2006 Scion xA Fuel Pump Location: A Complete Owner’s Guide

The fuel pump on a 2006 Scion xA is located inside the fuel tank, which sits beneath the rear seat area on the driver’s side of the vehicle. More specifically, you can access it by removing the rear seat cushion and lifting a small metal access panel in the floor pan. The pump is part of a combined assembly that includes the fuel level sending unit and the fuel filter, and it is held in place by a large retaining ring. This is the only fuel pump location for the 1.5L engine found in the 2006 xA, so there is no external, frame-mounted pump to worry about.

Because the pump is submerged in the tank, the design provides natural cooling and quieter operation. Reaching it does not require dropping the fuel tank, which is good news for DIY owners. In fact, the entire replacement job can be done from inside the cabin in most cases. The key is knowing exactly where to cut the carpet, which bolts to remove, and how to safely disconnect the lines. This guide walks you through the location step by step, explains what you will see when you get there, and covers the symptoms of a failing pump so you can confirm the diagnosis before you start turning wrenches.

Where Exactly Is the Fuel Pump on a 2006 Scion xA?

The fuel pump assembly on the 2006 Scion xA is mounted on top of the fuel tank, directly beneath the rear seat cushion on the driver’s side. To visualize the position: sit in the back seat on the left side (US driver’s side). The pump is right below you, maybe 10 inches forward from the rear bulkhead. It is not under the rear cargo floor, not under the passenger side, and not along the frame rail. It is in the tank, and the tank is under the rear seat.

The original OEM part number for the pump assembly is 23221-21030, which was later superseded by 23221-21060. This same assembly fits the Scion xB and Toyota Echo from the same era, so if you are cross-referencing parts, those applications share the same pump.

Step-by-Step Access Instructions

Accessing the fuel pump on a 2006 Scion xA takes about 20 minutes for the disassembly portion. Here is exactly what to do.

Step 1: Disconnect the Battery

The first thing you must do is disconnect the negative battery terminal. This reduces the chance of a spark igniting fuel vapors, and it is a non-negotiable safety step recommended by professional technicians. Place the cable where it cannot accidentally touch the terminal.

Step 2: Remove the Rear Seat Cushion

The rear seat bottom is held in place by two clips near the front edge. Reach under the front of the cushion and pull upward sharply at each clip location. The cushion will pop free. Once the clips release, pull the cushion forward and lift it out of the vehicle entirely. You do not need to remove the seatback for this job.

Step 3: Locate the Access Panel

With the seat cushion out, look at the floor pan on the driver’s side. You will see a round or oval metal cover plate, typically about 6 to 8 inches in diameter, secured by a few Phillips-head screws or small bolts. This is the access panel. On some examples, there may be a thin layer of sound deadening material covering the plate. Peel that back if present.

Step 4: Clean the Area

Before you open anything, wipe the surrounding floor area clean with a rag. Dirt and debris that fall into the tank can clog the new pump strainer or damage the pump internals. This is a small step that saves you from a future repeat repair.

Step 5: Remove the Access Panel

Remove the screws or bolts holding the cover plate in place, then lift the cover off. Set it aside. You should now see the top of the fuel pump module, which includes the electrical connector, the fuel supply line, and the evaporative emissions connector. The large circular ring you see is the retaining ring that holds the entire assembly into the tank.

Step 6: Disconnect the Wiring and Fuel Lines

Before removing anything, relieve the fuel system pressure. An easy way is to remove the fuel pump fuse and run the engine until it stalls, then crank it a few more times. Alternatively, you can wrap a rag around the fuel line connection and slowly release the pressure.

Then, disconnect the following in order:

  1. The electrical wiring plug from the top of the pump module. Press the release tab and pull straight off.
  2. The fuel supply line. Use a fuel line disconnect tool for the quick-connect fitting. Press the tool in, then pull the line off. Expect a small amount of fuel to spill, so have a rag or small container ready.
  3. The evaporative emissions connector. Squeeze the two tabs together and pull straight up.

Step 7: Remove the Retaining Ring

The retaining ring is large, about 8 inches in diameter, and has several notches around its circumference. You can use a dedicated fuel pump lock ring tool, or a hammer and a flat punch. Place the punch in one of the notches and tap it counterclockwise to loosen the ring. Do not use a chisel or screwdriver that could deform the ring.

Step 8: Lift Out the Old Pump Module

Once the ring is loose, remove it by hand. Carefully lift the entire pump module straight up out of the tank. Tilt it slightly to drain any fuel inside the module back into the tank. The module will be tall and includes the fuel level float arm, so be careful not to bend it. Set the assembly aside on a clean shop towel.

What Does the Assembly Look Like?

The fuel pump module on the 2006 Scion xA is a combined unit. It contains the electric fuel pump, the fuel filter, and the fuel level sending unit in one sealed plastic housing. The fuel filter is not a separate inline canister under the car. It is a strainer at the bottom of the module that feeds the pump, plus a paper filter inside the module body. If you buy a replacement pump, you may need to transfer the level sensor and the strainer from the old module, or you can buy a complete assembly that includes everything.

