
03 Your driving environment
 Ignition modes
03
85
Ignition modes
Ignition mode 0–The vehicle is unlocked.
Ignition mode I–With the remote key fully pressed into the ignition slot1
, press  START/STOP
ENGINE  briefly.
Ignition mode II–With the remote key fully pressed into the ignition slot 1
, press  START/STOP
ENGINE  for approximately 2 seconds.
Returning to mode 0To return to mode  0 from mode  II or  I, press
START/STOP ENGINE  briefly.
Starting and stopping the engine
See page 116 for information on starting the engine and switching it off.
Emergency towing
See page 290 for important information about the remote key when the vehicle isbeing towed.
1
Not necessary in vehicles with the optional keyless drive. 

03 Your driving environment
 Seats
03
}}
87
Power seat1
Power seat adjustment controls
Front edge of seat cushion up/down
Seat forward/rearward and up/down
Backrest tilt
OperationThe seats can be adjusted for a short period after unlocking the door with the remote con-trol without the key in the ignition slot. Seatadjustment is normally made when the igni-tion is on and can always be made when theengine is running.
NOTE
•
Only one of the power seat's controls can be used at the same time.
• The power seats have an overloadprotector that activates if a seat isblocked by any object. If this occurs,switch off the ignition (key in posi-tion 
0) and wait for a short period
before operating the seat again.
Power seat memory function
Power seat memory buttons
Button for storing a position
Button for storing a position
Button for storing a position
M  (memory) button
Programming the seat's memoryThree different seating and door mirror posi- tions can be stored in the driver seat's mem-ory. The following example explains how button (1) can be programmed. Buttons (2) and (3)are programmed in the same way. To program (store) a seat and door mirror position in button (1): 
1. Move the seat (and door mirrors) to the
desired positions using the seat and mir- ror adjustment controls.
2. Press and hold down the  M (memory)
button (4).
3. With the memory button depressed, press button (1) briefly to store the cur-rent position for the seat/mirrors.
To move the seat and mirrors to the posi-tion that they were in when a button wasprogrammed:
–Press and hold down button (1) until the seat and mirrors stop moving.
1 Optional on certain models   

03 Your driving environment
Seats 
03
88* Option/accessory, for more information, see Introduction.
NOTE
As a safety precaution, the seat will stop automatically if the button is releasedbefore the seat has reached the presetposition.
Remote key memory and the power 
driver's seat* and door mirrors 2
Each remote key has a feature that enables it to store (remember) the position of the powerdriver's seat and door mirrors when the vehi-cle is locked with that remote key. This feature has to be activated 
for each of
the remote keys used in the vehicle  as fol-
lows: 1. Insert a remote key in the ignition slot.
2. Go into the 
MY CAR menu and go to
SettingsCar settingsCar key
memory
3. To activate the remote key memory fea- ture, press  ENTER (check the box).
> The remote key is now ready to store the position of the power driver's seat and door mirrors.
Repeat this procedure for each of the vehi-cle's remote keys. See page 201 for a description of the menu system.
Storing the positions of the power
driver's seat/mirrors in the remote key
1. Move the seat and door mirrors to the desired position using the seat and mirror adjustment controls. 2. Exit the vehicle and lock the doors with
the remote key (or close the driver's doorand press the lock button on the doorhandle with the remote key in your pos-session on vehicles with the optional key-less drive). 
> The positions of the power driver'sseat and door mirrors are now stored in the remote key's memory.
NOTE
The remote key's memory feature and the power driver's seat memory function (thesettings made using the buttons on theside of the seat, see the section "Powerseat memory function" on page 87) workindependently of each other.
Returning the seat/mirrors to the stored positions
To move the seat and door mirrors to the position stored in the remote key: 
1. Unlock the driver's door with the  same
remote key (the one used to lock the doors). For models equipped with theoptional keyless drive, you must have thesame remote key in your possession.
2. Open the driver's door within 2 minutes.
2 This information also applies to vehicles with the optional keyless drive.   

03 Your driving environment
 Seats
03
}}
* Option/accessory, for more information, see Introduction.89
The driver's seat and door mirrors will auto- matically move to the position in which youleft them (if the vehicle has been unlockedwith one of the other keys and new seat/mirror adjustments have been made).
NOTE
•
The seat will move to this position even if someone else has moved it to adifferent position and locked the vehi-cle with a 
different remote key.
• This feature will work in the same waywith all of the remote keys that youuse with your vehicle.
Emergency stop
WARNING
•Because the driver's seat can be adjusted with the ignition off, childrenshould never be left unattended in thevehicle.
• Movement of the seat can be STOP-PED at any time by pressing any but-ton on the power seat control panel.
• Do not adjust the seat while driving.The seat should be adjusted so thatthe brake pedal can be depressedfully. In addition, position the seat asfar rearward as comfort and controlallow.
• The seat rails on the floor must not beobstructed in any way when the seat isin motion.
Heated/ventilated seats*See page 210.
Rear seats
Rear center head restraint   

