How to Check a Child Car Seat’s Expiry Date and History Before Reusing It

A child seat that has been stored between children may look almost new. Before reinstalling it, find its exact model and expiry information. “We bought it a few years ago” is not enough to establish how much useful life remains.

The starting point: Follow the instructions for that particular Canadian-market seat. Transport Canada says to check the label and instruction manual for manufacture and expiry information, and contact the manufacturer when you need clarification. Do not apply another brand’s lifespan to your seat.

1. Identify the seat before calculating anything

Set aside time to read the labels with the seat safely out of use. Photograph the model name, model number, serial number if shown, manufacture date and any expiry or “do not use after” marking. Keep the photographs readable and together.

If you have an infant carrier and a separate base, identify both rather than assuming one label answers every question. Look up the manufacturer’s instructions for the exact components and Canadian version. A similar-looking model sold elsewhere may not be the same product.

Avoid removing labels or dismantling the restraint to search for a date. If a marking is hidden, damaged or ambiguous, send the manufacturer photographs and ask where to find the information. Do not guess which moulded number is an expiry date.

2. Read what the date actually means

A date of manufacture tells you when the product was made. An expiry date tells you the manufacturer’s stated end of useful life. A receipt documents when it was purchased. Keep these separate and use the starting point specified in the exact manual, not whichever date gives you the longest remaining life.

For example, if a label explicitly says “Do not use after December 2030,” record that wording. If it gives only a manufacture date, find the model’s useful-life instructions or ask the manufacturer to calculate the expiry for you. Do not insert a generic six-, seven- or ten-year assumption.

Transport Canada notes that expiry markings are not themselves required by regulation, but recommends following the model’s instructions and warnings. A missing date is therefore a question to resolve with the manufacturer, not permission to use the seat indefinitely.

3. Confirm history and recalls separately

Health Canada says not to use a second-hand seat when the seller or lender does not know its history. Its checklist also calls for the Canadian National Safety Mark, the correct manual, all required working parts and a seat that has not been in a vehicle during a collision.

Check the exact model against the recall and safety-alert resources linked by Health Canada. Read any notice’s affected model numbers, dates and required action. A vague reassurance that “this brand is safe” does not answer whether that particular seat is affected. Contact the manufacturer if you cannot establish the result or completion of a required remedy.

An unexpired seat can still fail these checks. Conversely, a seller’s clean photos or original box do not establish its history. Keep the decision focused on the individual seat, not how convincing the listing looks.

4. Treat storage and condition as separate checks

Quebec’s SAAQ does not recommend second-hand seats, explaining that their condition and history are difficult to establish. Its guidance also identifies ageing, temperature exposure, spills and poor storage as concerns.

Before using a seat kept from an older child, review its history honestly. If you cannot confirm how it was stored, whether parts are missing or whether it was in a collision, stop and obtain appropriate advice. Do not improvise replacement padding, harness parts or cleaning methods to make it look ready. Follow the manufacturer’s instructions.

Send a useful question to the manufacturer

• Identify the Canadian model and include clear label photographs.
• Ask for the exact expiry date and the basis used to determine it.
• Describe any missing label, component or uncertainty about history.
• Ask whether an applicable recall has a required remedy and how to confirm completion.
• Keep the written answer with the manual and purchase record.

You do not need to post your child’s personal details or the seat’s identifiers in a public comment thread to obtain this information. Use the manufacturer’s official support channel.

Once the seat passes these checks

Confirm that it still fits the child and can be installed in the intended vehicle according to both manuals. This guide checks identity and useful life; it is not an installation inspection. Our family test-drive guide covers assessing vehicle fit, but the seat and vehicle instructions remain essential.

If the seat has expired or its safe use cannot be established, do not pass the problem to another family. Ask the manufacturer and your local waste or recycling service about disposal options, and keep it clearly separated from seats still in use.