Using the securing systems for child restraint systems
Only secure children using a child restraint system which is suitable and recommended for Mercedes-Benz vehicles, as well as appropriate to the height, age and weight of the child.
Always install a child restraint system on a rear seat if possible.
Only use the seat belt system, the ISOFIX/i-Size mounting bracket or the Top Tether anchorages as securing systems for child restraint systems.
Vehicles with a reclining rear seat: Before an ISOFIX or i-Size child restraint system is installed, adjust the reclining rear seat backrest back slightly.
Remove upholstered lining 
.
. Vehicles without a reclining rear seat: Fold upholstered lining upwards.
upwards. Turn the support on the rear side of upholstered lining by 90°.
by 90°. Upholstered lining remains folded upwards.
Attach the ISOFIX child restraint system to both ISOFIX mounting brackets 
or i‑Size mounting brackets .
or i‑Size mounting brackets . or
Attach the i‑Size child restraint system to both i‑Size mounting brackets .
. Vehicles with a reclining rear seat: Return the reclining rear seat backrest to an upright position.
The reclining rear seat backrest must rest against the child restraint system.
The risk of injury can be reduced by Top Tether as Top Tether provides an additional connection between the child restraint system secured with ISOFIX and the vehicle.
If necessary, move head restraint upwards.
upwards. Fold up cover of Top Tether anchorage 
.
of Top Tether anchorage . Fit the ISOFIX or i-Size child restraint system with Top Tether. Always comply with the child restraint system manufacturer's installation instructions when doing so.
Route Top Tether belt 
under head restraint between the two head restraint bars.
under head restraint between the two head restraint bars. Hook Top Tether hook 
of Top Tether belt without twisting into Top Tether anchorage .
of Top Tether belt without twisting into Top Tether anchorage . Tension Top Tether belt . Always comply with the child restraint system manufacturer's installation instructions when doing so.
. Always comply with the child restraint system manufacturer's installation instructions when doing so. Fold down cover of Top Tether anchorage .
of Top Tether anchorage . If necessary, slide head restraint downwards More. Make sure that you do not interfere with the correct routing of Top Tether belt .
downwards More. Make sure that you do not interfere with the correct routing of Top Tether belt . You can find additional important information on the safe transportation of children here:
Automatic front passenger airbag shutoff
Correct use of the seat belt More
Seats suitable for attaching belt-secured child restraint systems
Seats suitable for attaching ISOFIX restraint systems
Seats suitable for attaching i‑Size child restraint systems
Child safety locks for the rear doors More
Child safety locks for the rear side windows More