2005 MERCEDES-BENZ E WAGON key battery

107 Controls in detail
Locking and unlocking
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO come
with two SmartKeys with KEYLESS-GO,
each with remote control and a removable
mechanical key. The locking tabs for the
mechanical key portion of the two Smart-
Keys with KEYLESS-GO are a different col-
or to help distinguish each SmartKey with
KEYLESS-GO unit.
The function of the SmartKey overrules the
KEYLESS-GO function.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked every time you pull a door
handle.
If the SmartKey with KEYLESS-GO is valid,
your vehicle unlocks

the doors


the tailgate


the fuel filler flap
SmartKey 1‹ Lock button
2Š Unlock button* for the tailgate
3Mechanical key locking tab
4ΠUnlock button
5Battery check lamp
6Â Panic button (
page 86)
iWhen any outside door handle other
than the driver’s outside door handle is
pulled, the vehicle is centrally un-
locked.
Warning!
G
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO* with you and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. It is possible for children
to open a locked door from the inside, which
could result in an accident and/or serious
personal injury.!To prevent possible malfunction, avoid
exposing the SmartKey with
KEYLESS-GO to high levels of electro-
magnetic radiation.

111 Controls in detail
Locking and unlocking
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey with
KEYLESS-GO so when you pull the driver’s
door handle only the driver’s door and the
fuel filler flap unlocks.
Press and hold buttonsŒ and‹
simultaneously for about five seconds
until battery check lamp5 flashes
twice.
The SmartKey with KEYLESS-GO will
then function as follows:
Unlocking driver’s door and fuel filler
flap

Pull the driver’s outside door handle.

All turn signal lamps flash once.


An acoustic signal sounds once (if
equipped and feature activated).
For more information, see “Factory
setting” (
page 110).


The locking knob in the driver’s
door moves up.


The anti-theft alarm system is dis-
armed.
Global unlocking

Pull any outside door handle other than
the driver’s outside door handle.

All turn signal lamps flash once.


An acoustic signal sounds once (if
equipped and feature activated).


The locking knobs in the doors
move up.


The anti-theft alarm system is dis-
armed.Global locking

Press lock button at outside door
handle (
page 60).


All turn signal lamps flash three
times.


An acoustic signal sounds three
times (if equipped and feature acti-
vated).


The locking knobs in the doors
move down.


The anti-theft alarm system is
armed.
Restoring to factory setting

Press and hold buttonsŒ and‹
simultaneously for about six seconds
until battery check lamp5 flashes
twice.

112 Controls in detailLocking and unlocking
Checking the batteries
Press button‹ orŒ.
Battery check lamp5 comes on brief-
ly to indicate that the SmartKey batter-
ies are in order.Unlocking and opening the tailgate
A minimum height clearance of 6.76 ft
(2.06 m) is required to open the tailgate.
The handle is located in the rear license
plate recess.
You can unlock and open the tailgate sep-
arately.

Pull on the handle.
or

Press and hold buttonŠ until the
tailgate unlocks and opens.
!If you can no longer lock or unlock the
vehicle with the SmartKey with
KEYLESS-GO, then the batteries of the
SmartKey are discharged, or the
SmartKey is malfunctioning or the vehi-
cle battery is drained.

Check the batteries of the
SmartKey with KEYLESS-GO
(page 112) and replace them if
necessary (
page 408).


Use the mechanical key to unlock
the driver’s door (
page 404) as
required.


Have the vehicle batteries and their
connections checked.


Use the mechanical key to lock the
doors (
page 405).
If the SmartKey with KEYLESS-GO is
malfunctioning, contact an authorized
Mercedes-Benz Center.
!If battery check lamp5 does not
come on briefly during check, then the
SmartKey batteries are discharged.
Replace the batteries (
page 408).
You can obtain the required batteries
at any authorized Mercedes-Benz
Center.
iIf the batteries are checked within sig-
nal range of the vehicle, pressing the
button‹ orŒ will lock or unlock
the vehicle accordingly.

