
67 Seats
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Front seat adjustment
To operate the front power seat adjustment switches, 
turn the electronic key in starter switch to position 1 
or 2 (with a front door open, the power seats can also be 
operated with the electronic key removed or in starter 
switch 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 ride in a moving vehicle with the seat back 
reclined. Sitting in an excessively reclined position 
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 abdomen or neck. That 
could cause serious or fatal injuries. The seat back 
and seat belts provide the best restraint when the 
wearer is in an upright position and belts are 
properly positioned on the body.Never place hands under seat or near any moving 
parts while a seat is being adjusted.
When leaving the vehicle always remove the 
electronic key from the starter switch, take the 
KEYLESS-GO-card (if so equipped) with you, and 
lock your vehicle. The power seats can also be operated with the 
driver’s or front 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. 

71 Seats
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Removal and installation of front seat head 
restraints
Caution!
Do not remove head restraints except when mounting 
seat covers. Whenever restraints have been removed be 
sure to reinstall them before driving.Note:
Tilt the backrest rearward for easier removal and 
installation of the head restraints.
To remove:
Press switch (1) downwards and hold until the head 
restraint is fully retracted. Pull head restraint out with 
one strong jerking movement.
To  i n st a l l :
Press switch (1) downwards and hold for about 
5seconds. 
Press the head restraint down until it engages.
Adjust head restraint to the desired position.
P91.16-2030-26
1
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. 

73 Seats
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care IndexNotes:
The automatic seat slide is provided with a safety 
feature.
The automatic process is interrupted, if the backrest of 
the sliding seat is pushed against an occupant or object. 
The seat will slide forward and stop.
Investigate and correct the cause of interruption.
Now use memory button (page 112) or power seat switch 
(page 68) to bring seat into desired position.
When folding the backrest forward from a reclined 
position, and then folding it back, the backrest stops in a 
more upright position for the safety of any rear-seat 
passenger. Adjust the backrest until your arms are 
slightly angled when holding the steering wheel, see 
page 68.
When leaving the vehicle always remove the 
electronic key from the starter switch, take the 
KEYLESS-GO-card (if so equipped) with you, 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. 

88 Restraint systems
Te ch n ica 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 electronic key removed 
or in starter switch position 0. The system does not 
deactivate the door mounted side impact airbag.
BabySmart
TM is a trademark of Siemens Automotive Corp.
Wa r n i n g !
USE CHILD RESTRAINTS PROPERLY.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 
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 the 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.
Children too big for child restraint systems must 
ride in back seats using regular seat belts. Position 
shoulder belt across chest and shoulder, not face or 
neck. A booster seat may be necessary to achieve 
proper belt positioning. 

91 Restraint systems
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Emergency tensioning retractor (ETR)
The seat belts for the front and rear seats are equipped 
with emergency tensioning retractors. These tensioning 
retractors are located in each belt’s inertia reel and 
become operationally ready with the electronic key in 
starter switch position 1 or 2.
The emergency tensioning retractors are designed to 
activate only when the seat belts are fastened during 
frontal impacts exceeding the first threshold of the SRS and in rear impacts exceeding a preset severity level. 
They remove slack from the belts in such a way that the 
seat belts fit more snugly against the body restricting its 
forward movement as much as possible.
In cases of other frontal impacts, angled impacts, roll-
overs, certain side impacts, or other accidents without 
sufficient frontal or rear impact forces, the emergency 
tensioning retractors will not be activated. The driver 
and passengers will then be protected by the fastened 
seat belts and inertia reel in the usual manner. 

103 Restraint systems
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
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 
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 can 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.Infants and small children should never share a 
seat belt with another occupant. During an 
accident, they could be crushed between the 
occupant and seat belt.
Children too big for child restraint systems must 
ride in back seats using regular seat belts. Position 
shoulder belt across chest and shoulder, not face or 
neck. A booster seat may be necessary to achieve 
proper belt positioning for children from 41 lbs. to 
the point where a lap/shoulder belt fits properly 
without one.When the child restraint is not in use, remove it 
from the vehicle or secure it with the seat belt to 
prevent the child restraint from becoming a 
projectile in the event of an accident. 

167 Automatic climate control
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Automatic climate control
The system is always at operational readiness, except 
when manually switched off.
The automatic climate control only operates with the 
engine running.
The temperature selector should be left at the desired 
temperature setting. The temperature selected is 
reached as quickly as possible.
Th e system w il l not hea t or c ool a ny q uicker by setting a 
higher or lower temperature.
The desired interior temperature and air distribution 
can be selected separately for the left and right side of 
the passenger compartment.
The automatic climate control removes considerable 
moisture from the air during operation in the cooling 
mode. It is normal for water to drip on the ground 
through ducts in the underbody.
The air conditioning will not engage (no cooling) if the 
economy modeS is selected, see page 173. Notes:
Do not obstruct the air flow by placing objects on the air 
flow-through exhaust slots below the rear window.
Also keep the air intake grill in front of the windshield 
free of snow and debris.
The storage compartment between the front seats can be 
ventilated. See page 175 for notes on ventilating the 
storage space under the armrest in the center console. 
The air conditioner switches itself off for its own 
protection if refrigerant is lost. No cooling will then take 
place. Economy modeS cannot be switched off. Have 
the air conditioner checked by a Mercedes-Benz Center 
should this happen.
Dust filter
Nearly all dust particles and pollen are filtered out 
before outside air enters the passenger compartment 
through the air distribution system. 

197 Interior equipment
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Rear seatsTo  o p e n :
Briefly touch the top of the cover, the ashtray opens 
automatically.
To remove the insert:
Push down on catch (2) and pull out the ashtray insert.
To install the insert:
Position the insert and close the cover.
2