Page 3 of 299

IntroductionCentral locking switch 35 Exterior rear view mirrors 75
Product information 7 Automatic central locking 36 Instrument cluster 78
Operator’s manual 8 Emergency unlocking in case of accident 37 Multifunction steering wheel,
Wheretofindit 13 Trunk 38multifunction display
84
Reporting Safety Defects 15 Trunk lid release switch 40Trip and main odometer,
Antitheft alarm system 41 vehicle speed, FSS and engine
Instruments and controlsTow-away alarm 43 oil level indicator 88
Instruments and controls 18 Power seats, front 44
Center console 20 Front head restraints 49 Audio systems 89
Overhead control panel 21 Head restraints, rear 50 Telephone 92
Backrest 51 Navigation system 97
OperationMulticontour seat 52 Trip computer 98
Vehicle keys 24 Heated seats 53 Malfunction message memory 100
Start lock-out 26 Seat belts and integrated restraint system 55 Individual settings 102
General notes on the central
locking system 26Seat belts 55 Setting the audio volume 104
Central locking system 27 Seat belt nonusage warning system 56 Flexible service system (FSS) 105
Radio frequency and infrared
remote control 27BabySmart™ airbag deactivation system 62 Checking engine oil level 108
Locking and unlocking 29 Supplemental restraint system (SRS) 63 Engine oil consumption 109
Choosing global or selective mode
on remote control 29Emergency tensioning retractor (ETR) 63 Exterior lamp switch 110
Opening the trunk 30 Airbags 64 Night security illumination 111
Opening and closing windows
from outside 30Safety guidelines for the seat belt,
emergency tensioning retractor and airbag 69Headlamp cleaning system 112
Panic button 32 Infant and child restraint systems 70 Combination switch 113
Mechanical keys 32 Adjusting telescoping steering column 73 Hazard warning flasher switch 115
Doors
33 Inside rear view mirror 74 Automatic climate control 116
3
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Operation Audio and telephone 123
DrivingBrakes 185
Power windows 141 Driving off 186
Sliding/pop-up roof 143 Control and operation of radio Parking 187
Interior lighting 145 transmitters 162 Tires 187
Rear window sunshade 146 COMAND, radio, telephone and Snow chains 190
Sun visors 146 two-way radio 162 Winter driving instructions 190
Illuminated vanity mirrors 147 Maintenance 163 Deep water 191
Interior 147 Catalytic converter 164 Passenger compartment 192
Storage compartments, armrest and
cup holder 147Emission control 165 Travelling abroad 192
Glove box 148 Tele Aid 166 Cruise control 193
Ashtrays 150 Steering lock 172 Brake assist system (BAS) 196
Lighter 151 Starting and turning off the engine 174 Antilock brake system (ABS) 198
Enlarged cargo area – split folding rear
seat backrest 152Automatic transmission 175
Electronic stability program (ESP)
200
Loading instructions 153 Parking brake 184 What you should know at the
Cargo tie down rings 155 Driving instructions 184 gas station 203
Parcel net in front passenger footwell 155 Drive sensibly – save fuel 184 Check regularly and before a
long trip 205
Telephone, general 156 Drinking and driving 185
Cellular telephone 156 Pedals 185
Garage door opener 157 Power assistance 185
4
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Operation
Tow-away alarm 43 Multifunction steering wheel,
Power seats, front 44multifunction display
84
Vehicle keys 24 Front head restraints 49Trip and main odometer, vehicle
speed, FSS and engine
Start lock-out 26 Head restraints, rear 50 oil level indicator 88
General notes on the central
locking system 26Backrest 51 Audio systems 89
Central locking system 27 Multicontour seat 52 Telephone 92
Radio frequency and infrared
remote control 27Heated seats 53 Navigation system 97
Locking and unlocking 29 Seat belts and integrated restraint system 55 Trip computer 98
Choosing global or selective mode
on remote control 29Seat belts 55 Malfunction message memory 100
Opening the trunk 30 Seat belt nonusage warning system 56 Individual settings 102
Opening and closing windows
from outside 30BabySmart™ airbag deactivation system 62 Setting the audio volume 104
Panic button 32 Supplemental restraint system (SRS) 63 Flexible service system (FSS) 105
Mechanical keys 32 Emergency tensioning retractor (ETR) 63 Checking engine oil level 108
Doors 33 Airbags 64
Central locking switch 35 Safety guidelines for the seat belt,
emergency tensioning retractor and airbag 69
Automatic central locking 36 Infant and child restraint systems 70
Emergency unlocking in case of Adjusting telescoping steering column 73
accident 37 Inside rear view mirror 74
Trunk 38 Exterior rear view mirrors 75
Trunk lid release switch 40 Instrument cluster 78
Antitheft alarm system 41
22
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Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Ve h i c l e k ey s
Included with your vehicle are:
•2 electronic main keys with integrated radio
frequency and infrared remote controls plus
removable mechanical key.
