belt MERCEDES-BENZ R500 2007 R171 Owner's Guide

135 Controls in detail
Seats
Returning second-row seats to their
original position
Seat unlocked
1Lock status indicator
2Red marking
When the seat is unlocked

lock status indicator 1 is extended

red marking 2 is clearly visible
When the seat is unlocked, push seat
backrest back until the seat audibly en-
gages.
Seat locked
1Lock status indicator
2Red marking
When the seat is locked

lock status indicator 1 is in hinged po-
sition

red marking 2 is barely visible
WarningG
When occupants have entered or exited the
vehicle using the easy-entry/exit feature,
before driving off make sure

the seats are properly locked

the seat backrests are in an upright po-
sition and are properly locked
A second-row seat is properly locked only
when lock status indicator 1 is in hinged
position and red marking 2 is barely visi-
ble.
If a seat and seat backrest are not properly
locked, the seat could move forward and the
seat backrest could fold. You could slide un-
der the seat belt during braking, vehicle ma-
neuvers, or in an accident. If you slide under
it, the belt would apply force at the abdomen
or neck. That could cause serious or even fa-
tal injuries.

137 Controls in detail
Seats
Front seat active head restraints
You cannot remove the active head
restraints on the driver’s and front passen-
ger’s seat.
For removal of the active head restraints
we recommend that you contact an
authorized Mercedes-Benz Light Truck
Center.
For information on head restraint adjust-
ment, see “Seats” (
page 43).
For information on active head restraints,
see “Active head restraints” (
page 83).
Rear seats Rear seat adjustment
Warning!G
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint so that it is close
to the head as possible and the center of the
head restraint supports the back of the head
at eye level. This will reduce the potential for
injury to the head and neck in the event of
an accident or similar situation.
Warning!G
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing position. Thus, we strongly recommend
that children be placed in the rear seats. Re-
gardless of seating position, children 12
years old and under must be seated and
properly secured in an appropriate infant or
toddler restraint, or booster seat recom-
mended for the size and weight of the child.
For additional information, see “Children in
the vehicle” (
page 84).
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and
the child is not properly secured in the child
restraint.
Warning!G
Never ride in a moving vehicle with the seat
backrest in an excessively reclined position
as this can be dangerous. You could slide
under the seat belt in a collision. If you slide
under it, the belt would apply force at the ab-
domen or neck. That could cause serious or
fatal injuries. The seat backrest and seat
belts provide the best restraint when the
wearer is in a nearly upright position and
belts are properly positioned on the body.
Your seat must be adjusted so that you can
correctly fasten your seat belt (
page 51).
Never place hands under the seat or near
any moving parts while a seat is being ad-
justed.


138 Controls in detail
Seats
Fore and aft adjustment
(second-row seats only)
The handles for adjusting the seats are
located on the front of each seat base.
1Adjustment handle
Pull up handle 1 in direction of arrow
and hold it there.
Move seat to the desired position.
Release handle 1.
The seat must audibly engage.Seat backrest tilt (second-row seats)
The handles for adjusting the seats are
located on the rear of each seat base.
1Adjustment handle
While seated, pull handle 1 in direc-
tion of arrow to resistance point and
hold it there.
After adjusting rear seats, make sure

the seats are properly locked

the seat backrests are in an upright po-
sition and are properly locked
A second-row seat is properly locked only
when lock status indicator 1 is in hinged
position and red marking 2 is barely visible
(
page 135).
If a seat and seat backrest are not properly
locked, the seat could move forward and the
seat backrest could fold. You could slide un-
der the seat belt during braking, vehicle ma-
neuvers, or in an accident. If you slide under
it, the belt would apply force at the abdomen
or neck. That could cause serious or even
fatal injuries.


144 Controls in detail
Memory function*
Prior to operating the vehicle, the driver
should check and adjust the seat height,
seat position fore and aft, and seat back-
rest angle if necessary, to ensure adequate
control, reach and comfort. The head
restraint should also be adjusted for
proper height. See also the section on air
bags (
page 74) for proper seat position-
ing.
In addition, adjust the steering wheel to
ensure adequate control, reach, operation
and comfort. Both the interior and exterior
rear view mirrors should be adjusted for
adequate rear vision.
Fasten seat belts. Infants and small chil-
dren should be seated in a properly
secured restraint system that complies
with U.S. Federal Motor Vehicle Safety
Standard 213 and 225 and Canadian
Motor Vehicle Safety Standards 213
and 210.2.With the memory function you can store up
to three different settings for each front
seat.
The following settings are saved for each
stored position on the entry side of the
driver’s seat:
Driver’s seat, head restraint height and
backrest position

Steering wheel position

Driver’s side exterior rear view mirror
position

Passenger-side exterior rear view
mirror positionThe following settings are saved for each
stored position on the entry side of the
front passenger seat:

Front passenger seat, head restraint
height and backrest position
Warning!G
Do not activate the memory function while
driving. Activating the memory function
while driving could cause the driver to lose
control of the vehicle.

