
1 Contents
IntroductionProduct information  .......................... 7
Operator’s manual  ............................. 8
Where to find it  ................................ 13
Reporting Safety Defects  ................ 15Instruments and controlsInstruments and controls  ............... 18
Center console  .............................. 20
Overhead control panel  ............... 21OperationVehicle keys  ...................................... 24
Start lock-out  .................................... 26
General notes on the central 
locking system ............................. 26
Central locking system  ................... 27
Radio frequency and infrared 
remote control  .............................. 27
Opening and closing windows 
and sliding/pop-up roof from 
outside ........................................... 30Panic button  ..................................31
Mechanical keys  ...........................31
Doors ................................................. 32
Central locking switch .................... 34
Automatic central locking .............. 35
Emergency unlocking in case of 
accident ........................................ 35
Tailgate .............................................. 36
Antitheft alarm system ................... 39
Tow-away alarm  ................................41
Power seats front  ............................. 42
Front seat head restraints .............. 48
Rear seat head restraints  ............... 49
Multicontour seat  .............................51
Seat heater ........................................ 52
Seat ventilation ................................ 55
Seat belts and integrated restraint 
system .......................................... 57
Seat belts  .......................................... 57
Seat belt nonusage warning
system .......................................... 58
BabySmart
TM airbag deactivation 
system .......................................... 65Self-test BabySmart
TM without 
special child seat installed  ......... 65
Supplemental restraint 
system (SRS)  ................................ 66
Emergency tensioning 
device (ETD) ................................. 67
Airbags .............................................. 68
Safety guidelines for the seat belt, 
emergency tensioning device and 
airbag ............................................ 75
Infant and child restraint
systems ......................................... 77
Steering wheel adjustment  ............ 81
Rear view mirrors  ............................ 82
Instrument cluster  ........................... 86
Multifunction steering wheel, 
multifunction display  ................. 92
Trip and main odometer, vehicle 
speed, FSS and engine oil level 
display .......................................... 96
Audio systems  .................................. 97
Radio .............................................. 97
CD player  ....................................... 98
Cassette player  ............................. 99
Telephone ........................................ 100 

22 Contents – Operation
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
OperationVehicle keys  ...................................... 24
Start lock-out  .................................... 26
General notes on the central 
locking system ............................. 26
Central locking system  ................... 27
Radio frequency and infrared 
remote control  .............................. 27
Opening and closing windows 
and sliding/pop-up roof from 
outside ........................................... 30
Panic button  .................................. 31
Mechanical keys  ........................... 31
Doors .................................................. 32
Central locking switch  .................... 34
Automatic central locking  .............. 35
Emergency unlocking in case of 
accident ........................................ 35
Tailgate .............................................. 36
Antitheft alarm system  ................... 39
Tow-away alarm ................................ 41
Power seats front  ............................. 42
Front seat head restraints  .............. 48Rear seat head restraints  ............... 49
Multicontour seat  .............................51
Seat heater ........................................ 52
Seat ventilation ................................ 55
Seat belts and integrated restraint 
system .......................................... 57
Seat belts  .......................................... 57
Seat belt nonusage warning
system .......................................... 58
BabySmart
TM airbag deactivation 
system .......................................... 65
Self-test BabySmart
TM without 
special child seat installed  ......... 65
Supplemental restraint
system (SRS)  ............................... 66
Emergency tensioning 
device (ETD)  ................................ 67
Airbags .............................................. 68
Safety guidelines for the seat belt, 
emergency tensioning device and 
airbag ........................................... 75
Infant and child restraint
systems ........................................ 77
Steering wheel adjustment  .............81
Rear view mirrors  ........................... 82Instrument cluster  ........................... 86
Multifunction steering wheel, 
multifunction display  ................. 92
Trip and main odometer, vehicle 
speed, FSS and engine oil level 
display .......................................... 96
Audio systems  .................................. 97
Radio .............................................. 97
CD player  ....................................... 98
Cassette player  ............................. 99
Telephone ........................................ 100
Telephone book  .......................... 100
Redialing ..................................... 102
Incoming call  .............................. 104
Navigation system .......................... 105
Trip computer ................................. 106
Malfunction message memory  .... 108
Individual settings ..........................110
Setting the audio volume  ..............113
Flexible service system (FSS)  .......114
Engine oil level indicator ...............117
Engine oil consumption  .................118
Exterior lamp switch  ......................119
Night security Illumination  ......... 120 

42 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Power seats front
To operate the front power seat adjustment switches, 
turn electronic key in steering lock to position 1 or 2 
(with the driver’s or front passenger’s door open, the 
power seats can also be operated with the electronic 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 ride in a moving vehicle with the backrest 
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 even fatal injuries. The 
backrest and seat belt provide the best restraint 
when the wearer is in an upright position and the 
belt 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 steering lock, 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 an accident and/or serious 
personal injury. 

