Page 278 of 354

275 Engine compartment
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hintsCar care Index Adding coolant
If coolant has to be added, a 50/50 mixture of water and
MB anticorrosion / antifreeze should be added.
The drain plugs for the cooling system are located on
the right side of the engine block and at the bottom of
the radiator.
Anticorrosion / antifreeze, see page 332.
Wa r n i n g !
In order to avoid possibly serious burns:
• Use extreme caution when opening the hood if
there are any signs of steam or coolant leaking
from the cooling system, or if the coolant
temperature gauge indicates that the coolant is
overheated.
• Do not remove pressure cap on coolant
reservoir if engine temperature is above 194
°F
(90
°C). Allow engine to cool down before
removing cap. The coolant reservoir contains
hot fluid and is under pressure.
• Using a rag, slowly open cap approximately
1/2
turn to relieve excess pressure. If opened
immediately, scalding hot fluid and steam will
be blown out under pressure.
• Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which may
burn if it comes into contact with hot engine
parts.
Page 331 of 354

328 Fuels, coolants, lubricants etc. - capacities
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index
Fuels, coolants, lubricants etc. - capacities
Vehicle components and their respective lubricants must match. Therefore use only brands tested and recommended
by us. Please refer to the Factory Approved Service Products pamphlet, or inquire at your authorized Mercedes-Benz
Center.
Model Capacity Fuels, coolants, lubricants etc.
Engine with oil filter 8.5 US qt (8.0 l) Recommended engine oils
Automatic
transmission8.0 US qt (7.5 l) Automatic transmission fluid
Rear axle 1.4 US qt (1.3 l) Hypoid gear oil SAE 90, 85 W 90
Front axle E 320 with AWD 0.5 US qt (0.46 l) Hypoid gear oil SAE 90, 85 W 90
Transfer case E 320 with AWD 0.9 US qt (0.9 l) Automatic transmission fluid
Power steering approx. 1.3 US qt (1.1 l) MB Power steering fluid
Front wheel hubs approx. 2.1 oz (60 g) each High temperature roller bearing
grease
Brake system approx. 0.5 US qt (0.5 l) MB Brake fluid (DOT 4)
Page 332 of 354

329 Fuels, coolants, lubricants etc. - capacities
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index Windshield washer
systemapprox. 5.8 US qt (5.5 l) MB Windshield washer
concentrate “S”
1
Headlamp washer
systemapprox. 1.9 US qt (1.8 l) MB Windshield washer
concentrate “S”
1
Cooling system approx. 10.6 US qt (10 l) MB Anticorrosion / antifreeze
Fuel tank including
a reserve ofapprox. 18.5 US gal (70.0 l)
approx. 2.4 US gal (9.0 l)Premium unleaded gasoline:
Posted Octane 91
(Avg. of 96 RON / 86 MON)
Air conditioner
systemR-134a refrigerant and special
PA C l u b r i c a n t (Never R-12)1 Use MB Windshield Washer Concentrate “S” and water for temperatures above freezing or MB Windshield Washer Concentrate “S” and
commercially available premixed windshield washer solvent / antifreeze for temperatures below freezing. Follow suggested mixing ratios, see
page 276.
Model Capacity Fuels, coolants, lubricants etc.
Page 336 of 354

333 Fuels, coolants, lubricants etc. - capacities
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car care Index 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 anticorrosion /
antifreeze should be used to bring it up to the proper
level (have cooling system checked for signs of leakage).
The water in the cooling system must meet minimum
requirements, which are usually satisfied by normal
drinking water. If your are not sure about the water
quality, consult your authorized Mercedes-Benz Center.
Anticorrosion / antifreeze
Your vehicle contains a number of aluminum parts. The
use of aluminum components in motor vehicle engines
necessitates that anticorrosion / antifreeze coolant used
in such engines be specifically formulated to protect the
aluminum parts. (Failure to use such anticorrosion /
antifreeze coolant will result in a significantly
shortened service life.)
Therefore the following product is strongly
recommended for use in your car: Mercedes-Benz
Anticorrosion / Antifreeze Agent.Before the start of the winter season (or once a year in
the hot southern regions), you should have the
anticorrosion / antifreeze concentration checked. The
coolant is also regularly checked each time you bring
your vehicle to your authorized Mercedes-Benz Center
for service.
Anticorrosion / antifreeze quantity
Approx. freeze protection
– 35
°F
(– 37 °C)– 49
°F
(– 45 °C)
5.6 US qt
(5.3 l)5.8 US qt
(5.5 l)
Page 341 of 354

338 Index
Te ch n i c a l
data Instruments
and controlsOperation DrivingInstrument
cluster displayPractical hints Car careIndex
Center console .................................................................. 20
Central locking switch .................................................... 34
Central locking system ................................................... 27
Automatic central locking ......................................... 35
Choosing global or selective mode ........................... 30
Electronic key .............................................................. 25
Locking and unlocking .............................................. 29
Mechanical keys .......................................................... 31
Remote control ............................................................ 25
Summer opening/convenience feature ................... 30
CHECK ENGINE
malfunction indicator lamp ..................................... 244
Check regularly and before a long trip ...................... 241
Checking engine oil level
Via engine oil level indicator ...................................117
Via oil dipstick ...........................................................273
Child restraint ..................................................... 57, 65, 77
Child seat
Infant and child restraint systems ........................... 77
Cleaning and care of the vehicle ................................. 314
Clock, setting ...................................................................110
Coin holder in glove box lid ......................................... 163
COMAND, radio, telephone and two-way radio ........ 186
Combination switch ...................................................... 122
Consumer information .................................................. 334
Control and operation of radio transmitters ............. 186COOLANT (coolant level) -
malfunction and warning messages ..................... 256
Coolant level ................................................................... 274
Adding coolant .......................................................... 275
Checking ..................................................................... 274
COOLANT TEMP. -
malfunction and warning messages ..................... 257
Coolant temperature gauge ............................................90
Coolants .......................................................................... 332
Anticorrosion/antifreeze quantity ........................ 333
Cruise control ................................................................ 222
Cup holder
In center console ....................................................... 165
In glove box lid .......................................................... 163
In rear bench armrest ............................................... 162
DDaytime running lamps ................................................120
Deep water
Driving instructions .................................................221
DISPLAY DEFECTIVE (engine control unit) -
malfunction and warning messages ......................251
DISPLAY DEFECTIVE (several systems) -
malfunction and warning messages ......................251
Display illumination ........................................................89