449 Technical data
Fuels, coolants, lubricants, etc.
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 engine 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 contain these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to Factory
Approved Service Products pamphlet for a
listing of approved product(s). Follow di-
rections 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 addition-
al fuel additives other than those tested
and approved by us for use on
Mercedes-Benz vehicles listed in the
Factory Approved Service Products pam-
phlet are not covered by the
Mercedes-Benz Limited Warranty.
450 Technical dataFuels, coolants, lubricants, etc.Coolants
The engine coolant is a mixture of water
and anticorrosion / antifreeze, which pro-
vides:
corrosion protection
freeze protection
boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately -22°F (-30°C) and corro-
sion protection.
If the antifreeze mixture is effective to
-22°F (-30°C), the boiling point of the cool-
ant in the pressurized cooling system is
reached at approximately 266°F (130°C).
The coolant solution must be used year
round to provide the necessary corrosion
protection and increase in the boil-over
protection. Refer to Maintenance Booklet
for replacement interval.Coolant system design and coolant used
stipulate the replacement interval. The re-
placement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 anticorrosion/antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification (see
Factory Approved Service Products pam-
phlet) are used to renew the coolant con-
centration or bring it back up to the proper
level.
To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze (equivalent to freeze
protection to approx. - 22°F [-30°C]). If
you use a solution that is more than 55%
anticorrosion/antifreeze (freeze protec-
tion to approx. - 49°F [-45°C]), the engine
temperature will increase due to the lower
heat transfer capability of the solution.
Therefore, do not use more than this
amount of anticorrosion/antifreeze.If the coolant level is low, water and
MB 325.0 Anticorrosion /Antifreeze
should be used to bring it up to the proper
level (have cooling system checked for
signs of leakage). Please make sure the
mixture is in accordance with label instruc-
tions.
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality, con-
sult an authorized Mercedes-Benz Center.
455 Technical terms
Engine number
The number set by the manufacturer
and placed on the cylinder block to
uniquely identify each engine pro-
duced.
ESP
®(Electronic S
tability P
rogram)
Improves vehicle handling and direc-
tional stability.
ETD
(E
mergency T
ensioning D
evice)
Device which deploys in certain frontal
and rear collisions exceeding the sys-
tem's threshold to tighten the seat
belts.
->SRSFSS (Canada vehicles)
(F
lexible S
ervice S
ystem)
Maintenance service indicator in the
multifunction display that informs the
driver when the next vehicle mainte-
nance service is due. FSS evaluates en-
gine temperature, oil level, vehicle
speed, engine speed, distance driven
and the time elapsed since your last
maintenance service, and calls for the
next maintenance service accordingly.
GAWR
(G
ross A
xle W
eight R
ating)
(
page 311)
Gear range
Number of gears which are available to
the automatic transmission for shifting.
The automatic gear shifting process
can be adapted to specific operating
conditions using the gear selector le-
ver.GPS
(G
lobal P
ositioning S
ystem)
Satellite-based system for relaying
geographic location information to and
from vehicles equipped with special re-
ceivers. Employs CD digital maps for
navigation.
GVW
(G
ross V
ehicle W
eight)
(
page 311)
GVWR
(Gross V
ehicle W
eight R
ating)
(
page 311)
Head-thorax airbag
Installed in the doors, these airbags
protect occupants during side impact
collisions exceeding a preset thresh-
old. Unlike normal side airbags,
head-thorax airbags are also designed
to provide protection for the head area.
466 IndexEngine oil 274, 447
Adding 276, 445
Additives 447
Checking level 274
Consumption 274
Filler neck 276
Messages in the multifunction
display 275, 369
Recommended engine oils and
filters 447
ESP
®
82, 85, 455
Switch 30
Switching off 86
Switching on 87
Synchronizing 354
Warning lamp 25, 332
ETD 74, 455
Safety guidelines 69
Warning and indictor lamps 341
Exterior lamp switch 123
Exterior rear view mirrors 44, 177
F
Filler neck, Engine oil 276
First aid kit 383Flat tire 399
Preparing the vehicle 399
Spare wheel 383, 404
TIREFIT kit 384, 399
Flexible Service System see FSS
Fluids
Automatic climate control
system 445
Automatic transmission 277, 445
Brake system 271, 445, 447
Capacities 445
Engine coolant 278, 445, 450
Engine oil 274, 445, 447
Power steering 445
Retractable hardtop, Hydraulics 445
Windshield washer and headlamp
cleaning system 445
Fog lamps 126
Messages in the multifunction
display 375, 377
Replacing bulbs 392
Front airbags 70
Front lamps see Headlamps
Front passenger front airbag off indicator
lamp 78
FSS (Canada only) 318, 455Fuel 269
Additives 449
Capacity, Fuel tank 445
Consumption statistics 157
Filler flap 269
Fuel reserve warning lamp 27, 338
Gasoline additives 449
Gauge 27
Premium unleaded gasoline 270,
446, 448
Refuelling 269
Requirements 448
Fuel cap
Messages in the multifunction
display 371
Fuels, coolants, lubricants etc.
