Page 118 of 506

117 Controls in detailSeats
Seat heating*
Both switches for the front seats are 
located in the center console.
1Seat heating switchThe red indicator lamps on the switch1 
show which heating level you have select-
ed.
Switch on the ignition (
page 34).
All the lamps in the instrument cluster 
come on.Switching on seat heating
Press seat heating switch1 twice.
Three red indicator lamps in the switch 
come on.
Continue pressing seat heating 
switch1 until desired seat heating 
level is reached.
Switching off seat heating
Press seat heating switch1 
repeatedly until all red indicator lamps 
go out.
Level3
Three indicator lamps on.
After approximately five minutes, 
seat heating is automatically 
switched to level 2.
2
Two indicator lamps on.
After approximately ten minutes, 
seat heating is automatically 
switched to level 1.
1
One indicator lamp on.
After approximately 20 minutes, 
seat heating is automatically 
switched off.
off
No indicator lamp on.
iIf one or all of the indicator lamps flash 
on the seat heating switch1, there is 
insufficient voltage due to too many 
electrical consumers being switched 
on. The seat heating switches off 
automatically.
The seat heating will switch back on 
again automatically as soon as 
sufficient voltage is available. 
     
        
        Page 119 of 506

118 Controls in detailSeatsSeat ventilation*
Both switches for the front seats are 
located in the center console.
1Seat ventilation switchThe blue indicator lamps in the switch1 
show which ventilation level you have 
selected: 
Switch on the ignition (
page 34).
All lamps in the instrument cluster 
come on.
Switching on seat ventilation
Press seat ventilation switch1.
Three blue indicator lamps come on. 
Press seat ventilation switch1 
repeatedly until the desired seat venti-
lation level is reached.Switching off seat ventilation
Press seat ventilation switch1 
repeatedly until all blue indicator lamps 
go out.
Level3
Three indicator lamps on
2
Two indicator lamps on
1
One indicator lamp on
off
No indicator lamp on
iIf one or all of the indicator lamps flash 
on the seat ventilation switch1, there 
is insufficient voltage due to too many 
electrical consumers being switched 
on. The seat ventilation switches off 
automatically.
The seat ventilation will switch back on 
again automatically as soon as 
sufficient voltage is available. 
     
        
        Page 121 of 506

120 Controls in detailMemory functionThe memory button and memory position 
switch are located on the door.
1Memory button
2Memory position switch
Switch on the ignition (
page 34).
or
Open the respective door and insert 
the SmartKey in the starter switch.
Storing positions into memory
Adjust the seats, steering wheel and 
exterior rear view mirrors to the 
desired position (
page 37).
Turn memory position switch2 to the 
desired memory position.
Press memory button1.
Release memory button1 and press 
memory position switch2 within 
three seconds.
All settings are stored to the selected 
position.
Recalling positions from memory
Turn memory position switch2 to the 
desired memory position.
Press and hold memory position 
switch2 until the seat, steering wheel 
and exterior rear view mirrors have 
completely moved to the stored 
positions.!Do not operate the 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 seat backrest to an 
upright position.iReleasing the memory position switch 
stops movement to the stored 
positions immediately. 
     
        
        Page 122 of 506

121 Controls in detail
Memory function
Storing exterior rear view mirror park-ing position
For easier parking, you can adjust the 
passenger-side exterior rear view mirror so 
that you can see the right rear wheel as 
soon as you engage reverse gearR.
For information on activating the parking 
position feature, see “Setting parking posi-
tion for exterior rear view mirror” 
(page 157) and “Activating exterior rear 
view mirror parking position” 
(page 177).1Memory button
2Adjustment button
3Passenger side exterior rear view 
mirror button
Stop the vehicle.
Switch on the ignition (
page 34).
Press button3.
The passenger-side exterior rear view 
mirror is selected.
Adjust the passenger-side exterior rear 
view mirror with button2 so that you 
see the rear wheel and the road curb.
Press memory button1.
Within three seconds, press bottom of 
adjustment button2.
The parking position is stored if the 
mirror does not move.
iYou can store a parking position for the 
passenger-side exterior rear view 
mirror for each SmartKey or SmartKey 
with KEYLESS-GO*.
iIf the mirror does move, repeat the 
above steps. After the setting is stored 
you can move the mirror again. 
     
