579 Practical hints
What to do if …?
ProblemPossible cause/consequenceSuggested solution
59
The front passenger front
air bag off indicator lamp
does not illuminate and/or
does not remain illuminat-
ed with the weight of a typ-
ical 12-month-old child in a
standard child restraint or
less on the front passen-
ger seat.
The system is malfunctioning.Make sure there is nothing between seat cushion and child seat and
check installation of the child seat.
Make sure no objects applying supplemental weight onto the seat
are present.
Make sure no objects which apply forces to the seat are present
(e.g. objects such as books, briefcases etc. lodged behind or around
the seat, head restraints pushing against roof etc.). The system may
recognize such forces as supplemental weight.
If the front passenger front air bag off indicator lamp remains out,
have the system checked as soon as possible by an authorized
Mercedes-Benz Center. Do not transport a child on the front pas-
senger seat until the system has been repaired.
Also read and observe any messages in the multifunction display
and follow corrective steps (
page 580).
Warning!G
If the59indicator lamp does
not illuminate or remains out with the
weight of a typical 12-month-old child in a
standard child restraint or less on the front
passenger seat, do not transport a child on
the front passenger seat until the system
has been repaired.
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587 Practical hints
What to do if …?
Display Possible cause/consequencePossible solution
Front pass. airbag
enabled
See Oper. ManualFront passenger front air bag is
activated while driving even
though a child, small individual,
or object below the system’s
weight threshold is on the front
passenger seat, or the front pas-
senger seat is empty. Objects
on the seat or forces acting on
the seat may make the system
sense supplemental weight.Stop the vehicle in a safe location as soon as possible and check the front
passenger seat for the following:
Switch off the ignition (page 336).
Remove child and child restraint from front passenger seat and properly
secure the child in rear seat employing the child restraint if necessary.
Remove any other items from on and around the front passenger seat and
make sure the storage bag on the back of the front passenger seat is emp-
ty.
Make sure that no objects which apply forces to the seat are present (e.g.
objects such as books, briefcases etc. lodged behind or around the seat,
head restraints pushing against roof etc.). The system may recognize such
forces as supplemental weight and sense that an occupant on the front
passenger seat is of a greater weight than actually present.
Keep the seat unoccupied, close the passenger door and switch on the ig-
nition (
page 336).
Monitor the 59indicator lamp right of the instrument cluster
(
page 50) and the multifunction display in the instrument cluster
(
page 256) for the following:
(Continued on next page)
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638 Practical hints
Opening/closing in an emergency
Power tilt/sliding sunroof
You can open or close the tilt/sliding sun-
roof manually should an electrical malfunc-
tion occur.
The drive mechanism is behind the left sun
visor.
1Cover
Remove cover1.2Crank
Take crank2 from the Operator’s
Manual pouch.
Switch on the ignition (page 336).
Insert crank2 through the hole.
Turn crank2 clockwise to:
slide roof panel closed
raise roof panel at the rear
Turn crank2 counterclockwise to:
slide roof panel open
lower roof panel at the rear
iTurn crank2 slowly and smoothly.
The tilt/sliding sunroof (
page 468) must be
synchronized after being operated manually.
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656 Practical hints
Batteries
!The consumer battery located in the trunk is
a v
alve-regulated lead acid (VRLA) battery, also
referred to as “fleece” battery. Such batteries do
not require topping-up of the electrolyte level.
VRLA batteries therefore do not have cell caps
and the battery cover is non-removable. Do not
attempt to open the consumer battery as other-
wise the battery will be damaged.
Even though VRLA batteries do not require top-
ping-up of the electrolyte level and cannot be
opened to check the electrolyte level, the bat-
tery condition must be checked periodically by
performing a battery conductance test. Refer to
Maintenance Booklet for battery condition test-
ing intervals.
