hood open MERCEDES-BENZ R500 2006 W251 User Guide

434 Practical hintsWhat to do if …
During severe operation conditions and
stop-and-go city traffic, the coolant tem-
perature may rise close to 248°F (120°C).
Display symbol
Display messages
Possible cause/consequence
Possible solution
Ï
Coolant
Stop, engine off
The coolant is too hot.

Stop the vehicle in a safe location or as
soon as it is safe to do so and immediate-
ly turn off the engine.

Only start the engine again after the
message disappears. You could
otherwise damage the engine.
Warning!
G
Driving when your engine is badly overheat-
ed can cause some fluids which may have
leaked into the engine compartment to
catch fire. You could be seriously burned.
Steam from an overheated engine can cause
serious burns and can occur just by opening
the engine hood. Stay away from the engine
if you see or hear steam coming from it.
Turn off the engine, get out of the vehicle
and do not stand near the vehicle until the
engine has cooled down.
!The engine should not be operated with
the coolant temperature above 248°F
(120°C). Doing so may cause serious
damage which is not covered by the
Mercedes-Benz Limited Warranty.

439 Practical hints
What to do if …
Display symbol
Display messages
Possible cause/consequence
Possible solution
A
Check gas cap
See Operator’s Manual
A loss of pressure has been
detected in the fuel system. The
fuel cap may not be closed
properly or the fuel system may
be leaky.

Check the fuel cap (
page 342).
If it is not closed properly:

Close the fuel cap.
If it is closed properly:

Have the fuel system checked by an
authorized Mercedes-Benz Light Truck
Center.
a
Hood open
Trunk open
You are driving with the hood or
the tailgate open.

Close the hood (
page 345) or the
tailgate (
page 124).
You are trying to lock the vehicle
with the KEYLESS-GO* function
with a door or the tailgate open.

Close all doors and/or the tailgate
(page 124).

468 Practical hintsReplacing bulbsReplacing bulbs for front lamps
Before you start to replace a bulb for a
front lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 147).

Open the hood (
page 345).
Halogen headlamps
1Low beam/high beam headlamp cover2Bulb socket for turn signal lamp
2Bulb socket for turn signal lamp
3Bulb socket for low beam headlamp
4Bulb socket for high beam headlampLow beam headlamp bulbs

Turn cover 1 counterclockwise.

Remove cover 1.

Turn bulb socket 3 counterclockwise.

Pull bulb socket 3 out of the head-
lamp housing.

Pull the low beam bulb out of bulb
socket 3.

Insert the new low beam bulb into bulb
socket 3.

Insert bulb socket 3 into the head-
lamp housing.

Turn bulb socket 3 clockwise until it
engages.

Place cover 1 on the opening in the
headlamp housing.

Turn cover 1 clockwise until it engag-
es.

475 Practical hints
Replacing wiper blades
Replacing wiper blades
Front wiper blades Removing

Remove the SmartKey from the starter
switch.
or

Vehicles with KEYLESS-GO*:
Make sure the vehicle’s on-board
electronics have status0 (
page 39).

Fold the wiper arms forward until they
engage.1Wiper blade
2Tab
3Wiper arm

Press tabs2 together.

Tilt wiper blade 1 away from wiper
arm 3.

Take off wiper blade 1 in direction of
arrow.
!Never open the hood when the wiper
arms are folded forward.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
Do not allow the wiper arms to contact
the windshield glass without a wiper
blade inserted.
Make sure the wiper blades are proper-
ly installed. Improperly installed wiper
blades may cause windshield damage.
For your convenience, we recommend
that you have this work carried out by
an authorized Mercedes-Benz Light
Truck Center.
Warning!
G
For safety reasons, switch off wipers and
remove the SmartKey from starter switch
(vehicles with KEYLESS-GO*: Make sure the
vehicle’s on-board electronics have
status0) before replacing a wiper blade.
Otherwise the motor could suddenly turn on
and cause injury.

497 Practical hints
Jump starting
The jump-start contacts are located in the
engine compartment.
1Negative (-) terminal
2Positive (+) terminal 
Make sure the two vehicles do not
touch.

Turn off all electrical consumers.

Apply parking brake.

Set automatic transmission to
positionP.

Open the hood (
page 345).

Open cover of positive terminal 2.
1Negative terminal of discharged
battery
2Positive terminal of discharged battery
3Negative terminal of charged battery
4Positive terminal of charged battery

Connect positive terminals2 and 4
with the jumper cable. Clamp cable to
charged battery 4 first.

Start engine of the vehicle with the
charged battery and run at idle speed.

Connect negative terminals1 and 3
of the batteries with the jumper cable.
Clamp cable to charged battery 3
first.

Start the engine of the disabled vehi-
cle.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries.
!Never invert the terminal connections!

504 Practical hintsFusesMain fuse box
The main fuse box is located on the pas-
senger side of the engine compartment.
Open the hood (
page 345).
1Clamp
2Main fuse box cover

Switch off the ignition (
page 38) and
remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*:

Switch off the ignition (
page 39).

Open the driver’s door (this puts the
starter switch in position 0, same as
with the SmartKey removed from the
starter switch). The driver’s door then
can be closed again.

Release clamp1.

Lift fuse box cover2 up.

