2015 MERCEDES-BENZ E-CLASS COUPE key battery

B
Back button ....................................... 257
Bag hook ............................................ 269
Ball coupling
Folding in ....................................... 203
Folding in/out ................................ 203
Folding out ..................................... 203
BAS (Brake Assist System) ................. 62
BAS PLUS (Brake Assist System
PLUS) with Cross-Traffic Assist
Function/note s................................ 62
BAS PLUS with Cross-Traffic Assist
(Brake Assist PLUS with Cross-
Traffic Assist)
Important safety notes .................... 63
Battery (key)
Checking .......................................... 77
Important safety notes .................... 77
Replacing ......................................... 77
Battery (vehicle)
Charging ........................................ 304
Display message ............................ 232
Important safety notes .................. 302
Jump starting ................................. 305
Belt
see Seat belts
Belt tensioner
Activation ......................................... 44
Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 215
Display message ............................ 235
Notes/function .............................. 193
Trailer towing ................................. 195
see Active Blind Spot Assist
BlueTEC (AdBlue ®
) ............................. 332
Bluetooth ®
Connecting another mobile
phone ............................................ 260
Searching for a mobile phone ........ 259
See also Digital Owner's Manua l... 256
Telephony ...................................... 259
Bonnet
Active bonnet (pedestrian protec-tion) ............................................... 283
Closing ........................................... 285
Display message ............................ 243 Important safety notes .................. 283
Opening ......................................... 284
Boot
Emergency release .......................... 84
Important safety notes .................... 82
Locking separately ........................... 83
Opening (automatically from
inside) .............................................. 83
Opening/closing (manually from
outside) ............................................ 83
Boot lid
Display message ............................ 243
Opening dimensions ...................... 335
Boot load (maximum) ........................ 335
Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 225
Notes ............................................. 333
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Adaptive ........................................... 66
Display message ............................ 229
Brakes
ABS .................................................. 62
Adaptive Brake Assist ...................... 66
BAS .................................................. 62
BAS PLUS with Cross-Traffic
Assist ............................................... 62
Brake fluid (notes) ......................... 333
Display message ............................ 223
Driving tips .................................... 153
HOLD function ............................... 170
Important safety notes .................. 153
Parking brake ................................ 152
Warning lamp ................................. 248
Breakdown
Where will I find...? ........................ 296
see Flat tyre
Brightness control (instrument
cluster lighting) ................................... 30
Bulbs
see Replacing bulbs Index
5

Setting the dipped-beam head-
lamps for driving on the right/left .. 217
Interior lighting
Automatic control system .............. 110
Delayed switch-off (on-board
computer) ...................................... 218
Overview ........................................ 110
Reading lamp ................................. 110
Setting brightness for display/
switches (on-board computer) ....... 216
Interior motion sensor
Deactivating ..................................... 73
Function ........................................... 72
Priming ............................................ 73
Switching off .................................... 73
iPod ®
See also Digital Owner's Manua l... 256
ISOFIX child seat securing system .... 49J
Jack Storage location ............................ 297
Using ............................................. 322
Jump starting (engine) ...................... 305K
Key Changing the battery ....................... 77
Checking the battery ....................... 77
Convenience opening feature .......... 86
Display message ............................ 245
Door central locking/unlocking ....... 74
Emergency key element ................... 76
Important safety notes .................... 74
Loss ................................................. 79
Modifying the programming ............. 76
Overview .......................................... 74
Positions (ignition lock) ................. 132
Problem (malfunction) ..................... 79
Starting the engine ........................ 134
Key positions
Key ................................................ 132
KEYLESS GO .................................. 132
KEYLESS-GO
Convenience closing ........................ 86
Deactivation ..................................... 75 Display message ............................ 245
Locking ............................................ 75
Removing the Start/Stop button ... 133
Start/Stop button .......................... 132
Starting the engine ........................ 134
Unlocking ......................................... 75
Kickdown
Driving tips .................................... 143
Manual drive progra m.................... 146
Kneebag ............................................... 42 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating ................. 215
Display message ............................ 235
Function/information .................... 195
Lane package ..................................... 193
Lashing eyelets ................................. 269
Licence plate lamp (display mes-
sage) ................................................... 229
Light sensor (display message) ....... 230
Lighting
see Lights
Lights
Activating/deactivating the Intel-
ligent Light System ........................ 217
Activating/deactivating the inte-
rior lighting delayed switch-off ....... 218
Active light function ....................... 109
Adaptive Highbeam Assist PLUS .... 109
Automatic headlamp mode ............ 106
Cornering light function ................. 109
Dipped-beam headlamp s............... 107
Driving abroad ............................... 106
Foglamps (extended range) ........... 109
Hazard warning lamps ................... 108
Headlamp flashe r........................... 108
Light switch ................................... 106
Main-beam headlamp s................... 108
Motorway mode ............................. 109
Parking lamps ................................ 107
Rear foglamp ................................. 107
Setting brightness for display/
switches (on-board computer) ....... 216
Side lamps ..................................... 107 12
Index

