Page 407 of 569

406 Operation
Vehicle care
When taking the vehicle through an auto-
matic conveyor type car wash, observe the
following instructions.Vehicles with SmartKey:
With the vehicle at a standstill and the
ignition switched on shift the
automatic transmission to neutral
positionN.
If engaged, release the parking brake
(
page 56).
Switch off the ignition and leave the
SmartKey in the starter switch.
Vehicles with KEYLESS-GO*:
With the vehicle at a standstill, depress
the brake pedal and keep it pressed.
With the ignition switched on shift the
automatic transmission to park
positionP.
Release the brake pedal.
Remove the KEYLESS-GO* start/stop
button from the starter switch
(
page 41).
Insert the SmartKey with
KEYLESS-GO* into the starter switch.
Switch on the ignition.
Depress the brake pedal.
Shift the automatic transmission to
neutral positionN.
Release the brake pedal.
If engaged, release the parking brake
(
page 56).
Switch off the ignition and leave the
SmartKey with KEYLESS-GO* in the
starter switch.
Warning!G
When leaving the SmartKey or SmartKey
with KEYLESS-GO* in the starter switch, do
not leave children unattended in the vehicle.
It is possible for children to switch on the
ignition which could result in unsupervised
use of vehicle equipment.
A child’s unsupervised access to a vehicle
could result in an accident and/or serious
personal injury.
iAfter running the vehicle through an auto-
matic car wash, wipe any wax off of the wind-
shield (
page 409). This will prevent smears
and reduce wiping noise which can be caused by
residual wax on the windshield.
When leaving the car wash, make sure that the
mirrors are folded out. Otherwise they may
vibrate.
Page 461 of 569

460 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
. Turn Signal
Rear LeftThe left rear turn signal lamp is
malfunctioning. A substitute
bulb is being used.Replace the bulb as soon as possible
(
page 480).
Turn Signal
Rear RightThe right rear turn signal lamp is
malfunctioning. A substitute
bulb is being used.Replace the bulb as soon as possible
(
page 480).
Turn Signal
Front LeftThe left front turn signal lamp is
malfunctioning. A substitute
bulb is being used.Replace the bulb as soon as possible
(
page 480).
Turn Signal
Front RightThe right front turn signal lamp is
malfunctioning. A substitute
bulb is being used.Replace the bulb as soon as possible
(
page 480).
Turn Signal
Left MirrorThe turn signal in the left exte-
rior rear view mirror is malfunc-
tioning. This message will only
appear if a critical number of
LEDs have stopped working.Contact an authorized Mercedes-Benz
Light Truck Center as soon as possible.
Turn Signal
Right MirrorThe turn signal in the right exte-
rior rear view mirror is malfunc-
tioning. This message will only
appear if a critical number of
LEDs have stopped working.Contact an authorized Mercedes-Benz
Light Truck Center as soon as possible.
Page 483 of 569

482 Practical hints
Replacing bulbs
Notes on bulb replacement
Only use 12-volt bulbs of the same type
and with the specified watt rating.
Switch the lights off before changing a
bulb to prevent short circuits.
Always use a clean lint-free cloth when
handling bulbs.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not
come on, contact an authorized
Mercedes-Benz Light Truck Center.Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Light Truck Center:
the additional turn signal lamps in the
exterior rear view mirrors
the high mounted brake lamp
the Bi-Xenon* low beam lamps
the Bi-Xenon* high beam flasher spot-
light
the front side marker lamps
Warning!G
Bulbs and bulb sockets can be very hot.
Allow the lamp to cool down before chang-
ing a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.!Do not replace the bulbs yourself. You could
otherwise damage the LEDs or parts of the
vehicle. Only have the LEDs replaced by an
authorized Mercedes-Benz Light Truck Center.
Page 488 of 569

487 Practical hints
Replacing bulbs
Additional turn signal lamps bulbs
The additional turn signal lamps in the
exterior rear view mirrors have LEDs.
If a malfunction occurs or LEDs fail to
function, the entire turn signal unit must
be replaced. Have the turn signal unit re-
placed by an authorized Mercedes-Benz
Light Truck Center.
Front side marker lamp bulbs
Since replacing the side marker lamp bulbs
is a technically highly demanding process,
we recommend you have the side marker
lamp bulbs replaced by an authorized
Mercedes-Benz Light Truck Center.Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following first:
Turn the combination switch to
positionM (
page 143).
Tail lamp unit
Open the tailgate (page 119).Opening the side trim panels
1Lock
2Cover in left side trim panel
1Lock
2Cover in right side trim panel
iTo access the tail lamp units, you have to
remove the cover in the corresponding side trim
panel of the cargo compartment.
Page 511 of 569

