Diono Radian Car Seat Instructions: Installation, Cleaning & More

This article is going to cover everything parents need to know about the Diono Radian RXT car seat. We’ll go over all the different ways you can install this seat, how to keep it clean, and everything else you need to know.

Let’s get started with the installation:

Diono Radian RXT Installation Instructions

Before we get started, make sure you review the manual that we have linked below. This will let you know the height and weight requirements for installing your car seat in the forward facing position. After you have checked out the manual, here’s how you can install this car seat in every configuration.

1. Diono Radian RXT installation forward facing

 

This section of our guide covers the basics of installing your new Diono Radian RXT car seat.

1. 1The first step in installing this car seat is making sure that you’ve read both the car seats manual and your vehicles manual for installing car seats.
2. 2Adjust the car seat as needed for the size, age, and weight of your child.
3. 3Place the car seat on to the desired seat in your vehicle.
4. 4Latch the tethering strap per your vehicle’s instructions, but do not tighten it.
5. 5Route to the seat belt through the proper belt pouch for your chosen installation method.
6. 6Make sure that the seat is sitting level and its proper position.
7. 7Tighten the tethering strap.
8. 8If properly installed, the seat should move no more than one inch in any direction.

This video will show you how to do a forward facing installation for the Diono Radian RXT.

2. Diono Radian RXT rear facing installation

 

Knowing how to install your car seat in the rear facing orientation is a must for parents and Guardians. Here’s how to complete this installation quickly and easily.

1. 1Turn the car seat on its side and route the super latch strap through the proper channel.
2. 2Press the legs of the car’s seat into the base of the vehicle’s seat.
3. 3Attach the super latch strap to the anchors inside the vehicle’s seat.
4. 4Press down on the base of the car seat while tightening the super latch strap to remove all slack.
5. 5Once the installation is complete, the car seat should move no more than one inch in any direction.

This video guide quickly goes over how to use the super latch strap to install this car seat in the rear facing position.

3. Diono Radian RXT seat belt installation

 

Installing this car seat using a seatbelt is very easy.

1. 1First make sure your car seat is sitting flush with the actual seat of the car.
2. 2Now we’re out the seat belt through the channels on the back of the car seat. These channels will be marked, so you can clearly see them and easily find them.
3. 3Connect the seat belt.
4. 4Pull out the wedding of the seat belt until you hear a click. This means the seatbelt is now locked.
5. 5Inspect the car seat to make sure that it moves no more than an inch in any direction.

1. 1First make sure your car seat is sitting flush with the actual seat of the car.
2. 2Now we’re out the seat belt through the channels on the back of the car seat. These channels will be marked, so you can clearly see them and easily find them.
3. 3Connect the seat belt.
4. 4Pull out the wedding of the seat belt until you hear a click. This means the seatbelt is now locked.
5. 5Inspect the car seat to make sure that it moves no more than an inch in any direction.

Here’s a quick video that shows you how to install this car seat with a seatbelt.

4. Diono Radian RXT installation with angle adjuster

 

The angle adjuster will help increase the legroom of individuals sitting in seats in front of the car seat. Here’s how to install one.

1. 1Make sure that your car seat is installed in the rear facing position.
2. 2Insert to the angle adjuster underneath the car seat.
3. 3Inspect the car seat to make sure that it is still securely fastened and safely in place.

This video will guide you through installing the angle adjuster.

5. Diono Radian RXT installation center back seat

 

There are a few different ways to install this car seat in the center back seat of your vehicle. This will depend on the type of vehicle you own and its specifications. Follow these instructions for one of the most common ways to accomplish this installation.

1. 1Attach the detachable base and lock it in place.
2. 2The feet of the car seat go into the seat bite of the vehicle.
3. 3The Diono Radian RXT should be sitting completely on the vehicle’s seat.
4. 4Route the seat belt through the rear-facing belt path.
5. 5Pull the seat belt webbing all the way out until you hear it click.
6. 6Push down on the seat and pull out all the slack.
7. 7Feed the seat belt slack back into the vehicle
8. 8The car seat should move no more than one inch in any direction when safely installed.

This video will show you one method for installing your car seat in the center back seat of your vehicle.

6. Diono Radian RXT installation without latch

 

There are plenty of occasions where you’ll need to install your car seat without using the built-in latch. Here’s a step-by-step guide for installing this car seat without the use of a latch.

1. 1The first step is to follow your vehicle’s specifications for locking the seat belt. Each vehicle is different, and you’ll need to follow the specifications exactly.
2. 2Install your car seat so that it sits level in the vehicle’s seat.
3. 3Connect the top tether of the car seat to the appropriate connector on the back of the vehicle seat.
4. 4Route to the seat belt through the proper channels in the car seat.
5. 5Pull out the webbing of the seatbelt until you hear a click inside your vehicle.
6. 6Tighten the straps of the seatbelts until there is no slack.
7. 7Feed the excess seat belt webbing back into your vehicle.
8. 8Once properly installed, your car seat should move no more than one inch in any direction.

This video gives you a quick guide to installing this brand of car seat without using the latch.