43 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index The slide switches are located in each front door.
We recommend to adjust the power seat in the following 
order:
1Seat, up / down
Press the switch (up / down direction) until 
comfortable seating position with still sufficient 
headroom is reached.
2Seat adjustment, fore / aft
Press the switch (fore / aft direction) until a 
comfortable seating position is reached that still allows you to reach the accelerator / brake pedal 
safely. The position should be as far rearward as 
possible, consistent with ability to properly operate 
controls.
3Seat cushion tilt
Press the switch in the direction of the arrow until 
your legs are lightly supported. 
4Backrest tilt
Press the switch in the direction of the arrow until 
your arms are slightly angled when holding the 
steering wheel.
5Head restraint
The height of the head restraint is adjusted 
automatically with the seat so that the back of the 
head is supported approximately at ear level. Adjust 
the head restraint using the switch if the preset 
position does not support the back of your head 
approximately at ear level.
Adjust t he head restraint angle by hand.
Note:
Your vehicle is equipped with power head restraints, 
do not try to raise or lower them manually.
2
5
4
3
2
1
P54.00-2074-26 

44 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Synchronizing head restraints
If the power supply was interrupted (battery 
disconnected or empty), the head restraints are no 
longer adjusted automatically.
To resynchronize the adjustment feature, turn 
electronic key in steering lock to position 2, move the 
seat completely forward and the head restraint fully 
down, and hold respective buttons for approximately 
two seconds.Caution!
Do not remove head restraints except when mounting 
seat covers. For removal refer to Head Restraints, Front, 
see page 48. Whenever restraints have been removed be 
sure to reinstall them before driving. 

45 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Memory function
6Memory button
7Position buttonsStoring positions into memory
Three sets of seat / head restraint / steering wheel and 
exterior rear view mirror positions may be programmed 
into memory. After the seat / head restraint / steering 
wheel and exterior rear view mirrors are positioned, 
push memory button (6), release, and within 3 seconds 
push position button “1”. A second and third set of 
positions for the same seat / head restraint / steering 
wheel and exterior rear view mirrors can be 
programmed into memory by pushing first memory 
button (6) and then “2”, respectively “3”.
Note:
For instructions on adjustment of steering wheel and 
mirrors, see Page 81 and 82.
Wa r n i n g !
Do not activate the memory function while driving. 
Activating the memory function while driving 
could cause the driver to lose the control of the 
vehicle.
76
P54.00-2075-26 

46 Seats
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Recalling positions from memory
To recall a seat / head restraint / steering wheel and 
exterior rear view mirror position, push and hold 
position button “1”, “2” or “3” until seat / head restraint /
steering wheel and exterior rear view mirror movement 
has stopped. The seat / head restraint / steering wheel 
and exterior rear view mirror movement stops when the 
position button is released.
Caution!
Do not operate the power seats using the memory 
button if the seat backrest is in an excessively reclined 
position. Doing so could cause damage to front or rear 
seats.
First move the backrest to an upright position.Important!
Prior to operating the vehicle, the driver should adjust 
the seat height for proper vision as well as fore / aft 
placement and backrest angle to ensure adequate 
control, reach, operation, and comfort. The head 
restraint should also be adjusted for proper height. See 
also airbag section for proper seat positioning.
In addition, also adjust the steering wheel to ensure 
adequate control, reach, operation, and comfort.
Both the inside and outside rear view mirrors should be 
adjusted for adequate rearward vision.
Fasten seat belts. Infants and small children should be 
seated in a properly secured restraint system that 
complies with U.S. Federal Motor Vehicle Safety 
Standard 213 and Canadian Motor Vehicle Safety 
Standard 213.
All seat, head restraint, steering wheel, and rear view 
mirror adjustments as well as fastening of seat belts 
should be done before the vehicle is put into motion. 

47 Seats
Te ch n i c a 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-
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 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 the back 
seats and be seated in an appropriate infant or 
child restraint system, which is properly secured 
with the vehicle’s seat belt and top tether strap, 
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.