trailer MERCEDES-BENZ R320 2010 W251 Owner's Manual

Armrest, rear

Storage compartment .................... 199
Ashtrays ............................................. 204
Aspect ratio (tires) ............................ 249
Audio/DVD menu .............................. 128
Auto-dimming rear view mirrors ........ 94
Automatic central locking ..........74, 137
Automatic headlamp mode ................98
Automatic interior lighting control ..102
Automatic locking when driving ......137
Automatic shift program ..................120
Automatic transmission ................... 115
Automatic shift program ................120
Emergency operation (limp-home
mode) ............................................ 121
Gear range indicator ......................120
Gear ranges ................................... 119
Gear selector lever ........................116
Hill-start assist system .................. 153
Kickdown ....................................... 119
One-touch gearshifting ..................120
Program mode indicator ................120
Program mode selector switch
(automatic shift program) ..............120
Shifting procedure ......................... 118
Steering wheel gearshift control .... 121
Towing a trailer .............................. 119
Transmission position indicator ..... 118
Transmission positions .................. 118
AUX socket ........................................ 198
Axle oils .............................................. 351B
BabySmart™
Air bag deactivation system ............. 45
Self-test

........................................... 47
Backrest
see Seats
Backup lamps
Messages in the multifunction
display ........................................... 295
Bar (air pressure unit) ....................... 249
BAS (Brake Assist System) ................. 64
Batteries, SmartKey
Checking condition ..........................73
Replacing ....................................... 310Battery, Vehicle
................................. 333
Charging ........................................ 335
Jump starting ................................. 336
Messages in the multifunction
display

................................... 282, 292
Bead (tire) .......................................... 249
Beverage holders see Cup holders
Bleeding the fuel system (diesel
engine) ............................................... 331
BlueTEC
AdBlue ®
tank ................................. 331
AdBlue ®
tank capacity ................... 351
Brake fluid
Checking level ............................... 227
Messages in the multifunction
display ........................................... 286
Brake lamps
Cleaning lenses ............................. 265
Brake pads
Messages in the multifunction
display ........................................... 285
Brakes ................................................ 253
Parking brake ........................ 114, 255
Warning lamp ................................. 301
Break-in period .................................. 220
Bug cover (Radiator) ......................... 224
Bulbs see Replacing bulbs C
CAC (Customer Assistance Center) ...23
California retail buyers and
lessees, important notice for .............21
Calls (phone) ...................................... 140
Can holders see Cup holders


Capacities and recommended
fuel/lubricants .................................. 350
Cargo compartment
Cargo net ....................................... 196
Cargo volume, expanding ..............189
Cover blind .................................... 194
Fuse box ........................................ 342
Hooks ............................................ 189
Tie-down rings ............................... 188
Cargo compartment cover blind ...... 194 Index
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Driving off
.................................. 112, 255
Driving safety systems ....................... 63
4-ETS
............................................... 65
ABS .................................................. 63
BAS .................................................. 64
EBP .................................................. 64
ESP ®
................................................ 65
Driving systems
AIRMATIC ...................................... 153
All-wheel drive (4MATIC) ................ 156
Cruise control ................................ 142
Distronic ........................................ 145
Hill-start assist system .................. 153
Parktronic system ..........................156
Rear view camera .......................... 159
Driving tips, automatic
transmission ...................................... 119E
Easy-entry/exit feature .............. 92, 137
EBP (Electronic Brake
Proportioning) ......................................

64
Electrical system
Improper work on or
modifications ................................... 22
Power outlets ................................. 206
Electrical system (Technical data)
see Vehicle specification
Electronic Stability Program
see ESP ®

