Page 30 of 399

27 Contents - Operation
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Individual settings.........................  121
Setting the audio volume..............  136
Coolant temperature gauge ..........  137
Flexible service system (FSS) ......  138
Engine oil level indicator ..............  141
Engine oil consumption ................  142
Exterior lamp switch .....................  143
Headlamp mode .............................  144
Night security illumination..........  146
Locator lighting ..........................  147
Headlamp cleaning system ..........  147
Combination switch.......................  148
Hazard warning flasher switch ...  151
Climate control ...............................  152
Automatic climate control ............  160Front center console storage 
compartment ventilation ..........  171
Rear passenger compartment 
adjustable air outlets ...............  172
Operation Audio and 
telephone ...................................  173
Operating safety ............................  173
Operating and display elements ..  174
Button and soft key operation ......  176
Component malfunctions .............  195
Power windows ..............................  197
Sunshade for panorama 
sliding/pop-up roof ..................  199
Panorama sliding/pop-up roof ....  200
Interior lighting .............................  203
Sun visors .......................................  205
Vanity mirrors................................  205
Interior ............................................  206Storage compartments 
and armrests  ..............................206
Glove box ..................................... 207
Cup holder ......................................  210
Ashtrays ..........................................  211
Lighter .............................................  213
Parcel net in front passenger 
footwell .......................................  214
Split folding rear seat bench ........  215
Luggage cover – removal 
and installation .........................  217
Loading instructions (vehicle 
with enlarged cargo area) ........  218
Cellular telephone .........................  219
Telephone, general ........................ 220
Garage door opener .......................  221 
     
        
        Page 66 of 399

63 Restraint systems
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care IndexSeat belt nonusage warning system
With the electronic key in starter switch position 2, a 
warning sounds for a short time if the driver’s seat belt 
is not fastened. 
Automatic comfort-fit seat belt:
An automatic comfort-fit feature for driver and front 
passenger seat belt is activated when the electronic key 
in the starter switch is turned to position 1 or 2.
The retraction force of the inertia reel is reduced, 
increasing the level of seat belt comfort.
Note:
For cleaning and care of the seat belts see page 365.
Wa r n i n g !
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 is properly positioned on the body. 
     
        
        Page 85 of 399

82 Restraint systems
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Infant and child restraint systems
We recommend all infants and children be properly 
restrained at all times while the vehicle is in motion. All 
lap-shoulder belts except the driver seat belt have 
special seat belt retractors for secure fastening of child 
restraints.
To activate, pull shoulder belt out completely and let it 
retract. During the seat belt retraction a ratcheting 
sound can be heard to indicate that the special seat belt 
retractor is activated. The belt is now locked.
To deactivate, release seat belt buckle and let seat belt 
retract completely. The seat belt can again be used in 
the usual manner.
Note:
For child seats with mounting fittings for tether 
anchorages refer to page 84 (installation of infant and 
child restraint systems).Important!
The use of infant or child restraints is required by law in 
all 50 states and all Canadian provinces.
Infants and small children should be seated in an 
appropriate infant or child restraint system properly 
secured by a lap-shoulder belt, and that complies with 
U.S. Federal Motor Vehicle Safety Standard 213 and 
Canadian Motor Vehicle Safety Standard 213. 
A statement by the child restraint manufacturer of 
compliance with this standard can be found on the 
instruction label on the restraint and in the instruction 
manual provided with the restraint.
When using any infant or child restraint system, be sure 
to carefully read and follow all manufacturer’s 
instructions for installation and use.
Please read and observe warning labels affixed to the 
inside of the vehicle and to infant or child restraints.
Wa r n i n g !
Never release the seat belt buckle while vehicle is 
in motion, since the special seat belt retractor will 
be deactivated. 
     
