Page 81 of 402

03 Instruments and controls
03
}}
* Option/accessory, for more information, see Introduction.79
Front seats – folding backrest* 10
The front passenger's seat backrest can be folded down to make it easier to transportlong objects.
The front passenger seat backrest can be folded to a horizontal position to make roomfor a long load. Fold the backrest as follows:
Move the seat as far back and down as possible.
Adjust the backrest to an upright position.
Lift the catches on the rear of the back- rest.
Without releasing the catches, push the backrest forward. Move the seat as far forward as possible so that the head restraint slides under theglove compartment.
Return the seat to its upright position in thereverse order.
WARNING
• When transporting long objects, cover sharp edges on the load to help pre-vent injury to occupants. Secure theload to help prevent shifting duringsudden stops.
• When the seat's backrest is returnedto the upright position, push and pull itto be sure that it is securely locked inthis position.
Related information
•
Front seats (p. 78)
• Front seats – power seat (p. 79)
• Rear seats – folding backrest (p. 84)
• Rear seats – head restraints (p. 82)
Front seats – power seat 12
The power seat(s) can be adjusted for a short period after unlocking the door with theremote control without the key in the ignitionslot. Seat adjustment is normally made whenthe ignition is on and can always be madewhen the engine is running.
Power seat
Power seat adjustment controls
Front edge of seat cushion up/down
Raise/lower the seat
Seat forward/rearward
Backrest tilt
Electronic lumbar support*
10
The front passenger's seat backrest on models equipped with the optional sport seat cannot be folded down
12 Optional on certain models
Page 82 of 402

||
03 Instruments and controls
03
80* Option/accessory, for more information, see Introduction.
Operation
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.
NOTE
As a safety precaution, the seat will stop automatically if the button is releasedbefore the seat has reached the presetposition.
Heated seats*See Heated seats (p. 127).
Related information
• Front seats (p. 78)
• Rear seats – folding backrest (p. 84)
• Rear seats – head restraints (p. 82)
Page 83 of 402

03 Instruments and controls
03
}}
* Option/accessory, for more information, see Introduction.81
Key memory – power driver's seat* and door mirrors
Each remote key has a memory 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.
Remote key memory and the power
driver's seat* and door mirrors 13
The key memory has to be activated
for each
of the remote keys used in the vehicle as
follows:
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 My Car – introduction (p. 74) 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" in Front seats –power seat (p. 79)) work independently ofeach other.
13This information also applies to vehicles with the optional keyless drive.
Page 84 of 402

||
03 Instruments and controls
03
82
Returning the seat/mirrors to the storedpositions
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. 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.
Related information
•
Remote key – functions (p. 149)
Rear seats – head restraints
The rear seat head restraints can be folded down. The center head restraint can beraised/lowered according to the passenger'sheight.
Rear center head restraint
Page 85 of 402

03 Instruments and controls
03
}}
83
The center head restraint should be adjusted according to the passenger's height. Therestraint should be carefully adjusted to sup-port the occupant's head.
• Pull the head restraint up as required.
• To lower, press and hold the button (located at the center, between the back-rest and the head restraint) while pressingthe head restrain down carefully.
WARNING
The center rear seat head restraint should only be in its lowest position when thisseat is NOT occupied. When the centerposition is occupied, the head restraintshould be correctly adjusted to the pas-senger’s height. The upper edge of thehead restraint should be at least on a levelwith the upper-most point of the seatoccupant's ear.
Manually folding down the rear seat's outboard head restraints
•Pull the handle closest to the head restraint to fold it down.
• To return the head restraint to the uprightposition, push it up until it clicks intoplace.
NOTE
•The head restraint must be returned to the upright position manually.
• The outboard head restraints cannotbe folded down on models that are notequipped with this button.
CAUTION
The rear head restraints should not be kept folded down for prolonged periods.This could result in pressure marks inleather upholstery.
WARNING
For safety reasons, no one should be allowed to sit in the outboard rear seatpositions if the head restraints are foldeddown. If these positions are occupied, thehead restraints should be in the upright(fixed) position.
Automatically folding down the rear seat’s outboard head restraints
1. The ignition must be in mode
II.
2. Press the button to lower the rear head restraints for improved visibility.
Page 86 of 402

||
03 Instruments and controls
03
84
NOTE
•The head restraint must be returned to the upright position manually.
• The outboard head restraints cannotbe folded down on models that are notequipped with this button.
CAUTION
The rear head restraints should not be kept folded down for prolonged periods.This could result in pressure marks inleather upholstery.
WARNING
For safety reasons, no one should be allowed to sit in the outboard rear seatpositions if the head restraints are foldeddown. If these positions are occupied, thehead restraints should be in the upright(fixed) position.
Related information
•
Front seats (p. 78)
• Front seats – power seat (p. 79)
• Rear seats – head restraints (p. 82)
Rear seats – folding backrest
The rear seat head restraints and backrests can be folded down. The center headrestraint can be raised/lowered according tothe passenger's height.
Folding down the rear seat backrestsThe three sections of the rear seat backrestcan be folded down in different combinationsto make it easier to transport long objects.
• The left (driver's side) section can be folded down separately.
• The center section can be folded downseparately.
• The right (passenger's side) section canonly be folded down together with thecenter section.
• All three sections can be folded downtogether.
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.
Release and lower the center head restraint (see Rear seats – head restraints(p. 82)) if the center and/or right section ofthe backrest is to be lowered. The out-board head restraints fold down automat-ically.
Pull up the backrest release control on the respective section(s) (
) and fold the
section(s) down. A red indicator (
)
shows that the backrest is not locked in the upright position.
Page 87 of 402

03 Instruments and controls
03
}}
* Option/accessory, for more information, see Introduction.85
NOTE
It may be necessary to move the front seats forward or put their backrests in amore upright position before folding downthe rear seat backrests.
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. The red indicators should also notbe visible.
• 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.
Related information
•
Front seats (p. 78)
• Front seats – power seat (p. 79)
• Rear seats – head restraints (p. 82)
Steering wheel
The steering wheel can be adjusted to various positions and has controls for the horn, cruisecontrol*, menus, the infotainment system and Bluetooth
®-connected cell phone.
Adjusting
G021138
Adjusting the steering wheel
Lever for releasing/locking the steering wheel
Possible positions
To adjust the steering wheel's 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.
Page 88 of 402

||
03 Instruments and controls
03
86* Option/accessory, for more information, see Introduction.
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 Active chassis* (Four C)(p. 169).
Keypads and steering wheel paddles*
Steering wheel keypads and paddles*
Cruise control, see Cruise control (CC) – introduction (p. 176). Adaptive cruise control*, see Adaptive Cruise Control –introduction (p. 179).
Paddles for manually shifting gears (Gear- tronic), see Transmission – Geartronic(p. 259).
Infotainment system controls, see Sensus Infotainment supplement.
Horn
Horn
–Press the steering wheel hub to sound the horn.
Related information
•
Electrically heated* steering wheel (p. 86)
Electrically heated* steering wheel
The steering wheel can be heated electrically.
Button for steering wheel heating
With the engine running, press this button once to begin warming the steering wheel(press again to switch off). The indicator lightin the button will illuminate when the functionis active. This function can also be started automati- cally (the setting can be activated/deactivatedin the MY CAR menu) if the vehicle is coldand the ambient temperature is belowapproximately 50° F (10° C).