🔧 Ioniq - Fuel Pump Replacement

Your Ioniq has two “fuel pumps” depending on what you’re trying to fix: the in-tank low-pressure fuel pump module (inside the fuel tank) and the engine-mounted high-pressure fuel pump (for the GDI system). The replacement steps, tools, and safety procedures are different, so I need one quick confirmation before I give you the exact, trim-correct procedure.

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

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⚠️ Safety & Precautions

• ⚠️ Fuel vapors are flammable—work outdoors or in strong ventilation, no smoking, no sparks.
• ⚠️ Relieve fuel pressure before disconnecting lines to avoid spray.
• ⚠️ Keep a class B fire extinguisher nearby.
• ⚠️ Hybrid note: avoid orange high-voltage cables; do not probe them.

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🔧 Required Tools

You'll need the following tools for this repair:

• OBD2 scan tool
• 10mm socket
• Ratchet
• Trim clip removal tool
• Flathead screwdriver
• Needle-nose pliers
• Fuel line quick-disconnect tool set (specialty)
• Brass punch set (specialty)
• Small hammer
• Shop towels
• Catch pan
• Nitrile gloves
• Safety glasses
• Fire extinguisher (Class B)

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• In-tank fuel pump module - Qty: 1
• Fuel pump module seal (tank O-ring/gasket) - Qty: 1

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📋 Before You Begin

• 🅿️ Park on level ground, ignition OFF, key away from the car.
• Open the fuel door and loosen the gas cap to reduce tank vapor pressure.
• Plan to work with the tank below 1/2 full to reduce spills.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Confirm which “fuel pump” you’re replacing

• Your Ioniq can mean either the in-tank pump module (under the rear seat access cover) or the engine high-pressure pump (bolted to the engine).
• Reply with: “in-tank” or “high-pressure”.

Step 2: Share the failure info (so I give the right checks)

• Tell me if you have any codes (use your OBD2 scan tool) and what the symptom is (no start, stalling, low power, loud whining from tank, etc.).

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✅ After Repair

• Once I know which pump, I’ll include the correct prime/start procedure and leak check steps for your Ioniq.

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💰 DIY vs Shop Cost

Shop Cost: $500-$1,400 (parts + labor)

DIY Cost: $180-$900 (parts only)

You Save: $320-$500+ 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.