Installation of One 3
Step-by-Step Guide: Installing your One 3
The Axkid One 3 is designed with innovation and user-friendliness in mind, making installation both smooth and straightforward. This detailed step-by-step guide walks you through the process of installing the Axkid One 3 safely and securely. From connecting the ISOFIX arms to adjusting the seat for optimal comfort and protection, this guide gives you the confidence and support you need for a safe and easy installation.
For more detailed instructions, please refer to the full Axkid One 3 manual.
Installation guide for Axkid One 3


Start by folding down the support leg. This adjustable leg adds essential stability and helps prevent movement in the event of a collision.


Slide the release button to adjust the rebound bar. This safety feature helps prevent the seat from rotating or tipping forward during impact.


Place the car seat in the back seat of your vehicle and align the ISOFIX arms with the vehicle’s ISOFIX anchorage points. Push the seat until you hear a click and see the indicator turn green. The smart ISOFIX connection makes installing the Axkid One 3 both fast and secure—ideal for busy parents.


Turn the knob on the rebound bar until you hear a series of clear clicks. This helps ensure the seat is firmly secured and minimizes the risk of incorrect installation.


Adjust the support leg until it stands firmly against the floor of your car. If needed, slightly lift the seat to allow the leg to lock properly into place.


Remove the plastic cover from the ASIP attachment point on the seat, then slide the ASIP into place until it locks securely. This feature provides enhanced protection for your child in the event of a side collision.


Use the “Sleep Well” adjustment knob to set the seat to the most comfortable position for your child. The Axkid One 3’s flexible recline feature makes it easy to find the perfect position for both short trips and long journeys—adding to your child’s comfort every time you travel.


Press the button located inside the harness buckle or belt strap to loosen the internal harness. This makes it easier to place your child in the seat, especially during busy or stressful moments.


Place your child in the seat, ensuring that the headrest is aligned with the top of their head. Tighten the internal harness by pulling on the strap until it fits snugly but comfortably across your child’s body.
Axkid One 3 offers adjustable legroom using an innovative sliding system. You can easily move the seat forward or backward to provide your child with extra space and comfort. This flexible solution allows for extended rear-facing use—making it a smart and long-lasting choice for growing families.
Not sure if the Axkid One 3 is right for your car? Visit our vehicle-list to easily see where in your vehicle the car seat can be installed.
Want to learn more about why the Axkid One 3 is the best choice for your child? Explore the One family to discover smart safety features, thoughtful comfort solutions, and helpful tips on how the seat adapts as your child grows—for a safe and comfortable ride, every day.