2008 MERCEDES-BENZ R320 brake light

512 Practical hints
Jump starting
The jump-start contacts are located in the
engine compartment.
1Negative (-) terminal
2Positive (+) terminal
3Positive terminal cover
Make sure the two vehicles do not
touch.
Turn off all electrical consumers.
Apply the parking brake (page 65).
Set automatic transmission to
positionP (
page 192).
Open the hood (page 356).
Remove cover from negative
terminal1.
Flip up cover 3 of positive terminal 2
in direction of arrow.
1Negative terminal of discharged
battery
2Positive terminal of discharged battery
4Positive terminal of charged battery
5Negative terminal of charged battery
Connect positive terminals2 and 4
with the jumper cable. Clamp cable to
charged battery 4 first.
Start engine of the vehicle with the
charged battery and run at idle speed.
Connect negative terminals1 and 5
of the batteries with the jumper cable.
Clamp cable to charged battery 5
first.
Start the engine of the disabled vehi-
cle.
You can now turn on the electrical con-
sumers. Do not switch on the headlamps
under any circumstances.
Remove the jumper cables first from
negative terminals1 and 5 and then
from positive terminals2 and 4.
You can now switch on the headlamps.
Have the battery checked at the
nearest authorized Mercedes-Benz
Light Truck Center.
Warning!G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries.
!Never invert the terminal connections!

518 Practical hints
Fuses
The electrical fuses in your vehicle serve to
switch off malfunctioning power circuits.
If a fuse is blown, the components and
systems secured by that fuse will stop
operating.If a newly inserted fuse blows again, have
the cause determined and rectified by an
authorized Mercedes-Benz Light Truck
Center.
A fuse chart explains the fuse allocation
and fuse amperages. It is located in the
cargo compartment with the vehicle tool
kit (
page 469).
The electrical fuses are located in different
fuse boxes:

on the passenger side of the engine
compartment (
page 519)

in the cargo compartment
(
page 519)

in the passenger compartment
(
page 520)Before replacing fuses:
Apply the parking brake (page 65).
Make sure automatic transmission is
set to position P (
page 192).
The gear position indicator in the
multifunction display should be on
P.
Turn off all electrical consumers.
Turn off the engine (page 66).
Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*:
Open the driver’s door (this puts
the starter switch to position0,
same as with the SmartKey re-
moved from starter switch). The
driver’s door can then be closed
again.
Warning!G
Only use fuses approved by Mercedes-Benz
with the specified amperage for the system
in question and do not attempt to repair or
bridge a blown fuse. Using other than
approved fuses or using repaired or bridged
fuses may cause an overload leading to a
fire, and/or cause damage to electrical
components and/or systems. Have the
cause determined and remedied by an
authorized Mercedes-Benz Light Truck
Center
iA blown fuse must be replaced by an appro-
priate spare fuse (recognizable by its color or the
fuse rating given on the fuse) of the amperage
recommended in the fuse chart.
Any Mercedes-Benz Light Truck Center will be
glad to advise you on this subject.

539 Technical data
Fuels, coolants, lubricants, etc.
Brake fluid
Only brake fluid approved by
Mercedes-Benz is recommended. Your
authorized Mercedes-Benz Light Truck
Center will provide you with additional
information.Premium unleaded gasoline
(gasoline engine)
Warning!G
During vehicle operation, the boiling point of
the brake fluid is continuously reduced
through the absorption of moisture from the
atmosphere. Under extremely strenuous
operating conditions, this moisture content
can lead to the formation of bubbles in the
system, thus reducing the system’s
efficiency.
Therefore, the brake fluid must be
replaced regularly. Refer to your vehicle’s
Maintenance Booklet for replacement
interval.
Warning!G
Gasoline is highly flammable and poisonous.
It burns violently and can cause serious
personal injury.
Never allow sparks, flame or smoking mate-
rials near gasoline!
Turn off the engine before refueling.
Whenever you are around gasoline, avoid in-
haling fumes and skin or clothing contact,
extinguish all smoking materials.
Direct skin contact with gasoline and the in-
halation of gasoline vapors are damaging to
your health.
!To maintain the engine’s durability and
performance, premium unleaded gasoline must
be used. If premium unleaded gasoline is not
available and low octane fuel is used, follow
these precautions:

Have the fuel tank only partially filled with
unleaded regular gasoline and fill up with
premium unleaded gasoline as soon as
possible.