258 Controls in detail
Power tilt/sliding sunroof*
Opening and closing
Warning!G
When closing the tilt/sliding sunroof, make
sure that there is no danger of anyone being
harmed by the closing procedure.
If the tilt/sliding sunroof encounters an
obstruction that blocks its path in a circum-
stance where you are closing the tilt/sliding
sunroof by moving the tilt/sliding sunroof
switch past the resistance point, or by
pressing and holding button‹on the
SmartKey, by pressing and holding the lock
button (vehicles with KEYLESS-GO*) on the
door handle, the automatic reversal function
will not operate.
The opening/closing procedure of the
tilt/sliding sunroof can be immediately
halted by releasing the switch or, if the
switch was moved past the resistance point
and released, by moving the switch in any
direction.
The tilt/sliding sunroof is made out of glass.
In the event of an accident, the glass may
shatter. This may result in an opening in the
roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening also presents a potential for injury
for occupants wearing their seat belts prop-
erly as entire body parts or portions of them
may protrude from the passenger compart-
ment.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock your vehicle. Do not leave children
unattended in the vehicle, or with access to
an unlocked vehicle. Unsupervised use of
vehicle equipment can cause an accident
and/or serious personal injury.!To avoid damaging the seals, do not trans-
port any objects with sharp edges which can
stick out of the tilt/sliding sunroof.
Do not open the tilt/sliding sunroof if there is
snow or ice on the roof, as this could result in
malfunctions.
The tilt/sliding sunroof can be opened or closed
manually should an electrical malfunction occur
(
page 481).
iWhen the tilt/sliding sunroof is open,
resonance noises may result in addition to the
usual wind noises. They are caused by minimal
pressure changes in the passenger compart-
ment. To reduce or eliminate theses noises,
change the position of the tilt/sliding sunroof or
open a door window slightly.
iYou can also open or close the tilt/sliding
sunroof using the SmartKey or the
KEYLESS-GO* function, see “Summer opening
feature” (
page 254) and “Convenience clos-
ing feature” (
page 256). Depending on the
current position, the tilt/sliding sunroofs may
also open or close when the air recirculation
button: on the control panel of the climate
control (
page 220) or automatic climate
control (
page 234) is pressed and held.

262 Controls in detail
Panorama roof with power tilt/sliding panel*
Opening and closing the panorama roof
with power tilt/sliding panel
Switch on the ignition (page 39).
The tilt/sliding panel is opened and closed
electrically. The switch for the tilt/sliding
panel is on the overhead control panel.
The tilt/sliding panel only operates with
the roller sunblinds opened.
Warning!G
When opening or closing the tilt/sliding
panel, make sure that there is no danger of
anyone being harmed by the opening or
closing procedure.
The opening procedure of the tilt/sliding
panel can be immediately halted by releas-
ing the switch or, if the switch was moved
past the resistance point and released, by
moving the switch in any direction.
The closing procedure of the tilt/sliding
panel can be immediately halted by releas-
ing the switch.
The panorama roof with power tilt/sliding
panel is made out of glass. In the event of
an accident, the glass may shatter. This may
result in an opening in the roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening also presents a potential for injury
for occupants wearing their seat belts
properly as entire body parts or portions of
them may protrude from the passenger
compartment.
When leaving the vehicle, always remove the
SmartKey or the SmartKey with
KEYLESS-GO* from the starter switch, take
it with you, and lock the vehicle. Do not
leave children unattended in the vehicle, or
with access to an unlocked vehicle.
Unsupervised use of vehicle equipment can
cause an accident and/or serious personal
injury.
!To avoid damaging the seals, do not trans-
port any objects with sharp edges which can
stick out of the tilt/sliding panel.
Do not open the tilt/sliding panel if there is
snow or ice on the roof, as this could result in
malfunctions.
iWhen the tilt/sliding panel is open,
resonance noises may result in addition to the
usual wind noises. They are caused by minimal
pressure changes in the passenger compart-
ment. To reduce or eliminate theses noises,
change the position of the tilt/sliding panel or
open a door window slightly.
iYou can also open or close the tilt/sliding
panel using the SmartKey or the KEYLESS-GO*
function, see “Summer opening feature”
(
page 254) and “Convenience closing
feature” (
page 256).
iThe tilt/sliding panel may also open when
using the air recirculation button:on the
control panel of the climate control
(
page 220) or automatic climate control
(
page 234).