Electronic Traction System
see 4-ETS
Emergency, in case of
First aid kit ..................................... 270
Flat tire .......................................... 319
Hazard warning flasher ..................101
Roadside Assistance ................ 21, 210
Towing the vehicle .........................338
Emergency calls
Tele Aid .......................................... 209
Emergency engine shutdown ...........342
Emergency operations
Limp-home mode ........................... 121
Remote door unlock ...................... 212
Emergency Tensioning Device
see ETD Emission control
............................... 260
Information label ............................
345
System warranties ........................... 20
Engine
Break-in recommendations ............220
Cleaning ......................................... 264
Compartment ................................ 222
Malfunction indicator
lamp ........................................ 29, 305
Messages in the multifunction
display ........................................... 290
Number .......................................... 345
Starting .......................................... 110
Turning off ..................................... 114
Engine (Technical data)
see Vehicle specification
Engine compartment
Radiator ......................................... 224
Engine coolant
see Coolant
Engine oil
Adding ........................................... 225
Additives ........................................ 352
Checking level ............................... 224
Consumption ................................. 224
Messages in the multifunction
display ........................................... 293
Oil dipstick ..................................... 224
Recommended engine oils and oil
filter ............................................... 352
ESP ®
(Electronic Stability
Program) .............................................. 65
4-ETS ............................................... 65
Messages in the multifunction
display ................................... 275, 286
Trailer stabilization ........................... 66
Warning lamp ................................. 303
ETD (Emergency Tensioning
Device) ................................................. 52
Safety guidelines ............................. 39
Express operation
Panorama roof ............................... 184
Power windows .............................. 106
Tilt/sliding sunroof ........................181
Exterior lamp switch ........................... 97
Exterior rear view mirrors ..................94
Fold-in function .............................. 1388
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Parking position ...............................
95
Power folding ................................... 95
Exterior view of vehicle ......................26 F
Fastening the seat belts .....................49
First aid kit .........................................
270
Flat tire ............................................... 319
Lowering the vehicle ......................329
Mounting the spare wheel ............. 324
Preparing the vehicle .....................320
Spare wheel ........................... 319, 350
TIREFIT (tire repair kit) ................... 320
Floormats ........................................... 217
Fluids
AdBlue ®
......................................... 351
Automatic transmission fluid ......... 350
Brake fluid ..................................... 351
Capacities ...................................... 350
Engine coolant ............................... 351
Engine oil ....................................... 350
Power steering fluid ....................... 351
Washer and headlamp cleaning
system ........................................... 351
Fog lamps ............................................. 99
Messages in the multifunction
display ................................... 295, 296
Fold-in function for exterior rear
view mirrors ...................................... 138
Four-wheel drive see All-wheel drive (4MATIC)
Front air bags
see Air bags
Front axle oil ...................................... 351
Front lamps see Headlamps
Front passenger front air bag ............ 40
Messages in the multifunction
display ........................................... 277
Front passenger front air bag off
indicator lamp (Canada only) ..... 45, 307
Front passenger front air bag off
indicator lamp (USA only) ..........42, 307
Front seat head restraints see Head restraints
Fuel ............................................. 220, 353
Additives ........................................ 354Capacity, fuel tank .........................
351
Diesel fuel
............................. 351, 353
Drive sensibly–safe fuel .................253
Fuel consumption statistics ...........139
Fuel filler flap and cap ................... 221
Fuel tank reserve warning
lamp ........................................ 29, 305
Premium unleaded gasoline ... 351, 353
Refueling ........................................ 220
Requirements ................................ 353
Fuel filler flap ..................................... 221
Opening manually ..........................309
Fuels, coolants, lubricants etc.
Capacities ...................................... 350
Fuel system, bleeding (diesel
engine) ............................................... 331
Fuel tank Capacity ........................................ 351
Fuel filler flap and cap ................... 221
Refueling ........................................ 220
Fuses .................................................. 340 G
Garage door opener .................... 32, 213
Gasoline see Fuel


GAWR (Gross Axle Weight Rating) ...249
Gear range ......................................... 119
Indicator ........................................ 120
Limiting .......................................... 121
Shifting into optimal ......................121
Gear selector lever ............................116
Cleaning ......................................... 267
Gearshift pattern ........................... 116
Shifting procedure ......................... 118
Transmission position indicator ..... 118
Transmission positions .................. 118
Generator
see Alternator
Global locking/unlocking
see Key, SmartKey
Glove box ........................................... 198
Gross Axle Weight Rating see GAWR
Gross Trailer Weight
see GTW Index
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Gross Vehicle Weight
see GVW
Gross Vehicle Weight Rating
see GVWR
GTW (Gross Trailer Weight) ..............249
GVW (Gross Vehicle Weight) ............249
GVWR (Gross Vehicle Weight
Rating) ................................................ 249H
Halogen headlamps see Headlamps


