Mimi LUNO Stroller Troubleshooting Guide

Posted by Angie Hough on March 25, 2026

If something does not feel quite right with your Mimi LUNO stroller, many issues can be resolved with a few simple checks.

This guide covers common setup, folding, wheel, seat, adapter and harness situations, with practical steps to help you check the stroller before use.

Watch Mimi LUNO setup and everyday use tutorials.

For full system guidance, see the Mimi LUNO Travel System Guide.

Quick Answer

If your stroller is not functioning as expected:

Check that all parts are correctly attached and locked.
Check that the stroller is being folded or unfolded in the correct sequence.
Confirm that no fabric, straps, loose items or debris are obstructing movement.
Check that the wheels, seat, carrycot or adapters are correctly aligned before attaching.
Stop using the stroller if any part does not lock securely or appears damaged.

Most setup issues are caused by alignment, obstruction or incomplete locking. The stroller should operate smoothly without force when correctly set up.

Before You Troubleshoot

Before checking any component, make sure the stroller is stationary and safe to inspect.

Engage the brake.
Remove your child from the stroller before adjusting or troubleshooting.
Remove loose bags, blankets or accessories that may obstruct movement.
Check the relevant product manual or setup guide.
Do not force any component into position.

Why Setup Issues Happen

The Mimi LUNO stroller uses locking points, release buttons and attachment points that need to line up correctly.

If something feels difficult or does not move smoothly, it is often due to:

A part not being fully aligned.
A component not being fully locked.
Fabric, straps or items caught in the frame.
Dirt, sand or debris affecting wheel movement.
The wrong setup sequence being followed.

When correctly set up, the stroller should move, fold and attach without excessive force.

Common Issues and Practical Checks

Stroller Not Folding Properly

If the stroller is not folding smoothly, check the setup before applying pressure.

Check that the stroller seat is positioned correctly for folding.
Remove loose items from the basket, frame and handle area.
Check that no fabric, straps or objects are caught in the frame.
Follow the folding sequence in the correct order.
Do not force the fold if resistance continues.

See the folding and unfolding guide.

Watch how to fold and unfold the stroller.

Stroller Not Unfolding or Locking Open

If the stroller does not open fully or does not click into place, check the frame lock and joint alignment.

Release the folding lock fully.
Lift the handlebar until the frame opens into position.
Listen for the locking click where applicable.
Check that all frame joints are aligned.
Do not use the stroller until the frame is fully locked open.

Always confirm the stroller frame is locked open before placing your child in the stroller.

Seat Not Locking Into Place

If the stroller seat does not attach smoothly, it may not be aligned with both attachment points.

Remove the seat and realign it with the frame attachment points.
Lower the seat evenly on both sides.
Press down until both sides engage.
Listen for a click on each side where applicable.
Gently check that the seat is secure before use.

Do not use the stroller seat if only one side appears locked or if the seat feels loose.

Carrycot Not Attaching Properly

If the carrycot does not attach smoothly, check that it is aligned correctly on both sides of the stroller frame.

Make sure the stroller is stationary and the brake is engaged.
Align the carrycot with both attachment points.
Lower it evenly into place.
Confirm both sides are locked before use.
Do not use the carrycot if either side feels loose or unclear.

The LUNO carrycot is for lie-flat newborn outings outside the vehicle. It must not be used for car travel.

AVARO Car Seat Not Attaching Properly

If AVARO does not attach smoothly to the LUNO stroller frame, check the adapters first.

Check that the correct car seat adapters are being used.
Attach the adapters to AVARO first, then connect AVARO to the LUNO stroller frame.
Align both sides carefully before lowering the car seat onto the frame.
Confirm a secure connection on both sides before use.
Do not use AVARO on the stroller frame if either side does not lock clearly.

Car seat adapters are included in the LUNO 3-in-1 and LUNO Complete 4-in-1 setups. They are not included in the LUNO 2-in-1.

See the car seat to stroller guide.

Wheels Not Clicking In

If a wheel does not click into place, check alignment and the wheel socket.

Align the wheel with the correct wheel housing.
Push firmly until it clicks into place.
Check for dirt, sand or debris in the socket.
Remove and reinsert the wheel if it does not feel secure.
Do not use the stroller until all wheels are fully locked.

Wheels Not Moving Smoothly

If the wheels feel stiff, noisy or uneven, check for dirt or obstruction.

Inspect the wheel area for sand, dirt, hair or debris.
Clean around the wheel and axle area.
Check that each wheel is properly attached.
Check whether the front wheel swivel lock is engaged where applicable.
Test movement again on a clear, flat surface.

For South African conditions, regular wheel checks are useful after use on sand, grass, gravel, brick paths or uneven pavements.

Harness Feels Loose, Twisted or Uneven

If the harness does not feel right, stop and adjust it before moving.

Check for twisted straps.
Make sure the straps are routed correctly.
Adjust the harness according to your child’s size.
Tighten using the correct adjustment strap.
Confirm the harness is snug but not uncomfortable.

See the harness adjustment guide.

Brake Feels Stiff or Does Not Engage Clearly

If the brake feels stiff or unclear, check the wheel area and brake mechanism before use.

Make sure the stroller is on a stable surface.
Check whether debris is blocking the brake area.
Engage and release the brake gently.
Confirm that the stroller does not move once the brake is engaged.
Do not use the stroller if the brake does not hold securely.

What This Means for You

Many stroller issues are minor setup or alignment checks rather than product faults.

However, parents should not continue using the stroller if a component does not lock securely, feels loose, appears damaged or behaves differently after normal checks.

For first-time setup, see the stroller setup guide.

Important Safety Notes

Never force any part into position.
Always ensure all locking mechanisms are fully engaged before use.
Do not adjust or troubleshoot the stroller while your child is seated in it.
Stop using the stroller if any component does not lock securely.
Stop using the stroller if a part appears damaged, loose or unstable.
Use only approved parts and accessories.
Contact Mimi Baby support if issues continue after basic checks.

Practical Maintenance Tips

Perform quick checks before each outing.
Keep wheel sockets and moving areas clean.
Check for sand, dirt or debris after outdoor use.
Store the stroller properly when not in use.
Confirm all attachments are secure after changing modes.
Check the brake before placing your child in the stroller.

Frequently Asked Questions

Why is my LUNO stroller not folding smoothly?
This is often caused by seat position, an obstruction, loose items or the folding sequence not being followed correctly. Remove any obstruction and follow the folding guide before trying again.

What should I do if something feels loose?
Stop using the stroller and check all attachment and locking points. Do not continue using the stroller if anything remains loose or unclear.

Why are the wheels not moving smoothly?
Check for sand, dirt, hair or debris around the wheel area. Also confirm that the wheels are fully attached and that swivel locks are not engaged unintentionally.

Can I use the stroller if one side of the seat clicks but the other side does not?
No. Both sides must be securely attached before use.

When should I contact Mimi Baby support?
Contact support if the issue continues after basic checks, if a part appears damaged, or if any locking mechanism does not engage securely.

Related Guides

Explore the Full System

If you are comparing LUNO setup options or want to understand how the stroller, carrycot, AVARO infant car seat and accessories work together, explore the full range.

View the Mimi LUNO Range

Important Note for Parents

This guide provides general troubleshooting support for the Mimi LUNO stroller and related stroller-frame attachments.

It does not replace the product manual, product-specific instructions or professional guidance where needed.

Always stop using the stroller if any component does not lock securely, appears damaged or feels unstable. Contact Mimi Baby support before further use if you are unsure.

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