688 Technical data
Fuels, coolants, lubricants, etc.
Fuel requirements
Only use premium unleaded fuel:
The octane number (posted at the
pu m p) m us t b e 91 mi n. It is an a vera ge
of both the Research Octane Number
(RON) and the Motor Octane Number
(MON): (RON+MON)/2. This is also
known as the ANTI-KNOCK INDEX.
Unleaded gasoline containing oxygenates
such as ethanol, IPA, IBA and TBA can be
used provided the ratio of any one of these
oxygenates to gasoline does not
exceed 10%; MTBE must not exceed 15%.
The ratio of methanol to gasoline must not
exceed 3% plus additional co-solvents.
Using mixtures of ethanol and methanol is
not allowed. Gasohol, which contains
10% ethanol and 90% unleaded gasoline,
can be used.
These blends must also meet all other fuel
requirements, such as resistance to spark
knock, boiling range, vapor pressure, etc.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to en-
gine performance problems such as:
Warm-up hesitation
Unstable idle
Knocking/pinging
Misfire
Power lossIn areas where carbon deposits may be en-
countered due to lack of availability of gas-
olines which contains these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to the
Factory Approved Service Products pam-
phlet (USA only) or contact an authorized
Mercedes-Benz Center of listing of ap-
proved product(s). Follow directions on
product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary cost and
may be harmful to the engine operation.
!Damage or malfunction resulting from poor
fuel quality or from blending additional fuel addi-
tives other than those tested and approved by us
for use on Mercedes-Benz vehicles are not cov-
ered by the Mercedes-Benz Limited Warranty.
For a listing of approved products, refer to the
Factory Approved Service Products pamphlet
(USA only) or contact an authorized
Mercedes-Benz Center.
ProCarManuals.com
698 Index
Distance warning lamp 31, 572
Driving hints 426
Increasing distance 425
Increasing time interval 425
Intermittent signal tone 414
Lever 417
Menu 416
Messages in display 583
Sensor cover 558
Setting a higher speed 421
Setting a slower speed 422
Setting following distance 425
Setting the current speed 421
Setting to last stored speed
(“Resume” function) 423
Warning and indicator lamps 414
Document holder 476Door
Control panel 38
Entry lamps 371
Inside door handle 333
Locking 324, 330
Locking with Tele Aid 489
Messages in display 585, 612
Opening from inside vehicle 333
Opening from outside 324, 330
Power closing assist 334
Unlocking 324, 329
Unlocking with Tele Aid 489
DOT 545
Downhill driving
Cruise control 407
Drink holder see Cup holder
Drinking and driving 499
Drive-dynamic multicontour seats*
Adjusting (COMAND) 252
Drive-dynamic function
(COMAND) 255
Multicontour adjustments
(COMAND) 252Driving 378
Abroad 506
Hydroplaning 503
In winter 504
Instructions 378, 499
Problems 383
Safety systems 64
Through standing water 505
With DISTRONIC Plus* 426
Driving maneuver (COMAND) 196
Driving off 501
Driving safety systems
ABS 64
Adaptive Brake Lights
(CL 600 and USA only) 66
BAS 66
BAS Plus 67
EBP 69
Electronic traction system 71
ESP
®69
ProCarManuals.com
699 Index
Driving systems 405
ABC 429
Cruise control 405
DISTRONIC Plus* 411
Driving safety systems 64
Dynamic Rear View Monitor* 439
Park Assist* 435
Parktronic system* 431
Vehicle level control (ABC) 429
Driving tips 396
Kickdown 396
DVD 107
Audio (COMAND) 107
Changer (COMAND) 111
Changer (Voice Control) 303
Ejecting (COMAND) 113
Loading (COMAND) 111
Playback options (COMAND) 119
Selecting a medium (COMAND) 117
Selecting a track (COMAND) 117
Setting
the audio format (COMAND) 119Dynamic Rear View Monitor* 439
Camera lens 560
Cleaning camera lens 560
Parallel parking 443
Reverse parking
(back-in parking) 441
