2008 MERCEDES-BENZ R320 instrument cluster

427 Practical hints
What to do if …
Vehicle status messages in the
multifunction display
Warning and malfunction messages
appear in the multifunction display located
in the instrument cluster.
Certain warning and malfunction messag-
es are accompanied by an audible signal.
Address these messages accordingly and
follow the additional instructions given in
this Operator’s Manual.
Selecting the vehicle status message
memory menu in the control system
(
page 169) displays both cleared and
uncleared messages.
High-priority messages appear in the
multifunction display in red color.Certain messages of high priority cannot
be cleared from the multifunction display
using the reset button (
page 154) or
buttonj,k,ÿ, orè on the
multifunction steering wheel.
Other messages of high priority and mes-
sages of less immediate priority can be
cleared from the multifunction display
using the reset button (
page 154) or
buttonj,k,ÿ, orè on the
multifunction steering wheel. They are
then stored in the vehicle status message
memory (
page 169). Remember that
clearing a message will only make the mes-
sage disappear. Clearing a message will
not correct the condition that caused the
message to appear.
Warning!G
All categories of messages contain
important information which should be
taken note of and, where a malfunction is
indicated, addressed as soon as possible at
an authorized Mercedes-Benz Light Truck
Center.
Failure to repair condition noted may cause
damage not covered by the Mercedes-Benz
Limited Warranty, or result in property dam-
age or personal injury.

428 Practical hints
What to do if …
On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may
appear in the multifunction display.
For your convenience the messages are
divided into two sections:

Text messages (page 429)

Symbol messages (page 444)
Warning!G
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see infor-
mation about your driving conditions, such
as speed or outside temperature, warn-
ing/indicator lamps, malfunction/warning
messages or the failure of any systems.
Driving characteristics may be impaired.
If you must continue to drive, do so with
added caution. Contact an authorized
Mercedes-Benz Light Truck Center as soon
as possible.
iSwitching on the ignition causes all
instrument cluster lamps (except high beam
headlamp indicator lamp, and turn signal indica-
tor lamps unless activated) as well as the multi-
function display to come on. Make sure the
lamps and multifunction display are in working
order before starting your journey.

439 Practical hints
What to do if …
Display messagePossible
cause/consequencePossible solution
Monitor the 59indicator lamp on the center console (page 81) and
the multifunction display in the instrument cluster (
page 29) for the following:
With the seat unoccupied and the ignition turned on,

the 59indicator lamp on the center console should illuminate and
remain illuminated, indicating that the OCS (
page 77) has deactivated the air
bag.

the message Front Passenger Airbag Enabled See Operator’s Manual or the
message
Front Passenger Airbag Disabled See Operator’s Manual should
not appear in the multifunction display at any time the seat is unoccupied. Wait
at least 60 seconds for the system to complete the necessary check cycles and
to make sure neither message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again.
Depending on the front passenger classification sensed by the OCS (
page 77),
the 59indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the
system checked as soon as possible by an authorized Mercedes-Benz Light Truck
Center.
Warning!G
If the 59 indicator lamp re-
mains out even after performing the above
corrective steps, do not have any children
12 years old and under and other small individuals use the front passenger seat
until the system has been repaired.

441 Practical hints
What to do if …
Display messagePossible
cause/consequencePossible solution
Monitor the 59indicator lamp on the center console (page 81) and
the multifunction display in the instrument cluster (
page 29) for the following:
With the seat unoccupied and the ignition turned on,

the 59indicator lamp on the center console should illuminate and
remain illuminated, indicating that the OCS (
page 77) has deactivated the air
bag.

the message Front Passenger Airbag Enabled See Operator’s Manual or the
message
Front Passenger Airbag Disabled See Operator’s Manual should
not appear in the multifunction display at any time the seat is unoccupied. Wait
at least 60 seconds for the system to complete the necessary check cycles and
to make sure neither message appears in the multifunction display.
If above conditions are met, you can occupy the front passenger seat again.
Depending on the front passenger classification sensed by the OCS (
page 77),
the 59indicator lamp will remain illuminated or go out.
If above conditions are not met, the system is not working properly. Have the
system checked as soon as possible by an authorized Mercedes-Benz Light Truck
Center.
Warning!G
If the 59indicator lamp re-
mains out even after performing the above
corrective steps, do not have any children
12 years old and under and other small individuals use the front passenger seat
until the system has been repaired.

