Do I have to use the belt tensioner when I install the Liing base with the vehicle belt? 13 September 2022 21:20 Updated Yes, the Belt Tensioner is required to be used for all vehicle belt installations of the Liing base. Related articles Can I install Liing's base using the vehicle belt if it features a thicker loop of webbing or a plastic button? How much of the Liing base needs to be supported by the vehicle seat? Is the load leg required for installation? Download Owner's Manuals for Liing Video Manual - Installing Liing Car Seat Base Comments 0 comments Article is closed for comments.