Hard plastic trim items, cleaning ....267
Hazard warning flasher ....................101
Headlamp cleaning system .............. 101
Headlamps
Active Bi-Xenon headlamps ............. 97
Automatic headlamp mode .............. 98
Bi-Xenon .................................. 97, 313
Cleaning lenses ............................. 265
Cleaning system ............................ 101
Daytime running lamp mode ............99
Delayed shut-off ............................ 135
Halogen ......................................... 313
High-beam flasher .........................101
High-beam headlamps ...................100
Low-beam headlamps ...................... 98
Replacing bulbs ............................. 312
Switch .............................................. 97
Headliner, cleaning and care of .......267
Head restraints .................................... 81
Adjustment ................................ 81, 83
NECK-PRO active front head
restraints ......................................... 53
NECK-PRO active front head
restraints, resetting ....................... 310
Heated steering wheel ........................93
Height adjustment
Seat belt outlet ................................ 50
Seats ............................................... 81
Vehicle level control ...................... 154
High-beam flasher ............................. 101
High-beam headlamps ..............100, 313
Indicator lamp .................................. 29
Hill-start assist system ..................... 153
Hinged quarter windows .................. 107Hood ...................................................
222
Messages in the multifunction
display

........................................... 288
Hooks ................................................. 189
Horn ...................................................... 27
HVAC see Climate control system
Hydroplaning ..................................... 255 I
Identification labels ..........................344
Identification number, vehicle
(VIN) ................................................... 345
Ignition ................................... 79, 80, 111
Immobilizer .......................................... 67
Indicator lamps see Lamps, indicator and warning


Infant and child restraint systems
see Children in the vehicle
Inflation pressure
see Tires, Inflation pressure
Infrared reflecting windshield .........217
Inside door handle .............................. 74
Instrument cluster ......................28, 122
Illumination .................................... 123
Lamps ............................................ 299
Multifunction display .....................125
Instrument lighting
see Instrument cluster, Illumination
Instrument panel
see Instrument cluster
Instruments and controls
see Cockpit
Interior lighting
Delayed shut-off ............................ 136
Emergency lighting ........................ 103
Front .............................................. 102
Front reading lamps ....................... 102
Rear ............................................... 103
Rear reading lamps ........................ 103
Interior rear view mirror .....................94
Auto-dimming rear view mirrors ....... 94
Interior storage spaces
see Storage compartments
Intermittent wiping
Rain sensor .................................... 10410
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SmartKey with KEYLESS-GO
..........289
SRS ................................................ 287
Tailgate
.......................................... 288
Tail lamps ...................................... 297
Tele Aid .......................................... 287
Tire inflation pressure ............283, 298
Tire pressure monitor .................... 283
Tires ...................................... 283, 298
Trailer brake lamps ........................297
Trailer tail lamps ............................ 297
Trailer turn signal lamps ................297
Turn signals ................................... 298
Washer fluid ................................... 290
Multifunction steering wheel
Adjustment ...................................... 91
Buttons .......................................... 123
Cleaning ......................................... 267
Easy-entry/exit feature ...........92, 137
Gearshift control ............................ 121
Heating ............................................ 93
Memory function .............................. 96
Overview .......................................... 30N
Navigation menu ............................... 129
Navigation system see Separate operating instructions


NECK-PRO active front head
restraints ............................................. 53
Resetting ....................................... 310
Nets, parcel ....................................... 188
Night security illumination .............. 135
Normal occupant weight .................. 250
Number, vehicle identification
(VIN) ................................................... 345O
Occupant Classification System see

OCS (Occupant Classification
System)
Occupant distribution ....................... 250
Occupant safety Air bags ........................................... 37
BabySmart™ .................................... 45
Children and air bags ....................... 37
Children in the vehicle .....................55Child seat anchors – LATCH-type
....60
Fastening the seat belts ...................
49
Front passenger front air bag off
indicator lamp (Canada
only) ........................................ 45, 307
Front passenger front air bag off
indicator lamp (USA only) ........42, 307
Infant and child restraint systems .... 55
Introduction ..................................... 36
OCS (Occupant Classification
System) ........................................... 42
PRE-SAFE ®
....................................... 52
Seat belts .................................. 39, 47
OCS (Occupant Classification
System) ................................................ 42
Self-test ........................................... 45
Odometer ........................................... 125
Oil, oil level see Engine oil
On-board computer
see Control system
One-touch gearshifting .....................120
Operating safety .................................. 22
Ornamental moldings, cleaning .......265
Outside temperature see Displays
Overhead control panel ......................32 P
Paintwork, cleaning ..........................264
Paintwork code ................................. 345
Panic alarm .......................................... 62
Panorama roof with power tilt/
sliding panel ...................................... 184
Cleaning .........................................