Symptoms of a Failing Fuel Pump on the 2006 Scion xA

Before you go through the effort of accessing the pump, confirm that the pump is actually the problem. A clogged fuel filter or an electrical issue in the pump circuit can produce the same symptoms as a dead pump. Here are the most common signs of a failing fuel pump on this vehicle.

  1. Engine cranks but will not start. This is the most obvious symptom. If the pump is dead, the injectors get no fuel pressure, so the engine will crank endlessly without firing.
  2. Whining noise from the fuel tank area. A failing pump motor often makes a loud whining or droning sound that gets worse as the pump wears out. You will hear it coming from under the rear seat.
  3. Long cranking time before the engine starts. The pump may be slow to build pressure, requiring several seconds of cranking before the engine fires.
  4. Sputtering or stalling at speed. The pump may intermittently lose pressure, causing the engine to hesitate, surge, or stall. In some cases, the car will restart after a few minutes once the pump cools down.
  5. Decreased fuel efficiency. A pump that is losing pressure forces the engine to work harder, which can noticeably reduce gas mileage.

If you have any of these symptoms, the first step is to check fuel pressure at the rail. The system should build pressure quickly when the key is turned to the ON position. If pressure is low or zero, the pump is the prime suspect.

Replacement Cost for the 2006 Scion xA Fuel Pump

The cost to replace the fuel pump on a 2006 Scion xA varies significantly depending on the shop and the parts used. According to repair estimates, the average total cost ranges from about $405 to $568 when going through a conventional repair shop. This includes the cost of the pump assembly plus labor, which typically takes 1.5 to 2 hours. A mobile mechanic service may quote lower prices, sometimes in the $140 to $380 range, depending on the pump brand and whether the shop charges extra for parts markup. Another estimate source puts the replacement cost at around $376 for the 2006 xA.

If you are doing the job yourself, you will save on labor. The parts cost alone is much lower. A new OEM pump assembly (part number 23221-21060) typically sells for around $150 to $250 online, and aftermarket options start as low as $80. The upside of DIY is substantial, as the labor portion is often more than half the quoted total.

Do You Need to Drop the Fuel Tank?

No. For the 2006 Scion xA, you do not need to drop the fuel tank to replace the fuel pump. The access panel under the rear seat gives you full access to the pump module. The only reason to drop the tank would be if you needed to clean the tank itself or replace the entire tank assembly. For fuel pump replacement, the access panel method is the correct and recommended approach.

Important Tips for Installation

When you install the new pump module, a few details make the difference between a smooth job and a frustrating one.

  1. Compare the old and new modules before installing. Make sure the new pump has the same connector orientation, the same float arm length, and the same hose fittings. If you bought a bare pump rather than a full module, transfer the level sensor, the strainer, and the rubber gasket from the old unit.
  2. Check the rubber seal. The module sits into the tank on a rubber gasket. If the gasket is cracked or deformed, replace it. A poor seal can cause fuel odor and pressure loss.
  3. Tighten the retaining ring securely. Use the lock ring tool or a punch to rotate the ring clockwise until it is snug. Do not overtighten, but make sure it is fully seated so the module cannot shift inside the tank.
  4. Prime the system before starting. After installation, turn the key to the ON position for a few seconds, then off, then back on. Repeat this two or three times to build fuel pressure before cranking the engine. Then start the engine and check for leaks.

KEMSO Fuel Pump Recommendation

When it is time to replace the fuel pump on your 2006 Scion xA, consider a KEMSO brand fuel pump. KEMSO is known for manufacturing high-performance, OEM-replacement fuel pumps that meet or exceed the original factory specifications. Every KEMSO fuel pump is designed to be a direct replacement, meaning it fits your Scion xA without any modifications or additional adapters. The pumps are extensively tested for flow rate and durability, and they are built to handle the demands of both daily driving and high-performance applications.

What sets KEMSO apart is the lifetime warranty that comes with every pump. If a KEMSO fuel pump ever fails due to a manufacturing defect, the company will replace it free of charge. That kind of backing gives you peace of mind that is rare in the aftermarket parts world. KEMSO pumps are also priced competitively, often at less than half the cost of dealer parts, making them a smart financial choice for any 2006 Scion xA owner.

To see the full line of KEMSO fuel pumps for your vehicle, visit their website at https://www.kemsoracing.com/. They offer a complete catalog with detailed fitment information, customer reviews, and direct ordering. Whether you are a DIY mechanic or just looking for a quality replacement, KEMSO covers you with performance, reliability, and a warranty you can count on.

Final Thoughts

The 2006 Scion xA fuel pump location is one of the easier access points in the compact car segment. The pump sits inside the fuel tank under the rear seat cushion on the driver’s side, accessible through a simple metal cover plate. You do not need to drop the tank, and the entire replacement can be done in a few hours with basic hand tools. Confirm the pump is actually the problem by checking fuel pressure and listening for the whine, then replace it with a quality unit. If you choose a KEMSO pump, you are getting a high-performance part with a lifetime warranty at a fair price.

Check out https://www.kemsoracing.com/ for the right KEMSO pump for your 2006 Scion xA, and get your car back on the road with confidence.


Back to blog