1. はじめに
This manual provides essential instructions for the safe and proper use, installation, and maintenance of your CYBEX Eternis S with SensorSafe convertible car seat. Please read this manual thoroughly before using the car seat and keep it in a safe place for future reference.
The Eternis S is designed to accommodate children from birth up to 120 pounds, offering rear-facing, forward-facing, and belt-positioning booster modes.
2. 安全機能
The CYBEX Eternis S incorporates advanced safety technologies to protect your child.
2.1 センサーセーフテクノロジー
The integrated SensorSafe chest clip connects to a smartphone app, providing critical alerts for various unsafe situations. These alerts include:
- Child becoming unbuckled during transit.
- Rear seat temperature becoming too warm or too cold.
- Child accidentally left in the vehicle.
- Child seated in the car seat for an extended period.

Image: The SensorSafe chest clip, designed to provide safety alerts.
ビデオ: 終了view of the Eternis S with SensorSafe features and benefits.
2.2 Linear Side Impact Protection (L.S.P.)
The Linear Side Impact Protection (L.S.P.) system is designed to absorb up to 25% more impact forces in certain side-impact collisions compared to the same car seat without the L.S.P. extended. Ensure the L.S.P. is properly extended on the side closest to the vehicle door.

Image: The L.S.P. system extended from the side of the car seat.
2.3 特許取得済みのリクライニングヘッドレスト
The Eternis S features a patented reclining headrest that helps prevent your child's head from falling forward while asleep, maintaining an ergonomically correct and safe position for the head and neck. The headrest offers 12 height settings for easy adjustment as your child grows.

Image: The adjustable headrest of the car seat.
3. セットアップとインストール
The CYBEX Eternis S offers three modes of use: Rear-Facing, Forward-Facing, and Belt-Positioning Booster. Always refer to your vehicle's owner's manual for specific car seat installation instructions and locations.

Image: The three modes of the Eternis S car seat: Rear-Facing (4-50 lbs), Forward-Facing (22-65 lbs), and Belt-Positioning Booster (40-120 lbs).
3.1 背面取り付け(4~50ポンド)
For infants and toddlers weighing between 4 and 50 pounds, the car seat must be installed in the rear-facing position.
- Ensure the car seat is reclined to the appropriate rear-facing angle, indicated by the level indicator on the side of the seat.
- 車の後部座席にチャイルドシートを設置します。
- Secure the car seat using either the vehicle's seat belt or the lower anchors (LATCH system).
- チャイルドシートがしっかりと固定されており、ベルトの経路で左右または前後に 1 インチ以上動かないことを確認します。

Image: A child in the rear-facing car seat.

Image: Illustration of increased rear-facing legroom provided by the car seat's design.
3.1.1 Rear-Facing Installation with Vehicle Seat Belt
Video: Detailed instructions for installing the Eternis S in a rear-facing position using the vehicle's seat belt.
3.1.2 Rear-Facing Installation with Lower Anchors (LATCH)
Video: Detailed instructions for installing the Eternis S in a rear-facing position using the vehicle's lower anchors (LATCH system).
3.2 前向き設置(22~65ポンド)
For children weighing between 22 and 65 pounds, the car seat can be installed in the forward-facing position.
- Ensure the car seat is in the upright forward-facing position.
- 車の後部座席にチャイルドシートを設置します。
- Secure the car seat using either the vehicle's seat belt and top tether, or the lower anchors (LATCH system) and top tether. The top tether must always be used in forward-facing mode.
- チャイルドシートがしっかりと固定されており、ベルトの経路で左右または前後に 1 インチ以上動かないことを確認します。

Image: A child in the forward-facing car seat.
3.2.1 Forward-Facing Installation with Lower Anchors & Tether
Video: Detailed instructions for installing the Eternis S in a forward-facing position using the vehicle's lower anchors and top tether.
3.2.2 Forward-Facing Installation with Vehicle Seat Belt & Tether
Video: Detailed instructions for installing the Eternis S in a forward-facing position using the vehicle's seat belt and top tether.
3.3 Belt-Positioning Booster Mode (40-120 lbs)
For older children weighing between 40 and 120 pounds, the car seat converts into a high-back belt-positioning booster.
- Remove the internal harness system as per the instructions in the car seat manual.
- Position the booster seat in the vehicle's back seat.
- Secure the child using the vehicle's lap and shoulder belt, ensuring the shoulder belt is positioned correctly across the child's shoulder and chest, and the lap belt is low across the hips.

