Maxi-Cosi FamilyFix Slide Pro Base Recall: What to Do

The Office for Product Safety and Standards (OPSS) has recalled the Maxi-Cosi FamilyFix Slide Pro Base, an ISOFIX car seat base, after finding that its visual fitting indicator can show green — meaning "correctly attached" — even when the car seat is not fully connected to the base. If you own one, the advice from OPSS and Maxi-Cosi is to stop using it immediately and check whether your unit is affected.

What's being recalled

According to the OPSS recall notice (reference 2605-0109), published 28 May 2026, the affected product is the Maxi-Cosi FamilyFix Slide Pro Base, a black ISOFIX base for compatible infant car seats (item reference 8065057110). It covers units manufactured between 6 September 2025 and 24 March 2026, sold through Maxi-Cosi's usual retail network including John Lewis. The recall notice describes the product simply as a "black slide pro base for car seat," made in China, and lists Maxi Cosi as the manufacturer and John Lewis as a named distributor.

Because the fault sits in the base rather than in any specific infant seat shell, it isn't limited to one seat model — any compatible Maxi-Cosi infant car seat clicked into an affected base could be sitting on a base that's misreporting its own fitting status. If you're not sure whether your base falls inside the affected manufacture window, the recall notice points owners to Maxi-Cosi's own website and to John Lewis's product recalls page as the two official routes to check a specific unit.

Why it's dangerous

OPSS describes the fault as a problem with the visual indicator mechanism: if a car seat is detached from the base incorrectly, the mechanism can become disrupted, so that on a later installation the indicator turns green even though the seat isn't properly connected to the base. In OPSS's own words, "although the indicator is green, the car seat might not be properly connected to the base."

That distinction matters because the entire point of a green/red indicator system is to remove guesswork. Parents are specifically told, by manufacturers and by road safety bodies alike, to treat a green indicator as confirmation that a seat is secure — not as one signal among several to weigh up. A false green reading defeats that system: a seat could look correctly fitted, sound like it has clicked in, and still be loose or only partially attached, with the fault only becoming apparent if the seat shifts or comes free while the car is moving. OPSS has assessed the product as not meeting the requirements of the General Product Safety Regulations 2005, which is the standard consumer-safety threshold used to decide when a product must be pulled from use rather than merely flagged.

What to do if you own one

• Stop using the base immediately if it falls within the affected manufacture dates, as instructed in the recall notice.
• Check whether your unit is affected via Maxi-Cosi's website or the John Lewis product recalls page — both are named in the OPSS notice as the routes for verification. You'll typically need the item reference or a batch/date code from the underside of the base.
• Don't rely on the green indicator alone in the meantime. Use an alternative, unaffected base, or a seat-belt installation if your seat supports it, until you've had confirmation from Maxi-Cosi.
• Keep proof of purchase where possible. Recalls of this kind are typically resolved with a free repair, a replacement part, or a replacement base from the manufacturer rather than a simple refund, so having your receipt or order confirmation speeds things up.
• Don't pass the base on — to a friend, via a nursery resale group, or a charity shop — until it's been checked or replaced. Secondhand car seat bases are already a higher-risk category, and passing on a recalled unit compounds that risk for someone else's child.

If you're shopping for a replacement or a first infant car seat, our infant car seat comparison and UK car seat law explainer cover what to look for, including i-Size compliance and the difference between belted and ISOFIX installation.

How to double-check any ISOFIX base is properly attached

This recall is a good prompt to get into the habit of checking an ISOFIX installation beyond the indicator alone, regardless of which brand or model you use. The Royal Society for the Prevention of Accidents (RoSPA's car seat safety guide) recommends extending the ISOFIX connectors on the base or seat, lining them up evenly with both anchor points in the car, and pushing firmly until each side clicks into place. Once both connectors are engaged, RoSPA advises pushing the base or seat back towards the vehicle seat so that it sits flush and snug against it, rather than resting at an angle or with a gap behind it.

Where a base has a support leg, RoSPA notes this needs to be adjusted so it braces firmly against the vehicle floor — many support legs have their own separate colour indicator, which should also be checked independently of the main ISOFIX indicator. A base can show a correct ISOFIX connection while the support leg is still wrong, or vice versa, so both need confirming.

As a physical check alongside any indicator, firmly grasp the car seat or base itself — not just the handle — and try to rock or pull it side to side and front to back. A properly connected base should not move more than very slightly. If it shifts, rocks, or comes loose under this test, it isn't secure, regardless of what colour any indicator is showing. Doing this check every time you reinstall a base, not just the first time, is worth building into your routine, since this recall shows how a fault can develop after a base has been correctly used and then detached and refitted.

If you're ever unsure about an installation, many UK fire and rescue services run free car seat checking events, and some larger retailers offer in-store fitting checks. It's worth using one after any recall-related repair or replacement, and again any time you switch cars or move the seat between vehicles.

Why recalls like this happen

Car seat and base recalls aren't unusual — OPSS publishes a steady stream of notices covering pushchairs, cots, car seats, and other nursery equipment throughout the year, most triggered by manufacturers' own post-sale monitoring or by reports from users. What sets this one apart is that the fault undermines the specific safety feature — the indicator — that the product relies on to reassure a parent it's safe to drive off. It's a useful reminder that an indicator, however well designed, is a mechanical or electronic component that can fail, and that a manual check takes only a few seconds longer than glancing at a light.