CYBEX Sirona S Newborn to 105cm Car Seat

No, this car seat is not approved for use on an airplane.

CYBEX strongly recommend that you replace a car seat after any kind of accident. This is because tiny hairline cracks, which may not be visible to the naked eye, can appear in the plastic parts of a car seat after an accident. These cracks can pose an increased risk to safety.

Please refer to the retailer where you bought your CYBEX car seat. They will deal with the matter on your behalf.

You can order replacement parts from a specialist retailer near you. To find a store near you, simply go to the Store Locator on the CYBEX Website.

Please observe the instructions in the User Guide. Adjust the child car seat to the size of your child and make sure that he or she is properly strapped in to ensure maximum safety.

As with any other restraint system, a car seat can only fully protect your child if he or she is secured correctly and does not actively try to leave the car seat. Please explain to your child the importance of staying in the car seat before you travel. Common issues include the opening of belt buckles or the pulling down of shoulder belts on car seats secured by a harness. Make sure that the belts are fitting nice and snug, you should also consider what clothes your child is wearing while sat in the car seat, as thick clothing reduces the protection offered by the belt. You can keep your child safer by purchasing the SensorSafe chest clip accessory. It helps prevent the child from slipping out of the harness and if your child manages to open the clip, you will be instantly alerted via push notification on your smartphone. Please refer to the User Guide for further instructions and information.

Car seats can be cleaned using a vacuum cleaner or damp cloth. Sand or other dirt beneath the cover can also be removed in this way. To clean the plastic parts of the car seat wipe them with a cloth using a mild detergent and warm water. (Warning: Please do not use chemical detergents or bleaching agents under any circumstances.) Please note that a car seat should never be dismantled for cleaning. Please always refer to your car seat’s User Guide when carrying out care and maintenance on your car seat. Generally the seat covers are machine washable at a maximum temperature of 30˚C on a delicate cycle. If you wash them at a higher temperature, the cover fabric might lose its color or shrink. Please wash the cover separately and never dry it by machine or in direct sunlight. (Warning: Only the cover of the car seat can be machine washed. The car seat itself is not machine washable.) Should you wish to clean a car seat more thoroughly than recommended above, you will have to have it cleaned professionally. Please ask the retailer who sold you the car seat to refer you to a professional service.

The newborn inlay has to be removed when your infant reaches a height of 60 cm (corresponding to approximately 3 months). This ensures that your growing baby has enough space in the car seat. The removable newborn inlay is not included with the car seat and can be purchased separately as an accessory.

Once the child exceeds 15 months of age and has reached a minimum size of 76 cm you are allowed to use the forward-facing position of your Sirona car seat. This is not a must. We rather recommend transporting children in the Sirona's rear-facing position for as long as possible. The car seat allows rear-facing travel up to a height of 105 cm (approx. 4.5 years).

First, select an appropriate vehicle seat. Unfold the load leg until it locks with an audible CLICK. Release the buttons of the ISOFIX locking arms and push them out of the base to their furthest extent. Insert the arms into the ISOFIX anchorage points (make sure they lock with an audible CLICK and that the safety indicators show green). Push the base towards the backrest of the vehicle seat until it is fully aligned with the backrest. Moving the whole car seat back and forth, and from side to side will further brace it against the backrest. Always make sure that the load leg is extended (pull out the load leg by pushing the adjustment button until it touches the vehicle floor and the indicator on the front panel shows green). Finally, make sure the Sirona S is installed on the base rear-facing to ensure maximum safety for your child.

CYBEX generally advises against switching to the next car seat prematurely. Even if your child’s feet protrude outside the car seat, your child has not necessarily grown out of the seat. However, if your child's head is protruding above the top edge of the highest headrest position, is taller than 105 cm, or weighs over 20 kg, it is time to change the car seat as it no longer affords sufficient protection to the vulnerable neck and head area. After changing the car seat, your child’s head should be positioned within the protective area of the height-adjustable headrest.