Capacities 445
Functions (control system) 137
Fuse chart see Vehicle tool kit
Fuses 425
G
Garage door opener 247
Gasoline see Fuel
GAWR 311, 455
470 IndexMassage function 117
Maximum cooling MAXCOOL 186
Maximum inflation pressure 311
Maximum load rating 311, 456
Maximum loaded vehicle weight 311,
456
Maximum tire inflation pressure 456
Memory function 456
Menus 137
AUDIO 141
Distronic* 143
NAV 143
Standard display 140
TEL* 159
Trip computer 157
Vehicle status message memory 144
Menus see Control system menus
Microphone
Hands-free microphone 31
Miles/kilometers in speedometer 149
Minimum distance (Parktronic*) 225
Mirrors 44, 177
Adjusting interior rear view mirror 44
Exterior rear view mirrors 44
Misfiring 56
MOE tires see MOExtended system*MOExtended system* 411
MOExtended tires 440
MON 270, 456
Mph or km/h in speedometer 149
Multifunction display 135, 456
Displaying gear range 167
Left display field 25
Right display field 27
Selecting language 150
Standard display 135
Multifunction display messages
ABC 347
ABS 349
Battery 359, 360
Brake pads 360
Brake system 364
CHECK ENGINE 365
Coolant 366
Coolant level 365, 368
Display malfunction 368
Doors 369
Easy-entry/exit feature 369
Electro-hydraulic brake system 361,
362
Hood 372
Luggage cover 382Retractable hardtop 371
Roll bar 379
Seat belts 379
SmartKey 372
SmartKey with KEYLESS-GO* 373
Tele Aid 379
Telephone* 379
Tires 380
Trunk 382
Washer fluid 382
Multifunction steering wheel 28, 136,
456
Buttons 136
N
Navigation system
Operating 143
Night security illumination 154
Normal occupant weight 311, 456
O
Occupant distribution 311
Octane number 458
Odometer, main 25
Oil
Adding 276
Consumption 274
471 Index
Oil see Engine oil
One-touch gearshifting 169
Canceling gear range limit 169
Downshifting 169
Upshifting 169
Opening
Doors from the inside 107
Fuel filler flap 269
Hood 272
Luggage cover 196
Retractable hardtop (SmartKey) 199
Retractable hardtop (switch) 196
Side windows 193
Storage compartment in the
armrest 229
Storage compartment in the center
console 229
Sunshade 203
Trunk from inside vehicle 108
Trunk lid 108
Windows 192
Operating
CD player 142
Navigation system 143
Radio 141
Telephone* 159Ornamental moldings 325
Overdue maintenance service 319
Overhead control panel 31
Overspeed range 133, 457
P
Paintwork code see Certification label
Panic alarm 81
Panic button on SmartKey 81
Panorama roof*
Sunshade 203
Sunshade closing 203
Sunshade opening 203
Parcel net
In front passenger footwell 231
Parcel net in trunk 231
Parking 261
Parking assistance (Parktronic*) 223
Parking brake
Engaging 59
Releasing 51
Parking brake pedal 23
Parking lamps 392
Switching on 123
Parktronic* 30, 223, 457
Activating 226
Cleaning system sensors 326Malfunctioning 227
Minimum distance 225
Range 224
Rear sensors 225
System sensors 326
Warning indicators 23, 225
Parktronic* deactivation switch 30
Parts service 428
Passenger side
Front airbag 70
Head-thorax airbag 71
Pedals 257
Phone book* 160
Loading 160
Quick search 160
Phone number*
Dialing 160
Redialing 161
Poly-V-belt drive 457
Layout 431
Potential problems associated with under-
inflated and overinflated tires 299
Pounds per square inch see PSI
Power assistance 258
Power outlet 237