Page 12 of 227

10Keys, doors and windowsBatteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
1. Remove the back cover from the remote control.
2. Extract the flat battery from its location.
3. Replace battery with a battery of the same type. Pay attention to
the installation position.
4. Clip the back cover in place.
Fault
If the central locking system cannot
be operated with the radio remote
control, the cause may be one of the
following:
● Fault in radio remote control.● The battery voltage is too low.
● Overload of the central locking system by operating at frequentintervals, the power supply is
interrupted for a short time.
● Interference from higher-power radio waves from other sources.
Manual unlocking 3 11.Electronic key system
Enables, depending on version, a
keyless operation of the following functions:
● central locking system 3 11
● ignition switching on and starting the engine 3 100
The electronic key simply needs to be on the driver's person.
Additionally, the electronic key
includes the functionality of the radio
remote control 3 9.
Handle with care, protect from
moisture and high temperatures and
avoid unnecessary operation.
Page 13 of 227

Keys, doors and windows11Replacing battery in electronic
key
Replace the battery as soon as the
system no longer operates properly or the range is reduced.
In the event of a discharged battery,
C illuminates in the instrument
cluster and a warning message is
displayed in the Driver Information
Centre.
Driver Information Centre 3 75.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
1. Remove the cover.
2. Extract the flat battery from its location.
3. Replace battery with a battery of the same type. Pay attention to
the installation position.
4. Clip the cover in place.
Fault
If the central locking cannot be
operated or the engine cannot be
started, the cause may be one of the
following:
● Fault in electronic key.
● Electronic key is out of reception range.
● The battery voltage is too low.
● Overload of the central locking system by operating at frequent
intervals, the power supply is
interrupted for a short time.
● Interference from higher-power radio waves from other sources.
To rectify the cause of the fault,
change the position of the electronic
key.
Manual unlocking 3 11.
Central locking system Unlocks and locks doors, load
compartment and fuel filler flap.
A pull on an interior door handle
unlocks the respective door. Pulling
the handle once more opens the door.
Notice
In the event of an accident in which
airbags or belt pretensioners are
deployed, the vehicle is
automatically unlocked.
Page 16 of 227
14Keys, doors and windowsConfirmation
Operation of central locking system is confirmed by the hazard warning
flashers. A precondition is that the
setting is activated in the vehicle
personalisation 3 76.
Smart access
With that function a smart phone can be used as an electronic key. The
vehicle is controlled via an
application.
When approaching the vehicle
confirm the message on the smart
phone to open the vehicle.
Central locking button
Locks or unlocks all doors, the load
compartment and fuel filler flap from
inside the passenger compartment.
Press b to lock. The LED in the
button illuminates.
Press b again to unlock. The LED in
the button extinguishes.
Operation with the key in case of
a central locking system fault
In case of a fault, e.g. vehicle battery
or remote control / electronic key
battery is discharged, the front door
can be locked or unlocked with the
mechanical key.
Manual unlocking
Electronic key: push the latch to
extract the integral key.
Page 102 of 227

100Driving and operating9Warning
If the vehicle battery is discharged,
the vehicle must not be towed,
tow-started or jump-started as the
steering wheel lock cannot be
disengaged.
Smart access
This function enables the starting of the vehicle via a mobile device. The
vehicle is controlled via an
application.
After entering into the vehicle and
confirming a message, there are
10 seconds to start the vehicle.
When no message pops up, place the smart phone in the designated area.
Operation on vehicles with
electronic key system in case of
failure
If either the electronic key fails or the battery of the electronic key is weak,
a message may be displayed in the
Driver Information Centre.
Hold the electronic key at the marking on the steering column cover as
shown in the illustration.
On vehicles with manual
transmission, select neutral gear,
operate the clutch pedal, the brake
pedal and press Start/Stop.
On vehicles with automatic
transmission, set the selector lever to position P, operate the brake pedal
and press Start/Stop.
This option is intended for
emergencies only. Replace the
electronic key battery as soon as
possible 3 10.
For unlocking or locking the doors,
see fault in radio remote control unit
or electronic key system 3 11.
Starting the engine
Vehicles with ignition switch
Turn key to position 1 to release the
steering wheel lock.
Manual transmission: operate clutch
and brake pedal.
Automatic transmission: operate
brake pedal and move selector lever
to P or N.
Do not operate accelerator pedal.
Page 112 of 227

110Driving and operatingIn automatic mode, the driving
programme is indicated by D.
In manual mode, M and the number
of the selected gear is indicated.
R indicates reverse gear.
N indicates neutral position.
P indicates park position.
Gear selection
Move the selector lever or press the
respective buttons as shown in the
illustration above.
P:park position, front wheels are
locked, engage only when the
vehicle is stationary and the
parking brake is appliedR:reverse gear, engage only when
the vehicle is stationaryN:neutralD:automatic modeM:manual mode<:upshift in manual mode]:downshift in manual mode
The selector lever is locked in P.
Before unlocking the gearbox, ensure
that the ignition is on. Then, apply the
brake pedal and press UNLOCK.
Now, move the selector lever to the desired mode.
The engine can only be started with
the selector lever in P or N. When
position N is selected, press the brake
pedal or apply the parking brake
before starting.
Before enganing the reverse gear,
come to a total stop. Then, apply the
brake pedal and press UNLOCK.
Now, move the selector lever to R.
Do not accelerate while engaging a
gear. Never depress the accelerator
pedal and brake pedal at the same
time.
When a gear is engaged, the vehicle
slowly begins to creep when the
brake is released.
Engine braking To utilise the engine braking effect,
select a lower gear in good time when
driving downhill.
Manual mode 3 111.
Rocking the vehicle Rocking the vehicle is only
permissible if the vehicle is stuck in
sand, mud or snow. Move the selector
lever between D and R in a repeat
pattern. Do not race the engine and
avoid sudden acceleration.
Parking Apply the parking brake and press P.