Do you have a question about the Diono Radian 3RXT Safe+ and is the answer not in the manual?
Guidance on product expiration and safe practices for use and storage.
NHTSA recommendations for replacing car seats after moderate or severe collisions.
Transport Canada guidelines for replacing car seats after any vehicle accident.
Identifies major parts like LATCH/UAS, Top Tether, ARB, and installation aids.
Details the harness straps, buckle, pads, and chest clip for securing the child.
Diagram and advice on selecting safe seating locations in a vehicle.
Guidance on using LATCH/UAS anchors, including center seating positions.
Lists vehicle seat belt types that cannot be used with the car seat.
Details safe latch plates and retractors for securing the car seat.
Explains LATCH (US) and UAS (Canada) systems for vehicle installation.
Instructions on how to use a belt locking clip with ELR retractors.
Steps for unfolding the seat, preparing the harness, and adjusting strap positions.
Procedure for tightening the harness, placing the chest clip, and performing the pinch test.
Guidance on adjusting the headrest height based on harness slot usage.
Details rear-facing methods, weight/height limits, and safety recommendations.
Instructions for installing the detachable base and the anti-rebound bar.
Step-by-step guide for rear-facing installation using LATCH/UAS.
Step-by-step guide for rear-facing installation using seat belts.
Details forward-facing methods, limits, vehicle support, and top tether installation.
Guidance on using SafeStop™, adjustable bottom, and overhang rules.
Step-by-step guide for installing the car seat forward-facing using LATCH/UAS.
Using seat belts and lap belt cushion for forward-facing installation.
Details booster mode limits, warnings, and proper belt usage.
Steps for preparing the seat, adjusting head support, and routing belts.
Instructions for installing the car seat on an aircraft, noting booster mode is not certified.
Instructions for attaching the cup holder and adjusting the expandable side wings.
Step-by-step guide for safely removing the car seat harness straps.
Step-by-step guide for installing new harness straps correctly.
Instructions for folding the car seat for storage or transport.
Step-by-step guide for removing the car seat cover.
Instructions for cleaning fabric parts and harness/buckle straps.
Guidance on cleaning plastic components and the center buckle mechanism.
Details on product registration requirements and general warranty periods.
Information on extended warranties, implied warranties, and limitations.
Covers remedy limitations, use of outside parts, reserved rights, shipping, and support.
| Category | Convertible Car Seat |
|---|---|
| Model | Radian 3RXT Safe+ |
| Weight Capacity | 5-120 lbs |
| Rear-Facing Weight Limit | 5-50 lbs |
| Forward-Facing Weight Limit | 22-65 lbs |
| Booster Mode Weight Limit | 40-120 lbs |
| Height Limit | Up to 57 inches |
| Rear-Facing Height Limit | Up to 44 inches |
| Installation Method | LATCH or Seatbelt |
| Foldable | Yes |
| Harness Type | 5-point harness |
| Expiration | 10 years |
| Harness Slots | 12 positions |
| Safety Features | Side impact protection |
| Material | Steel Alloy Frame |
| Fabric | Machine washable, Plush knit fabric |