Image: A child in the belt-positioning booster seat.
4. 操作手順
4.1 ハーネスの調整
The car seat features a 3-point harness system with 12 height positions for the headrest and harness. Adjust the headrest and harness height so that the shoulder straps are at or just below your child's shoulders for rear-facing, and at or just above your child's shoulders for forward-facing.

Image: The car seat's harness and headrest system.
4.2 リクライニングポジション
The Eternis S offers multiple recline positions. For rear-facing, ensure the recline angle is appropriate for your child's age and weight, as indicated by the level indicator. For forward-facing, select an upright position. The in-seat recline feature provides extra legroom for rear-facing children.

Image: The car seat's recline function.
4.3 Harness Holders
The car seat includes magnetic harness holders to keep the straps out of the way when placing your child in or taking them out of the seat.

Image: Magnetic harness holder for convenience.
4.4カップホルダー
An attachable cup holder is provided for convenience. Ensure it is securely attached before use.

Image: Car seat with an attached cup holder.
5. メンテナンス
定期的な清掃とメンテナンスにより、車のシートの寿命と安全性が確保されます。
- 布製カバー: The fabric covers are designed for easy removal and cleaning. Refer to the care label on the fabric for specific washing instructions. Typically, machine wash cold on a delicate cycle and air dry.
- ハーネスストラップ: ハーネスストラップを拭くamp 布地。ハーネスストラップを洗濯機で洗ったり、水に浸したりしないでください。 webビンビン。
- プラスチックおよび金属部品: プラスチックと金属部品を広告で拭きますamp 布と中性洗剤を使用してください。研磨剤入りの洗剤や溶剤は使用しないでください。
- バックル: Periodically check the buckle for debris. Clean with a damp 必要に応じて布で覆います。
6。 トラブルシューティング
If you encounter issues with your CYBEX Eternis S car seat, refer to the following common solutions.
- SensorSafe App Not Connecting/Alerts: Ensure your smartphone's Bluetooth is enabled and the SensorSafe app is updated to the latest version. Check the SensorSafe chest clip for any obstructions or damage. Refer to the SensorSafe user guide for detailed pairing and troubleshooting.
- Harness Straps Sticking/Not Adjusting: ハーネスにねじれや障害物がないか確認する webbing behind the car seat shell. Ensure the harness adjuster button is fully pressed when attempting to loosen or tighten the straps. Do not force the straps.
- 取り付け後に車のシートが緩いように感じる: Re-read the installation instructions carefully for your chosen mode (rear-facing, forward-facing). Ensure the vehicle's seat belt or LATCH connectors are routed correctly and tightened as much as possible. Apply pressure to the car seat while tightening to remove slack. The car seat should not move more than one inch at the belt path.
7. 仕様
| 特徴 | 詳細 |
|---|---|
| モデル番号 | 518002881 |
| 最大重量の推奨 | 120ポンド |
| 最小重量の推奨 | 4ポンド |
| 後ろ向き最大重量 | 50ポンド |
| Forward Facing Maximum Weight | 120ポンド |
| 後ろ向き最小重量 | 4ポンド |
| Forward Facing Minimum Weight | 22ポンド |
| Maximum Height Recommended | 57インチ |
| インストールタイプ | ラッチ、シートベルト |
| ハーネスタイプ | 3ポイント |
| 高さ位置の数 | 12 |
| アイテム重量 | 26ポンド |
| 材質タイプ | 合金鋼 |
| 色 | Lavastone Black |
8. 保証情報
For detailed warranty information regarding your CYBEX Eternis S car seat, please refer to the warranty card included with your product packaging or visit the official Cybex webサイトをご覧ください。保証条件は地域によって異なる場合があります。
9. カスタマーサポート
If you require further assistance, have questions about installation, or need to report an issue, please contact Cybex customer support.
- 正式 Webサイト: AmazonのCybexストアをご覧ください (for product information and resources)
- Refer to the contact information provided in your product's physical manual for direct customer service channels.