Diono Radian 3QXT+ Latch Convertible Car Seat | live price, prepared checkout

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• Deep research: We read the maker's manual, independent reviews, video review transcripts and the store's own page, and publish each finding with its source and the date read. check_product returns them with a source for each. This product: 18 checked facts, research depth trimmed read, checked 2026-09-25T04:14:53.217Z, in the evidence pack.
• Receipts: Every published fact has a receipt showing its source quote. check_product and get_product return the checked facts that have one. This product: each checked fact listed below has one; the source quotes are in the evidence pack.
• Safety: check_product asks the product-safety regulators live (US CPSC, NHTSA and FDA, Health Canada, the UK's OPSS, Australia's ACCC) whether a recall names a product, listed here or not, and flags a match with its notice; a recall never blocks the buyer. This product: this page holds no recall result for it yet; check_product asks the regulators now.
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• Second-hand listings: check_listing runs the same recall check on a second-hand listing someone found, and adds what the listing leaves out and the price new.
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• Research from other stores: Coming soon: reading other stores' listings of the same product as research sources.

Checked facts

Each fact below was checked against the source it cites before it was published. Each carries that source's link and the time RoboTrunk read it. 18 checked facts, checked 2026-09-25T04:14:53.217Z. Research depth: trimmed read. Deep read: the store's own data and 6 outside pages (the store's own product page; recall notice; regulator recall search (CPSC (United States)); regulator recall search (Health Canada); regulator recall search (ACCC Product Safety Australia)), each read in full by RoboTrunk and trimmed to its main content, then written up and checked. Facts from the maker or a manual quote the page word for word; what real users report is summarised with a link to the page read. Recall status was checked directly with CPSC (United States), Health Canada, ACCC Product Safety Australia: Transport Canada recall 2024-718 applies to exact model numbers 53000-NA-01 and 53001-NA-01 manufactured from December 2019 through November 2024, but only listed serial-number prefixes are affected. The issue concerns rear-facing UAS installation in Canada; affected owners should use the vehicle belt rear-facing until installing Diono's free remedy kit. The supplied US CPSC search returned no records. The Australian feed covered only the 100 most recent recalls and therefore cannot rule out older notices.

• Modes and limits: It supports rear-facing from 4–50 lb, forward-facing from 22–65 lb and high-back booster use from 40–120 lb.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Canadian recall scope: A Canadian non-compliance notice includes exact model numbers 53000-NA-01 and 53001-NA-01 when made from December 2019 through November 2024, subject to the listed serial-number prefixes.. Source: https://tc.canada.ca/en/road-transportation/defects-recalls-vehicles-tires-child-car-seats/diono-radian-3qx-car-seats-non-compliance-canada-motor-vehicle-safety-standards (guide), read 2026-09-25T04:07:30.231Z.
• Height limit: The maximum user height is 57.1 inches (145 cm).. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Recall issue: Affected Canadian seats may fail regulatory requirements when installed rear-facing with UAS, potentially increasing injury risk in a crash.. Source: https://tc.canada.ca/en/road-transportation/defects-recalls-vehicles-tires-child-car-seats/diono-radian-3qx-car-seats-non-compliance-canada-motor-vehicle-safety-standards (guide), read 2026-09-25T04:07:30.231Z.
• LATCH limits: Rear-facing LATCH use is limited to 35 lb, and forward-facing LATCH use is limited to 40 lb.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Recall remedy: For an affected seat, Diono advises rear-facing installation with the vehicle belt instead of UAS until the free foam-insert remedy kit is installed.. Source: https://tc.canada.ca/en/road-transportation/defects-recalls-vehicles-tires-child-car-seats/diono-radian-3qx-car-seats-non-compliance-canada-motor-vehicle-safety-standards (guide), read 2026-09-25T04:07:30.231Z.
• Dimensions: Open dimensions are 28.5 inches high by 17 inches wide by 16 inches deep; folded depth is 11.5 inches.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Seat weight: The seat weighs 34.2 lb.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Vehicle fit: Its 17-inch-wide slim design is advertised to permit three-across installation in most vehicles, not every vehicle.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Installation: It uses a soft LATCH system, which the store describes as easy and secure to install.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Safety construction: Safety features include a steel anti-rebound bar and six layers of side-impact protection.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Headrest: The headrest adjusts with one hand through 12 positions.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Air travel: The seat is described as FAA-approved for airline use.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Booster rating: The store says it received an IIHS Best Bet Booster rating.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Care: Machine-wash the covers cold and line-dry them; spot-clean the shell and components, never submerge them, and store the seat dry and shaded.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Warnings: Check secure installation before every use, do not use the seat with broken or missing parts, fasten the harness properly and remain within its limits.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Included items: The package contains the seat, manual, two cup holders, Safe Stop, lap-belt cushion, rear-facing base, infant liner, newborn high wedge, newborn insert, anti-rebound panel and calf support.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.
• Warranty: The retailer states that the seat carries the full manufacturer warranty, but gives no term or coverage details.. Source: https://anb-baby.myshopify.com/products/diono-radian-3qxt-latch-convertible-car-seat-black-jet (guide), read 2026-09-25T04:07:17.166Z.

The full evidence pack, with every citation, source and gap.

Questions we researched but could not confirm

Every fact above is cited. To find them we read the store listing, a regulator's recall notice and the recall records of CPSC (United States), Health Canada and ACCC Product Safety Australia. We also chased the questions below across those sources and found no reliable answer, so you know exactly where the evidence ends and never have to guess.

• What fabric and padding materials are used?
• How soft or firm does the upholstery feel?
• Is the padding thin or thick?
• Does the fabric or finish wear, pill, fade or rub off?
• Which exact vehicles accommodate three seats across without rubbing or protruding?
• Does rear-facing installation reduce front-passenger legroom?
• What tools, if any, are required for installation?
• How difficult is vehicle-belt installation compared with LATCH installation?
• Which components most often wear out or break?
• What are the manufacturer's warranty duration and exclusions?
• What is the fourth mode claimed by the listing?
• What are the child's minimum and maximum ages for each mode?
• Is FAA approval limited to harness mode rather than booster mode?
• Does this seat meet applicable US safety standards?
• Does this seat meet applicable Australian safety standards?

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