266
Operation ....................................... 184
Roller sunblinds ............................. 184
Synchronizing ................................ 186
Parcel nets ......................................... 188
Parking ............................................... 114
Parktronic system ..........................156
Parking brake ............................ 114, 255
Messages in the multifunction
display ........................................... 286
Parking position
Exterior rear view mirrors ................ 95
Transmission position .................... 118 Index
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Telephone
............................................. 30
Answering/ending a call ................ 141
Hands-free microphone ...................33
Menu ............................................. 140
Operation ....................................... 140
Phone book .................................... 141
Redialing ........................................ 142
Temperature
Interior temperature ..............168, 176
Outside .................................. 127, 133
Tether anchorage points
see Children in the vehicle
Tie-down rings ................................... 188
Tightening torque Wheels ........................................... 330
Time setting ....................................... 133
TIN (Tire Identification Number) ...... 250
Tire and Loading Information
placard ............................................... 236
Tire and loading terminology ...........248
TIREFIT ............................................... 320
Tire Identification Number see TIN
Tire inflation pressure
Checking ........................................ 230
Important notes on ........................ 229
Label on the inside of fuel filler
flap ................................................ 230
Placard on driver’s door B-pillar ..... 236
Tire labeling ....................................... 244
Tire load rating .................................. 249
Tire ply composition and material
used .................................................... 250
Tire pressure loss warning system . 231
Tire repair kit see TIREFIT
Tires ........................................... 227, 347
Advanced Tire Pressure
Monitoring System (Advanced
TPMS) ............................................ 232
Air pressure ................................... 228
Care and maintenance ................... 241
Cleaning ......................................... 242
Direction of rotation, spinning .......240
Important notes on tire inflation
pressure ........................................ 229
Inflation pressure ........................... 230Information placard .......................
236
Inspection ...................................... 241
Labeling ......................................... 244
Load index ............................. 245, 249
Load rating .................................... 249
Messages in the multifunction
display
................................... 283, 298
MOExtended .................................. 347
Ply composition and material
used ............................................... 250
Problems under-/overinflation ...... 230
Retreads ........................................ 227
Rims and tires (technical data) ...... 347
Rotation ......................................... 243
Service life ..................................... 241
Sizes .............................................. 347
Snow chains .................................. 252
Speed rating .......................... 246, 250
Storing ........................................... 242
Temperature .......................... 229, 243
Terminology ................................... 248
TIREFIT (tire repair kit) ................... 320
Tire Identification Number ............. 250
Tire pressure loss warning system . 231
TPMS low tire pressure/
malfunction telltale ........................ 306
Traction ................................. 242, 250
Tread ............................................. 251
Tread depth ........................... 241, 251
Treadwear ...................................... 242
Treadwear indicators ............. 241, 251
Vehicle maximum load on ..............251
Wear pattern .................................. 243
Winter tires ............................ 251, 347
Tire speed rating .......................246, 250
Tongue Weight Rating see TWR
Top tether
see Children in the vehicle
Total load limit ................................... 250
Towing
Towing eye bolt .............................. 338
Trailer .................................... 119, 256
Vehicle ........................................... 338
Towing eye bolt ................................. 338
Traction ...................................... 242, 250
Trailer towing ............................ 119, 256
Coupling a trailer ........................... 257 Index
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Decoupling ..................................... 259
Electrical connections
.................... 256
Towing ........................................... 258
Trailer hitch ................................... 256
Weights and ratings ....................... 256
Transfer case ..................................... 122
Transmission see Automatic transmission
Transmission fluid level .................... 225
Transmission gear selector lever see Gear selector lever
Transmission positions ....................118
Traveling abroad ............................... 259
Tread (tires) ....................................... 251
Tread depth (tires) ....................241, 251
Treadwear .......................................... 242
Treadwear indicators (tires) .... 241, 251
Trip computer menu .........................139
Trip odometer, resetting ................... 123
Turning off the engine ......................114
Turn signals ....................................... 100
Cleaning lenses ............................. 265
Indicator lamps ................................ 28
Messages in the multifunction
display ........................................... 298
TWR (Tongue Weight Rating) ........... 251U
Uniform Tire Quality Grading
Standards .................................. 242, 251
Units Selecting digital speedometer
display mode