301 Controls in detail
Loading
Expanding cargo compartment
You can separately fold each seat of the
rear passenger compartment to expand
the cargo compartment.
Expanding cargo compartment in part
Folding third-row seats
Completely lower the head restraints of
the third-row seats.1Seat belt holder
2Release handle
3Seat backrest
Place seat belt in seat belt holder 1.
Pull release handle 2 on seat
backrest3 in direction of arrow.
Seat backrest 3 is released.
Warning!G
When expanding the cargo compartment,
always fully fold the corresponding seats
and, if so equipped, always use the partition
net* (
page 308) when transporting cargo.
Unless you are transporting cargo, the seat
backrests must remain properly locked in
the upright position.
In an accident, during hard braking or
sudden maneuvers, loose items will be
thrown around inside the vehicle, and can
cause injury to vehicle occupants unless the
items are securely fastened in the vehicle.
Always use the cargo tie down rings
(
page 299).
Warning!G
Never drive vehicle with the tailgate open.
Deadly carbon monoxide (CO) gases may
enter vehicle interior resulting in uncon-
sciousness and death.
!When the second-row seats are folded
forward, the front seats may not be moved to the
rearmost position. Otherwise you could damage
the front and second-row seats.
iThe third-row head restraints are adjusted in
the same manner as the head restraints of the
second-row seats (
page 139).


302 Controls in detail
Loading
3Seat backrest
4Seat cushion
5Strap
Move seat backrest 3 slightly for-
ward.
Seat cushion 4 is released and folds
forward automatically.
Fold seat backrest 3 to a horizontal
position.Expanding cargo compartment fully
iStrap 5 serves to pull up the seat backrest
when bringing the third-row seats back to their
original position (
page 304).
WarningG
Folded second-row seats are intended to
serve as cargo compartment expansion in
conjunction with folded third-row seats
only. Do not fold the second-row seats and
allow third-row seat occupants to use folded
second-row seats as a footrest while driving.
Third-row seat occupants must, like all vehi-
cle occupants, keep both feet on the floor in
front of their seat. Otherwise, occupants
could slide under the seat belt in a collision.
If occupants slide under it, the belt would
apply force at the abdomen or neck. That
could cause serious or even fatal injuries.
Do not fold the second-row seats and allow
third-row seat occupants to use folded
second-row seats as a table while driving.
Objects placed on folded second-row seats
may come loose during braking, vehicle ma-
neuvers, or an accident and be thrown
around in the vehicle interior. Objects
thrown around in the vehicle interior may
cause an accident and/or serious personal
injury.
iWhen folding both rows of seats, it is impor-
tant that you fold the second-row seats first, and
then fold the third-row seats.


304 Controls in detail
Loading
Folding third-row seats
Completely lower the head restraints of
the third-row seats.
1Seat belt holder
2Release handle
3Seat backrest
Place seat belt in seat belt holder 1.
Pull release handle 2 on seat
backrest3 in direction of arrow.
Seat backrest 3 is released.
Slowly move seat backrest 3 forward.
Seat cushion 7 is released and folds
forward automatically.
3Seat backrest (third-row seat)
4Recess (on second-row seat backrest)
5Guide pin (on third-row seat cushion)
6Seat backrest (second-row seat)
7Seat cushion (third-row seat)
8Strap
Fold seat cushion 7 to a horizontal
position.
Guide pin 5 must engage in recess 4
of seat backrest 6.
Fold seat backrest 3 to a horizontal
position.
Returning seats to their original position
Carry out the steps described on
(
page 301) to (page 304) in
reverse order.
Make sure all seats are properly locked
in position.
iThe third-row head restraints are adjusted in
the same manner as the head restraints of the
second-row seats (
page 139).
iStrap 8 serves to pull up the seat backrest
when bringing the third-row seats back to their
original position (
page 304).
iThe second-row seats must be in their
rearmost position (
page 138).

305 Controls in detail
Loading
Second-row seat unlocked
1Lock status indicator
2Red marking
When the seat is unlocked

lock status indicator 1 is extended

red marking 2 is clearly visible
When the seat is unlocked, push seat
backrest back until the seat audibly
engages.
Second-row seat locked
1Lock status indicator
2Red marking
When the seat is locked

lock status indicator 1 is in hinged
position

red marking 2 is barely visible
Warning!G
Make sure

the seats are properly locked

the seat backrests are in an upright po-
sition and are properly locked
A second-row seat is properly locked only
when lock status indicator 1 is in hinged
position and red marking 2 is barely
visible.
If a seat and seat backrest are not properly
locked, the seat could move forward and the
seat backrest could fold. You could slide un-
der the seat belt during braking, vehicle ma-
neuvers, or in an accident. If you slide under
it, the belt would apply force at the abdomen
or neck. That could cause serious or even fa-
tal injuries.