2009 Mercedes S-Class Owner's Manual - Page 68

Safety and security Occupant safety Once hook 2 is attached, the child restraint itself can be secured. X X Install the child restraint system and tighten the top tether strap according to the child restraint manufacturer's instructions. After removing the child restraint system and the top tether strap. X Release the respective rear seat backrest (Y page 205). X Fold the rear seat backrest slightly forward. X Remove anchorage ring cover 1 from the anchorage ring of the seat on which a child seat is to be installed. X Store anchorage ring cover 1 in a convenient place (e.g. glove box). X Securely fasten hook 2, which is part of the top tether strap, to anchorage ring 3. X For safety, make sure hook 2 is attached to anchorage ring 3 beyond the safety catch, as illustrated. Reinstall anchorage ring cover 1. Sedan: Foldable rear seat backrest G Warning! Always lock the seat backrest in its upright position when the rear seat bench is occupied by passengers, after installing top tether straps, or the extended cargo compartment is not in use. Make sure that seat backrest is secured properly by pushing and pulling on the seat backrest. If the seat backrest is not locked properly, the seat backrest could fold. The child seat would no longer be supported properly or positioned to provide its intended benefit. That could cause serious or even fatal injuries. 2 Hook 3 Anchorage ring 2 Hook 3 Anchorage ring X X Guide the top tether strap between the head restraint and top of the seat back. The head restraint must be installed and positioned such that the top tether strap can pass freely between the head restraint and the top of the seat back. X Make sure the tether strap is not twisted. Swing the rear seat backrest to the rear until it engages. X Check the rear seat backrest to be locked in its upright position (Y page 316). Once hook 2 is attached, the child restraint itself can be secured. X Install the child restraint system and tighten the top tether strap according to 66