How to Properly Install a Doona Car Seat in Your Vehicle: A Step-by-Step Guide

Installing a car seat correctly is one of the most important things you can do to keep your baby safe on the road. The Doona car seat and stroller system is uniquely designed to transition from car to stroller in seconds, but proper installation in your vehicle is still essential. Whether you are a first-time parent or need a refresher, this guide will walk you through every step of the process.
In this article, we will cover everything from choosing the right seat position to securing the base, adjusting the harness, and using accessories like the Doona X Rain Cover and Doona Winter Cover to protect your little one in all weather conditions. Let’s get started.

Step 1: Choose the Correct Seating Position
Before you begin the installation, select a rear-facing seat in your vehicle. The back seat is the safest location, and the middle seat is often preferred because it offers the most protection from side-impact collisions. However, if your vehicle does not have a compatible LATCH system in the middle, choose an outboard seat with LATCH anchors.
Check your vehicle owner’s manual to confirm which seats are approved for car seat installation. Some vehicles have specific requirements for rear-facing seats, such as a minimum seat angle or a prohibition on using certain seat belts. Always follow both the car seat and vehicle manuals.
- Always install the Doona car seat in a rear-facing position until your child reaches the maximum height or weight limit (typically around 35 inches or 32 pounds).
- Never place a rear-facing car seat in front of an active airbag, as this can cause serious injury.
Step 2: Install the Base Using the LATCH System or Seat Belt
The Doona car seat comes with a base that can be installed using either the LATCH system (lower anchors and tethers for children) or the vehicle’s seat belt. Both methods are equally safe when done correctly. Start by threading the LATCH connectors through the base’s belt path and attaching them to the vehicle’s lower anchors. Push down firmly on the base while tightening the strap to remove any slack.
If using the seat belt, pull the belt all the way out to engage the locking mechanism, then thread it through the same belt path. Buckle the belt and press down on the base while pulling the belt tight. Ensure the base does not move more than one inch side-to-side or front-to-back at the belt path.
- Use a rolled towel or pool noodle under the base if you need to adjust the recline angle for a level installation.
- The Doona base has a built-in level indicator. Make sure the bubble is within the green zone for newborns (angle A) and within the blue zone for older infants (angle B).
Step 3: Secure the Doona Car Seat onto the Base
Once the base is firmly installed, it is time to attach the Doona car seat itself. Lift the car seat and align it with the base. You will hear a distinct click when it locks into place. Gently tug upward on the car seat to confirm it is securely attached. The red release button on the base should be flush and not easily pressed.
If you plan to use the Doona as a stroller frequently, you may want to keep the base installed in the car and simply click the seat on and off as needed. This is one of the greatest conveniences of the Doona system. For extra storage, consider adding the Doona Snap-on Storage to the stroller frame for diapers, wipes, and other essentials.
- Practice attaching and detaching the car seat a few times at home before your first trip.
- Always double-check that the seat is locked before driving, especially if you have removed and reattached it.
Step 4: Adjust the Harness for a Snug Fit
A properly adjusted harness is critical for your baby’s safety. The harness straps should be at or below your baby’s shoulders for rear-facing use. Place your child in the seat, pull the harness over their shoulders, and buckle the chest clip at armpit level. Tighten the harness until you cannot pinch any excess webbing at the shoulder.
The chest clip should be positioned at the middle of the chest, not near the neck or stomach. For newborns, use the included infant insert to provide extra support and ensure the harness sits correctly. As your child grows, remove the insert and adjust the headrest height accordingly.
- The harness should be snug enough that you cannot fit more than one finger between the strap and your child’s collarbone.
- Avoid bulky clothing or thick jackets under the harness, as they can compress in a crash and create slack. Instead, use the Doona Winter Cover to keep your baby warm without compromising safety.
Step 5: Final Safety Checks and Common Mistakes to Avoid
After installation, perform a thorough safety check. The base should not move more than one inch in any direction. The car seat should be level, and the harness should be snug with the chest clip at armpit level. Check that the seat belt or LATCH strap is not twisted and that the buckle is not pressing into your child’s body.
Common mistakes include installing the base too loosely, forgetting to lock the seat belt, or using both the LATCH system and the seat belt together (which is not recommended unless specifically allowed by the car seat manual). Also, avoid using aftermarket accessories not approved by Doona, such as non-branded seat protectors or strap covers, as they can interfere with the seat’s performance.
- Always register your Doona car seat with the manufacturer to receive safety recall notices.
- Replace the car seat after any moderate or severe crash, even if it appears undamaged.
Proper installation of your Doona car seat gives you peace of mind every time you hit the road. By following these steps and performing regular checks, you ensure your baby travels safely and comfortably. For added convenience, explore the full range of Doona accessories, including the Doona i Car Seat & Stroller Desert Green, to complete your travel system. Visit our store to find everything you need for a safe and stylish journey.