As with any other battery, disconnect the con-
sumer battery if you do not intend to operate
your vehicle for an extended period of time to
prevent battery discharge or connect an acces-
sory battery charge unit expressly approved by
Mercedes-Benz for your vehicle model to main-
tain the battery charge. Contact an authorized
Mercedes-Benz Center for further information.!The factory-equipped VRLA battery is
leak-proofed. Only use a battery as replacement
that has the same security features and is of
identical size, voltage, and capacity as the facto-
ry-equipped battery.
The battery, the battery ventilation and the later-
al plug must always be securely installed when
the vehicle is in operation.
Warning!G
Failure to follow these instructions can re-
sult in severe injury or death.
Never lean over batteries while connecting,
you might get injured.
Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking, etc.
Warning!G
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof battery only to avoid the risk
of acid burns in the event of an accident.
Take care that you do not become statically
charged, e.g. by wearing synthetic clothing
or rubbing against textiles. For this reason,
you also should not pull or push the battery
over carpets or other synthetic materials.
Never touch the battery first. First touch the
outside body of the vehicle in order to re-
lease any possible electrostatic charges.
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700 Index
Emergency operations
Locking the vehicle 635
Mechanically releasing
the electronic parking brake 637
Releasing from inside 464
Remote door lock 489
Remote door unlock 489
Tilt/sliding sunroof 638
Unlocking the trunk 636
Unlocking the vehicle 635
Emergency Tensioning Device see ETD
Emergency, In case of
Battery, Jump starting 660
First aid kit 632
Flat tire 649
Fuses 667
Roadside Assistance 16
Roadside Assistance (Tele Aid) 485
Towing the vehicle 663
Emission control 507
Emission control information label 675
Emission control system warranties 14Engine
Belt layout 676
Cleaning 556
Compartment 512
Coolant 518, 685, 689
Malfunction indicator lamp 31, 570
Number 674, 675
Oil 516, 684, 686
Oils 513
Residual heat and ventilation 460
Starting 378
Technical data 677
Turning off 387
Engine coolant see Coolant
Engine oil 513
Adding 516
Additives 686
Checking level 513
Checking level (Dipstick) 516
Checking level (Instrument
cluster control system) 514
Consumption 513Dipstick 516
Filler neck 516, 517
Messages in display 515, 623
Recommended engine oils
and oil filters 684
ESP
®69
Messages in display 594, 605
Warning lamp 31, 567, 572
ETD 55
Safety guidelines 44
Exterior lighting
Delayed switch-off (COMAND) 235
Locator lighting (COMAND) 236
Exterior rear view mirrors
Adjusting 353
Auto-dimming
on the driver’s side 355
Fold in automatically when locking
(COMAND) 237
Lower mirror when reversing
(COMAND) 237
Power folding 354
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708 Index
P
Paintwork, Cleaning 555
Panic alarm
Audible alarm and
flashing exterior lamps 63
Panic button 63
Parcel net
in front passenger footwell 471
Park Assist* 435
Cleaning system sensors 559
Messages in display 589
System sensors 559
Warning indicators 31, 437
Parking 384, 502
Parking and standing lamps
Replacing bulbs 642
Parking position
Exterior rear view mirrors 356
Parktronic* 431
Cleaning system sensors 559
Malfunctioning 434
System sensors 559
Warning indicators 31, 433
Parts service 672PASS AIR BAG OFF indicator lamp
see Front passenger front
air bag off indicator lamp
Passenger compartment 506
Passenger safety see Occupant safety
PCMCIA card
Ejecting (COMAND) 113
Loading (COMAND) 112
Pedals 499
Plastic parts, cleaning 563
POIs 188
Poly-V-belt drive 676
Layout 676
Potential problems associated
with underinflated and
overinflated tires 535
Power assistance 499
Power closing assist for
doors and trunk lid 334
Power folding
exterior rear view mirrors 354
Power seats
