Where is the button for the fuel door located on a 2006 galant

Fuse 16 in the Passenger Compartment

https://fuse-box.info/mitsubishi/mitsubishi-galant-2004-2012-fuses

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Hi it's in the dash on the drivers side ,,:::: open the drivers door & remove the access panel to the fuse box above the hood release on the outside of the dash.the fuel pump relay should b the switch on the far right at the bottom of the fuse box .,. Cheers

DId you happen to receive an answer yet? On most Suzuki's and Mitsubishis, the fuel door release is directly under drivers seat on the left side. THe SUzuki's is a flat flap type "lift" button thats sunken into the molding trim around bottom of seat. Makes it hard to find. Mitsubishi models, if its in same place, will have a fuel hose symbol on top of the lift up latch, even though it doesnt look like a button or lift up release.

Hope this helps

The reset button is on the passenger side floor at the corner where the dash meets the door.You'll need to pull down the corner of the carpet to see it.

Yes.

the location of relay pump is at passenger side under the plastic cover near the door side

On most vehicles covered by this manual, the fuel filter is located in the engine compartment, mounted to the firewall.

CAUTION Do not use conventional fuel filters, hoses or clamps when servicing fuel injection systems. They are not compatible with the injection system and could fail, causing personal injury or damage to the vehicle. Use only hoses and clamps specifically designed for fuel injection systems.

Hope this help (remember comment and rated this).

In my experience, the relay is situated behind the left hand kick panel inside the vehicle. It is usually called the circuit opening relay and can have 4 or 6 pins. The panel is the one which covers the left hand door hinges adjacent to the left foot of who ever is sitting in the left hand seat.
Some mitsubishi's have the relay mounted above the ECU, behind the glove box so check there too..

if it has one , all the Japanese cars it will be located behind the glove compartment, you will need to pull the glove compartment and you will find an small door , the filter should be inside...not every model and year will have the application..hope this was very helpful...

push either the left or right end of the gas tank door, its similar to a lever door, basically you as you push one side in the other comes out.