2007 MERCEDES-BENZ S CLASS Trunk battery

615 Practical hints
Unlocking/locking in an emergency
Unlocking the trunk
A minimum height clearance of 5.9 ft.
(1.80 m) is required to open the trunk lid.
1Trunk lid lock
Insert the mechanical key into the
trunk lid lock1 until it stops.

Turn mechanical key all the way to the
left.
The trunk opens.

Turn the mechanical key back and re-
move it from the trunk lid lock.
Locking the vehicle
If you cannot lock the vehicle with the
SmartKey or KEYLESS-GO*, do the follow-
ing:
Close the front passenger door, the
rear right door and the trunk.

Open the driver’s door and the rear left
door.

Press the central locking switch on the
driver’s door (
page 314).
The locking knobs of the front passen-
ger door and the rear doors move
down.
If the vehicle battery is disconnected or
drained:

Press down the locking knobs of
the front passenger door and the
rear doors manually.

Exit the vehicle.

Close the driver’s door.

Enter the vehicle through the rear left
door.

Press down the locking knob of the
driver’s door.

Exit the vehicle.

Close the rear left door.
The vehicle is locked.
!
The trunk lid swings open upwards automat-
ically. Always make sure that there is sufficient
overhead clearance.
!
To prevent inadvertent lockout, make sure
to have the SmartKey or SmartKey with KEY-
LESS-GO* with you before proceeding with the
next step. The next step will lock the vehicle.

634 Practical hintsBatteriesYour vehicle is equipped with two batter-
ies:

The starter battery (located in the en-
gine compartment)


The battery for electrical consumers
(located in the trunk)
The batteries should always be sufficiently
charged in order to achieve its rated ser-
vice life. Refer to Maintenance Booklet for
battery maintenance intervals.
If you use your vehicle mostly for short-dis-
tance trips, you will need to have the bat-
tery charge checked more frequently.
When replacing the batteries, always use
batteries approved by Mercedes-Benz.
If you do not intend to operate your vehicle
for an extended period of time, consult an
authorized Mercedes-Benz Center about
steps you need to observe.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.
!
Do not tow-start the vehicle.
Warning!
G
Observe all safety instructions and precau-
tions when handling automotive batteries.
Risk of explosion.
Fire, open flames and smoking
are prohibited when handling
batteries. Avoid creating sparks.
Battery acid is caustic. Do not
allow it to come into contact
with skin, eyes or clothing.
Wear suitable protective cloth-
ing, especially gloves, apron and
faceguard.
Wear eye protection.
Rinse any acid spills immediate-
ly with clear water. Contact a
physician if necessary.
Keep children away.
Follow the instructions in this
Operator’s Manual.

635 Practical hints
Batteries
!
The consumer battery located in the trunk is
a valve-r
egulated l
ead a
cid (VRLA) battery, also
referred to as “fleece” battery. Such batteries do
not require topping-up of the electrolyte level.
VRLA batteries therefore do not have cell caps
and the battery cover is non-removable. Do not
attempt to open the consumer battery as other-
wise the battery will be damaged.
Even though VRLA batteries do not require top-
ping-up of the electrolyte level and cannot be
opened to check the electrolyte level, the bat-
tery condition must be checked periodically by
performing a battery conductance test. Refer to
Maintenance Booklet for battery condition test-
ing intervals.
As with any other battery, disconnect the con-
sumer battery if you do not intend to operate
your vehicle for an extended period of time to
prevent battery discharge or connect an acces-
sory battery charge unit expressly approved by
Mercedes-Benz for your vehicle model to main-
tain the battery charge. Contact an authorized
Mercedes-Benz Center for further information.
!
The factory-equipped VRLA battery is
leak-proofed. Only use a battery as replacement
that has the same security features and is of
identical size, voltage, and capacity as the facto-
ry-equipped battery.
The battery, the battery ventilation and the later-
al plug must always be securely installed when
the vehicle is in operation.
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
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.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.
Take care that you do not become statically
charged, e.g. by wearing synthetic clothing
or rubbing against textiles. For this reason,
you also should not pull or push the battery
over carpets or other synthetic materials.
Never touch the battery first. First touch the
outside body of the vehicle in order to re-
lease any possible electrostatic charges.