................................. 132
Selecting speedometer/
odometer display mode ................. 132
Unleaded gasoline, premium ........... 353
Unlocking the vehicle
KEYLESS-GO .................................... 71
Manually ........................................ 308
SmartKey ......................................... 70
Upholstery, cleaning .........................268
Useful features .................................. 201 V
Vehicle
Battery ........................................... 333
Care ............................................... 262
Control system .............................. 123
Identification Number (VIN) ........... 344
Locking/unlocking

........................... 70
Lowering (wheel change) ...............329
Modifications and alterations,
Operating safety .............................. 22
Towing ........................................... 338
Unlocking/locking manually .......... 308
Vehicle dimensions
see Vehicle specification
Vehicle Identification Number
(VIN) ................................................... 344
Vehicle jack see Jack
Vehicle level control
see AIRMATIC
Vehicle lighting .................................... 97
Vehicle loading
Cargo tie-down rings ...................... 188
Cargo volume, expanding ..............189
Instructions .................................... 186
Load limit ....................................... 237
Roof rack ....................................... 187
Terminology ................................... 248
Vehicle maximum load on the tire ... 251
Vehicle specification
R 350 ............................................. 346
R 350 BlueTEC ............................... 346
Vehicle status message memory .... 130
Vehicle tool kit .................................. 270
Vehicle washing see Vehicle care
Vehicle weights
see Vehicle specification W
Warning lamps see Lamps, Indicator and warning


Warning sounds
Distance warning function .............152
Distronic ........................................ 147
Driver’s or passenger’s seat belt ..... 5118
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circumstances described below. Disabling
the system will reduce vehicle stability in
driving maneuvers.
Do not switch off the ESP
®
when a spare
wheel is mounted.
To improve the vehicle’s traction, switch off
the ESP ®
. This allows the drive wheels to spin
and thus cut into surfaces for better grip, for
example
R when driving with snow chains
R in deep snow
R in sand or gravel G
Warning!
Switch on the ESP ®
immediately if the
aforementioned circumstances do not apply
anymore. Otherwise the ESP ®
will not
stabilize the vehicle when it is starting to skid
or a wheel is spinning.
When you switch off the ESP ®
,
R the ESP ®
does not stabilize the vehicle
R the engine output is not limited, which
allows the drive wheels to spin and thus cut
into surfaces for better grip
R the 4-ETS will still apply the brakes to a
spinning wheel
R the ESP ®
continues to operate when you
are braking
R the cruise control or the Distronic system
cannot be activated
R the cruise control or the Distronic system
switch off if activated
i When the ESP ®
is switched off and one or
more drive wheels are spinning, the ESP ®
warning lamp d in the instrument
cluster flashes. However, the ESP ®
will
then not stabilize the vehicle. X
With the engine running, press ESP ®
switch : until the ESP ®
warning lamp
d in the instrument cluster comes on.
The ESP ®
is switched off. G
Warning!
When the ESP ®
warning lamp d is
illuminated continuously, the ESP ®
is
switched off or is not operational due to a
malfunction. Vehicle stability in standard
driving maneuvers is reduced.
Adapt your speed and driving to the prevailing
road conditions and to the non-operating
status of the ESP ®
.
! Avoid spinning of a drive wheel for an
extended period with the ESP ®
switched
off. This may cause serious damage to the
drivetrain which is not covered by the
Mercedes-Benz Limited Warranty.
Switching on the ESP ® X
Press ESP ®
switch : until the ESP ®
warning lamp d in the instrument
cluster goes out.
You are now again in normal driving mode
with the ESP ®
switched on.
ESP ®
trailer stabilization If the trailer you are towing should begin to
sway, the rig can only be stabilized by
immediately applying the brakes hard.
Steering during this maneuver will not help to
stabilize the rig.66
Driving safety systemsSafety and security
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The ESP
®
will assist you in such situations.
The ESP ®
recognizes when the trailer starts
swaying and will apply the brakes to reduce
the
vehicle speed to a non-critical speed that
allows the vehicle-trailer combination to
stabilize.
The ESP ®
trailer stabilization is functional at
vehicle speeds above approximately 40 mph
(65 km/h) when the ESP ®
is switched on. G
Warning!
The system will not be able to assist when the
trailer jackknifes
R if the ESP ®
has switched off due to a
malfunction
R on wet or icy roads
R on roads with slippery surface
R in sand or gravel
Trailers with a high center of gravity may tip
over