510 Practical hints
Battery
Connect the positive lead to the posi-
tive terminal and fasten it’s cover
(
page 509).
Connect the negative lead to the nega-
tive terminal (
page 509).
Charging the battery
If the battery is discharged, the battery can
be charged using the jump-start contacts
located in the engine compartment
(
page 512).
Charge the battery in accordance with
the instructions of the battery charger
manufacturer.
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.
!Never invert the terminal connections!
iThe following procedures must be carried
out following any interruption of battery power
(e.g. due to disconnection):
Set the clock (page 176).
Vehicles with COMAND system with naviga-
tion module*: Time and date are set auto-
matically.
Synchronize the door windows
(
page 244).
Synchronize the power tilt/sliding sunroof*
(
page 250).
Synchronize the power tilt/sliding panel*
(
page 255).
Synchronize the power folding exterior rear
view mirrors* (
page 204).
Warning!G
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the
battery in its installed position. Contact an
authorized Mercedes-Benz Light Truck
Center for information and availability.
Charge battery in accordance with the
separate instructions for the accessory
battery charger.
Page 535 of 569
534 Technical data
Main Dimensions
ModelR 320 CDI 4MATIC
R 3501
R 350 4MATIC
1USA only.
R 550 4MATIC2
2Canada only.
Overall vehicle length203.7 in (5 173 mm)203.7 in (5 173 mm)
Overall vehicle width (exterior mirrors folded out)85.4 in (2 168 mm)85.4 in (2 168 mm)
Overall vehicle width (exterior mirrors folded in)75.7 in (1 922 mm)75.7 in (1 922 mm)
Overall vehicle height3
3Data apply to unladen vehicles with standard equipment. Data may vary in vehicles equipped with AIRMATIC* depending on the
selected damping settings (page 276) and the current vehicle level (page 277).
65.5 in (1 663 mm)65.6 in (1 666 mm)
Wheelbase126.6 in (3 215 mm)126.6 in (3 215 mm)
Track, front64.7 in (1 643 mm)64.7 in (1 643 mm)
Track, rear64.4 in (1 636 mm)64.4 in (1 636 mm)
Ground clearance35.8 in (148 mm)5.9 in (150 mm)
Turning circle40.7 ft (12.4 m)40.7 ft (12.4 m)
Page 546 of 569

545 Index
A
ABS 99
Indicator lamp 414, 415
Messages in the multifunction
display 429
Accelerator position, automatic
transmission 197
Accessory weight 393
Accident 63
Active head restraint 86, 133, 477
Air bags 72
Children 73, 89
Front, Driver 75
Front, Passenger 75
Messages in the multifunction
display 438–441
Occupant Classification System
(OCS) 77
Safety guidelines 74
Side impact 76
Window curtain 76
Air conditioning, Cooling 219, 233
Air conditioning refrigerant 538Air conditioning system see
Climate control or Automatic climate
control (3-zone)*
Air distribution 213, 228
Air pressure see Tire inflation pressure
Air pressure, Tires 393
Air pump, Electric 499
Air recirculation mode 216, 231
Air vents, Front 208, 214, 222, 228
Air vents, Rear 220, 236, 239, 240
Air volume 214, 229
AIRMATIC* 276
Messages in the multifunction
display 464, 465
Alarm system see Anti-theft systems
Alignment bolt (vehicle tool kit) 467, 497
All-wheel drive see Permanent four-wheel
drive 281
Anticorrosion/antifreeze 541, 544
Antiglare, Interior rear view mirror 203
Antiglare, Auto-dimming rear view
mirrors* 203Anti-theft systems 106
Anti-theft alarm system 106
Immobilizer 106
Aquaplaning see Hydroplaning
Arm rests, Second-row 137
Armrest storage compartments
Front 306
Rear* 306
Telephone* tray 306
Ashtrays 311
Aspect ratio 393
ATF 360
AUDIO menu 165
CD operation 167
Radio operation 166
Satellite radio* operation 166
Audio search function 182
Auto-dimming*, Rear view mirrors 203
Automatic antiglare for rear view
mirrors* 203
Automatic central locking, Control
system 183
Page 552 of 569

551 Index
Engine coolant see Coolant
Engine oil 358, 538
Adding 359, 538
Additives 538
Changing 359, 538
Checking level 358
Consumption 358
Filler neck 359
Recommended engine oils and
filters 538
ESP
®101
Messages in the multifunction
display 435–436
Warning lamp 27, 419
ETD 85
Safety guidelines 74
ETS/4-ETS 103
Extending cargo compartment 292
Exterior rear view mirrors 48, 203
Power folding* 204
Synchronizing 204F
Fastening the seat belts 50
Filler neck, Engine oil 359
First aid kit 467
Flat tire 492
Collapsible tire 471, 498, 532
Jacking up the vehicle 493
Lowering the vehicle 501
Mounting the spare wheel 498
Preparing the vehicle 493
Spare wheel 471, 498, 532
Floormats 335
Fluids
Automatic transmission
fluid 360, 536
Brake fluid 355, 536, 539
Capacities 536
Engine coolant 355, 360, 537, 541
Engine oil 358, 536, 538
Power steering fluid 536
Windshield washer and headlamp
cleaning* system 362, 538Fog lamp, Front see Corner-illuminating
front fog lamps*
Fog lamp, Rear 147
Messages in the multifunction
display 458
Replacing bulbs 480
Fog lamps 146
4MATIC see Permanent four-wheel
drive 281
Front air bags 75
Front defroster 214, 229
Front lamps see Headlamps
Front passenger front
air bag 75, 77, 82, 425
Front passenger front air bag
off indicator lamp 31, 75, 77, 82, 425
Front seat head restraints see
Head restraints
Front towing eye 515