Unlocking MERCEDES-BENZ R320CDI 2007 R171 Owner's Manual

Contents
Introduction.......................................... 9
Product information ................................ 9
Operator’s Manual ............................... 10
Service and warranty
information .................................... 10
Important notice for California
retail buyers and lessees of
Mercedes-Benz automobiles .......... 11
Maintenance .................................. 12
Roadside Assistance ...................... 12
Change of address or ownership.... 13
Operating your vehicle outside
the USA or Canada......................... 13
Where to find it .................................... 14
Symbols ............................................... 15
Operating safety .................................. 16
Proper use of the vehicle ............... 16
Problems with your vehicle .................. 17
Reporting safety defects...................... 18
Reporting safety defects ................ 18
Vehicle data recording......................... 19
Information regarding electronic
recording devices........................... 19At a glance.......................................... 21
Exterior view ......................................... 22
Cockpit ................................................. 24
Instrument cluster ................................ 26
Multifunction steering wheel ................ 30
Center console ..................................... 31
Upper part ...................................... 31
Lower part ...................................... 32
Overhead control panel ........................ 33
Storage compartments ......................... 34
Door control panel................................ 36Getting started................................... 37
Unlocking ............................................. 38
Unlocking with the SmartKey ......... 38
Unlocking with KEYLESS-GO*......... 39
Starter switch positions .................. 39
Adjusting .............................................. 43
Seats .............................................. 43
Steering wheel ................................ 46
Mirrors ............................................ 48
Driving .................................................. 51
Fastening the seat belts ................. 51
Starting the engine ......................... 54
Parking brake ................................. 57
Driving off ....................................... 58
Switching on headlamps ................. 59
Turn signals .................................... 60
Windshield wipers ........................... 60
Rear window wiper/washer ............ 62
Problems while driving.................... 63
Parking and locking .............................. 65
Parking brake ................................. 66
Switching off headlamps................. 66
Turning off the engine ..................... 67
Releasing seat belts........................ 68
Locking ........................................... 68

Contents
Safety and Security.......................... 71
Occupant safety................................... 72
Air bags .......................................... 74
Seat belts ....................................... 79
Active head restraints .................... 83
Rear head restraints ....................... 84
Children in the vehicle .................... 84
Blocking of rear door window
operation ........................................ 97
Panic alarm .......................................... 99
Activating ....................................... 99
Deactivating ................................... 99
Driving safety systems ....................... 100
ABS .............................................. 100
BAS .............................................. 102
ESP
®............................................. 102
EBP............................................... 105
4-ETS ............................................ 106
Anti-theft systems.............................. 107
Immobilizer................................... 107
Anti-theft alarm system ................ 107
Controls in detail............................. 111
Locking and unlocking ....................... 112
SmartKey ..................................... 112
SmartKey with KEYLESS-GO* ...... 116
Opening the doors from the
inside ........................................... 122
Opening the tailgate ..................... 123
Closing the tailgate ...................... 125
Automatic central locking ............ 130
Locking and unlocking from the
inside ........................................... 130
Seats ................................................. 132
Easy-entry/exit feature ................ 132
Lumbar support............................ 136
Multicontour seat* ....................... 136
Front seat active head
restraints...................................... 137
Rear seats .................................... 137
Seat heating* ............................... 142
Seat ventilation* .......................... 143Memory function* ............................. 144
Storing positions into memory ..... 145
Recalling positions from
memory........................................ 145
Lighting ............................................. 146
Exterior lamp switch .................... 146
Combination switch ..................... 150
Corner-illuminating front
fog lamps* ................................... 151
Hazard warning flasher ................ 152
Interior lighting ............................ 153
Door entry lamps ......................... 155
Cargo compartment lamp ............ 155
Instrument cluster ............................. 156
Adjusting instrument cluster
illumination .................................. 157
Resetting the trip odometer ......... 157
Tachometer .................................. 157
Outside temperature indicator ..... 158

