Page 22 of 399
19 Instruments and controls
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index 1Door control panel, see page 20
2Overhead control panel, see page 213Dashboard, see page 22
4Center console, see page 24
Page 23 of 399
20 Instruments and controls
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Door control panel1Door handle, pull to open, see page 36
2Memory function (optional), for storing seat,
steering wheel and exterior rear view mirror
settings, see page 93
3Front seat adjustment switch (optional), see page 48
4Steering wheel adjustment switch (optional),
see page 88
5Power window switch, see page 197
Page 24 of 399
21 Instruments and controls
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Overhead control panel1Interior lighting, see page 203
2Tele Aid (emergency call system), see page 228
3Panorama sliding / pop-up roof, see page 200
4Hands-free microphone for Tele Aid and optional
telephone with voice recognition system
5Rear view mirror, see page 89
6Garage door opener, see page 221
Page 26 of 399
23 Instruments and controls
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index 1Hood lock release, see page 315
2Parking brake pedal, see page 256
3Steering wheel adjustment (manual), see page 87
4Parking brake release, see page 256
5Exterior lamp switch, see page 143
6Combination switch, see page 148
7Exterior mirror adjustment switch, see page 90
8Headlamp washer button, see page 147
9Cruise control switch, see page 26810Multifunction steering wheel, see page 102
Horn (with electronic key in starter switch
position 1 or 2)
11Instrument cluster, see page 96
12Voice recognition system switch (optional), see
separate operating instructions
13Starter switch, see page 240
14Glove box lid release, see page 207
15Glove box lock, see page 207
Page 27 of 399
24 Instruments and controls
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Center console1Left front seat heater switch, see page 58
2ESP (electronic stability program) control switch, ,
see page 274
3Hazard warning flasher switch, see page 151
4Central locking switch, see page 38
5Antitheft alarm system, see page 44
Switch for tow-away protection, see page 46
6Right front seat heater switch, see page 58
7AIRBAG OFF indicator lamp, see page 289
8COMAND system (optional), see separate
operating instructions, or
audio system, see page 173
9Climate control, see page 152
Automatic climate control, see page 160
Rear window defroster, see page 170
P68.20-2457-27
2
3
4
56
78913
Page 28 of 399
25 Instruments and controls
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index 10Ashtray, see page 211
11Automatic transmission, see page 246, or
Manual transmission, see page 24412Storage compartment, see page 208
13Armrest, see page 208
Storage compartment, see page 213
Page 32 of 399

29 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Electronic key
The electronic 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 glove box lock.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 key.
The infrared receivers are located in the door handles.
Note:
Remove the mechanical key from the electronic key
when using valet parking service. To prevent access to
trunk or storage compartments lock them separately
and retain the mechanical key.
See page 41 for separate locking of trunk and page 207
for locking of glove box.
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.
Page 33 of 399

30 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Start lock-out
Important!
Removing the electronic key from the starter switch
activates the start lock-out. The engine cannot be
started.
Inserting the electronic key in the starter switch
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 starter switch, 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 key, see
page 351, or synchronize the electronic key, see
page 353.
•Use the mechanical key to unlock the vehicle. To
start engine, insert the electronic key in the starter
switch. There could be a slight delay until the
electronic key can be turned in the starter switch.
Important!
When unlocking the driver’s door with the mechanical
key, the exterior lamps will flash and the alarm will
sound.
To cancel the alarm, insert the electronic key in the
starter switch or press buttonŒ or‹ on the
electronic key.