Page 58 of 399
55 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Manual seat
To remove: 
Pull head restraint to its highest position. Push 
button (1) and pull out head restraint completely. 
To install: 
Insert head restraint and push it down to the stop. Push 
button (1) and adjust head restraint to the desired 
position.
Wa r n i n g !
For your protection, drive only with properly 
positioned head restraints.Adjust head restraint to support the back of the 
head approximately at ear level.Do not drive the vehicle without the seat head 
restraints. Head restraints are intended to help 
reduce injuries during an accident. 
     
        
        Page 59 of 399
56 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Front seat backrest - locking and unlocking
1Release lever
Folding forward: 
Lift release lever (1) and fold backrest forward, when 
necessary, lower head restraint by pushing it. 
Note:
Vehicles with power seat: 
The seat will automatically slide forward and the head 
restraints will move down.Folding back: 
Fold backrest back until it locks securely in place. 
Adjust head restraint to support the back of the head 
approximately at ear level, see page 52.
Note:
Vehicles with power seat:
The seat and head restraint return to their previous 
positions. 
     
        
        Page 60 of 399
57 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Wa r n i n g !
When leaving the vehicle always remove the 
electronic key from the steering lock, and lock your 
vehicle.The power seats can also be operated with the 
driver’s or passenger door open. Do not leave 
children unattended in the vehicle or with access 
to an unlocked vehicle. Unsupervised use of vehicle 
equipment may cause serious personal injury.Never place hands under seat or near any moving 
parts during a seat adjustment procedure.
Wa r n i n g !
When raising backrest, observe that backrest is not 
pushed against an occupant or object.Vehicles with manual seat:
After folding backrest up, adjust head restraint to 
support the back of the head approximately at ear 
level. 
     
        
        Page 61 of 399
58 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Heated seats (optional)
The front seat heaters can be switched on with the 
electronic key in starter switch position 1 or 2.
The switch is located in the center console.Press switch to turn on seat heater:
1Normal seat heating mode. One indicator lamp in 
the switch lights up.
2Rapid seat heating mode. Both indicator lamps in 
the switch light up. After approximately 5 minutes 
in the rapid seat heating mode, the seat heater 
automatically switches to normal operation and only 
one indicator lamp will stay on.
Turning off seat heater:
If one indicator lamp is on, press upper half of switch.
If both indicator lamps are on, press lower half of 
switch.
If left on, the seat heater automatically turns off after 
approximately 30 minutes of operation.
P54.25-2501-26 
     
        
        Page 62 of 399
59 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Note:
When in operation, the seat heater consumes a large 
amount of electrical power. It is not advisable to use the 
seat heater longer than necessary.
The seat heaters may automatically switch off if too 
many power consumers are switched on at the same 
time, or if the battery charge is low. When this occurs, 
the indicator lamp in the switch will blink (both 
indicator lamps blink during rapid seat heating mode). 
The seat heaters will switch on again automatically as 
soon as sufficient voltage is available.
If the blinking of the indicator lamps is distracting to 
you, the seat heaters can be switched off. 
     
        
        Page 63 of 399
60 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Rear seat head restraints
Folding head restraints back in the rear passenger 
compartment:
Push lock button (1). The head restraints will fold 
backward.Place head restraints upright
Placing head restraints upright:
Pull the head restraint forward until it locks into 
position.
Angle of head restraints:
Two different head restraint angle positions are 
ava i l ab le .
P91.16-2104-26
P91.16-2105-26 
     
        
        Page 64 of 399
61 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Head restraint height
Raising:
Pull up on head restraint.
If the head restraint is fully lowered, press button (2) to 
pull up.
Lowering:
Push button (2) and push down on head restraint.Adjust head restraint to support the back of the head 
approximately at ear level. The head restraint 
inclination can also be adjusted manually.
Important!
For safety reasons, always drive with the rear head 
restraints in upright position when the rear seats are 
occupied. 
Keep the area around head restraints clear of articles 
(e.g. clothing) to not obstruct the folding operation of 
the head restraints. 
     
        
        Page 65 of 399

62 Restraint systems
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Seat belts and integrated restraint system
Your vehicle is equipped with seat belts for all seats, 
emergency tensioning retractors for all seat belts, dual 
front airbags, door mounted side impact airbags, and 
head protective window curtain airbags. Their 
protective functions are designed to complement one 
another.
Seat belts
Important!
Laws in most states and all Canadian provinces require 
seat belt use. 
All states and provinces require use of child restraints 
that comply with U.S. Federal Motor Vehicle Safety 
Standard 213 and Canadian Motor Vehicle Safety 
Standard 213.
All child restraints systems are designed to be secured 
in vehicle seats by lap belts or the lap belt portion of a 
lap-shoulder belt.
For your safety and that of your passengers we strongly 
recommend their use.
Wa r n i n g !
Children 12 years old and under must never ride in 
the front seat, except in a Mercedes-Benz 
authorized BabySmart
TM compatible child seat, 
which operates with the BabySmart
TM system 
installed in the vehicle to deactivate the passenger 
side front airbag when it is properly installed. 
Otherwise they will be struck by the airbag when it 
inflates in a crash. If this happens, serious or fatal 
injury will result.
According to accident statistics, children are safer 
when properly restrained in the rear seating 
positions than in the front seating positions. 
Infants and small children must ride in back seats 
and be seated in an appropriate infant or child 
restraint system, which is properly secured with 
the vehicle’s seat belt, fully in accordance with the 
child seat manufacturer’s instructions.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.