2006 MERCEDES-BENZ CLS55AMG key battery

409 Practical hints
Replacing SmartKey batteries

Insert the mechanical key1 in direc-
tion of arrow in side opening.

Using mechanical key1 push gray
slide2 to unlatch battery
compartment3.

Pull the battery compartment3 out of
the housing in direction of arrow.
4Battery
5Contact spring

Remove the batteries4 in direction of
arrow.

Using a lint-free cloth, insert new
batteries4 under the contact
spring5 with the plus (+) side facing
up.

Return battery compartment3 into
housing until it locks into place.

Slide mechanical key1 back into the
SmartKey.

Check the operation of the SmartKey.
SmartKey with KEYLESS-GO*
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key (
page 402).

Insert the mechanical key3 in side
opening and push grey slide
(page 408).
Battery compartment is unlatched.

Pull battery compartment out of the
housing in direction of arrow
(page 408).


410 Practical hintsReplacing SmartKey batteries1Battery
2Tilt battery up
3Mechanical key

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

Pull out batteries1 in direction of
arrow.

Using a lint-free cloth, insert new
batteries1 with the plus (+) side fac-
ing up.

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

Slide mechanical key1 back into the
SmartKey.

Check the operation of the SmartKey
and the KEYLESS-GO*.


431 Practical hints
Battery
Battery
Your vehicle is equipped with two batter-
ies:

Auxiliary battery (back-up battery; sta-
bilizes the electrical system if the main
battery is discharged; located in engine
compartment).


Main battery (starter and electrical
consumers; located in the trunk under
the luggage box).

Remove the luggage box (
page 401).
1Positive terminal cover
2Negative terminal
Warning!
G
Jump starting must only be done using the
main battery in the trunk.Warning!
G
Failure to follow these instructions can
result in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 299).
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking etc.!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
authorized Mercedes-Benz Center for
further information.

432 Practical hintsBattery
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.
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 electro-hydraulic 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
“Electro-hydraulic brake system”
(page 89).
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

434 Practical hintsBattery
Charge battery in accordance with the
instructions of the battery charger
manufacturer.

Reinstall the charged battery. Follow
the previously described steps in re-
verse order.
Reconnecting the battery
Turn off all electrical consumers.

Remove the SmartKey from the starter
switch.

Connect the positive lead and fasten its
cover.

Connect the negative lead.

Install the luggage box (
page 401).
Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12 volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
!The battery, its filler caps and the
battery ventilation tube must always be
securely installed when the vehicle is in
operation.
!Never invert the terminal connections!
iThe following procedures must be car-
ried out following any interruption of
battery power (e.g. due to reconnec-
tion):

Set the clock (
page 162)
(see COMAND operator’s manual).


Resynchronize the ESP
®
(
page 368).


Resynchronize the side windows
(page 216).


Resynchronize the tilt/sliding sun-
roof (
page 221).

439 Practical hints
Towing the vehicle
Installing towing eye bolt
Front of vehicle
1Cover on right side of front bumper
To remove cover:
Press mark on cover in direction of ar-
row.

Lift cover off to reveal the threaded
hole for towing eye bolt.
!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 (if
equipped) (
page 95).
To prevent the vehicle door locks from
locking, deactivate the automatic cen-
tral locking (page 122).
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 431) or “Jump starting”
(page 435).
Manual unlocking of the transmission
selector lever (
page 404).


480 IndexAutomatic transmission 176
Accelerator position 180
Emergency operation
(Limp-Home Mode) 190
Gear ranges 181
Gear selector lever position 178
Gear shifting malfunctions 190
Kickdown 180
Kickdown, manual shift program
(CLS 55 AMG) 190
Manual shift program mode
(CLS 55 AMG) 188
Manual shifting 183
One-touch gearshifting 183
Program mode selector switch 182
Selector lever position 176
Starting the engine 49
Winter program mode 182B
BabySmart
TM
Airbag deactivation system 78
Compatible child seats 471
Self-test 79
BabySmart
TM air bag deactivation
system 471
Backrest
Seat, multicontour* 126
Seat, power 40
Backup lamps
Messages in display 387
Bar 332
BAS 86, 472
Batteries, SmartKey
Changing 408
Checking battery condition 102
Batteries, SmartKey with KEYLESS-GO*
Checking 109
Battery
Jump starting 435Battery, vehicle 431
Charging 433
Disconnecting 432
Messages in display 369, 373
Reconnecting 434
Removing 433
Bead 332
Bi-Xenon headlamps* 472
Block heater* (Canada only) 337
Brake assist system (BAS) 472
Brake fluid 291
Messages in display 377
Brake lamp
Messages in display 387
Brake pads
Message in display 374
Brakes
Warning lamp 354
Break-in period 278
Bulbs, replacing see Replacing bulbs

487 Index
L
Labels 446
Lamp bulbs, exterior 411
Lamps, exterior
Front 412
Messages in display 387
Rear 412
Replacing bulbs for rear 416
Lamps, indicator and warning
ABS 352
Air bag Off 69
Battery (SmartKey with
KEYLESS-GO*) 107
Battery (SmartKey) 101
Brakes 354
Coolant 357
DTR* 229, 235
Electro-hydraulic brake system 89
Engine diagnostics 355
ESP
®
353
Fog lamps 137
Front passenger front air bag off 78
Fuel reserve 358
Seat belts 358
SRS 65Language, Setting 160
LATCH child seat anchors 81
Layout of poly-V-belt drive 447
Leather upholstery, Cleaning and
care of 350
License plate lamps 412
Messages in display 388
Replacing bulbs 416
Light alloy wheels, cleaning 348
Lighter see Cigarette lighter 258
Lighting 134
Automatic headlamp mode 135
Combination switch 138
Daytime running lamp mode 136
Door entry lamps 143
Exterior lamp switch 134
Fog lamps 137
Front fog lamps 137
High beams 138
Instrument cluster illumination 144
Interior 141
Locator lighting 136
Low beam 134
Manual headlamp mode 135
Night security illumination 136Parking lamps 134
Rear fog lamp 138
Settings (control system) 164
Trunk lamp 143
Limp-Home Mode 190
Loading 246
Instructions 247
Loading the vehicle 304
Locator lighting 136, 165
Lock button 62, 218
Locking 58, 98
Locking knob 474
Loss of SmartKey with
KEYLESS-GO* 111
Loss of SmartKeys 103
Low beam headlamps 53
Replacing bulbs 414
Switching on 53
Lumbar support 125