🔧 X1 - Fuel Cap Replacement

Replacing the fuel cap on your X1 is a quick job: you’ll remove the old cap from the filler neck and install the new one so it seals properly. A good seal helps prevent fuel vapor leaks (EVAP leaks) that can trigger a check engine light and fuel smell.

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

---

⚠️ Safety & Precautions

• ⚠️ Work outdoors or in a well-ventilated area—fuel vapors are flammable.
• ⚠️ No smoking, flames, or hot work lights near the fuel door.
• ⚠️ Turn the engine off and keep the key fob away from the vehicle while you work.
• ⚠️ Wipe up any spilled fuel immediately and dispose of rags safely.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Safety glasses
• Plastic trim tool set
• Shop towels
• Small flashlight

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel filler cap (sealed, correct fit for X1) - Qty: 1
• Tether/retaining strap (if not included with cap) - Qty: 1

---

📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Turn the ignition fully off and keep the key fob at least 10+ feet away.
• Open the fuel door and let the area air out for a minute if you smell strong fuel vapors.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the fuel door

• Press the unlock button on the key fob if needed, then open the fuel door by hand.
• Use a small flashlight to look at how the cap’s tether (the little strap) is attached.

Step 2: Remove the old fuel cap

• Twist the cap counterclockwise by hand to remove it.
• If it’s tight, wear nitrile gloves for better grip.
• Set the cap on a shop towel to avoid getting dirt into the sealing area.

Step 3: Disconnect the tether (if equipped)

• If the tether clips to the fuel door housing, use a plastic trim tool set to gently pry the tether clip out.
• A plastic trim tool is a non-metal pry tool that helps avoid scratching paint or plastic.
• Pry gently—plastic clips can snap.

Step 4: Install the new fuel cap

• If your new cap includes a tether, clip it into the same spot you removed the old one from (use the plastic trim tool set only if needed).
• Thread the new cap onto the filler neck by hand, turning clockwise.
• Tighten until it clicks (or until it feels firmly seated). Do not use tools to tighten.

Step 5: Clean and close up

• Use shop towels to wipe any dirt around the filler neck and cap area.
• Close the fuel door and make sure it sits flush.

---

✅ After Repair

• Start the engine and confirm there’s no fuel smell around the fuel door.
• If you had a check engine light from a loose cap, it may take a few drive cycles to turn off on its own.
• If the light stays on, a scan tool may be needed to read/clear EVAP codes (this confirms whether the cap fixed the issue).

---

💰 DIY vs Shop Cost

Shop Cost: $60-$150 (parts + labor)

DIY Cost: $20-$60 (parts only)

You Save: $40-$90 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.2-0.5 hours.

---

🎯 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.