X
To lock centrally: press the&button.
The key centrally locks/unlocks: R the doors
R the boot lid
R the fuel filler flap
When unlocking, the turn signals flash once.
When locking, they flash three times.
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated or deactivated using the on-board computer (Y page 219).
When it is dark, the surround lighting also comes
on if it is activated in the on-board computer
(Y page 218). KEYLESS-GO
General notes Bear in mind that the engine can be started by
any of the vehicle occupants if there is a KEY-
LESS-GO key in the vehicle (Y page 134).
Locking and unlocking centrally You can start, lock or unlock the vehicle using
KEYLESS-GO. To do this, you need to carry the
key with you. You can combine the KEYLESS-GO
functions with the functions of a conventional
key. Unlock the vehicle by using KEYLESS-GO,
for instance, and lock it using the &button
on the key.
When locking or unlocking with KEYLESS-GO,
the distance between the key and the corre-
sponding door handle must not be greater than 1 m.
A check which periodically establishes a radio
connection between the vehicle and the key
determines whether a valid key is in the vehicle. This occurs, for example:
R when the external door handles are touched
R when starting the engine
R whilst driving X
To unlock the vehicle: touch the inner sur-
face of the door handle.
X To lock the vehicle: touch sensor sur-
face :.
X Convenience closing feature: touch
recessed sensor surface ;for an extended
period.
For further information on the convenience
closing feature (Y page 86). X
To unlock the boot lid: pull the boot lid han-
dle.
The vehicle only unlocks the boot lid.
Deactivating and activating If you do not intend to use a key for an extended
period of time, you can deactivate the KEYLESS-
GO function of the key. The key will then use very
little power, thereby conserving battery power.
For the purposes of activation or deactivation,
the vehicle does not have to be nearby. Key
75Opening and closing Z

X
To deactivate: press the&button on the
key twice in rapid succession.
The battery indicator light of the key
(Y page 77) flashes twice briefly and lights
up once. KEYLESS-GO is then deactivated.
X To activate: press any button on the key.
or X Insert the key into the ignition lock.
KEYLESS-GO and all of its associated features
are available again. Changing the settings of the locking
system
You can change the settings of the locking sys-
tem. This means that only the driver's door and
the fuel filler flap are unlocked when the vehicle is unlocked. This is useful if you frequently travelon your own.
X To change the setting: simultaneously press
the % and& buttons on the key for
approximately six seconds until the battery
check lamp flashes twice (Y page 77).
If the setting of the locking system is changed
within the signal range of the vehicle, pressing
the & or% button:
R locks or
R unlocks the vehicle
The key now functions as follows:
X To unlock: press the%button once.
X To unlock centrally: press the%button
twice.
X To lock centrally: press the&button.
The KEYLESS-GO function is changed as fol-
lows:
X To unlock the driver's door: touch the inner
surface of the door handle on the driver's
door.
X To unlock centrally: touch the inner surface
of the front-passenger door handle.
X To lock centrally: touch the outer sensor
surface on one of the door handles.
X To restore the factory settings: press and
hold down the %and& buttons simul-
taneously for approximately six seconds until
the battery check lamp flashes twice
(Y page 77). Emergency key element
General notes If the vehicle can no longer be locked or
unlocked with the key, use the emergency key
element.
If you use the emergency key element to unlock
and open the driver's door or the boot lid, the
anti-theft alarm system will be triggered. Switch
off the alarm (Y page 71).
If you unlock the vehicle using the emergency
key element, the fuel filler flap will not be
unlocked automatically.
X To unlock the fuel filler flap: insert the key
into the ignition lock.
Removing the emergency key element X
Push release catch :in the direction of the
arrow and, at the same time, remove emer-
gency key element ;from the key.
Further information about: R Unlocking the driver's door (Y page 82)
R Unlocking the boot (Y page 84)
R Locking the vehicle (Y page 82)
Inserting the emergency key element X
Push emergency key element ;fully into the
key until it engages and release catch :
returns to its basic position. 76
KeyOpening and closing

