3 seats across in Sienna 3rd row



To whom it may concern,

I am trying to figure out a way to avoid buying a new vehicle and need a way to safely install 3 booster car seats across the 3rd row in a Toyota Sienna 2014. This proves difficult as there is only one tether anchor in the center. Is there a way to retrofit two additional anchors for the outer positions? I know the Clek Fllo and Diono will fit but I am concerned that they will not be installed as safely without the tethers. Are there any other ideas besides a new vehicle?


CPST and ketchup snob
Staff member
No, you can't add tether anchors there.

I assume by "booster" you mean combination seats in harness mode- a belt positioning booster doesn't need a tether.

Can you tell us who is in the vehicle? Ages, sizes, weights, what seat they're in now?

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