Page 32 of 174

32n
Central locking system Opening and closing Ð from the outside The conceptThe central locking system is ready for
operation whenever the driver's door is
closed. The system engages and
releases the locks on the
>doors
>luggage compartment lid
>fuel filler door
>glove compartment
>cellular phone holder.
The central locking system can be
operated
>from the outside via the driver's door
lock or by using the remote control
>from the inside by pressing a button.
If you initiate central locking from
inside, neither the fuel filler door, the
glove compartment, nor the cellular
phone holder are locked (refer to
page 36).
If you do set it from outside, the anti-
theft alarm is automatically activated as
well. This prevents the door handles
from unlocking the doors. The alarm
system is also activated or deactivated.
The central locking system unlocks
automatically in the event of an acci-
dent. In addition, the hazard warning
flashers and interior lamps come on.
Using the keySwing the door lock mechanism's cover
upward. Return it to its original position
and allow the detent to engage when
you have finished locking or unlocking
the doors.
Turn the key in the driver's door once to
unlock the driver's door only; turning
the key a second time will unlock the
passenger door, the luggage compart-
ment lid, the fuel filler door, the glove
compartment, and the cellular phone
holder.
If necessary, you can open the fuel filler
door by pressing the button inside the
vehicle; refer to page 25.520de100
You can have various signals set
as an acknowledgment message
when locking.<
Convenience operationYou can also operate the windows via
the door lock.
>To open: with the door closed, turn
the key to the "Unlock" position and
hold it
>To close: with the door closed, turn
the key to the "Lock" position and
hold it.
As the windows are closing you
should always monitor their path
and progress to ensure that no injuries
occur. Release the key to stop the
windows.
Turn the key to the extreme left or right
to unlock/lock the driver's door.
Refer to page 143 for operating the
passenger door.
Page 36 of 174

36n
Opening and closing Ð from the inside Use this button to operate the central
locking system when the doors are
closed. The doors and the luggage
compartment lid are unlocked or locked
only. The anti-theft alarm system is not
activated.
You can also have the key preset
to engage the central locking
system as soon as you start to drive.<520de011
If only the driver's door was
unlocked from the outside and
you press the button,
>the passenger door, the luggage
compartment lid, the fuel filler door,
the glove compartment and the
cellular phone holder will be
unlocked, when the driver's door is
open
>the driver's door will be locked again
if it is closed.<
To unlock and open the doors>Either unlock the doors together with
the button for the central locking
system and then pull each of the
release handles above the armrests
or
>pull the release handle for each door
twice: the first pull unlocks the door,
and the second one opens it.To engage the locks>Lock both doors using the button for
the central locking.
Because passengers or animals
remaining in the vehicle could lock
the doors from the inside, you should
always remove the key and take it with
you to ensure that you remain able to
unlock the vehicle from the outside at
all times.<
Page 142 of 174
142n
Manual release Pull the knob with the fuel pump symbol
(arrow) on the right trim panel of the
luggage compartment. 520de151
Manual release >Tilt the backrest for the passenger's
seat forward and open the storage
compartment located behind it
>Lift the cover off the fuse box
>Pull the ring to release the luggage
compartment lid (arrow 1) or the
cellular phone holder (arrow 2). 520de128
Fuel filler door Luggage compartment lid, storage compartment
Page 167 of 174

Everything from A to Z
167n
IndexDataTechnologyRepairsCar careControlsOverview
Connector for Onboard
Diagnostic126
Consumption display62
Controls16
Convertible top41
closing in event of
electrical
malfunction143t
manual operation143t
Coolant113, 161
Coolant temperature
gauge63
Copyright4
Cornering Brake Control
(CBC)21, 89
Cruise control61
Curb weight160
Current check indicator20DDashboard16
Data
dimensions159
engine158
technical158
weights160
Daytime driving lamps69
DBC (Dynamic Brake
Control)90
Deactivating the tilt alarm
sensor and interior motion
sensor34Deep water87
Defrosting the
windows60, 75
Difficult steering20, 94
Dimensions159
Dipstick111
Disc brakes90
Displacement158
Display lighting69
Displays18
Disposal
engine oil113
used batteries140t
Door keys30
Door warning lamp, bulb
replacement134t
Doors
emergency
actuation32t
mirrors48
remote control33
unlocking and locking32
DOT Quality Grades100
Draft-free ventilation75
Drink holder78, 80
Drive belts162
Driving in winter92
Driving notes87
DSC (Dynamic Stability
Control)22, 65, 152
Dynamic Brake Control
(DBC)90Dynamic Performance
Control66
Dynamic Stability Control
(DSC)22, 65, 152
EElectric defrosting of
mirrors48
Electric power seats45
Electric power windows40
Electrical equipment
failure140t
Electrical failure
convertible top143t
doors32t
fuel filler door142t
luggage
compartment142t
passenger-side
door143t
Electrical system162
Electronic vehicle
immobilizer31
Emergency operation
convertible top143t
doors32t
fuel filler door142t
luggage
compartment142t
passenger-side
door143tEmergency release from
luggage compartment's
interior38
Engine
coolant113, 161
data158
output158
speed158
starting56
switching off57
Engine compartment108
Engine oil111
add111t
consumption111
filling capacity161
filter change161
pressure indicator
lamp20
quality112
specifications112
viscosity112
Engine oil level
check111
Equipment
options and accessories5
Exit lamps, bulb
replacement134
Exterior finish119
Exterior mirrors48
Page 168 of 174

Everything from A to ZFFailure to start146t
Fault in ABS89
Filler cap cover25
Filling capacities161
Filling the washer
reservoir161
First-aid kit24
Fittings, tow-starting and
towing146t
Flashlight79
Flat tire137t
Flat Tire Monitor67
Fog lamp, bulb
replacement133t
"Follow me home"
lamps49, 69
Footbrake90
Footwell lamps71
bulb replacement134t
Front seat adjustment45
Frost protection,
radiator113
Fuel26
gauge62
indicator62
quality26
Fuel filler door
manual release after
electrical fault142tFuel injection system158
Fuel tank capacity161
Fuses140
GGasoline26
quality26
Glove compartment78
bulb replacement135t
Gross vehicle weight160HHand lamp79
Handbrake57
Hands-free system81
Hardtop96
Hazard warning
flashers24t
Hazard warning
triangle24t
Head restraint46
Headlamp covers,
care117t, 131t
Headlamp flasher70
Headlamp washer
system60, 110, 161
Headlamps70
Headlight glare in rearview
mirror48
Heated mirrors48
Heated seats77
Heating and ventilation72Heating, rapid77
Heavy loads83
Height159
High beams23, 58, 70
Holder for beverage
cans80
Hood release105t
Horn17
Hydraulic system88, 92
IIdentification, tires102
Ignition keys30
Ignition lock55
Imprint4
Incoming-air mode74
Indicator lamps20
Inflation pressure26t, 99
monitoring67
INSPECTION63
Instrument cluster18
Instrument panel lighting69
Instruments18
Interaxle tire rotation101
Interface socket for Onboard
Diagnostic126
Interference
cellular phone94
radio reception95
Interior lamps34, 71
bulb replacement135t
remote control34Interior motion sensor39
deactivating34
Interior rearview mirror with
automatic
dimmer48, 154
Intermittent mode of wiper
system59
JJump-starting145KKey Memory49
Key with remote control30
Keys30LLamps and bulbs131t
Leather care122
Length159
License plate lamp, bulb
replacement133t
Light switch69
Light-alloy wheels104
Lighter82
LIGHTS ON warning69
Loading83
Lock deicer92
Louvers72
Low beam headlamps69