03 Your driving environment
 Seats
03
91
1. Pull the release control handle(s). 
2. Fold the backrest forward. Adjust the
center seat head restraint if necessary.
NOTE
When the backrests are folded down, move the outboard head restraints forwardslightly so that they do not catch on theseat cushion.
CAUTION
To help avoid damage to the upholstery, there should be no objects on the rear seatand the seat belt should not be buckledwhen the backrest is folded down.
WARNING
•Keep vehicle doors and trunk locked and keep keys out of a child’s reach.Unsupervised children could lockthemselves in an open trunk and riskinjury. Children should be taught not toplay in vehicles.
• On hot days, the temperature in thetrunk or vehicle interior can rise veryquickly. Exposure of people to thesehigh temperatures for even a shortperiod of time can cause heat-relatedinjury or death. Small children are par-ticularly at risk.
WARNING
•When one or more sections of the backrest is returned to the uprightposition, check that it is properlylocked in place by pushing and pullingit.
• Return the outboard head restraints tothe upright position.
• Long loads should always be securelyanchored to help avoid injury in theevent of a sudden stop.
• Always turn the engine off and applythe parking brake when loading/unloading the vehicle.
• Place the transmission in the Park (
P)
position to help prevent inadvertentmovement of the gear selector.
• On hot days, the temperature in thevehicle interior can rise very quickly.Exposure of people to these high tem-peratures for even a short period oftime can cause heat-related injury ordeath. Small children are particularly atrisk. 

03 Your driving environment
Steering wheel 
03
92* Option/accessory, for more information, see Introduction.
Adjusting
G021138
Adjusting the steering wheel
Lever for releasing/locking the steering wheel
Possible positions
The steering wheel can be adjusted for both height and reach: 
1. Pull the lever toward you to release the steering wheel.
2. Adjust the steering wheel to the position that suits you.
3. Push back the lever to lock the steering wheel in place. If the lever is difficult to push into place, press the steering wheellightly at the same time as you push thelever.
WARNING
Never adjust the steering wheel while driv- ing.
With the optional speed-dependent power steering the level of steering force can beadjusted, see page 224.
Keypads and steering wheel paddles*
Steering wheel keypads and paddles*
Cruise control, see page 148. Adaptive cruise control*, see page 150.
Paddles for manually shifting gears (Gear- tronic), see page 123.
Infotainment system controls, see page 233.
Horn
Horn
–Press the steering wheel hub to sound the horn.       

03 Your driving environment
Lighting 
03
100* Option/accessory, for more information, see Introduction.
The lighting in the front part of the passenger compartment is controlled with the buttons(1) and (2) in the roof console. Switch (3) has three positions for all passen- ger compartment lighting:
• Off
: right side depressed, automatic light-
ing off.
• Neutral position
: automatic lighting is
on.
• On
 – left side depressed, passenger
compartment lighting on.
Interior lighting, rear
G021150
Rear reading lights The lights are switched on or off by pressing each respective button.
Courtesy lights/door step lighting*The courtesy lights/door step lighting switchon/off automatically when one of the frontdoors is opened/closed.
Glove compartment lightingThe glove compartment lighting switcheson/off automatically when the lid is opened/closed.
Overhead courtesy lightingThe passenger compartment lighting isswitched on and off automatically when but-ton (3) is in the neutral position. The lighting comes on and remains on for 30 seconds if:
• the vehicle is unlocked from the outside with the key or remote control
• the engine is switched off and the ignitionis in mode 
0.
The lighting switches off when:
• the engine is started
• the vehicle is locked from the outside.
The lighting comes on and remains on for two minutes if one of the doors is open. The passenger compartment lighting can beswitched on and off manually within30 minutes after the vehicle has beenunlocked. If the lighting is switched on manually and the vehicle is locked, the courtesy lighting willswitch off automatically after one minute.
Trunk lightingThe trunk lighting comes on automaticallywhen the trunk lid is opened.
Home safe lighting
When you leave your vehicle at night, you can make use of the home safe lighting functionto illuminate the area in front of the vehicle. 
1. Remove the key from the ignition slot to
put the ignition in mode  0 (see page 85
for information about the ignition modes).
2. Pull the turn signal lever as far as possible towards the steering wheel and release it.
3. Exit the vehicle and lock the doors.The headlights, parking lights, turn signals, lights in the door mirrors, license plate lights,and footwell lighting will illuminate and remain on for 30  4
, 60 or 90 seconds. The time inter-
val can be set in  MY CAR under 
Settings
4
Factory setting  

03 Your driving environment
 Lighting
03
101
Car settingsLight settingsHome safe
light duration. See page 201 for a descrip-
tion of the menu system.
Approach lighting
Approach lighting is activated by pressing the approach light button on the remote key (seethe illustration on page 57). When the function has been activated, the parking lights, indicator lights, door mirrorlights, license plate lighting, dome lightingand door step lighting come on. The time interval for this lighting can be set by pressing  MY CAR and going to 
Car
settings
Light settingsApproach light
duration. See page 201 for a description of
the menu system.