Rear-facing car seats must only be installed on the passenger seat if the front airbag has been deactivated. Placing your child on a passenger seat with an activated airbag poses an enormous risk of injury, and CYBEX strictly advise against this. For other types of car seats check the user manuals of both your car seat and your vehicle to find out if you should deactivate the airbag. Statistics show that the safest place for a car seat is on the rear seat behind the front passenger seat. Side airbags do not put your child’s safety at risk. If you have no choice other than to use the front passenger seat, please ensure that the seat is pushed back as far as possible and that the airbag is deactivated.

It is not permitted to use the car seat on laterally-facing vehicle seats.

No. This car seat cannot be used on rear-facing vehicle benches.

No, this seat can only be installed in vehicles with ISOFIX anchorage points, due to the fact that it must be installed with ISOFIX in every position.

Although it may be possible to install a CYBEX car seat on other seats in the vehicle, the safest place for a car seat is in the rear seat, behind the front passenger seat. CYBEX advises you to refer to the Car Compatibility Tool on the CYBEX Website. You can scan the dedicated QR-Code on your Quick Start Guide or use the specific weblink, provided on the Packaging Box, to access the Car Compatibility Tool for your product.

Yes, the side airbag can remain activated when using the car seat.

Only a headrest adjusted to the optimum height will give your child the best possible protection and comfort. The height can be adjusted to various positions. The headrest must be adjusted so there are no more than 3 cm (approx. two fingers) between the child’s shoulders and the bottom of the headrest.

As soon as a car seat is installed in a vehicle, it may be exposed to high temperatures and high levels of light intensity. As a result, even high-quality and extremely age-resistant plastics such as those used by CYBEX can display certain age-related alterations. To ensure the safety of your child, CYBEX strongly recommends that the seats are not used for longer than the prescribed usage periods. A car seat will be designed to keep your child safe for a specific period in their development, for example from birth (with newborn inlay as an accessory) to approximately 4.5 years old for a Sirona S Series seat. Sometimes they can be used for longer, for example CYBEX products for babies and toddlers can also be used for a sibling. To find out the approximate lifespan of your CYBEX car seat, refer to the User Guide or contact CYBEX Customer Service.

The Linear Side-impact Protection (L.S.P.) reduces the forces of a side-impact collision and thus also the risk of injury. CYBEX advises parents to install or fold out the L.S.P. on both sides of the car seat but especially the door side. However, if there is insufficient space on either side of the car seat, the car seat can still be used without unfolding the LSP.

Thick clothing prevents the harness/vehicle belt or impact shield from lying tight against the body of the child. Only a correctly adjusted restraint system can offer maximum protection. For this reason, your child should wear everyday clothing. Thick clothing such as winter jackets and clothing with hoods (e.g. hoodies) as well as hats should be avoided where possible. Once your child has been positioned in the car seat, he/she can be covered with an extra blanket for warmth.

The diameter of a bottle should not be larger than 7 cm.

The comfort inlay has to be removed when your child reaches a height of 85 cm (corresponding to approximately 1.5 years). This ensures that your growing child has enough space in the car seat.

Yes, both are washable. CYBEX recommends using a delicate wash cycle and a maximum temperature of 30 degrees Celsius. Detailed instructions can be also found in the User Guide.

The Base S Adaptor is designed for use with the Cloud S and must be removed when changing to the Sirona S or Anoris S Airbag once your child is big enough.

The Sirona S can be used by toddlers between 61 cm and 105 cm in height and up to a maximum bodyweight of 20 kg (approx. 4.5 years). With the newborn inlay, the seat can be used from 40 cm. The newborn inlay is not included with the car seat and can be purchased separately as an accessory.

The Comfort Inlay should be used until your child is 85 cm tall to give them much needed support and comfort thanks to its soft, adaptive layer cushions. The comfort inlay is included with the Sirona S car seat for your convenience.

i-Size is a European standard for car seats. Among other regulations i-Size states that infants must travel in a rear-facing position before the child's age exceeds 15 months and that side-impact protection is tested. To find out more about i-Size, check the CYBEX Safety page on the CYBEX Website.

On either side of the car seat there are little openings in the fabric of the seat cover. Pull the fabric of the seat cover slightly open at this point and insert the cup holder into the opening. To remove it, pull the cup holder upwards.