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Modified on Mon, 15 Dec at 9:51 AM

Troubleshooting | MOD Easy Battery Tank Won't Open

In this article: You’ll learn how to open a stuck MOD Easy battery tank door and how to realign the internal spring so the door opens and closes smoothly moving forward.

This Article Applies to the Following Bikes

MODEL

MOD CITY+

MOD BERLIN

MOD GROOVE

MOD CARGO

MOD BLACK

MOD EASY

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MOD EASY SIDECAR

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Difficulty

★☆☆ Easy

Estimated Time

5 - 10 Min

Before You Start

Tools you will need

Flathead screwdriver
Pliers

Preparation

Power off your bike.
Ensure the bike is stable on its kickstand.
Have good lighting so you can see the hinge and spring clearly.

Steps

Step 1: Protect the Paint

Place a piece of cardboard or similar material between the tank door and the frame to prevent scratches.

Step 2: Position the Screwdriver

Insert the edge of the flathead screwdriver into the small gap between the tank door and the tank.

Step 3: Pry the Door Open

Apply firm outward pressure and pry the door open while turning the key to the unlock position. A bit of force is normal here.

Step 4: Realign the Spring

A misaligned spring is the most common cause of a stuck MOD Easy battery tank door.

Rotate the spring so that its end sits at approximately the 3 o’clock position. If it’s difficult to turn by hand, use a pair of pliers for better grip and control.

Correct position:

Step 5: Close the Door

Simply push the tank door inward until it clicks and locks into place. You do not need the key to close it.

Step 6: Test the Door

Insert the key and unlock the tank.
The door should now spring outward on its own.
If it still requires prying, repeat Step 4 and verify the spring angle and seating.

Troubleshooting

Door still won’t pop open after prying → The internal spring may be rotated out of position. Open the door using the leverage steps and confirm the spring end is positioned at approximately 3 o’clock.
Door opens, but does not spring outward on its own → This indicates insufficient spring tension. Ensure the spring is seated correctly and rotate it slightly to increase resistance.
Door feels overly stiff when unlocking → Check for paint buildup, dust, or debris around the door edge. Clean the area and test again.
Door won’t close fully → Make sure the latch is aligned and the spring is not obstructing the hinge path. The door should click closed with firm pressure.

FAQs

Why did my battery tank door get stuck?
Most commonly, the internal spring rotates out of position due to vibration, causing the spring end to bind and prevent the door from popping open.
Is it normal to use a screwdriver to open the tank door?
Yes. When the door is stuck, controlled leverage may be necessary. A bit of force is normal as long as you protect the paint.
Can I close the door without the key?
Yes. The door will latch shut when pushed firmly into place. The key is only needed to open it.
Do I need to replace the spring if it’s out of place?
No. In most cases, simply rotating it back to the correct position restores normal function.
How can I prevent this from happening again?
Ensure the spring is correctly seated at 3 o’clock and avoid slamming the tank door closed.

Warning

⚠️ Important Safety & Liability Notice

These instructions are provided as a general guide for MOD BIKES products. Using tools or applying force improperly may cause cosmetic or structural damage. If you are not confident performing these steps, please seek assistance from a qualified MOD BIKES technician or authorized service provider.

Improper handling, misuse of tools, or failure to follow these guidelines may result in damage, injury, or voiding of warranty. Always follow local laws and regulations when performing maintenance or adjustments.