2005 MERCEDES-BENZ E320CDI key battery

416 Practical hintsReplacing SmartKey batteries3Battery
4Contact spring
Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.

Return battery compartment into hous-
ing until it locks into place.
SmartKey with KEYLESS-GO*
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key (
page 410).
1Battery
2Tilt battery up
3Mechanical key

Insert the mechanical key3 in side
opening and push grey slide.
Battery compartment is unlatched.

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

Using mechanical key3 apply pres-
sure to position2.
Battery1 tilts up slightly.

Pull out batteries1 in direction of ar-
row.

Using a lint-free cloth, insert new bat-
teries with the plus (+) side facing up.

Return battery compartment into hous-
ing until it locks into place.

434 Practical hintsBatteries
Disconnecting the battery
Depress parking brake firmly or move
gear selector lever to positionP.

Turn off all electrical consumers.

Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO*:
Press the start/stop button until
the engine shuts off.

Open the driver’s door.

Open the trunk.
!Never loosen or detach battery termi-
nal clamps while the engine is running
or the SmartKey is in the starter switch.
Otherwise the alternator and other
electronic components could be se-
verely damaged.
Have the battery checked regularly by
an authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for main-
tenance intervals or contact your au-
thorized Mercedes-Benz Center for
further information.Warning!
G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.
Warning!
G
The SBC brake system requires electrical
power to operate.
A malfunction in the vehicle’s power supply
or electrical system may impair brake sys-
tem operation and switch it into its emer-
gency operation mode. The same applies if
battery is disconnected. To brake, the driver
must then apply significantly greater brake
pedal pressure and depress the pedal much
further to obtain the expected braking ef-
fect. If necessary, apply full pressure to the
brake pedal. Brakes may only be applied to
the front wheels. Stopping distance is in-
creased! Adjust your driving style according-
ly. For more information, refer to “SBC brake
system” (
page 90).
Warning!
G
With a disconnected battery

you will no longer be able to turn the
SmartKey in the starter switch and
pressing the KEYLESS-GO* start/stop
button on the gear selector lever will
have no effect


the gear selector lever will remain
locked in positionP

441 Practical hints
Towing the vehicle
iTo signal turns while being towed with
the hazard warning flasher in use, turn
SmartKey in starter switch to
position2 and activate the combina-
tion switch for the left or right turn sig-
nal in the usual manner – only the
selected turn signal will operate.
Upon canceling the turn signal, the haz-
ard warning flasher will operate again.
!When towing the vehicle with all wheels
on the ground, please note the follow-
ing:
With the automatic central locking acti-
vated and the SmartKey in starter
switch position2, or KEYLESS-GO*
start/stop button in position2, the ve-
hicle doors lock if the left front wheel
as well as the right rear wheel are turn-
ing at vehicle speeds of approximately
9 mph (15 km/h) or more.
Switch off the tow-away alarm
(page 95).
To prevent the vehicle door locks from
locking, deactivate the automatic cen-
tral locking (
page 118).
Towing of the vehicle should only be
done using the properly installed tow-
ing eye bolt. Never attach tow cable,
tow rope or tow rod to the vehicle chas-
sis, frame or suspension parts.
iThe selector lever will remain locked in
positionP and the SmartKey will not
turn in the starter switch if the battery
is disconnected or discharged. For
more information see “Battery”
(page 433) or “Jump starting”
(page 436).
Manual unlocking of the transmission
selector lever (
page 412).

480 IndexBattery discharged
Jump starting 436
Bead 337
Bi-Xenon headlamps* 471
Bleeding the fuel system 432
Block heater* 342
Blocking
Rear window operation 83
Brake assist system (BAS) 471
Brake fluid 301, 382
Brake pads
Message in display 380
Brakes
Warning lamp 358
Break-in period 286Bulbs, replacing
Additional turn signals 417
Fog lamps 417
Front lamps 417, 420
High beam 418
High mounted brake lamp 418
License plate lamps 418, 422
Low beam 418
Parking lamps 418
Side marker lamps 417, 422
Standing lamps 418
Tail lamp 418
Tail lamp assemblies 422
Turn signal lamp 417
C
CAC (Customer Assistance Center) 471
Calling up
Distronic* settings 152
Maintenance service indicator 345
Range (distance to empty) 171
CAN system 471
Cargo tie-down rings 261
CD player
Operating 151Center console
Lower part 28
PASS AIR BAG OFF indicator
lamp 365
Upper part 27
Centigrade
Setting temperature units 157
Central locking
From inside 119
Switch 119
Switching on/off (control
system) 166
Unlocking from inside 119
Central locking switch 119
Changing
Batteries (SmartKey with
KEYLESS-GO*) 415, 416
Batteries (SmartKey) 415, 416
SmartKey setting 167
Vehicle level 249
Charging
Vehicle batteries 435
CHECK ENGINE malfunction indicator
lamp 359, 360

