How to Replace the Fuel Cap on a 2017 Mazda CX-5
Step-by-step instructions, safety tips, and replacement part guidance for 2013, 2014, 2015, 2016
How to Replace the Fuel Cap on a 2017 Mazda CX-5
Step-by-step instructions, safety tips, and replacement part guidance for 2013, 2014, 2015, 2016
🔧 Fuel Cap - Replacement
Your fuel cap on your CX-5 is a simple part, but a damaged seal can trigger a check engine light and let fuel vapors escape. Replacing it is quick and easy, and you do not need to disconnect the battery.
Difficulty Level: Beginner | Estimated Time: 0.1-0.2 hours
⚠️ Safety & Precautions
- Work with the engine off and the vehicle parked safely.
- Do not smoke or work near open flames.
- Keep dirt out of the fuel filler neck.
- If the fuel cap is stuck, do not force it with pliers.
- No battery disconnect is required.
🔧 Required Tools
You'll need the following tools for this repair:
- None required
- Clean microfiber cloth
- Latex or 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.
- Make sure the ignition is off.
- Let the area around the fuel door cool if the vehicle was recently driven.
🔨 Step-by-Step Instructions
Follow these steps in order:
Step 1: Open the fuel door
- Press the fuel door to open it.
- Let the cap hang freely on the tether.
Step 2: Remove the old fuel cap
- Turn the cap counterclockwise by hand until it comes off.
- If your cap has a click-off feature, keep turning until it releases.
- Do not use tools on the cap.
Step 3: Inspect the filler neck
- Check the sealing surface for dirt, damage, or corrosion.
- Wipe it clean with a microfiber cloth.
Step 4: Install the new fuel cap
- Align the cap threads and turn it clockwise by hand.
- Tighten until you hear several clicks.
- The cap should feel snug, not forced.
Step 5: Close the fuel door
- Make sure the cap is seated and the tether is clear.
- Close the fuel door fully.
✅ After Repair
- Start the vehicle and check that the fuel cap warning is gone.
- If the check engine light was on, it may take several drive cycles to clear.
- Make sure the cap clicks tight after every refuel.
💰 DIY vs Shop Cost
Shop Cost: $60-$120 (parts + labor)
DIY Cost: $15-$40 (parts only)
You Save: $45-$80 by doing it yourself!
Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.1-0.2 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.