147 Controls in detail
Lighting
Interior lighting
1Left front reading lamp on / off
2Rear interior lighting on / off
3Automatic control on / off
4Front interior lighting on / off
5Right front reading lamp on / off
6Ambient lighting
7Interior lighting
8Front reading lampsThe controls are located in the overhead
control panel.
Automatic control
Activating

Press automatic control switch3.
The interior lighting switches on in
darkness when you:

unlock the vehicle


remove the SmartKey from the
starter switch


open a door


open the tailgateThe interior lighting switches off automati-
cally following an adjustable time delay.
For more information, see “Setting interior
lighting delayed shut-off” (
page 173).
Deactivating

Press automatic control switch3
again.
The interior lighting remains switched
off in darkness, even when you:

unlock the vehicle


remove the SmartKey from the
starter switch


open a door


open the tailgate
iLeaving an interior light switch in the
ON position for extended periods of
time with the engine turned off could
result in a discharged battery.
iIf the door remains open, the interior
lighting switches off automatically after
approximately five minutes.

207 Controls in detail
Dual-zone automatic climate control
Residual heat and ventilation*
(available on climate control panel de-sign A only)
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.
Activating
Turn the SmartKey in the starter switch
to position0or1, or remove it from
the starter switch.

Press buttonT (
page 198).
The indicator lamp on button comes
on.Deactivating

Press buttonT (
page 198).
The indicator lamp on button goes out.
The residual heat is automatically turned
off:


when the ignition is switched on


after about 30 minutes


if the battery voltage drops
!If the air conditioning cannot be turned
on again, this indicates that the air con-
ditioning is losing refrigerant. The com-
pressor has turned itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting 1 regardless of the air distribu-
tion control setting.

219 Controls in detail
4-zone automatic climate control*
Residual heat and ventilation (available
on 4-zone automatic climate control panel design A only)
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for up to 30 minutes. This feature makes
use of the residual heat produced by the
engine.
Activating
Turn the SmartKey in the starter switch
to position0 or1, or remove it from
the starter switch.

Press buttonT(
page 210).
REST in the display comes on.
Deactivating

Press buttonT(
page 210).
REST in the display goes out.
The residual heat is automatically turned
off


when the ignition is switched on


after about 30 minutes


if the battery voltage drops
Rear air conditioning
1Left rear center air vent, adjustable
2Right rear center air vent, adjustable
3Thumbwheel for air volume control for
right rear center air vent
4Temperature rocker switch, right
5Display
6Temperature rocker switch, left
7Thumbwheel for air volume control for
left rear center air vent
!If the air conditioning cannot be turned
on again, this indicates that the air con-
ditioning is losing refrigerant. The com-
pressor has turned itself off.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.
iHow long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting 1 regardless of the air distribu-
tion control setting.

384 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
%
Hood open
You are driving with the hood open.

Close the hood (
page 299).
F
Key
Check battery
The SmartKey with KEYLESS-GO* batter-
ies are discharged.

Change the batteries (
page 408).
Key
not recognized
The SmartKey with KEYLESS-GO* is not
recognized while the engine is running
because

the SmartKey with KEYLESS-GO* is
not in the vehicle


there is strong radio-frequency inter-
ference

Stop the vehicle as soon as it is safe
to do so.

Search for the SmartKey.
Otherwise the vehicle cannot be cen-
trally locked nor can the engine be
started again after the engine is
stopped.
Key
not recognized
The SmartKey with KEYLESS-GO* is mo-
mentarily not recognized.

Change the position of the SmartKey
in the vehicle.

Operate the vehicle with the
SmartKey in the starter switch if nec-
essary.
Key
still in vehicle
A SmartKey with KEYLESS-GO* left in the
vehicle was recognized while locking the
vehicle from the outside.

Take the SmartKey out of the vehicle.
Keyless Go
Check system
The KEYLESS-GO* system is malfunction-
ing.

Visit an authorized Mercedes-Benz
Center as soon as possible.

408 Practical hintsReplacing SmartKey batteriesIf the batteries in the SmartKey are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an
authorized Mercedes-Benz Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
SmartKey
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key1
(page 408).
1Mechanical key
2Battery compartment

Insert the mechanical key1 in side
opening and push gray slide.
Battery compartment2 is unlatched.

Pull battery compartment2 out of the
housing in direction of arrow.

Remove the batteries.
Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting the batteries, make
sure they are clean and free of lint.iWhen replacing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz Cen-
ter.