488 IndexInstrument cluster 24, 142, 353, 473
Coolant temperature gauge 143
Illumination 142
Multifunction display 145
Outside temperature indicator 144
Selecting language 158
Integrated remote control
Canadian programming 283
Erasing memory 284
Gate operator 283
Hand-held transmitter 281
Operation 284
Rolling code programming 282
Interior lighting 139
Activating automatic control 139
Delayed switch-off 165
Interior rear view mirror
Adjusting 41J
Jack 407
Jump starting 436
K
Key, Mechanical 410
Key, SmartKey
Changing the batteries 415, 416
Key, SmartKey with KEYLESS-GO*
Changing the batteries 415, 416
KEYLESS-GO* 473
Activating ignition with 36
Closing
Trunk 115, 116
Factory setting 105
Global locking 105
Global unlocking 105
Important notes 104
Remote controls 102
Starting the engine 47
Turning off engine 57
Unlocking and opening, trunk lid 108
Unlocking with 33
Kickdown 180, 473
Kilometers/miles in speedometer 157
Kilopascal 338
Km/h or mph in speedometer 157L
Lamp bulbs, exterior 417
Lamps, exterior
Front 418
Light sensor 394
Messages in display 394
Replacing bulbs for rear 418, 422
Lamps, indicator and warning
ABS 356
Airbag Off 66
Battery (SmartKey) 100, 106
Brakes 358
CHECK ENGINE 359, 360
Coolant 361
DTR* 237
Engine diagnostics 359, 360
ESP 357
Fuel reserve 359, 360
Maintenance service indicator 343
SBC 90
Seat belts 359, 360, 362
SRS 61
Language
Multifunction display 158
Setting 158
LATCH child seat anchors 81

493 Index
Power windows 218
Blocking of rear window operation 83
Convenience closing feature 221
Side windows 218
Summer opening feature 220
Synchronizing 220
Practical hints
First aid kit 407
Jump starting 436
Lamp in center console 365
Lamps in instrument cluster 356
Messages in the display 367
Spare wheel 407
Vehicle tool kit 409
Problems
While driving 53
With vehicle 17
Product information 9
Production options weight 338
Program mode selector switch 474
Automatic transmission 179
PSI 338PTC heating element 475
PULSE function (Massage function) 127
Q
Quick search
Phone book* 173
R
Radio
Selecting stations 150
Selecting stations (satellite*) 151
Radio transmitters, control and
operation 295
Range (distance to empty)
Calling up 171
Rear bench seat
Foldable 257
Rear fog lamp
Switching on 137
Rear lamp bulbs 418
Rear lamps see Tail lamps
Rear passenger compartment
Adjustable air vents 216Rear seat head restraints
Installing 125
Removing 125
Rear view mirrors auto-dimming 186
Rear view mirrors see Mirrors 186
Rear window
Blocking operation 83
Rear window defroster 191
Activating 191
Deactivating 191
Rear window sunshade* 189, 190
Recommended inflation pressure 338
Reconnecting
Vehicle battery 435
Regular checks 301
Reinstalling the battery 435
Remote controls
Integrated 281
SmartKey 98, 102
SmartKey with KEYLESS-GO* 102

496 IndexSettings
Calling up Distronic* 152, 238
Convenience functions 167
Factory, KEYLESS-GO* 105
Factory, SmartKey 99
Individual 168
Lighting (control system) 162
Menus and submenus 147
Resetting all (control system) 154
Resetting in the submenu 155
Selective 100, 106
Settings menu
Functions in 154
Individual vehicle settings 154
Submenus 155
Shift lock 475
Shifting
Gear selector lever positions 178
Into optimal gear range (automatic
transmission) 176
Side impact airbags 66
Side marker lamps 418, 422Side windows
Automatic opening 219
Cleaning 352
Closing 218, 219
Opening 218
Opening fully (Express-open) 219
Stopping 220
Synchronizing power windows 220
Sidewall 338
Simultaneous wiping and washing
Windshield wipers 52
Single wipe 52
Ski sack* 254
Removing 257
Unfolding and loading 254
Unloading and folding 256
Sliding/pop-up roof* 223
Closing 223
Opening 223
Stopping 225, 229
Synchronizing 225
Sliding/pop-up roof* or panorama slid-
ing/pop-up roof*
Emergency operations 414SmartKey 98
Battery check lamp 100, 106
Checking the batteries 101, 107
Factory setting 99
Global locking 100
Global locking and unlocking 99
Global unlocking 99
Locking and unlocking 98
Loss of 102
positions in starter switch 33
Remote controls 98, 102
Restoring to factory setting 100, 106
Selective setting 100, 106
Starting the engine 46, 47
Unlocking with 32
SmartKey with KEYLESS-GO* 102
Global locking and unlocking 105
Loss of 108
Messages in display 391
Remote controls 102
Turning off the engine 57
Unlocking with 33
SmartKey-dependent memory
Settings 168