before the system recognizes swaying of
the trailer. Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle.
Activating X
With SmartKey: Remove the SmartKey
from the starter switch.
X With KEYLESS-GO:
Turn off the engine and
open the driver’s door.
Deactivating X
Switch on the ignition.
i Starting the engine will also deactivate
the immobilizer. In the event that the engine cannot be
started (yet the vehicle’s battery is
charged), the system is not operational.
Contact an authorized Mercedes-Benz
Center

or call 1-800-FOR-MERCedes (in the
USA) or 1-800-387-0100 (in Canada). Anti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens
R a door
R the tailgate
R the hood
The alarm will stay on even if the activating
element, a door, for example, is closed
immediately.
The

alarm system will also be triggered when
R the vehicle is opened with the mechanical
key
R a door is opened from the inside
To cancel the alarm after it has been
triggered, see “Canceling the alarm”
(Y page 68).
i If the alarm stays on for more than
30 seconds, the Tele Aid system initiates a
call to the Response Center automatically.
The Tele Aid system will initiate the call
provided that
R you have subscribed to the Tele Aid
service
R the Tele Aid service has been activated
properly
R the necessary mobile phone, power
supply and GPS coverage are available Anti-theft systems
67
Safety and security
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Effect
A
Neutral position
No power is transmitted from the
engine to the drive axle. When the
brakes
are released, the vehicle can
be moved freely (pushed or towed).
To avoid damage to the
transmission, never shift the
automatic transmission into neutral
position N while driving.
Exception: If the ESP ®
is switched
off or malfunctioning, shift the
automatic transmission into neutral
position N if the vehicle is in danger
of skidding.
! Coasting the vehicle, or driving
for any other reason with the
automatic transmission in neutral
position N can result in
transmission damage that is not
covered by the Mercedes-Benz
Limited Warranty. 7
Drive position
The automatic transmission shifts
automatically. All forward gears are
available.
Driving tips
Kickdown Use the kickdown when you want maximum
acceleration.
X
U.S. vehicles: Fully depress the
accelerator pedal.
Depending on the engine speed the
automatic transmission shifts into a lower
gear.
X Canada vehicles:
Depress the accelerator
pedal past the point of resistance.
Depending on the engine speed the
automatic transmission shifts into a lower
gear. Rocking the vehicle Rocking the vehicle by shifting the automatic
transmission directly between drive position
D and reverse gear
R can help free a vehicle
stuck in mud or snow. The engine control
system of this vehicle electronically limits
directly shifting the automatic transmission
between drive position D and reverse gear R
to

very low speeds, i.e. approximately 5 mph
(9 km/h). To shift the automatic transmission
directly between drive position D and reverse
gear R, move the gear selector lever up or
down past the resistance point.
Working on the vehicle G
Warning!
When working on the vehicle, engage the
parking brake and shift the automatic
transmission into park position P. Otherwise
the

vehicle could roll away which could result
in an accident and/or serious personal injury.
Towing a trailer X
When you tow a trailer, shift into a lower
gear range manually if the automatic
transmission hunts between gears on
inclines.
A

lower gear range and reduction of speed
reduces the potential to overload or to
overheat the engine.
For more information on trailer towing, see
“Trailer towing”
(Y page 256). Gear ranges
With the automatic transmission in drive
position D, you can limit or extend the gear
range, see “One-touch gearshifting”
(Y page 120). Automatic transmission
119
Controls in detail
251_AKB; 4; 52, en-US
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