Avoid full throttle driving and abrupt acceler-
ation.

Do not exceed an engine speed of 3 000 rpm
if the vehicle is loaded with a light load such
as two persons and no luggage.

Do not exceed2/3of maximum accelerator
pedal position if the vehicle is fully loaded or
operating in mountainous terrain.

547 Index
Bleeding the fuel system (diesel
engine) 502
Bolts, Spare wheel 498
Bottle opener 309
Brake Assist System see BAS
Brake fluid 539
Checking 355
Messages in the multifunction
display 447
Brake lamp
Cleaning lenses 407
Messages in the multifunction
display 455–460
Replacing bulbs 480
Brake pads 340
Messages in the multifunction
display 445
Brakes 340
Warning lamp 415
Break-in the vehicle 338
Bulbs, replacing see Replacing bulbsC
CAC (Customer Assistance Center) 17
California retail buyers and lessees,
Important notice for 11
Call priority, Tele Aid* 328
Can holder see Cup holder
Capacities and recommended
fuel/lubricants 536
Card holder 32, 309
Cargo compartment
Tie-down rings 290
Cargo compartment cover blind 299
Cargo net* 301
Cargo tie-down rings 290
Carpets, Cleaning 411
Catalytic converter (gasoline
engine) 349
CD changer* 167, 304
CD player 167
Center console 31
Central locking 183
Automatic 126
Locking/unlocking from the
inside 126Central locking switch 126
Certification label 524, 525
CHECK ENGINE malfunction indicator
lamp 417, 418
Checking tire pressure electronically
Advanced Tire Pressure Monitoring
System (Advanced TPMS)*, (Canada
only) 379
Tire Pressure Monitoring System
(TPMS), (USA only) 376
Child safety
Infant and child restraint systems 88
Children in the vehicle 87
Air bags 73, 89
Blocking rear door window
operation 97
Indicator lamp, Front passenger front
air bag 81
Infant and child restraint
systems 91, 92
LATCH-type child seat anchors 91
Occupant Classification System
(OCS) 77
Cigarette lighter 313

553 Index
H
Halogen headlamps see Headlamps
Hands-free microphone 33
Hard plastic trim items, cleaning 411
Hazard warning flasher 150
Head restraints
Active head restraint 86, 133
Front seats 45
Rear seats 135, 136
Headlamp cleaning system* 203, 362
Reservoir capacity 538
Headlamp shut-off delay see Delayed
shut-off, Exterior lamps
Headlamps
Automatic headlamp mode 144
Bi-Xenon* 481
Cleaning lenses 407
Cleaning system* 203, 362
Halogen 481
Light sensor, Messages in the
multifunction display 455
Manual headlamp mode 144
Messages in the multifunction
display 455–460
Replacing bulbs 480, 481
Switch 58, 143Headliner, Cleaning 411
Heated seats see Seats
Heated steering wheel* 318
High beam flasher 58, 148
High beam headlamps
Indicator lamp 29
Messages in the multifunction
display 456
Replacing 480
Switching on 58, 147
High mounted brake lamp 481
Hinged quarter windows* see
Power windows
Hood 356
Messages in the multifunction
display 452
Opening 356
Hooks
Loading 291
Horn 25
HVAC see Climate control or
Automatic climate control (3-zone)*
Hydroplaning 344I
Identification label see Labels
Ignition 40, 53, 66
Immobilizer 106
Indicator lamps see Lamps, Indicator and
warning
Infant and child restraint systems see
Children in the vehicle
Inflation pressure see Tires, Inflation
pressure
Information button see Tele Aid*
Infrared reflecting windshield* 336
Inside door handle 118
Instrument cluster 26, 154
Illumination brightness 154
Lamps 414
Messages in the multifunction
display 427–466
Multifunction display 157
Selecting language 174

