Bony Fix car seat: complete installation and use instructions

Car seat Bony Fix - a popular solution for the safe transportation of children from 9 months to 12 years (groups 1/2/3). This model combines ease of transformation, reliable protection in case of accidents and ease of installation thanks to the ISOFIX and seat belts. However, even the safest chair can become dangerous if it is not properly secured or used. In this article we will look at step-by-step installation instructions, nuances of adjustment to the child’s growth, as well as typical mistakes that parents make.

Manufacturer Bony regularly updates its line of chairs, but the basic principles of installation and use remain unchanged. We took into account current safety standards ECE R44/04 and UN R129 (i-Size), as well as recommendations from experts on child passive safety. If you have just purchased Bony Fix or are planning to do this, save this article to your bookmarks: it will be useful at all stages of operation.

1. Equipment and preparation for installation

Before starting installation, check what is in the box with the chair Bony Fix all necessary elements are present. Standard equipment includes:

• 🪑 Main chair with cover
• 🔗 Two hard ones ISOFIX connector (or flexible straps for models without ISOFIX)
• 🔄Adjustable internal five-point harness (for groups 1/2)
• 📏 Instructions in Russian (often in the form of a sticker on the case)
• 🔧 Key for adjusting the height of the headrest (in some modifications)

Pay special attention to chair marking. The sticker on the side or back should indicate:

• 🏷️ ECE R44/04 or UN R129 — safety standard
• 👶 Weight group (for example, 9–36 kg)
• 📅 Production date (important for warranty)

⚠️ Attention: If there is no standard marking on the chair or it is damaged, this is a reason to refuse the purchase. Such models have not been certified and can be dangerous.

Also prepare the car:

• 🚗 Check availability ISOFIX bracket in the back sofa (they are hidden in the cracks between the back and the seat).
• 🧹 Remove any foreign objects from the rear seat that may interfere with installation.
• 🔌 If the chair is equipped Top Tether (top mounting point), locate the appropriate anchor in the trunk or seat back.

2. Step-by-step installation instructions

Installation Bony Fix depends on the type of fastening. Let's consider both options: using ISOFIX and with the help standard seat belts car.

2.1. Fastening via ISOFIX

System ISOFIX It is considered the most reliable way to fix the chair. Follow the algorithm:

1. Expand ISOFIX connectors on the chair (usually they are hidden under plastic plugs).
2. Align the connectors with the metal brackets in the vehicle. You will hear a characteristic click - this means that the locks have worked.
3. Pull the chair towards you to make sure it is securely fastened. It should not move more than 1–2 cm.
4. If the model is equipped Top Tether, secure the belt to an anchor point (usually the trunk floor or seat back).

For models Bony Fix with retractable leg (support on the floor) instead Top Tether:

• Pull out the support until it touches the floor of the car.
• Adjust the length so that the chair does not rock.

2.2. Fastening with seat belts

If your car does not have ISOFIX, use standard belts. It is important to pass the belt through the guides correctly:

1. Place the chair in the back seat. Make sure the backrest fits snugly against the car seat.
2. Skip diagonal part of the belt through the top eyelet on the chair (usually marked in red or blue).
3. Snap the belt into the buckle and pull to remove the slack.
4. Check that the belt is not twisted or touching any sharp parts of the chair.

⚠️ Attention: If, after fixing, the chair wobbles more than 2–3 cm in any direction - the installation was performed incorrectly. Recheck the belt path and tension.

ISOFIX connectors click into place|

The seat belt is not twisted|

The chair does not move more than 2 cm |

The headrest is adjusted according to the child's height|

There are no foreign objects under the chair -->

3. Adjustment to the height and weight of the child

Armchair Bony Fix designed for children from 9 to 36 kg (groups 1/2/3). To ensure maximum safety, it is necessary to regularly adjust the position of the elements:

3.1. Adjusting the headrest height

The headrest must be level baby's ears. To adjust:

1. Press the button or lever on the back of the chair (usually marked red).
2. Raise or lower the headrest to the desired level.
3. Make sure the shoulder straps fit through the guides strictly above the shoulders.

For children of group 1 (9–18 kg) use five-point internal harness. When the child reaches 15–18 kg, you can switch to standard car belts (group 2/3).

3.2. Backrest position

The backrest angle is adjustable depending on age:

• 👶 For children 9–18 months - position "dream" (the back is tilted to 30–45°).
• 🧒 For children from 2 years — vertical position (15–30° tilt).

To change the angle:

1. Click on the lever under the chair seat.
2. Adjust the backrest to the desired position.
3. Make sure the indicator on the side of the chair shows the green zone (correct angle).