Contents
Oxidation catalyst
(diesel engine).............................. 358
Emission control .......................... 358
Coolant temperature .................... 359
At the gas station .............................. 360
Refueling ...................................... 360
Check regularly and before
a long trip..................................... 362
Engine compartment ......................... 364
Hood ............................................ 364
Engine oil ..................................... 366
Transmission fluid level ................ 370
Coolant level ................................ 370
Windshield/rear window
washer system and headlamp
cleaning* system ......................... 372
Tires and wheels ................................ 373
Important guidelines .................... 373
Tire care and maintenance........... 374
Direction of rotation ..................... 375
Loading the vehicle ...................... 376
Recommended tire inflation
pressure ....................................... 380
Checking tire inflation pressure ... 382
Tire labeling.................................. 391
Load identification ....................... 395DOT, Tire Identification
Number (TIN) ................................ 396
Maximum tire load ........................ 397
Maximum tire inflation pressure ... 398
Uniform Tire Quality Grading
Standards (U.S. vehicles) .............. 398
Tire ply material ............................ 400
Tire and loading terminology......... 401
Rotating tires ................................ 404
Winter driving ..................................... 405
Winter tires ................................... 405
Snow chains.................................. 406
Maintenance....................................... 407
Maintenance service indicator
message ....................................... 407
Calling up the maintenance
service indicator display ............... 409
Resetting the maintenance
service indicator ........................... 409
Vehicle care........................................ 410
Cleaning and care of the vehicle ... 410
Practical hints.................................. 419
What to do if … ................................... 420
Lamps in instrument cluster ......... 420
Lamp in center console ................ 431
Vehicle status messages in the
multifunction display .................... 433
Where will I find ...? ............................ 472
First aid kit.................................... 472
Vehicle tool kit.............................. 472
Spare wheel .................................. 475
Unlocking / locking in an emergency .. 478
Unlocking the vehicle ................... 478
Locking the vehicle ....................... 479
Fuel filler flap ................................ 479
Opening / closing in an emergency..... 481
Power tilt/sliding sunroof* ........... 481
Resetting activated head restraints.... 482
Replacing SmartKey batteries ............ 483
Replacing bulbs .................................. 484
Bulbs............................................. 484
Replacing bulbs for front lamps .... 487
Replacing bulbs for rear lamps ..... 491
Replacing wiper blades ...................... 494
Front wiper blades ........................ 494
Rear wiper blade ........................... 495

23 At a glance
Exterior view
ItemPage
1Tailgate
Opening123
Closing125
Power tailgate*123,
125
Cargo compartment
Vehicle tool kit472
Spare wheel475
2Rear window defroster217
3Rear lamps485
4Fuel filler flap360
Refueling360
Fuel361,
542
5Exterior rear view mirrors
Adjusting49
Auto-dimming rear view
mirrors*213
Power folding*214
ItemPage
6Towing eye bolt
Vehicle tool kit472
Installing517
7Tires and wheels373,
532
Checking tire inflation
pressure382
Run Flat Indicator
(Canada vehicles)383
Tire Pressure Monitoring
System (U.S. vehicles)385
Advanced Tire Pressure
Monitoring System*
(Canada vehicles)388
Flat tire497
Spare wheel475
8Hood364
Engine oil366
Coolant370
ItemPage
9Windshield wipers60
Wiper blades, replacing494
Wiper blades, cleaning415
aWindshield
Cleaning with wiper fluid62
Cleaning415
bPower tilt/sliding sunroof*258
Panorama roof with power
tilt/sliding panel*261
cDoors
Locking and unlocking112
Opening and closing122
Locking/unlocking in an
emergency478
dFront lamps484
eHeadlamp cleaning system*212

36 At a glance
Door control panel
ItemPage
1Inside door handle122
2Central locking/unlocking
switch130
3Exterior rear view mirror
adjustment49
4Selection buttons for
exterior rear view mirror
adjustment
Power-folding exterior rear
view mirrors*49
214
5Switches for
opening/closing front and
rear door windows251
6Rear door window override
switch97
7Hinged quarter window
switch*253
8Remote tailgate release
switch, power tailgate*124,
125

37 Getting started
Unlocking
Adjusting
Driving
Parking and locking

38 Getting started
The “Getting started” section provides an
overview of the vehicle’s most basic func-
tions. First-time Mercedes-Benz owners
should pay special attention to the infor-
mation given here.
If you are already familiar with the basic
functions described here, the “Controls in
detail” section will provide you with further
information. The corresponding page
references are located at the end of each
segment.
Unlocking
Unlocking with the SmartKey
SmartKey
1‹Lock button
2ŠUnlock button* for tailgate
3ŒUnlock button
4ÂPanic button (
page 99)
Press buttonΠon the SmartKey.
All turn signal lamps flash once. The
vehicle unlocks. The locking knobs in
the doors move up. The anti-theft alarm
system is disarmed. The locator light-
ing comes on if the feature is enabled
in the control system (
page 184).
Enter the vehicle and insert the
SmartKey in the starter switch.
For more information, see “Locking and
unlocking” (
page 112).
Warning!G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Unsuper-
vised use of vehicle equipment may cause
an accident and/or serious personal injury.