636 Practical hintsBatteries
Starter battery (example illustration from
S550)1Negative terminal
2Positive terminal
Disconnecting starter battery
Do not rub the battery with rags or cloths.
The battery could explode if touched due to
electrostatic charge or due to spark forma-
tion.!
Switch off the engine and switch off the ve-
hicle’s internal electrical functions (
page 637)
before you disconnect or remove the battery’s
terminal clamps. You could otherwise destroy
electronic assemblies such as the generator.
Have the battery checked regularly by an autho-
rized Mercedes-Benz Center. Refer to Mainte-
nance Booklet for maintenance intervals or
contact an authorized Mercedes-Benz Center for
further information.
!
Do not connect any consumers directly to
the starter battery. The starter battery will other-
wise be discharged.
i
Only replace a discharged battery with a bat-
tery recommended by Mercedes-Benz. The con-
sumer battery is installed in the trunk in such a
way that it is safeguarded as much as possible
against mechanical destruction in the event of
an accident.
i
Remove SmartKey from starter switch (vehi-
cles with KEYLESS-GO*: Make sure the vehicle’s
on-board electronics have status 0)
(
page 315) when you turn off the engine and
no longer require any electrical consumers. The
vehicle then uses very little power and the con-
sumer battery is spared.
i
If the consumer battery is discharged, you
must use the mechanical key to unlock the vehi-
cle (page 614). Since the vehicle has a sepa-
rate starter battery, however, you can still start
the vehicle.
!
Always disconnect the starter battery in the
order described below. You could otherwise
damage the vehicle’s electronics.
!
Switch off the vehicle’s internal electrical
functions before disconnecting the starter bat-
tery. If the vehicle is stationary for more than one
hour with the SmartKey removed, you do not
need to switch off the vehicle’s internal electrical
functions.


638 Practical hintsBatteriesStarter battery
Connect the switched-off charging de-
vice to the terminals of the starter bat-
tery. Observe the operating
instructions in the manual for the
charging device while doing so.
Reinstalling starter battery
Install starter battery in engine com-
partment.

Swing retaining bar down.
Reconnecting starter battery

Make sure that the consumer battery in
the trunk is correctly installed and con-
nected.

Turn SmartKey in starter switch to po-
sition 0 and remove.

Connect the positive lead and fasten its
cover2 (
page 636).

Connect negative lead1
(page 636).

Attach ventilation tube.

Switch on the ignition (
page 315).

Start the engine (
page 359).

Check vehicle functions.
!
Only use charging devices with a maximum
charging voltage of 14.8 V.
Warning!
G
During the charge procedure, there is a risk
of acid burns due to gases escaping from
the battery. Do not bend over the battery
during the charge procedure.
!
The battery and the battery ventilation hose
must always be securely installed when the vehi-
cle is in operation.
!
Always connect the starter battery in the or-
der described below. Otherwise, the vehicle’s
electronics could be damaged.
Warning!
G
Do not drive without a properly installed and
connected consumer battery.
Have any work on the consumer battery car-
ried out by an authorized Mercedes-Benz
Center.
!
Never invert the terminal connections.
!
Make sure that the battery has a plug where
the ventilation tube is attached to it.

685 Index
Dynamic Rear View Monitor* 413
Parallel parking 417
Reverse parking (back-in
parking) 415
Switching on 415
View through the camera 413
E
Easy-entry/exit feature 328
COMAND menu 224
EBP 71
ELCODE 672
Electric parking brake 364
Electrical fuses see Fuses
Electrical outlet see Power outlet
Electrical system, Technical Data 659
Electronic Brake Proportioning see EBP
Electronic Stability Program see ESP
®
Emergency call system 462
Emergency calls, Tele Aid 463
Emergency engine shut-down 648
Emergency operation (Limp-Home
Mode) 377
Emergency operations
Locking the vehicle 614
mechanically releasing the parking
brake 616Releasing from inside 440
Remote door lock 469
Remote door unlock 468
Tilt/sliding sunroof or tilt/sliding
panel* 617
Unlocking the trunk 615
Unlocking the vehicle 614
Emergency tensioning device see ETD
Emergency, In case of
Battery, Jump starting 639
First aid kit 611
Flat tire 629
Fuses 645
Instrument cluster, Indicator
lamps 544
Roadside Assistance 16
Roadside Assistance (Tele Aid) 465
Towing the vehicle 642
Emission control 488
Emission control information label 652
Emission control system warranties 14
Engine
Belt layout 653
Cleaning 536
Compartment 492
Coolant 497, 662, 665Malfunction indicator lamp 547
Number 652, 672
Oil 496, 661, 663
Oils 494
Residual heat and ventilation 433
Starting 359
Technical data 654
Turning off 365
Engine coolant see Coolant
Engine oil 494
Adding 496
Additives 663
Checking level 494
Checking level (Dipstick) 495
Checking level (Instrument cluster con-
trol system) 494
Consumption 494
Dipstick 495
Filler neck 496, 497
Messages in display 495, 602
Recommended engine oils and oil
filters 661
Viscosity 672
ESP
®
72
Messages in display 572, 582
Warning lamp 549

