2006 MERCEDES-BENZ R350 key battery

489 Practical hints
Battery
Disconnecting, removing, reinstalling and reconnecting the battery
Warning!
G
Failure to follow these instructions can re-
sult in severe injury or death.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 487).
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 Light
Truck Center.
Contact your authorized
Mercedes-Benz Light Truck 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
Disconnecting, removing, reinstalling and
reconnecting the battery is a complicated
and technically demanding procedure that
also requires safety precautions to avoid the
risk of injury. We strongly recommend that it
be performed by a qualified technician or an
authorized Mercedes-Benz Light Truck
Center only. Please read the instructions
fully before beginning operation and only
undertake it if you feel fully capable of per-
forming all of the tasks involved as de-
scribed in these instructions. Observe all
safety instructions and precautions when
handling automotive batteries
(page 487). Performing the tasks involved
incorrectly can cause damage to the vehicle
and impair the operating safety of the
vehicle, and/or cause severe injury to you
or others.

490 Practical hintsBatteryStep 1 (Disconnecting)

Set the automatic position to P
(page 199).

Firmly depress the parking brake
(page 65).

Turn off the engine (
page 66).

Leave the ignition switched on
(page 38).

Switch off all electrical consumers.

Read and observe safety instructions
and precautions (
page 487).

Open the front passenger door.

Move the front passenger seat to the
most rearward position (
page 43).Step 2 (Disconnecting)
1Seat rail covers, front right
2Seat rail covers, front left

Pull off right seat rail cover 1 in direc-
tion of arrow.

Pull left seat rail cover 2 in direction
of arrow as far as it will go.
Left seat rail cover 2 cannot be re-
moved.
iWith 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 will
have no effect.iIf your battery is discharged, the vehi-
cle must be jump started (
page 496)
using the jump start contacts in the
engine compartment, or an accessory
battery charge unit* approved by
Mercedes-Benz must be connected
using the jump start contacts in the
engine compartment (see separate
instructions for the accessory battery
charge unit*) before any of the follow-
ing steps can be performed. If the bat-
tery cannot be jumped or charged,
please contact an authorized
Mercedes-Benz Light Truck Center.
iOpen doors only when conditions are
safe to do so.

491 Practical hints
Battery
3Battery cover mounting nuts
Using a 6 mm T-handle hex key (not
supplied with vehicle) with a minimum
shaft length of 12 in (30 cm), unfasten
and remove battery cover mounting
nuts 2 located at the floor carpet per-
foration.

Move the front passenger seat to the
most forward position (
page 43).

Switch off the ignition (
page 38).

Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*:
Make sure the vehicle’s on-board
electronics have status 0.
After turning off the engine with the
KEYLESS-GO start/stop button,
with the driver's door closed, the
starter switch is in position1. With
the driver’s door opened, the start-
er switch is set to position0, same
as SmartKey removed from starter
switch (
page 39).Step 3 (Disconnecting)
4Seat rail, rear
5Seat rail cover, rear

Pull seat rail cover 5 away from seat
rail 4 on both sides as indicated by ar-
rows.

Pull off seat rail cover 5 to the rear as
indicated by arrow.

494 Practical hintsBattery
Carry out step 8 to reconnect the bat-
tery (
page 493).

Carry out steps 6 to 1 in reverse order
to complete reinstall the battery,
(page 492) to (
page 490).
Step 11 (Reconnecting)

If the battery has been removed, carry
out step 9 (
page 493) first and then
step 7 (
page 493), both in reverse
order, before starting the connecting
procedure.

Open the driver’s door.

Make sure the SmartKey is removed
from the starter switch.
Vehicles with KEYLESS-GO*:
Make sure the vehicle’s on-board
electronics have status 0.
With the driver’s door opened, the
vehicle’s on-board electronics have
status 0, same as SmartKey re-
moved from the starter switch
(page 39).

Connect the positive lead to the posi-
tive terminal and fasten it’s cover
(page 493).

Connect the negative lead to the nega-
tive terminal (
page 493).
!Never invert the terminal connections!
iThe following procedures must be car-
ried out following any interruption of
battery power (e.g. due to disconnec-
tion):

Set the clock (
page 180).
Vehicles with Modular COMAND
system with navigation module*:
Time and date are set automatical-
ly.


Synchronize the door windows
(page 251).


Synchronize the power tilt/sliding
sunroof* (
page 258).


Synchronize the power tilt/sliding
panel* (
page 262).


Synchronize the power folding
exterior rear view mirrors*
(page 211).


501 Practical hints
Towing the vehicle
Installing towing eye bolts
The front towing eye is located behind a
cover on the passenger side below the
front bumper.
1Towing eye cover
iThe vehicle cannot be started via
tow-start.iIf the battery is disconnected or dis-
charged, the automatic transmission
will remain locked in positionP and the
SmartKey will not turn in the starter
switch. For more information, see “Bat-
tery” (
page 487) and “Jump starting”
(
page 496).
!When towing the vehicle with all wheels
on the ground, note the following:
With the automatic central locking
activated and the ignition in position2
(page 38), the vehicle doors lock if
the left front wheel is turning at a speed
of approx. 9 mph (15 km / h) or above.
To prevent the vehicle doors from
locking, deactivate the automatic
central locking (
page 130).
Switch off the tow-away alarm
(
page 107).
Towing of the vehicle should only be
done using the towing eye. Never
attach tow cable, tow rope or tow rod
to vehicle chassis, frame or suspension
parts.

