feels snug.

Step 5: Close the fuel door

  • Close the fuel door securely.
  • Confirm the cap is seated properly before driving.

✅ After Repair

  • Start the vehicle and confirm the fuel cap warning light or check engine light is off.
  • If a check engine light was on, it may clear after a few drive cycles.
  • If the light stays on, a scan tool may be needed to clear the code and verify the EVAP system.

💰 DIY vs Shop Cost

Shop Cost: $50-$120 (parts + labor)

DIY Cost: $15-$40 (parts only)

You Save: $35-$80 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.1-0.3 hours.


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