7. Diono Radian RXT installation on airplane

 

Flying with children can be a big challenge. This step-by-step guide will help you tackle installing a car seat so that the rest of your trip can be a breeze.

1. 1The first step is to call the airline ahead of time and ask them about any requirements and specifications for installing a car seat during your flight.
2. 2Unfold your car seat before boarding the plane.
3. 3As you board the plane, make sure to ask the flight attendants for a seat belt extender as these will make the installation easier and safer.
4. 4You’ll want to install the car seat in the window seat of the airplane. This allows other passengers to safely move around the airplane without potentially bumping into the car seat or your child.
5. 5Install the seat belt extenders. You can ask the flight attendant for assistance during this step.
6. 6The next step will be very similar to how you install this car seat in your vehicle. Feed the airplane seat belts through the appropriate channels in your car seat.
7. 7Tighten the airplane seat belt and make sure that the car seat can move no more than one inch in any direction.
8. 8This installation will be different depending on the airline you are flying with. Always make sure to check ahead about the specifications of installing a car seat on a particular type of airplane.

This video guide will show you all the basics for installing a car seat on an airplane.

8. Diono Radian RXT cup holder installation

 

Here’s how to attach a cup holder to your car seat.

1. 1Lift the fabric on the side of the car seat you want to attach the cup holder to.
2. 2Feed the cup holder attachment through the fabric of the car seat.
3. 3With a twisting motion, push down on the cup holder and pull the car seat fabric back over the seat.
4. 4Repeat this step as needed for however many cup holders you wish to attach.

This video guide will quickly show you how to install a cup holder on your Diono Radian RXT.

Diono Radian RXT Cleaning Instructions

Here’s how you can keep your car seat clean no matter what mess comes your way.

1. How to wash Diono Radian RXT seat cover

 

Cleaning your car seat has never been easier thanks to these step-by-step instructions. This particular brand recommends using a towel with warm soapy water and avoiding any harsh cleaning chemicals. Here are the step-by-step instructions for getting this car seat clean.

1. 1Remove the seat cover and memory foam from the car seat shell.
2. 2Wipe down the car seat shell with a towel and warm soapy water.
3. 3Wipe down the memory foam with a damp cloth.
4. 4The car seat cover can be washed in a front loading washing machine with a gentle detergent.
5. 5Line dry the car seat cover.
6. 6Once dry, reassemble your car seat.

This video will give you a step-by-step guide for cleaning a car seat cover. Keep in mind that the specifics of removing the seat cover can be found in the manual we have linked below.

Diono Radian RXT Adjustment Instructions

Need to adjust your car seat for comfort and safety? This section of the guide will show you everything you need to know to make sure your car seat fits just right.

1. How to adjust Diono Radian RXT headrest

 

Here’s how to quickly adjust the headrest for maximum safety and comfort.

1. 1Remove the Velcro fabric that covers the base of the headrest.
2. 2You can now freely Slide the headrests up and down.
3. 3Adjust the headrests to your desired height and close the velcro fabric cover.

This quick video by Diono will show you how to adjust the headrest.

2. How to recline Diono Radian RXT

 

This brand of car seat reclines with the use of an additional accessory. This guide will show you how to use that accessory to safely recline this car seat.

1. 1Install your car seat in the rear facing position.
2. 2Insert the angle adjuster underneath your car seat.
3. 3Make sure that your car seat is securely tethered and moves no more than 1 inch in any direction.

Check out this video to see how you can use the angle adjuster to recline your Diono Radian RXT.

3. How to tighten Diono Radian RXT straps

 

Here’s how you can adjust the straps on your Diono Radian RXT car seat.

1. 1Uninstall your car seat.
2. 2On the back of the car seat you will find a hook that connects the straps together.
3. 3Unhook the straps.
4. 4Threat the straps through a higher or lower channel depending on your desired adjustment.
5. 5Reconnect the straps to the hook.
6. 6Reinstall the car seat.

This video will show you how to adjust the straps on this car seat.

4. How to convert Diono Radian RXT to booster

 

If you need to convert your car seat into a booster, this is the step-by-step guide you need.

1. 1Unhook the harness from the buckle in the back of the car seat.
2. 2Remove the locking chest strap on the front of the car seat.
3. 3Hold the harness out through the top of the front of the car seat.
4. 4Unscrew the plate on the left side of the car seat using a Phillips screwdriver.
5. 5Fully remove the harness.
6. 6Repeat this step for the other side.

This quick video guide will show you how to convert this car seat into a booster.

5. How to adjust head support on Diono Radian RXT

 

1. 1Remove the fabric that covers the base of the headrest.
2. 2You can now freely slide the headrests up and down.
3. 3Adjust the headrests and close the fabric cover.

This video guide covers adjusting the head supports.

6. How to remove Diono Radian RXT base

 

This is how you can remove the base of this car seat.

1. 1List the metal tab.
2. 2Slide the base forward.
3. 3Pull the base away from the car seat.

Diono Radian RXT Manual

The manual for the Diono Radian RXT will give you everything you need to know about the installation instructions and specifications for this car seat. You can get the manual right from the manufacturer’s website by clicking on this link.

• Diono Radian RXT Car Seat Manual