Page 41 of 290

38 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Power seats
To operate the power seat adjustment switches, turn key 
in steering lock to position 1 or 2 (with a door open, the 
power seats can also be operated with the key removed 
or in steering lock position 0).
Wa r n i n g !
Do not adjust the driver’s seat while driving. 
Adjusting the seat while driving could cause the 
driver to lose control of the vehicle.Never place hands under seat or near any moving 
parts while a seat is being adjusted.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.When leaving the vehicle always remove the key 
from the steering lock, and lock your vehicle.The power seats can also be operated with 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. 
     
        
        Page 43 of 290

40 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
5Head restraint height
6Head restraint release
Head restraint height
Raising:
Pull up on head restraint.
Lowering:
Push down on head restraint.
Adjust head restraint to support the back of the head 
approximately at ear level.For removal or installation of head restraint, first open 
the roof.
Removal:
Pull head restraint to its highest position. Push 
button (6) and pull head restraint out.
Installation:
Insert the head restraint and push it down to the stop.
Adjust head restraint to the desired position.
Caution!
Do not remove head restraints except when mounting 
seat covers. Whenever restraints have been removed be 
sure to reinstall them before driving.
P91.16-2052-26
6
5
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 54 of 290

51 Restraint systems
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index BabySmart
TM airbag deactivation system
Special BabySmart
TM compatible child seats, designed 
for use with the Mercedes-Benz system and available at 
any authorized Mercedes-Benz Center are required for 
use with the BabySmart
TM airbag deactivation system.
With the special child seat properly installed, the 
passenger front airbag will not deploy. The 7 
indicator lamp located on the center console will be 
illuminated, except with key removed or in steering lock 
position 0. The system does not deactivate the door 
mounted side impact airbag.
Self-test BabySmart
TM
without special child seat installed
After turning key in steering lock to position 1 or 2, the 
7 indicator lamp located on the center console 
comes on for approximately 6 seconds and then 
extinguishes.
If the indicator lamp should not come on or is 
continuously lit, the system is not functioning. You must 
see an authorized Mercedes-Benz Center before seating 
any child on the passenger seat.BabySmart
TM is a trademark of Siemens Automotive Corp.
Wa r n i n g !
The BabySmart
TM airbag deactivation system will 
ONLY work with a special child seat designed to 
operate with it. It will not work with child seats 
which are not BabySmart
TM compatible.
Never place anything between seat cushion and 
child seat (e.g. pillow), since it reduces the 
effectiveness of the deactivation system. The 
bottom of the child seat must make full contact 
with the passenger seat cushion. An incorrectly 
mounted child seat could cause injuries to the 
child in case of an accident instead of protecting 
the child.
Follow the manufacturer’s instructions for 
installation of special child seats.The passenger front airbag will not deploy only if 
the 7 indicator lamp remains illuminated.Please be sure to check the indicator every time 
you use the special system child seat. Should the 
light go out while the restraint is installed, please 
check installation. If the light remains out, do not 
use the BabySmart
TM restraint to transport children 
on the passenger seat until the system has been 
repaired. 
     
        
        Page 146 of 290
143 Steering lock
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Notes:
A warning sounds when the driver’s door is opened 
while the key is in steering lock position 1 or 0.
With the engine at idle speed, the charging rate of the 
alternator (output) is limited.
It is therefore recommended that you turn off 
unnecessary electrical consumers while driving in stop-
and-go traffic. This precaution helps to avoid draining of 
the battery.
Unnecessary strain on the battery and charging system 
may be minimized by turning off the following power 
consumers, for example: Heated seats, rear window 
defroster.Caution!
To prevent accelerated battery discharge and a possible 
dead battery, always remove the key from the steering 
lock. Do not leave the key in steering lock position 0.