Folding back
front seat backrests 342
Folding forward
front seat backrests 342Power tilt/sliding sunroof 466
Emergency operations 638
Opening/closing 466
Opening/closing
in an emergency 638
Synchronizing 468
Power washer 555
Power windows 374
Cleaning 562
Opening/closing 374
Rear side windows,
Blocking operation 62
Practical hints 580, 632
Premium
unleaded gasoline 510, 685, 687
PRE-SAFE
®56
Message in display 589
Messages in display 595
PRE-SAFE
® Brake*
Intermittent signal tone 75
Preventive occupant safety
see PRE-SAFE
®
Problems
While driving 383
With vehicle 21
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712 Index
SRS 53
Indicator lamp 31, 575
Messages in display 626
Standing water, Driving through 505
Starter battery 657
Starter switch 336
Positions 336
Starting difficulties, Engine 380
Starting, Engine 378
Steering column 351
Steering wheel
Adjustment 351
Cleaning 563
Easy entry/exit feature 344
Heated steering wheel* 352
Power steering fluid 685
Steering wheel gearshift control
Automatic transmission 400
Stolen Vehicle Recovery services 490
Storage compartments 469
Cup holder 473
Front armrest 470
Parcel net 471
Rear armrest 472
Storage compartment
in front armrest 470Storage tray/telephone*
compartment in front armrest 470
Under the front seats 471
Storing tires 522
Summer opening feature 376
Sun visors 476
Sunroof see Power tilt/sliding sunroof
Sunshades
Extending or retracting rear window
sunshade (COMAND) 242
Suspension tuning
Setting (ABC) 429
Symbols used
in this operator’s manual 19
System settings (COMAND)
Bluetooth
® settings 232
Display 227
Favorite button 231
Menu overview 227
Reset 234
Setting the system language 231
Time settings 227
Voice Control settings
(COMAND) 229T
Tachometer 403
Overspeed range 403
Tail lamps
Cleaning lenses 558
Messages in display 621
Tar stains 555
Tele Aid 482
Automatic Maintenance Call 490
Call priority 488
Emergency calls 483
Hands-free microphone 37
Information 487
Information button 485
Initiating an
emergency call manually 485
Messages in display 628
Remote door lock 489
Remote door unlock 489
Roadside Assistance 486
Roadside Assistance button 485
SOS button 485
Stolen Vehicle
Recovery services 490
System self-check 483
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713 Index
Telephone cradle
Changing 481
Telephone* 479
“911” emergency call
(COMAND) 123
Accepting/ending a call
(COMAND) 130
Answering/ending a call
(Instrument cluster
control system) 268
Call lists (COMAND) 128
Changing mobile phone cradle 481
Compartment 470
Dialing (Instrument cluster
control system) 266
Entering the telephone number
(COMAND) 131
Hands-free microphone 37
Inserting in cradle 480
Installing a different
mobile phone cradle 482
Operation 265
Operation (COMAND) 120
Phone book (COMAND) 137Phone book (Instrument cluster
control system) 266
PIN (COMAND) 124
PIN2 (COMAND) 125
PUK / PUK2 (COMAND) 125
Redialing (COMAND) 132
Redialing (Instrument cluster
control system) 267
Removing from cradle 481
Single call connection
(COMAND) 133
Speed dialing (COMAND) 132
Submenu overview (COMAND) 126
Switching on/off (COMAND) 122
Transferring a call (COMAND) 136
Unlock code (COMAND) 125
Voice Control 278
Telephone* cradle
Changing 481
Temperature
Outside temperature indicator 31
Setting interior temperature
(COMAND) 245
Tires 529
Tightening torque, Wheel bolts 654Tilt/sliding sunroof see
Power tilt/sliding sunroof
Time
Setting (COMAND) 227
TIN 547
Tire and
Loading Information Placard 524
Tire Identification Number see TIN
Tires 520
Advanced Tire Pressure Monitoring
System (Advanced TPMS)* 531
And Rims 678
And Wheels 520
Care and maintenance 521
Chains 550
Checking inflation pressure electroni-
cally with Advanced Tire Pressure
Monitoring System
(Advanced TPMS)* 531
Cleaning 522
Cold tire inflation pressure 545
Combination low tire pressure*
malfunction telltale 31, 576
Direction of rotation 523
Driving instructions 502
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