Battery of the key
Important safety notes G
WARNING
Batteries contain toxic and corrosive substan- ces. 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
a battery is swallowed, seek medical attention immediately. H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them with the household rubbish.
They must be collected sep-
arately and disposed of in anenvironmentally responsible
recycling system. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies.
Mercedes-Benz recommends that you have the
batteries replaced at a qualified specialist work- shop.
Checking the battery X
Press the &or% button.
The battery is OK if battery check lamp :
lights up briefly. The battery is discharged if battery check
lamp
:does not light up briefly.
X Replace the battery (Y page 77).
If the battery of the key is checked within the
signal reception range of the vehicle, pressing
the & or% button:
R locks or
R unlocks the vehicle
i You can obtain a battery from any qualified
specialist workshop.
Replacing the battery You require a CR 2025 3 V cell battery.
X Take the emergency key element out of the
key (Y page 76). X
Press emergency key element ;into the
opening in the key in the direction of the arrow
until battery compartment cover :opens.
When doing so, do not hold battery compart-
ment cover :shut.
X Remove battery compartment cover :. Key
77Opening and closing Z

X
Repeatedly tap the key against your palm until
battery =falls out.
X Insert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth to
do so.
X Make sure that the surface of the battery is
free of lint, grease and other contamination.
X Insert the front tabs of battery compartment
cover :into the housing and then press to
close it.
X Insert emergency key element ;into the key
(Y page 76).
X Check the function of all key buttons on the
vehicle. 78
KeyOpening and closing

Problems with the key
Problem
Possible causes/consequences and
M
MSolutions You can no longer lock or
unlock the vehicle using
the key. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 77) and replace if necessary
(Y page 77).
If this does not work: X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element. The key is faulty.
X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element.
X Have the key checked at a qualified specialist workshop. You can no longer lock or
unlock the vehicle using
KEYLESS-GO. KEYLESS-GO has been deactivated.
X Reactivate KEYLESS-GO (Y page 75). The key battery is discharged or nearly discharged.
X Check the key battery (Y page 77) and replace if necessary
(Y page 77).
If this does not work: X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element. There is a fault with KEYLESS-GO.
X Lock/unlock the vehicle using the remote control function of the
key.
X Have the vehicle and key checked at a qualified specialist work-
shop.
If the vehicle cannot be locked/unlocked even using the remote con-
trol function:
X Unlock (Y page 82) or lock (Y page 82) the vehicle using the
emergency key element.
X Have the vehicle and key checked at a qualified specialist work-
shop. Key
79Opening and closing Z

Problem
Possible causes/consequences and
M
MSolutions The engine cannot be
started using the key. The on-board voltage is too low.
X Switch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
X Check the starter battery and charge it if necessary (Y page 304).
or X Jump-start the vehicle (Y page 305).
or X Consult a qualified specialist workshop. Only for vehicles with
manual transmission:
The engine cannot be
started using the key. The steering lock is mechanically blocked.
X Remove the key and reinsert it into the ignition lock. While doing
this, turn the steering wheel in both directions. The engine cannot be
started using KEYLESS-
GO. The key is in the
vehicle. The vehicle is locked.
X Unlock the vehicle and try to start the vehicle again. There is interference from a powerful source of radio waves.
X Start your vehicle with the key in the ignition lock. You have lost a key. X
Have the key deactivated at a qualified specialist workshop.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. You have lost the emer-
gency key element. X
Report the loss immediately to the vehicle insurers.
X If necessary, have the locks changed as well. Doors
Important safety notes
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get out, e.g. in hazardous situations. There is a
risk of injury.
Therefore, do not leave any people unsuper-
vised in the vehicle, particularly children, eld-
erly people or people in need of special assis-
tance. Do not activate the double lock when
people are in the vehicle. If the vehicle has been locked from the outside,
the double lock function is activated as stand-
ard. It is then not possible to open the doors
from inside the vehicle. You can deactivate the
double lock function by deactivating the interior
motion sensor (Y page 73). The doors can then
be opened from the inside after the vehicle has
been locked from the outside. The anti-theft
alarm system is triggered if the door is opened
from the inside. Switch off the alarm
(Y page 71).
All countries: 80
DoorsOpening and closing