39 Getting started
Unlocking
Unlocking with KEYLESS-GO*
With the KEYLESS-GO function, you can
lock or unlock the vehicle without using
the remote control buttons on the
SmartKey and start the engine without
inserting the SmartKey into the starter
switch.Grasp an outside door handle or the
tailgate handle.
All turn signal lamps flash once. The
vehicle unlocks. The locking knobs in
the doors move up. The anti-theft alarm
system is disarmed. The locator light-
ing comes on if the feature is enabled
in the control system (
page 184).
Enter the vehicle.
For more information, see “SmartKey with
KEYLESS-GO*” (
page 116).
Starter switch positions
iTo unlock the vehicle, the SmartKey with
KEYLESS-GO must be outside the vehicle, no
further than approximately 3 feet (1 meter) away
from the respective door.
Warning!G
When leaving the vehicle, always take the
SmartKey with KEYLESS-GO* with you, and
lock the vehicle. Do not leave children
unattended in the vehicle, or with access to
an unlocked vehicle. Unsupervised use of
vehicle equipment may cause an accident
and/or serious personal injury.
i If the vehicle has been parked for more than
72 hours, you must pull an outside door handle
in order to activate the KEYLESS-GO function.
Warning!G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you and
lock the vehicle. Do not leave children
unattended in the vehicle, or with access to
an unlocked vehicle. Unsupervised use of
vehicle equipment may cause an accident
and/or serious personal injury.

40 Getting started
Unlocking
SmartKey
Starter switch
0For removing SmartKey
1Power supply for some electrical
consumers, such as seat adjustment
2Ignition (power supply for all electrical
consumers) and driving position
All lamps (except high beam headlamp
indicator lamp and turn signal indicator
lamps unless activated) in the instru-
ment cluster come on. If a lamp in the
instrument cluster fails to come on
when the ignition is switched on, have
it checked and replaced if necessary. If
a lamp in the instrument cluster remains on after starting the engine or
comes on while driving, refer to “Lamps
in instrument cluster” (
page 420).
3Starting position
iWhen you switch on the ignition, the
indicator and warning lamps (except high beam
headlamp indicator lamp and turn signal indica-
tor lamps unless activated) in the instrument
cluster come on. The indicator and warning
lamps (except high beam headlamp indicator
lamp and turn signal indicator lamps if activated)
will go out when the engine is running.
This indicates that the respective systems are
operational.
iWhen the SmartKey is removed from the
starter switch and the automatic transmission is
in a position other thanP, the automatic
transmission automatically shifts toP.
!If the SmartKey cannot be turned in
the starter switch, the battery may not be
sufficiently charged.

Check the battery and charge it if necessary
(
page 506).

Get a jump start (page 514).
To prevent accelerated battery discharge or a
completely discharged battery, always remove
the SmartKey from the starter switch when the
engine is not in operation.

41 Getting started
Unlocking
SmartKey with KEYLESS-GO*
Vehicles equipped with the KEYLESS-GO
feature are supplied with a SmartKey with
integrated KEYLESS-GO function and a
removable KEYLESS-GO start/stop
button.
With the KEYLESS-GO start/stop button
inserted and the SmartKey with
KEYLESS-GO present in the vehicle, press-
ing the KEYLESS-GO start/stop button

without the brake pedal depressed
corresponds to the various starter
switch positions (
page 42)

with the brake pedal firmly depressed
will start the engine (
page 55)
If you wish or should there be a need to
insert the SmartKey with KEYLESS-GO in
the starter switch, the KEYLESS-GO
start/stop button can be easily removed
by pulling it out of the starter switch.1KEYLESS-GO start/stop button
2Starter switch
KEYLESS-GO start/stop button
3USA only
4Canada only
The SmartKey with KEYLESS-GO must be
located in the vehicle.
Insert KEYLESS-GO start/stop
button1 into starter switch 2 (if not
inserted already).
Make sure the automatic transmission
is set toP.
Do not depress the brake pedal.
iThe KEYLESS-GO start/stop button does
not need to be removed from the starter switch
when you leave the vehicle. However, always
take the SmartKey with KEYLESS-GO with you
when you leave the vehicle. As long as the
S m a r t K e y w i t h K E Y L E S S - G O i s i n t h e v e h i c l e , t h e
vehicle’s electrical systems can be switched on
or the engine can be started using the
KEYLESS-GO start/stop button.