When I corner the children's seats are tilting and moving about too much in the back. If I pull on the belt it stops as it should but surely the seats shouldn't move this much? not ever had this in another car. Any ideas?
In addition to mackem's points, there is also the anchor point for the top of the child's seats. When locked into the ISO mountings and with the top strap fixed in place, my grandkids seats are rock solid.
There is a bracket directly behind each seat, set below the upperlevel of the floor platform. The floor platform has small cut-outs at each sideof the front edgeunder the 'cloth' covering allowing the strap to pass through. The manual describes these as the correct place to connect upper child seat straps when used with an Isofix seat.
It is better to remove the platform and set everything up, and thenreplace it during the journey(s). It is the 'tonneau' for the boot area that I cannot remember about. It may have to be removed but I honestly can't bring to mind.
Considering how tall some seats are nowadays and how high the child sits, it seems a sensible thing to use the top strap as the torque moment around the ISO-fixings must be considerable in rapid deceleration.
I don't know if all child seats have the capability to utilise a top strap, but the ones bought by my offspring for the grandkids all have the facility. The strap is detachable and clips on at top rear of the seat, and at the bottom brackets I described. As you say, the Lap & Diagonal also goes around the seat forming the actual child restraint and holding the seat in place.However (not actually knowing), I assume that seats are available somewhere with the restraint straps built into the seat, or some other combination of construction which means that it is advisable to have the extra security of the top strap. In my case no effort is too much for the safety of the grandkids, so Iso, L&D and top strap all get put on when the seats are transferred into the B-Max.
In my motor , there is a diagram on the back of the rear seats just above the bottom bracketsshowing how to use them.
The seats in question have a bracket at the back of the top. The (extra) top strap, fixes there. The strap goes vertically down and fixes on the bracket I have described (which would double as a fixing for a luggage net) down in the lower area of the load compartment.
As I said there is a diagram on the back of the rear seats at the two positions equivalent to where the isofix brackets are located in the rear seats.
I assume it is not too new an idea, as the comment about them is in the manual (pg 16 - I was one of the lucky ones and had a paper copy with the car
). It also shows where the diagram is - if you have very good eyes and imagination.