How to understand that a child is ready to move to group 2/3?

The transition to group 2/3 (using standard vehicle belts instead of internal ones) is possible if three conditions are met:

1. The child’s weight exceeds 15 kg (usually after 3–4 years).

2. The child's shoulders are above the top guides for internal belts.

3. The child can sit in a chair at least 30 minutes without trying to free yourself.

If at least one condition is not met, continue to use the five-point harness.

4. Typical errors during operation

Even experienced parents sometimes make mistakes that reduce the effectiveness of protection. Here are the most common:

Error	Consequences	How to avoid
Weak belt tension	In an accident, a child may be thrown out of the seat.	Check the tension: there should not be more than a gap between the belt and the child’s body. 1 cm
Use of winter clothes	Increases belt play, reduces protection	Cover your baby with a blanket after fixation with straps
Incorrect back angle	Risk of neck injury in a frontal impact	Watch the incline indicator (should be in the green zone)
The chair is installed in the front seat	Increased risk of injury from airbags	Place the chair only from behind, except when there is no back seat

Critical error: using the chair after an accident. Even if outwardly Bony Fix looks intact, its structure may have received microdamages. After an accident, the seat must be mandatory replacement, even if the child was not in it.

1. Are the ISOFIX connectors latched (or is the seat belt tightened securely).

2. Are there any foreign objects under the seat (they can move it when braking).

3. Are the belts twisted and are the child’s clothes caught under them?-->

5. Care and storage of the car seat

Service life Bony Fix amounts to 5–6 years from the date of production (see date on the sticker). To make the chair last longer, follow the recommendations:

5.1. Cleaning the covers

Cases for most models Bony Fix removable and washable 30°C in delicate mode. Prohibited:

• 🧼 Use bleach or aggressive detergents.
• 🔥 Dry the covers on a radiator or in direct sunlight.
• 🧵 Wash covers with metal elements (zippers, buttons).

To clean plastic and metal parts, use a damp cloth with soapy water. Do not use abrasives as they may damage the markings.

5.2. Storage

If the chair is temporarily not in use:

• 🏠 Store it in a dry place at room temperature.
• 🔄 Do not place heavy objects on the chair - this may deform the plastic.
• 🌞 Avoid prolonged exposure to the sun (UV rays destroy the material).

⚠️ Attention: If the chair has been exposed to extreme temperatures (for example, in an unheated garage in the winter), leave it on 2–3 hours in a warm room. Plastic can become brittle in the cold.

6. Car compatibility

Armchair Bony Fix Suitable for most modern cars, but there are some nuances:

• 🚗 ISOFIX: Check the distance between the brackets in your car. Standard distance - 28 cm, but in some models (for example, Renault Kaptur until 2020) it may differ.
• 🪑 Seat shape: If the rear sofa has a pronounced slope, use anti-slip mat under the chair.
• 🔌 Top Tether: Not all vehicles are equipped with an anchor for the top mounting point. In this case, choose models Bony Fix with retractable leg.

Before purchasing, check the seat for compatibility with your car. To do this:

1. Visit the official website Bony and take advantage compatibility check service (you need to enter the make and model of your car).
2. Or test the seat directly in the car (many stores allow you to do this before purchasing).

7. Frequently asked questions about Bony Fix

❓ Is it possible to install a chair on the front seat?

Installation on the front seat is permitted only if the rear is missing (for example, in pickup trucks). In this case Be sure to turn off the front airbag (if possible in your car). Also, the chair must be turned around with your back in the direction of travel (for children up to 15 months).

❓ How do you understand that it’s time to change the chair?

Replace Bony Fix, if:

• Service life has expired (5–6 years from the date of production).
• The chair has been in an accident (even if it looks intact).
• The plastic has cracks or deformations.
• The child has exceeded the maximum weight (36 kg).

❓ Is it possible to use the chair without a cover?

No, the case is part of the security system. It secures the child's body and prevents slipping. In addition, without a cover, plastic elements can rub the skin. If the cover is torn, order an original one from the manufacturer.

❓ How to transport a seat on a plane?

Most airlines allow you to take Bony Fix on board as hand luggage, if it is certified according to the standard FAA (check this in the instructions). On an airplane, the seat is installed on the on-board sofa and secured with standard seat belts. Some airlines provide special adapters.

❓ What to do if a child unfastens his seat belts?

If the child is older 3 years trying to free himself:

• Explain the consequences (for example: “If you unbuckle your seat belt, the car will not be able to protect you”).
• Use reminders before the trip (“Let’s check if the belt is fastened well”).
• If the problem persists, consider models with protection against self-opening (for example, Bony Fix SafeLock).