537 Index
B
Backup lamps
Replacing bulbs 466
Bar 386, 529
BAS 99, 529
Batteries, SmartKey
Check lamp 113, 119
Batteries, vehicle
Messages in display 430
Battery discharged
Jump starting 496
Battery, SmartKey 463
Battery, vehicle 487
Charging 495
Dis-/reconnecting 489
Removing/installing 489
Bead 386, 529
Bi-Xenon* headlamps 529
Replacing bulbs 466
Block heater (Canada only) 391
Blocking
Rear door window operation 93
Bottle opener 300
Brake assist system (BAS) 529
Brake fluid 523
Message in display 432Brake lamps
Replacing bulbs 466
Brake pads
Message in display 430
Brakes 332
Warning lamp 405
Break-in period 330
Bulbs, replacing 465
Additional turn signal lamps 466
Backup lamps 466
Bi-Xenon* headlamps 466
Brake lamps 466
Front fog lamp 471
Front fog lamps* 466
Front lamps 466
Headlamps 466
License plate lamps 466, 474
Parking lamps 466
Rear fog lamps 472
Rear side marker lamp bulbs 472
Sidemarker lamps 466
Standing lamps 466
Tail lamp assemblies 472
Tail lamps 466
Turn signal lamps 466C
CAC (Customer Assistance Center) 529
California
Important notice 11
Call priority
Tele Aid* 318
Calling up
Range (distance to empty) 193
Service indicator 393
CAN system 529
Capacities
Fuels, coolants, lubricants, etc. 521
Card holder 300
Cargo compartment
Extending 283
Fuse box 504
Lamp 157
Tie-down rings 281
Cargo compartment cover blind* 288
Closing 288
Installing 289
Opening 288
Removing 288
Cargo tie-down rings 281
Carpets, cleaning 402

538 IndexCatalytic converter 340
CD player
Operating 171
CD-changer* 294
Center console 29
Lower part 30
PASS AIR BAG OFF indicator
lamp 414
Upper part 29
Central locking
Automatic 130
Switch 131
Switching on/off (control
system) 188
Unlocking from inside 131
Central locking switch 131
Certification label 510
Changing
SmartKey setting 189
Charging
Vehicle battery 495
CHECK ENGINE malfunction indicator
lamp 407, 408Checking
Coolant level 351
Oil level 346
Tire inflate pressure 344
Vehicle lighting 344
Checking tire pressure electronically with
the Advanced Tire Pressure Monitoring
System* (Advanced TPMS*) 371
Checking tire pressure electronically with
the Tire Pressure Monitoring System
(TPMS) 368
Child safety 82
Air bags 72
Infant and child restraint systems 78,
82
LATCH child seat mounts 92
Child safety switch see Blocking of rear
door window operation
Cigarette lighter
Front center console 303
Cigarette lighter* 305Cleaning
Headlamps 208
Headliner 402
Light alloy wheels 401
Plastic and rubber parts 402
Steering wheel 402
Windows 400
Windshield 60
Cleaning tires 355
Climate control 216
Adjusting 222
Adjusting air volume 222
deactivating 220
Front defroster 223
Rear passenger compartment 228
Setting the temperature 222
Clock 180
Closing
Glove box 294
Hood 346
Panorama sliding/pop-up roof 260
Power tilt/sliding sunroof* 462
Side windows 249
Tailgate 124, 128, 129
Tilt/sliding sunroof* 255
Windows 248

544 IndexHeadliner
Cleaning 402
Height adjustment
Head restraints 44
Seat belts 52
Steering wheel 45
High beam flasher 58, 152
High beam headlamps
Messages in display 443
Switching on 151
Hood 345
Closing 346
Message in display 439
Opening 345
Hooks
Loading 282
Hydroplaning 335
I
Identification labels 510
Certification label 510
Vehicle identification number
(VIN) 511
Ignition 38
Switching on 54Immobilizer 104
Activating 104
Deactivating 104
Infant and child restraint systems 82
Installing 90
LATCH child seat mounts 92
Information
About service and warranty 10
Button for Tele Aid* 317
Infrared reflecting windshield* 328
Inside rear view mirror
Antiglare 209
Installing
Front wiper blades 476, 477
Infant and child restraint systems 90
Vehicle battery 489
Instrument cluster 24, 158, 531
Cleaning 401
Illumination 158
Lamps in 409
Outside temperature indicator 159
Selecting language 178
Instruments and controls see CockpitInterior lighting 154
Activating automatic control 155
Deactivating automatic control 155
Delayed switch-off 185
Manual operation 155
Interior rear view mirror
Adjusting 48
Intermittent wiping 60
J
Jump starting 496
K
Key, Mechanical 459
KEYLESS-GO*
Closing tailgate 128, 129
Loss of SmartKey with
KEYLESS-GO* 121
Starting the engine 54
Turning off engine 66
Unlocking and opening, tailgate 120
Unlocking with 37
Kickdown 203, 531
Kilometers/miles in speedometer 178
Kilopascal 386
Kilopascal (kPa) 531
Km/h or mph in speedometer 178