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When I install my rear facing car seat, the back of the car seat moves up and down. Is it installed incorrectly?


Not necessarily.  Some movement in the head area of rear-facing car seats is common, even when car seats are properly installed. Follow the installation instructions for your specific car seat, and then test for tightness.


Tips for testing installation tightness properly:

  • With weakest hand at belt path, push and pull the car seat from side to side. Some movement from side-to-side (up to 1”) is acceptable. The vehicle belt or LATCH belt used to secure the car seat should not loosen during this test.
  • Do not test at the back or head of the car seat, only as indicated above and in the images below


When testing infant car seats:



When testing rear facing convertibles:






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