546 Index
Automatic climate control (3-zone)* 222
Air conditioning, Cooling 233
Air conditioning refrigerant 538
Air distribution 228
Air recirculation mode 231
Air vents, Front 222, 228
Air vents, Rear 236, 239, 240
Air volume 229
Control panel, Front 224
Control panel, Rear 236
Deactivating system 226
Defogging 230
Defrosting 229
Maximum cooling, MAXCOOL 231
Rear passenger compartment 236
Residual heat utilization (REST) 235
Automatic headlamp mode 144
Automatic lighting control, Interior
lighting 151
Automatic locking when driving 126
Automatic shift program 200Automatic transmission 190
Accelerator position 197
Automatic shift program 200
Emergency operation (limp-home
mode) 202
Gear ranges 199
Gear selector lever 53, 190
Gear shifting malfunctions 202
Hill start assist system 198
Kickdown 197
Program mode selector switch 200
Shifting procedure 193
Starting the engine 53
Steering wheel gearshift control 201
Transmission fluid level 360
Transmission positions 194
Automatic transmission fluid see ATF
AUX-socket 304B
Backrest
Seat 44
Seat, Lumbar support 132
Seat, Multicontour* 132
Backup lamps
Messages in the multifunction
display 455–460
Replacing bulbs 480
Bar 394
BAS 101
Lamps in instrument cluster 414
Messages in the multifunction
display 429
Batteries, SmartKey
Check lamp 110, 113
Checking battery condition 118
Batteries, SmartKey with KEYLESS-GO*
Checking battery condition 118
Battery, Vehicle 503
Charging 510
Disconnecting and connecting 505
Jump starting 511
Removing and installing 505
Bead 394
Beverage holder see Cup holder

548 Index
Climate control 208
Air conditioning, Cooling 219
Air conditioning refrigerant 538
Air distribution 213
Air recirculation mode 216
Air vents, Front 208, 214
Air vents, Rear 220
Air volume 214
Control panel, Front 210
Control panel, Rear 220
Deactivating system 212
Defogging 216
Defrosting 214
Rear passenger compartment 220
Residual heat utilization (REST) 219
Clock 26, 176
Cockpit 24
Cold tire inflation pressure 394
Collapsible tire 471, 532
Collapsible wheel chock 471
Combination switch 58, 59, 61, 147
Compass 334
Control system 180Control and operation of radio
transmitters 348
Control system 157
Multifunction display 157
Multifunction steering wheel 158
Resetting to factory default 171
Control system menus 160
AIRMATIC*/Compass 168
AUDIO 165
Distance warning function* 185
Distronic* (Canada only) 168
NAV* 167
Settings 170
Standard display 164
TEL* 187
Trip computer 185
Vehicle status message memory 169
Control system submenus 161, 163
Comfort* 183
Instrument cluster 174
Lighting 177
Time/Date 176
Vehicle 180Coolant 360, 537, 541
Anticorrosion/antifreeze mixing ratio
and quantity 541
Capacities 537
Checking coolant level 360
Messages in the multifunction
display 448–450
Temperature 350
Corner-illuminating front fog lamps* 148
Messages in the multifunction
display 456
Replacing bulbs 480, 481
Cruise control 257
Activating 258
Messages in the multifunction
display 430
Cup holders 308
Front center console 308
Rear center console* 310
Curb weight 394
Customer Assistance Center see CAC

550 Index
Drinking and driving 339
Driving 50
Abroad 348
Hydroplaning 344
In winter 346, 398
Instructions 50, 339
Problems 62
Safety systems 99
Systems 257
Through standing water 347
With Distronic* 273
Driving off 56
Driving safety systems
ABS 99
BAS 101
EBP 105
ESP
®101
ETS/4-ETS 103
Driving systems 257
AIRMATIC* 276
Cruise control 257
Distronic* (Canada only) 262
Parktronic* 281
Rear view camera* 285
Driving tips 197
Kickdown 197E
Easy-entry/exit feature* 128
Control system 184
EBP 105
Indicator and warning lamps 416
Electric air pump 499
Electrical fuses see Fuses
Electrical system, Technical data 533
Electronic Brake Proportioning see EBP
Electronic Stability Program see ESP
®
Electronic Traction System see ETS/4-ETS
Emergency calls
Tele Aid* 323
Emergency, In case of
Battery, Jump starting 511
First aid kit 467
Flat tire 492
Fuses 518
Hazard warning flasher 150
Instrument cluster, Indicator
lamps 414–422
Roadside Assistance 12, 325
Towing the vehicle 513Emergency operation
Locking/unlocking the vehicle 474
Remote door unlock, Tele Aid* 328
Tailgate, Opening from the
inside 120
Emergency operation (Limp-Home
Mode) 202
Emergency tensioning device see ETD
Emission control 350
Information label 525
System warranties 10
Engine
Belt layout 526
Break-in recommendations 338
Cleaning 405
Compartment 356
Malfunction indicator lamp 29, 417
Maximum engine speed 155, 527
Number 525
Starting 53
Tachometer 29, 155
Technical data 527
Turning off 66

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