What is the correct installation of the support leg?
It is important to check that the support leg is at an angle around 10° degrees from the back of the seat. You could check this by ensuring that the support leg is further away from the seat than the vertical line. Before installing the support leg you need to make sure that there is no storage compartment underneath the car floor. If this is the case, the lid needs to be removed and the support leg installed in that space and not on top of the storage compartment.