Install main fuse box cover in reverse
order.
Fuse box in cargo compartment
The fuse box is located behind under the
cargo compartment cover on the
right-hand side of the spare wheel well.
Open the tailgate (
page 122).

Lift the cargo compartment cover
(page 454).

Secure cargo compartment cover with
strap (
page 455).
1Cover
2Handle

Lift cover1 at handle 2.
!The fuse box cover must be installed
properly to prevent moisture and/or
dirt from entering the fuse box and pos-
sibly impairing fuse operation.

541 Index
Closing 248
Closing fully (Express-close) 250
Opening 248
Opening fully (Express-open) 250
Stopping 250
Synchronizing 251
Doors
Message in display 436
Opening from inside vehicle 121
Opening from outside 112
DOT 386, 530
Downhill driving
Cruise control 265
Drinking and driving 331
Drive sensibly-save fuel 331
Driving 50, 56
Abroad 339
In winter 337
Problems 62
Safety systems 97
Through standing water 338
Driving abroad 339
Driving off 333Driving safety systems
4-ETS 102
ABS 97
BAS 99
EBP 102
ESP
®
99
Driving systems 264
AIRMATIC* 269
Cruise control 264
Driving safety systems 97
Parktronic* 274
Driving tips 203
Accelerator position 203
Kickdown 203
E
Easy-entry/exit feature* 132
Activating 189
EBP 102
Electrical fuses 503
Electrical system
Technical data 518
Electronic Brake Proportioning see EBP
Electronic Stability Program see ESP
®
Electronic Traction System see 4-ETSEmergency calls
Initiating an emergency call 314
With Tele Aid* 313
Emergency operation (Limp Home
Mode) 207
Emergency operations
Closing tilt/sliding sunroof* 462
Locking the vehicle 460
Opening tilt/sliding sunroof* 462
Remote door unlock 319
Unlocking the vehicle 459
Emergency tensioning device see ETD
Emission control 340
Emission control label 511
Ending
A call (telephone*) 195
Engine
Message in the display 433
Starting 53
Starting with KEYLESS-GO* 54
Technical data 513
Turning off 66
Engine cleaning 397
Engine compartment
Hood 345
Main fuse box 504

544 IndexHeadliner
Cleaning 402
Height adjustment
Head restraints 44
Seat belts 52
Steering wheel 45
High beam flasher 58, 152
High beam headlamps
Messages in display 443
Switching on 151
Hood 345
Closing 346
Message in display 439
Opening 345
Hooks
Loading 282
Hydroplaning 335
I
Identification labels 510
Certification label 510
Vehicle identification number
(VIN) 511
Ignition 38
Switching on 54Immobilizer 104
Activating 104
Deactivating 104
Infant and child restraint systems 82
Installing 90
LATCH child seat mounts 92
Information
About service and warranty 10
Button for Tele Aid* 317
Infrared reflecting windshield* 328
Inside rear view mirror
Antiglare 209
Installing
Front wiper blades 476, 477
Infant and child restraint systems 90
Vehicle battery 489
Instrument cluster 24, 158, 531
Cleaning 401
Illumination 158
Lamps in 409
Outside temperature indicator 159
Selecting language 178
Instruments and controls see CockpitInterior lighting 154
Activating automatic control 155
Deactivating automatic control 155
Delayed switch-off 185
Manual operation 155
Interior rear view mirror
Adjusting 48
Intermittent wiping 60
J
Jump starting 496
K
Key, Mechanical 459
KEYLESS-GO*
Closing tailgate 128, 129
Loss of SmartKey with
KEYLESS-GO* 121
Starting the engine 54
Turning off engine 66
Unlocking and opening, tailgate 120
Unlocking with 37
Kickdown 203, 531
Kilometers/miles in speedometer 178
Kilopascal 386
Kilopascal (kPa) 531
Km/h or mph in speedometer 178

547 Index
Mirrors
Adjusting 47
Automatic antiglare for rear view
mirror 209
Exterior rear view mirror 48
Storing exterior rear view mirror park-
ing position 146
Modular Control System 531
MON 343
MON (Motor Octane Number) 532
Mph or km/h in speedometer 178
Multicontour seat* 136
Multifunction display 532
Selecting language 178
Standard display 165
Multifunction display messages
ABS 418
Batteries 430
Brake fluid 432
Brake pads 430
Coolant 436
Coolant level 433
Doors 436
EBP (Electronic Brake
Proportioning) 431
Engine oil 437, 438Fuel cap 439
Hood 439
Lamps 444
Lamps, exterior 442
Oil 437–438
Parking brake 431
SmartKey 441
SmartKey with KEYLESS-GO* 440
Tele Aid* 450, 451
Telephone* 451
Washer fluid 451
Multifunction steering wheel 28, 532
N
Navigation system 172
Night security illumination 150
Normal occupant weight 387, 532
O
Occupant Classification System 85
Self-test 90
Occupant distribution 387Occupant safety 70
Children and air bags 72
Children in the vehicle 82
Fastening the seat belt 50
Infant and child restraint systems 82
LATCH child seat mounts 92
Seat belts 50, 74
Oil
Adding 349
Consumption 346
Dipstick 346
Filler neck 349
Viscosity 530
One-touch gearshifting
Canceling gear range limit 207
Opening
Doors from the inside 121
Fuel filler flap 342
Fuel filler flap manually 461
Glove box 294
Hood 345