2008 MERCEDES-BENZ R320 reset

401 Operation
Maintenance
Clearing the maintenance service
indicator message
The maintenance service indicator mes-
sage is automatically cleared

after approximately 10 seconds when
you switch on the ignition or when
reaching the maintenance service
threshold while driving

after approximately 30 seconds, once
the suggested maintenance service
term has passedYou can also clear it yourself:
1Reset button
Press reset button 1 on the instru-
ment cluster.
The maintenance service indicator
message is cleared and the standard
display appears in the multifunction
display (
page 164).Maintenance service term exceeded
If you have exceeded the suggested main-
tenance service term, you will see the fol-
lowing message in the multifunction
display:
Service A Exceeded By XXXXX Miles (Km)
Service A Exceeded By XXX Days
Service A Exceeded By X Day
In addition, a signal sounds when the
message appears.
Any authorized Mercedes-Benz Light Truck
Center will reset the maintenance service
indicator following a completed mainte-
nance service.

402 Operation
Maintenance
Calling up the maintenance service
indicator display
You can call up the maintenance service
indicator display at any time to check
when the next maintenance service is due.
Switch on the ignition (page 39).
Press button èorÿon the
multifunction steering wheel
repeatedly until the standard display
appears in the multifunction display
(
page 164).
Press button k or j on the
multifunction steering wheel until the
maintenance service indicator display
with the service symbol 9 and the
service deadline appears in the multi-
function display.Resetting the maintenance service
indicator
In the event that the maintenance service
on your vehicle is not carried out by an
authorized Mercedes-Benz Light Truck
Center, you can have the maintenance
service indicator reset. The automotive
maintenance facility carrying out the
maintenance service will find the informa-
tion for resetting the maintenance service
indicator in the maintenance-relevant
literature for your vehicle. Such literature
is available either from either an
authorized Mercedes-Benz Light Truck
Center or directly from Mercedes-Benz.
iThe menu overview can be found on
(
page 160).
iIf the battery is disconnected, the days of
disconnection will not be included in the count
shown by the maintenance service indicator. To
arrive at the true maintenance service deadline,
you will need to subtract these days from the
days shown in the maintenance service indicator
message or maintenance service indicator
display.
!If the maintenance service indicator was
inadvertently reset, have an authorized
Mercedes-Benz Light Truck Center correct it.
Only reset if the proper maintenance service has
been performed. Resetting the system without
performing the proper service as called for by
the maintenance service indicator will result in
engine damage and/or other vehicle damage not
covered by the Mercedes-Benz Limited
Warranty.

413 Practical hints
What to do if …
Where will I find ...?
Unlocking / locking in an
emergency
Resetting activated head restraints
Replacing SmartKey batteries
Replacing bulbs
Replacing wiper blades
Flat tire
Bleeding the fuel system
(diesel engine only)
Battery
Jump starting
Towing the vehicle
Fuses

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.

477 Practical hints
Resetting activated head restraints
Resetting activated head restraints
If the active head restraints have been
triggered in a rear-end collision, the active
head restraints must be reset. Otherwise,
the active head restraints cannot offer
any additional protection in the event of
another rear-end collision.
You can tell that the active head restraints
have been activated when they have been
moved forward and cannot be adjusted.
Vehicles without Rear Seat Entertain-
ment Package*1Pull
2Adjust downward
3Press
Pull the top of the head restraint cush-
ion in direction of arrow 1 as far as it
will go.
Adjust the head restraint cushion
downward in direction of arrow 2 as
far as it will go.
Firmly press the top of the active head
restraint cushion towards the head
restraint cover in direction of arrow 3
until it engages.
Warning!G
For safety reasons, have the active head
restraints checked by an authorized
Mercedes-Benz Light Truck Center after a
rear-end collision.
Warning!G
When pushing back the head restraint
cushion, take care that your fingers do not
become caught between the head restraint
cushion and the cover. Failing to do so may
lead to injury.
!Be careful not to damage upholstery.
iFor your convenience, we recommend that
you have this work carried out by an authorized
Mercedes-Benz Light Truck Center.
iPressing the head restraint cushion back
requires high force. If you encounter difficulties
when pushing the head restraint back, please
have the procedure performed at an authorized
Mercedes-Benz Light Truck Center.


478 Practical hints
Resetting activated head restraints
Repeat this procedure on the active
head restraint for the second front
seat.
For information on active head restraints,
see “Active head restraints” (
page 86).
For information on head restraint adjust-
ment, see “Seats” (
page 128).
Vehicles with Rear Seat Entertainment
Package*
Take the reset tool out of the
Mercedes-Benz vehicle literature
pouch.1Reset tool
2Active head restraint
1Reset tool
2Active head restraint
3Opening
Guide reset tool1 into rectangular
opening 3 of active head restraint2.
Press reset tool1 downward in
direction of arrow until you hear the
head restraint release mechanism
audibly disengage.
Pull out reset tool1.
Firmly press the active head restraint
cushion backward towards the head
restraint cover in direction of arrow
until it engages.
Repeat this procedure on the active
head restraint for the second front
seat.
After resetting the active head
restraints store reset tool1 in the
Mercedes-Benz vehicle literature
pouch.
For information on active head restraints,
see “Active head restraints” (
page 86).
For information on head restraint adjust-
ment, see “Seats” (
page 43).


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

556 Index
Lighting
Parking lamps 143
Lighting, Exterior and interior 143
Limp-home mode 202, 417, 418
Loading see Vehicle loading
Loading terminology 393
Locator lighting 146, 178
Lock buttons, KEYLESS-GO*
Outside door handle 68
Loss of keys, Mechanical key 118
Loss of keys, SmartKey 118
Loss of keys, SmartKey with
KEYLESS-GO* 118
Loss of Service and Warranty Information
Booklet 523
Low beam headlamps
Messages in the multifunction
display 455–460
Replacing bulbs 483
switching on 58, 143
Lubricants 536M
Maintenance 12, 400
Calling up service indicator
display 402
Clearing service indicator
message 401
Maintenance System 400
Resetting service indicator 402
Service indicator message 400
Service term exceeded 401
Manual headlamp mode see Headlamps
Maximum cooling, MAXCOOL see Auto-
matic climate control (3-zone)*
Maximum inflation pressure, Tires 395
Maximum load rating, Tires 395
Maximum loaded vehicle weight,
Tires 395
Mechanical key 474
Memory function* 141Menus see Control system menus
Messages in display see Multifunction dis-
play messages
Microphone, Hands-free 33
Mirrors
Adjusting 48
Auto-dimming* 203
Exterior rear view mirrors 48
Interior rear view mirror 48, 203
Mobile phone see Telephone*
MON 540
Multicontour seats* 132
Multifunction display 157
Changing settings see Control system
menus and Control system
submenus
Selecting language 174
Standard display 161