        
        Page 90 of 399
87 Restraint systems
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Steering wheel adjustment (manual)Unlocking:
Pull handle (1) out to its stop.
Adjusting:
Move steering wheel to the desired position.
Locking:
Push handle (1) in until it engages.
Important!
Do not drive the vehicle until you have properly locked 
the steering column.
See “STEERING WHEEL ADJUST” on page 308 for 
malfunction and warning messages in the multifunction 
display. 
Wa r n i n g !
Do not adjust the steering wheel while driving. 
Adjusting the steering wheel while driving, or 
driving without the adjustment locked could cause 
the driver to lose control of the vehicle.
P46.15-2062-26 
     
        
        Page 100 of 399

97 Instrument cluster
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index 1Knob for instrument cluster illumination, 
seepage99
Reset knob for trip odometer, see page 101 and 
individual settings, see page 121
2Tachometer
3Speedometer
4Left turn signal indicator lamp, see combination 
switch on page 148
5Electronic stability program (ESP) warning lamp, 
see page 288
6Indicator lamp without function. It illuminates with 
the electronic key in starter switch position 2. It 
should go out when the engine is running.
7Right turn signal indicator lamp, see combination 
switch on page 148
8Indicator lamp without function. It illuminates with 
the electronic key in starter switch position 2. It 
should go out when the engine is running.9Multifunction display, see page 102
Malfunction and warning messages in the 
multifunction display, see page 290
10Trip odometer, see page 101 and 106
11Main odometer, see page 106
12Display for program mode and gear range 
indicators, page 249
13Malfunction/warning message memory, 
seepage119
14Outside temperature indicator, see page 100
15Digital clock
To set the time, see individual settings on page 121
16Fuel gauge with reserve warning lamp, see page 286 
     
        
        Page 103 of 399

100 Instrument cluster
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
Outside temperature indicator (14)
The temperature sensor is located in the front bumper 
area. Due to its location, the sensor can be affected by 
road or engine heat during idling or slow driving. This 
means that the accuracy of the displayed temperature 
can only be verified by comparison to a thermometer 
placed next to the sensor, not by comparison to external 
displays (e.g. bank signs etc.).Adaption to ambient temperature takes place in steps 
and depends on the prevailing driving conditions (stop-
and-go or moderate, constant driving) and amount of 
temperature change.
Note:
The unit for the temperature indicator display can be set 
in the individual setting menu “INSTRUMENT 
CLUSTER” – “TEMP. INDICATOR” on page 121.
Wa r n i n g !
The outside temperature indicator is not designed 
to serve as an Ice-Warning Device and is therefore 
unsuitable for that purpose. Indicated 
temperatures just above the freezing point do not 
guarantee that the road surface is free of ice. 
     
        
        Page 122 of 399

119 Multifunction steering wheel, multifunction display
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Malfunction / warning message memory 1There are no messages stored in the system.
2Number of messages stored in the system.
3There are messages stored in the system.
Press the è or ÿ button repeatedly until the 
message memory (1 or 2) is displayed.
Press the j or k button if display (2) appears. 
The stored messages will now be displayed in order.
See page 290 for malfunction and warning messages.
Display (2) will reappear after you have scanned all the 
malfunction and warning messages.
Should any malfunction or warning messages be stored 
while driving, they will reappear in the display (2) when 
the electronic key is in starter switch position 0 or 
removed from the starter switch.
The malfunction or warning messages will now be 
displayed for approximately 5 seconds each.
Pressing the reset knob on the instrument cluster 
(see page 96) displays the malfunction and warning 
messages once more.
P54.30-4644-27 
     
        
        Page 123 of 399

120 Multifunction steering wheel, multifunction display
Te ch n i c a l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index
The message memory will be cleared when the 
electronic key is turned in the starter switch to 
position 1 or 2. Should any subsequent faults occur, 
they will be displayed in the message memory.
Pressing the è or ÿ button displays the next or 
previous system.Important!
Malfunction and warning messages are only indicated 
for certain systems and displayed to a low level of detail. 
The malfunction and warning messages are simply a 
reminder with respect to the operation of certain 
systems and do not replace the driver’s responsibility to 
maintain the vehicle’s operating safety by having all 
required maintenance and safety checks performed on 
the vehicle and by bringing the vehicle to an authorized 
Mercedes-Benz Center to address the malfunction and 
warning messages. See page 290, for malfunction and 
warning messages.