The locking tabs for the mechanical key portion of
the two electronic main keys are a different color to
help distinguish it.
•1 electronic reserve key without remote control
functions, plus removable mechanical key.
Wa r n i n g !
When leaving the vehicle always remove the
electronic key from the steering lock, and lock your
vehicle. 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.Electronic main key
The electronic main key has an integrated radio
frequency and infrared remote control, plus removable
mechanical key.
The remote control (1) operates all locks on the vehicle.
The mechanical key (2) works only in the driver’s door,
trunk, and storage compartment locks.
P80.35-2031-26
The mechanical key (2)
lock can be removed b
y
sliding it out of the remote control.
To d o s o , m o ve(3)
in direction of arrow
( 5). and slide the mechanical key (2) in direction
of arrow
24
Page 25 of 299

Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index When using the mechanical key (2) for lock operations,
it can be removed by sliding it out of the remote control.
To do so, move locking tab (3) to the right and slide the
mechanical key (2) in direction of arrow (4).
The remote control transmitter is located in the
electronic main key.
The infrared receivers are located in the door handles.
Notes:
Remove the mechanical key from the electronic main
key when using valet parking service. To prevent access
to trunk or storage compartments lock them separately
and retain the mechanical key. The mechanical key (2)
lock can be removed b
y
sliding it out of the remote control.
To d o s o , m o ve(3)
in direction of arrow
( 5). and slide the mechanical key (2) in direction
of arrowElectronic reserve key
The electronic reserve key is without remote control
functions, but with removable mechanical key.
The electronic reserve key (1) works only in the steering
lock. There are no batteries inside the electronic reserve
ke y.
The mechanical key (2) works only in the driver’s door,
trunk, and storage compartment locks.
To use the mechanical key (2), remove it from its
electronic reserve key (1).
P80.30-2069-26
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Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Note:
We recommend that you carry the electronic reserve
key plus mechanical key with you and keep it in a safe
place (e.g. your wallet) so that it is always handy. Never
leave the electronic reserve key in the vehicle.
Obtaining replacement keys
Your vehicle is equipped with a theft deterrent locking
system requiring a special key manufacturing process.
For security reasons, replacement keys can only be
obtained from your authorized Mercedes-Benz Center.
Start lock-out
Important!
Removing the electronic key from the steering lock
activates the start lock-out. The engine cannot be
started.
Inserting the electronic key in the steering lock
deactivates the start lock-out.Note:
In case the engine cannot be started (vehicle’s battery is
in order), the system is not operational. Contact an
authorized Mercedes-Benz Center or call 1-800-FOR-
MERCedes (in the USA) or 1-800-387-0100 (in Canada).
General notes on the central locking system
If the electronic key is inserted in the steering lock, the
vehicle cannot be locked or unlocked with the remote
control.
If the vehicle cannot be locked or unlocked:
•Aim transmitter eye at a receiver of either door
handle. Check the batteries of the electronic main
key, see page264, or synchronize the remote
control, see page266.
•Use the mechanical key to unlock the driver’s door.
To start the engine, insert the electronic main key in
the steering lock. There could be a slight delay until
the electronic main key can be turned in the
steering lock.
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Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Central locking system
Radio frequency and infrared remote control
The electronic main key has an integrated radio
frequency and infrared remote control.
Due to the extended operational range of the remote
control, it could be possible to unintentionally lock or
unlock the vehicle by pressing the transmit button. If
one of the transmit buttons is pressed, the battery check
lamp lights up briefly – indicating that the batteries are
in order.
The vehicle doors, trunk and fuel filler flap can be
centrally locked and unlocked via remote control.
Opening and closing the windows remotely can only be
done with the infrared portion of the remote control.
Aim transmitter eye at a receiver (6 or 7), press and
hold transmit button Œor ‹.
If the electronic key is inserted in steering lock, the
vehicle cannot be locked or unlocked with the remote
control.1Transmit button
‹ Locking
Œ Unlocking
Š Opening trunk (if not separately locked)
2
Lamp for battery check and function control 3PANIC button
4
Transmitter eye
5
Release button
for mechanical key
P80.30-2070-26
27
Page 28 of 299
Central locking system
Te ch n ica l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index 6Infrared receiver in driver’s door handle7Infrared receiver in passenger door handle
28