688 IndexInfant and child restraint systems see Chil-
dren in the vehicle
Inflation pressure see Tires
Infrared reflecting windshield 475
Inside door handle 312
Instrument cluster 28, 378, 674
Cleaning 541
Coolant temperature gauge 378
Illumination 81, 378
Lamps 544
Multifunction display 241
Outside temperature indicator 379
Selecting the language
(COMAND) 216
Interior lighting 348
Activating automatic control 349
Ambient lighting (COMAND) 225
Deactivating automatic control 349
Delayed switch-off (COMAND) 226
In the rear 350
Reading lamps in the front 349
Reading lamps in the rear 350
Interior rear view mirror
Adjusting 332
Auto-dimming 334Interior storage spaces see Storage com-
partments
J
Jack 612, 630
Jacking up the vehicle 630
Jump starting 639
K
Key, Mechanical 614
Loss of 311
Key, SmartKey 304
Battery check lamp 304, 305
Factory setting 305
Global locking and unlocking 305
Lock button 304
Locking and unlocking 304
Loss of 311
Messages in display 593
Opening button for trunk 304
Panic button 68
Remote control 304
Restoring to factory setting 306
Selective setting 305
Starting the engine 359
Switching on ignition with 315Turning off engine 366
Unlock button 304
Key, SmartKey with KEYLESS-GO* 306
Battery check lamp 306, 310
Closing, Trunk 440
Factory setting 309
Global locking and unlocking 309
Important notes on using
KEYLESS-GO* 308
Lock button 306
Locking and unlocking 306
Locking using the lock button on door
or on trunk lid 310
Loss of 311
Messages in display 592
Opening button for trunk 306
Panic button 68
Remote control 306
Restoring to factory setting 310
Selective setting 310
Starting the engine 360
Switching on ignition with 317
Turning off engine 366
Unlock button 306
Kickdown 373, 674
Kilopascal 527

689 Index
L
Labels 652
Certification 652
Emission control information 652
Supplemental tire inflation pressure
information 489
Tire and Loading Information 504
Vacuum line routing diagram 652
Lamp bulbs, exterior 621
Lamps, exterior
Front 622
Light sensor 596
Rear 622
Lamps, indicator and warning
ABS 29, 69, 544
Air bag Off 49
Battery (SmartKey with
KEYLESS-GO*) 310
Battery check lamp (SmartKey) 305
Brakes 545
DISTRONIC Plus* 29, 388, 397, 549
Engine diagnostics 547
Engine malfunction 547
ESP
®
549
Front passenger front air bag off 53,
555Fuel reserve 550
Instrument cluster 544
Maintenance service indicator 532
Seat belts telltale 550
SRS 552
Language (COMAND) 216
LATCH-type child seat anchors see Chil-
dren in the vehicle
Leather upholstery, Cleaning and care
of 542
Lever
For automatic transmission (gear se-
lector lever) 367
For cruise control 381
For DISTRONIC Plus* 390
License plate lamps
Messages in display 597
Replacing bulbs 622
Light alloy wheels, Cleaning 541
Light sensor
Message in display 596
Lighter see Cigarette lighter
Lighting 342
Automatic headlamp mode 343
Combination switch 346
Corner-illuminating lamps 347Courtesy lighting 350
Daytime running lamp mode 344
Door entry lamps 350
High beam flasher 347
High beams 346
Instrument cluster illumination 81,
378
Interior 348
Manual headlamp mode 343
Trunk 350
Limp-home mode 377
Line of fall 674
Loading see Vehicle loading
Locator lighting (COMAND) 221
Lock button
Door handle (KEYLESS-GO*) 309,
358
Key, SmartKey 304
Key, SmartKey with
KEYLESS-GO* 306
Trunk lid (KEYLESS-GO*) 310
Locking 363
Automatic central locking
(COMAND) 223
Vehicle in an emergency 615
Locking knob 312, 674