Installing the Chicco KeyFit 35 infant car seat involves two main components: the car seat base and the infant carrier itself. The base is installed in your vehicle using either the LATCH system or the vehicle's seat belt, and then the infant carrier clicks securely into the base. Proper installation is crucial for your baby's safety.
1. Preparation Before Installation
Before you begin, ensure you have the necessary information and a clear understanding of the process:
- Read Your Manuals: Always consult both your Chicco KeyFit 35 owner's manual and your vehicle's owner's manual. They provide specific instructions for your car seat model and car, including approved seating positions for car seat installation.
- Choose the Right Spot: Infant car seats are safest when installed in the back seat. Consult your vehicle's manual for specific instructions on LATCH anchor locations and approved seating positions.
- Adjust the Recline: The KeyFit 35 base features a ReclineSure® leveling foot. Adjust it to achieve the correct recline angle, indicated by the RideRight® bubble level indicators, ensuring your baby is at a safe angle.
2. Installing the KeyFit 35 Base
The KeyFit 35 base can be installed using two methods: LATCH (Lower Anchors and Tethers for Children) or your vehicle's seat belt. Never use both methods simultaneously unless explicitly allowed by the car seat manual.
A. LATCH Installation (Lower Anchors)
The LATCH system is often the easiest way to achieve a secure installation in vehicles equipped with LATCH anchors.
- Locate LATCH Anchors: Find the lower anchor bars in your vehicle's back seat. These are typically located in the seat bight (the crease between the seat back and bottom) and may be marked with small buttons or labels.
- Extend LATCH Connectors: Pull out the LATCH connectors from the KeyFit 35 base.
- Attach LATCH Connectors: Attach both LATCH connectors to the vehicle LATCH anchor bars. Make sure you hear a distinct "click" as each connector engages, confirming they are securely attached.
- Remove Slack and Tighten: Press the KeyFit 35 base firmly down into the vehicle seat. While maintaining this downward pressure, pull up on the LATCH straps to remove all slack and tighten the base. Ensure the base is snug against the vehicle seat.
- Check for Tightness: Perform the "1-inch rule" test. Grasp the car seat base at the belt path (where the LATCH strap passes through) and try to move it side-to-side and front-to-back. It should not move more than one inch in any direction.
B. Vehicle Seat Belt Installation
If your vehicle doesn't have LATCH anchors in the desired seating position, or if your child's weight exceeds the LATCH system's limits (check your manuals), you'll use the vehicle's seat belt.
- Route the Seat Belt: Open the orange lock-offs on the KeyFit 35 base. Route the vehicle's lap and shoulder belt through the designated belt path on the base.
- Buckle the Seat Belt: Buckle the seat belt securely.
- Lock the Seat Belt:
- Automatic Locking Retractor (ALR): Most newer vehicles have ALRs. Pull the shoulder belt all the way out until you hear a click, then let it retract to engage the locking mechanism. The belt will now only pull in, not out.
- Switchable Retractor: Some older vehicles may require you to switch the retractor.
- Locking Clip: If your vehicle's seat belt doesn't lock automatically, you may need to use a metal locking clip (if provided with the car seat) to secure the belt.
- Remove Slack and Tighten: Press the KeyFit 35 base firmly down into the vehicle seat. While maintaining this downward pressure, pull up on the shoulder belt to remove all slack and tighten the base. Close the orange lock-offs securely over the seat belt.
- Check for Tightness: Grasp the car seat base at the belt path and try to move it side-to-side and front-to-back. It should not move more than one inch in any direction.
3. Installing the Infant Carrier onto the Base
Once the KeyFit 35 base is securely installed, attaching the infant carrier is simple:
- Position the Carrier: Align the infant carrier with the base.
- Click into Place: Gently lower the carrier onto the base until you hear a distinct "click," indicating it is locked securely into position.
- Confirm Connection: Always give the carrier a gentle tug upward to ensure it is firmly attached to the base.
4. Key Safety Checks
Regularly check these aspects for continued safety:
- 1-Inch Rule: The base should not move more than one inch side-to-side or front-to-back at the belt path.
- Harness Fit: The harness straps should be snug against your baby's body, and you should not be able to pinch any excess webbing at the shoulder.
- Harness Height: For rear-facing infants, the harness straps must be at or below your baby's shoulders.
- Chest Clip: Position the chest clip at armpit level.
- Recline Angle: Ensure the bubble level indicator on the base shows the correct recline for your infant's weight.
5. Tips for Success
- Patience is Key: Don't rush the installation process. Take your time to ensure every step is done correctly.
- Use Your Knee/Weight: When tightening the LATCH straps or seat belt, use your knee or body weight to press down firmly on the car seat base. This helps compress the vehicle seat cushion and achieve a tighter fit.
- Seek Help: If you're unsure about your installation, don't hesitate to seek assistance from a certified Child Passenger Safety (CPS) Technician. You can find one near you through resources like the National Highway Traffic Safety Administration (NHTSA) or Safe Kids Worldwide.
For detailed video guides and additional support, you can often find resources on the Chicco website or their official YouTube channel.