555 Index
Messages in the multifunction
display 453–454
Opening the power windows
(Summer opening feature) 244
Opening the tilt/sliding panel*
(Summer opening feature) 244
Opening the tilt/sliding sunroof*
(Summer opening feature) 244
Remote control 113
Replacing batteries 479
Selective settings 117
Start/stop button 41
Starter switch positions 39, 41
Starting the engine 54
Turning off engine 66
Unlocking and opening, Power
tailgate* 121
Kickdown 197
Kilopascal 394L
Labels 524
Certification label 524
Emission control information 525
Engine number 525
Paint code 524
Vehicle Identification Number
(VIN) 525
Lamps, exterior 481
Front 481
Light sensor, Messages in the multi-
function display 455
Messages in the multifunction
display 455–460
Rear 481
Lamps, Indicator and warning
ABS 27, 414, 415
Brakes 27, 415
Center console 31, 425
CHECK ENGINE 29, 417, 418
Distance warning lamp* 266
Engine diagnostics 29, 417, 418
ESP
®27, 419
Front passenger front
air bag off 76, 77, 81, 82, 425Fuel reserve 29, 424
High beam headlamps 29
Instrument cluster 26, 414
Parktronic* 283, 284
Preglow indicator, Diesel engine 29
Seat belt telltale 29, 82, 420
Seat heating* 139
Seat ventilation* 140
SRS 29, 70, 85, 424
Turn signals 27
Language, Setting 174
LATCH-type child seat anchors see
Children in the vehicle
Leather upholstery, Cleaning and
care of 412
License plate lamps 481
Messages in the multifunction
display 457
Replacing bulbs 481, 488
Light alloy wheels, Cleaning 410
Light sensor
Messages in the multifunction
display 455
Lighter see Cigarette lighter

558 Index
Odometer 155, 157
Oil level see Engine oil, Checking level
Oil see Engine oil
One-touch gearshifting 201
Operating safety 16
Operator’s Manual 10
Ornamental moldings, Cleaning 407
Outside temperature see Displays
Overdue maintenance service term 401
Overhead control panel 33
Oxidation catalyst (diesel engine) 349
P
Paintwork code 524
Paintwork, Cleaning 404
Panic alarm 98
Panorama roof with power tilt/sliding
panel* 252
Cleaning 410
Convenience closing feature 245
Opening/closing 253
Roller sunblinds 252
Stopping 253
Summer opening feature 244
Synchronizing 255Parcel nets 307
Parking 64, 343
Parking brake 56, 65
Lamps, Indicator and warning 415
Messages in the multifunction
display 446
Releasing 56
Parking lamps 481
Messages in the multifunction
display 458
Replacing bulbs 480
Parktronic* (Parking assist) 281
Cleaning system sensors 408
Minimum distance 283
Range 282
Sensor cover 408
Switching on/off 284
System malfunction 285
System sensors 282
Warning indicators 283
Parts service 522
PASS AIR BAG OFF indicator lamp see
Front passenger front air bag off
indicator lampPassenger compartment 347
Fuse box 520
Interior lighting 150
Passenger safety see Occupant safety
Pedals 339
Permanent four-wheel drive 281
Phone see Telephone*
Plastic and rubber parts, Cleaning 410
Poly-V-belt drive
Layout 526
Positions (Memory function*) see
Seats 142
Power assistance 340
Power outlets 314
Power seats see Seats
Power tilt/sliding sunroof* 248
Convenience closing feature 245
Opening/closing 248
Stopping 245
Summer opening feature 244
Synchronizing 250
Power washer 404