2014 MERCEDES-BENZ B-CLASS SPORTS change key battery

X
To lock centrally: press button001A.
The SmartKe ycentrall yloc ks/unlocks:
R the doors
R the tailgate
R the fuel fille rflap
The tur nsignals flash onc ewhen unlocking
and three times when locking.
i When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer (Y page 204).
i You can also set an audible signal to
confirm that the vehicle has been locked.
The audible signal can be activated and
deactivated using the on-board computer
(Y page 205). Changing the settings of the locking
system
You can change the settings of the locking
system. When you then unlock the vehicle
only the driver's door and the fuel filler flap
are unlocked. This is useful if you frequently
travel on your own.
X To change the setting: press and hold
down the 0009and0010 buttons
simultaneously for approximately six
seconds until the battery check lamp
(Y page 76) flashes twice.
i If the settingoft he locking system is
changed within the signal range of the
vehicle, pressing the 0010or0009 button:
R locks or
R unlocks the vehicle
The SmartKey now functions as follows:
X To unlock the driver's door: press the
0009 button once.
X To unlock centrally: press the0009
button twice.
X To lock centrally: press the0010button.
X To restore the factory settings: press
and hold down the 0009and0010 buttons simultaneously for approximately six
seconds until the battery check lamp
flashes twice (Y
page 76). Mechanical key
General notes If the vehicle can no longer be unlocked with
the SmartKey, use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm
system will be triggered (Y
page 70).
There are several waystot urn off the alarm:
X Press the 0009or0010 button on the
SmartKey.
or
X Insert the SmartKey into the ignition lock.
If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked
automatically.
X To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key X
Push release catch 001Ain the direction of
the arrow and at the same time remove
mechanical key 0010from the SmartKey. SmartKey
75Opening and closing Z

For further information about:
R
unlocking the driver' sdoor(Ypage 81)
R unlocking the cargo compartment
(Y page 82)
R locking the vehicle (Y page 81)SmartKey battery
Importan tsafet ynotes G
WARNING
Batteries contain toxic and corrosive
substances. If batteries are swallowed, it can
result in severe health problems. There is a
risk of fatal injury.
Keep batteries out of the reach of children .If
ab attery is swallowed, seek medical attention
immediately.
The SmartKey batterie scontain perchlorate
material, whic hmay requir especial handling
and regard for the environment. National
guidelines must be observed during disposal.
In California, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Mercedes-Benz recommends that you have
the batteries replaced at aqualified specialist
workshop.
Checking the battery X
Press the 0010or0009 button.
The battery is workin gproperly if battery
chec klamp 001Alight supb riefly. The battery is discharged if battery check
lamp
001Adoes no tlight up briefly.
X Change the battery (Y page 76).
i If the SmartKey battery is checked within
the signal receptio nrang eoft hevehicle,
pressin gthe 0010 or0009 button:
R locks or
R unlock sthe vehicle
i You can get abattery at any qualified
specialist workshop.
Replacin gthe battery You require
aCR20253V cellbattery.
X Tak ethe mechanical ke yout of the
SmartKey (Y page 75). X
Press mechanical key 0010intot he opening
in th eSmartKey in th edirection of the
arrow until battery tray cover 001Aopens.
When doin gso, do no thold cover 001Ashut.
X Remove battery tray cover 001A.76
SmartKeyOpening and closing

Problems with the SmartKey
Problem Possible causes/consequences and
000B Solutions
You cannot lock or
unlock the vehicle
using the SmartKey. The SmartKey battery is discharged or nearly discharged.
X
Try again to lock/unlock the vehicle using the remote control
function of the SmartKey. Point the tip of the SmartKey at the
driver's door handle from close range and press the 0009or
0010 button.
If this does not work:
X Check the SmartKey battery and replace it if necessary
(Y page 76).
X Unlock (Y page 81) or lock (Y page 81) the vehicle using the
mechanical key. There is interference from
apowerful source of radio waves.
X Try again to lock/unlock the vehicle using the remote control
function of the SmartKey. Point the tip of the SmartKey at the
driver's door handle from close range and press the 0009/
0010 button. The SmartKey is faulty.
X
Unlock (Y page 81) or lock (Y page 81) the vehicle using the
mechanical key.
X Have the SmartKey checked at aqualified specialist workshop. You have lost a
SmartKey. X
Have the SmartKey deactivated at aqualified specialist
workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the
mechanical key. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. 78
SmartKeyOpening and closing

Problems with the seat heating
Problem Possible causes/consequences and
000B Solutions
The seat heating has
switched off
prematurely or cannot
be switched on. The on-board voltage is too low because too many electrical
consumers are switched on.
X
Switch off electrical consumers that you do not need, such as
the rear window defroster or interior lighting.
Once the battery is sufficiently charged, the seat heating will
switch back on automatically. Steering wheel
Important safety notes
G
WARNING
You could lose control of your vehicle if you
do the following while driving:
R adjust the driver's seat, head restraint,
steering wheel or mirrors
R fasten the seat belt
There is arisk of an accident.
Adjust the driver's seat, head restraint,
steering wheel and mirror and fasten your
seat belt before startingt he engine.G
WARNING
Children could injure themselves if they
adjust the steering wheel. There is arisk of
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle. Adjusting the steering wheel
G
WARNING
If the steering wheel is unlocked while the
vehicle is in motion, it could change position
unexpectedly. This could cause you to lose
control of the vehicle. There is arisk of an
accident. Before startingo
ff, make sure the steering
wheel is locked. Never unlock the steering
wheel while the vehicle is in motion. 001A
Release lever
0010 To adjust the steering wheel height
0023 To adjust the steering wheel position
(fore-and-aft adjustment)
X Push release lever 001Adown completely.
The steering column is unlocked.
X Adjust the steering wheel to the desired
position.
X Push release lever 001Aup completely.
The steering column is locked.
X Check if the steering column is locked.
When doing so, try to push the steering
wheel up or down or try to move it in the
fore-and-aft direction. 98
Steering wheelSeats, steering wheela
nd mirrors