Switching on 441
View through the camera 439E
Easy-entry/exit feature 344
COMAND menu 239
EBP 69
Electrical fuses see Fuses
Electrical system, Technical Data 682
Electronic Brake Proportioning see EBP
Electronic parking brake 384
Indicator lamp 31, 568
Mechanically releasing 637
Messages in display 599
Warning lamp 31, 568
Electronic Stability Program see ESP
®
Electronic traction system 71
Emergency call system 482
Emergency calls, Tele Aid 483
Emergency engine shut-down 670
Emergency operation
(Limp-Home Mode) 401
ProCarManuals.com
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
ProCarManuals.com
704 Index
Key, SmartKey with KEYLESS-GO* 326
Battery check lamp 326, 330
Factory setting 329
Global locking and unlocking 330
Important notes
on using KEYLESS-GO* 328
Lock button 326
Locking and unlocking 326
Locking using the lock button
on door or on trunk lid 331
Loss of 332
Messages in display 614
Opening button for trunk 326
Panic button 63
Remote control 326
Restoring to factory setting 331
Selective setting 330
Starting the engine 379
Switching on ignition with 338
Turning off engine 388
Unlock button 326
Kickdown 396
Kilopascal 545
Knee bag 46L
Labels 674
Certification 674
Emission control information 675
Tire and Loading Information 524
Vacuum line routing diagram 675
Lamp bulbs, exterior 641
Lamps, exterior
Front 642
Light sensor 617
Rear 642
Lamps, indicator and warning
ABS 31, 64, 566
Air bag Off 46
Battery check lamp (SmartKey
with KEYLESS-GO*) 330
Battery check lamp (SmartKey) 325
Brake warning lamp 31
Brakes 567
Combination low tire pressure*
malfunction telltale 31, 576
Distance warning lamp* 31, 572
DISTRONIC Plus* 31, 414, 572
Electronic parking brake 31, 568
Engine diagnostics 31, 570
Engine malfunction 31, 570ESP®31, 567, 572
Front passenger front
air bag off 50, 578
Fuel reserve 573
High beam headlamp 31
Maintenance service indicator 551
Park Assist* 31
Parktronic* 31
Seat belt telltale 31, 573
SRS 31, 575
TPMS* malfunction telltale 31, 576
Turn signals 31
Language (COMAND) 231
LATCH-type child seat anchors
see Children in the vehicle
Lever
For automatic transmission
(gear selector lever) 389
For cruise control 406
For DISTRONIC Plus* 417
License plate lamps
Messages in display 619
Replacing bulbs 642
Light alloy wheels, Cleaning 563
ProCarManuals.com
706 Index
Messages in display see
Multifunction display messages
Microphone, Hands-free 37
Minispare wheel 634, 681
Mounting 649
Mirrors
Activating exterior rear
view mirror parking position 356
Adjusting 353
Auto-dimming for rear
view mirrors 355
Exterior rear view mirrors 353
Interior rear view mirror 353
Mobile phone see Telephone*
Modifications and alterations,
Operating safety 20
MON 510, 685
MP3
Menu overview (COMAND) 114
Operation (COMAND) 115
Playback options (COMAND) 119
Selecting a folder (COMAND) 118
Selecting a medium (COMAND) 117
Selecting a track (COMAND) 117
MP3 (COMAND) 107Multicontour adjustments see
Drive-dynamic multicontour seats*
Multifunction display 256
Multifunction display messages
ABC 593
ABS 594
Batteries, vehicle 608
Brake fluid 596
Brake pads 598
Coolant 610
Coolant level 609
Cruise control 582
DISTRONIC Plus* 583
Doors 612
EBP (Electronic
Brake Proportioning) 597
Electronic parking brake 599
Engine oil 514, 623
ESP
®594, 605
Fog lamps 619
Front passenger front air bag 585
Fuel cap 613
Gear selector
lever 585, 589, 591, 592, 631
Headlamps 617
Hood 613Key, SmartKey 615
Key, SmartKey
with KEYLESS-GO* 614
Lamps, exterior 617
License plate lamps 619
Light sensor 617
Night View Assist* 622
Park Assist* 589
PRE-SAFE
®589, 595
Restraint systems 626
Seat backrest 631
Side marker lamps 620
SRS 626
Tail lamps 621
Tele Aid 628
Trunk 631
Windshield washer fluid 631
Multifunction steering wheel 257
ProCarManuals.com