        
        Page 129 of 506

128 Controls in detailLightingSwitching on hazard warning flasher
Press hazard warning flasher 
switch1.
All turn signals are flashing.
Switching off hazard warning flasher
Press hazard warning flasher switch1 
again.
Interior lighting
The controls are located in the overhead 
control panel.
1Left front reading lamp
2Rocker switch for automatic control 
system
3Right front reading lampActivating automatic control
Press the rocker switch2 to the cen-
ter position.
Interior lamps are switched on in dark-
ness when you:
unlock the vehicle
open a door
remove the SmartKey from the 
starter switch
The interior lamps are switched off after a 
preset time, see “Setting interior lighting 
delayed shut-off” (
page 154).
iWith the hazard warning flasher 
activated and the combination switch 
set for either left or right turn, only the 
respective turn signals will operate 
when the ignition is switched on.iIf the hazard warning flasher has been 
activated automatically, press hazard 
warning flasher switch1 once to 
switch it off.
iIf the door remains open, the interior 
lamps switch off automatically after 
approximately five minutes when the 
SmartKey is removed or in starter 
switch position 0.
An interior lamp switched on manually 
does not go out automatically. 
     
        
        Page 131 of 506
130 Controls in detailInstrument clusterFor a full view illustration of the instrument 
cluster, see “Instrument cluster” 
(page 24).
1Reset button
The instrument cluster is activated when 
you
open a door
switch on the ignition (
page 36)
press reset button1
switch on the exterior lamps
You can change the instrument cluster 
settings in the Instrument cluster submenu 
of the control system (
page 145).
Instrument cluster illumination
Use the reset button1 to adjust the 
illumination brightness for the instrument 
cluster.To brighten illumination
Turn reset button1 clockwise.
The instrument cluster illumination will 
brighten.
To dim illumination
Turn reset button1 counterclock-
wise.
The instrument cluster illumination will 
dim.
iThe instrument cluster illumination is 
dimmed or brightened automatically to 
suit ambient light conditions.
The instrument cluster illumination will 
also be adjusted automatically when 
you switch on the vehicle’s exterior 
lamps. 
     
        
        Page 143 of 506

142 Controls in detailControl system
Press buttonk orj.
The stored messages will now be 
displayed in the order in which they 
have occurred. For malfunction and 
warning messages, see “Vehicle status 
messages in the multifunction display” 
(page 363).
Should the vehicle’s system record any 
conditions while driving, the number of 
messages will reappear in the multifunc-
tion display when the SmartKey in the 
starter switch is turned to position0 or 
removed from the starter switch. With 
KEYLESS-GO*, turn off the engine by 
pressing the KEYLESS-GO* start/stop 
button and open the driver’s door.
Settings menu
In the 
Settings
 menu there are two 
functions:
The function 
Reset to factory 
settings?
, with which you can reset all 
the settings to the original factory 
settings.
A collection of submenus with which 
you can make individual settings for 
your vehicle.
Press buttonè orÿ repeatedly 
until the 
Settings
 menu appears in the 
multifunction display.Resetting all settings
You can reset all the functions of all 
submenus to the factory settings.
Press the reset button in the 
instrument cluster (
page 130) for 
approximately three seconds.
The request to press the reset button 
once more to confirm appears in the 
multifunction display.
Press the reset button once more.
The functions of all the submenus will 
reset to factory settings.
iThe vehicle status message memory 
will be cleared when you switch on the 
ignition. You will then only see high-pri-
ority messages in the multifunction dis-
play (
page 363). 
     
        
        Page 177 of 506

176 Controls in detailGood visibilityFor information on the windshield wipers, 
see “Windshield wipers” (
page 52).
Headlamp cleaning system*
The switch is located on the left side of the 
dashboard.
1Headlamp washer switch
Switch on the ignition (
page 36). 
Press switch1.
The headlamps are cleaned with a 
high-pressure water jet.For information on filling up the washer 
reservoir, see “Windshield washer system 
and headlamp cleaning system*” 
(
page 460).
Rear view mirrors
For more information on setting the rear 
view mirrors, see “Mirrors” (
page 41).
Auto-dimming rear view mirrors
The reflection brightness of the exterior 
rear view mirror on the driver’s side and 
the interior rear view mirror will respond 
automatically to glare when
the ignition is switched on,
and
incoming light from headlamps falls on 
the sensor in the interior rear view 
mirror.
The rear view mirror will not react if
reverse gear R is engaged
the interior lighting is turned on
Warning!
G
The auto-dimming function does not react if 
incoming light is not aimed directly at sen-
sors in the interior rear view mirror.
The interior rear view mirror and the exterior 
rear view mirror on the driver’s side do not 
react, for example, if the wind screen is 
installed.
Glare can endanger you and others.Warning!
G
In the case of an accident, liquid electrolyte 
may escape from the mirror housing if the 
mirror glass breaks.
Electrolyte has an irritating effect. Do not 
allow the liquid to come into contact with 
eyes, skin, clothing, or respiratory system. 
In case it does, immediately flush affected 
area with water, and seek medical help if 
necessary.